CN112356457A - Mould pressing and bag pressing integrated forming process for composite material chair back - Google Patents
Mould pressing and bag pressing integrated forming process for composite material chair back Download PDFInfo
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- CN112356457A CN112356457A CN202011062686.9A CN202011062686A CN112356457A CN 112356457 A CN112356457 A CN 112356457A CN 202011062686 A CN202011062686 A CN 202011062686A CN 112356457 A CN112356457 A CN 112356457A
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- 238000000034 method Methods 0.000 title claims abstract description 63
- 239000002131 composite material Substances 0.000 title claims abstract description 51
- 238000003825 pressing Methods 0.000 title claims abstract description 45
- 229920001296 polysiloxane Polymers 0.000 claims abstract description 41
- 239000000463 material Substances 0.000 claims abstract description 26
- 238000004519 manufacturing process Methods 0.000 claims abstract description 15
- 238000005520 cutting process Methods 0.000 claims abstract description 4
- 238000003892 spreading Methods 0.000 claims description 24
- 238000000465 moulding Methods 0.000 claims description 22
- 238000010438 heat treatment Methods 0.000 claims description 13
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 4
- 239000004917 carbon fiber Substances 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 4
- 229920006231 aramid fiber Polymers 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 238000005452 bending Methods 0.000 claims description 2
- 238000010276 construction Methods 0.000 description 4
- 239000003292 glue Substances 0.000 description 2
- -1 automobiles Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007723 die pressing method Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000004816 latex Substances 0.000 description 1
- 229920000126 latex Polymers 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
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Classifications
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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
-
- 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
- B29C70/342—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 isostatic pressure
-
- 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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
The invention relates to a mould pressing and bag pressing integrated forming process of a composite material chair back, which comprises the following steps: the method comprises the following steps: splitting the integral complex structure of the composite chair back into a frame and a panel which are respectively manufactured; step two: the frame is finished by paving and pasting prepreg sheets, and the reserved prepreg sheets are turned over; step three: an air pipe or a silicone tube is arranged in the laid frame, and the air pipe or the silicone tube is wrapped by using the reserved sheet flanging to obtain a frame part; step four: the manufacturing process of the panel comprises the following steps: cutting a prepreg sheet according to the size of a drawing; step five: lapping and paving the panel in the fourth step and the flanging part of the material sheet of the frame which is provided with the built-in air pipe or silicone tube and is prepared in the third step to obtain a complete product preform; step six: and (5) applying a mould pressing and bag pressing process to the preformed product in the step six to obtain a finished product. The invention reduces the production cost and the complexity of the material process; the overall structural strength of the product can meet the requirements of high impact, high temperature and the like.
Description
Technical Field
The invention relates to a mould pressing and bag pressing integrated forming process, in particular to a mould pressing and bag pressing integrated forming process for a composite material chair back, which is simple in manufacturing process, stable in performance and high in strength.
Background
The composite material is widely applied to various fields of production and life at present, has higher strength and rigidity, better impact resistance and good structural designability, and is beneficial to forming of a curved surface structure. The composite material not only keeps the advantages of the material performance of each component, but also can obtain the comprehensive performance which cannot be achieved by a single component material and is easy to form through the complementation and the association of each component, and the composite material can be integrally formed into various complex shapes. Therefore, the composite material has wide application and can be applied to the fields of aerospace, medicine, automobiles, textile, mechanical manufacturing and the like. At present, the complex structure composite material is generally formed by splitting an integral structure into parts and then bonding the parts into an integral product. The bonding scheme of the composite material with the complex structure has the following problems:
(1) according to the bonding scheme of the composite material product with the complex structure, the strength of the bonded product depends on the strength of bonding glue too much and is far lower than that of a product obtained after prepreg is integrally molded.
(2) The bonding scheme of the product of the composite material with the complex structure has complex working procedures, consumes more time for the products produced in batch, and reduces the production efficiency.
(3) According to the bonding scheme of the product of the composite material with the complex structure, the bonding operation is difficult to meet the flatness requirement of the product with higher flatness requirement.
(4) The bonding scheme of the product made of the composite material with the complex structure has the advantage that the bonding is difficult to meet the matching requirement of the product with higher matching requirement of the bonding assembly.
(5) According to the bonding scheme of the product of the composite material with the complex structure, the bonding part is easy to leak gas for the product with higher air tightness requirement, and the air tightness requirement is difficult to meet.
(6) According to the bonding scheme of the product of the composite material with the complex structure, the bonded part of the product is not resistant to high temperature and other damp and hot environments, and the bonding glue strength is reduced when the product is used for a long time, so that the risk of falling is avoided.
Disclosure of Invention
In view of the above problems, the main object of the present invention is to provide a molding and bag-adding integrated molding process for a composite material chair back with simple manufacturing process, stable performance and high strength.
The invention solves the technical problems through the following technical scheme: a mould pressing and bag pressing integrated forming process for a composite material chair back comprises the following steps:
the method comprises the following steps: splitting the integral complex structure of the composite chair back into a frame and a panel which are respectively manufactured;
step two: the manufacturing process of the frame in the first step is as follows: the frame is finished by paving and pasting prepreg sheets, and the reserved prepreg sheets are turned over;
step three: arranging an air pipe or a silicone tube in the laid frame in the step two, and wrapping the air pipe or the silicone tube by using a reserved sheet flanging to obtain a frame part;
step four: the manufacturing process of the panel comprises the following steps: cutting a prepreg sheet according to the size of a drawing;
step five: lapping and paving the panel in the fourth step and the flanging part of the material sheet of the frame which is provided with the built-in air pipe or silicone tube and is prepared in the third step to obtain a complete product preform;
step six: protecting an end air pipe or a silicone tube by using an inverted U-shaped material sheet, and locking an air nozzle; obtaining a preform;
step seven: applying a mould pressing and bag pressing process to the preformed product in the step six to obtain a finished product;
step eight: and (5) disassembling the inverted U-shaped material sheet, the air pipe or the silicone tube.
In an embodiment of the present invention, in the step one, the complex structure in the composite material chair back comprises a curved surface structure part, a bent structure part, a groove part and a boss part.
In a specific implementation example of the present invention, in the step one, the overall complex structure of the composite chair back is split into two parts, namely a frame and a panel, and the splitting of the complex structure of the product specifically includes the following steps:
according to the modeling of the complex structure part and the product, the spreading mode of the frame and the panel combination, the mold design rationality, the product molding temperature uniformity, the easy demoulding and easy spreading factors are considered to design the mold and the material sheet spreading shape of the complex structure part, the proper prepreg sheet is selected according to the requirements of the product strength, the performance and the appearance, and the technological process of the complex structure part is designed according to the requirements of the thickness, the gram weight, the material performance, the surface density parameter and the product weight of the sheet.
In a specific embodiment of the present invention, the step two and the step three of separately paving and pasting the frame, reserving a sheet flanging, placing an air pipe or a silicone tube in the paved frame, and wrapping the air pipe or the silicone tube with the reserved sheet flanging specifically includes the following steps:
according to the product thickness requirement and the weight analysis result, designing matched prepreg sheet spreading shapes, spreading the prepreg sheets according to a spreading sequence of process design, wherein all the prepreg sheet sizes do not need to be cut manually, after all prepreg turned-over edges are reserved, embedding an air pipe or a soft silicone tube, and then completely wrapping the air pipe or the silicone tube by using the reserved prepreg sheets to obtain a frame part.
In a specific embodiment of the present invention, the panel split in the fourth step is overlapped and laid on the frame part wrapped with the air pipe or the silicone tube, and the step of obtaining the complete product preform specifically includes the following steps:
according to the product modeling and the mold design structure, the mold insert of the frame part wrapped with the air pipe or the silicone tube is positioned, and then the prepreg of the panel part is overlapped with the position of the frame to obtain a complete product preform.
In a specific embodiment of the present invention, the step six of integrally forming by using a die pressing and bag pressing process to obtain the finished product specifically includes the following steps:
according to the design requirements of a main body mold, closing an upper mold and a lower mold, placing the molds on a vulcanizing machine for molding under the condition of avoiding mold clamping, wherein the temperature of a heating process is 80-200 ℃; the heating time is 30-120 min;
the pressure applying time of the pressure applying process is 30-120 min;
according to different molding processes and product thicknesses, different pressures are needed, and the pressure range of the pressurizing process is one of the ranges of 0.1-1 MPa, 1-2 MPa or more than 2 MPa; and (3) carrying out heating and pressurizing treatment, keeping for 30-120 min, cooling and taking out to obtain an integrally formed product.
In a specific embodiment of the present invention, the prepreg sheet is one of a carbon fiber or aramid fiber reinforced resin prepreg sheet.
The positive progress effects of the invention are as follows: the mould pressing and bag pressing integrated forming process of the composite material chair back provided by the invention can be used for finishing the manufacture of a product under the condition that other auxiliary materials except the composite material are not used, so that the production cost and the material process complexity are reduced; the strength of the whole structure of the product can meet the strength requirements under the conditions of high impact, high temperature and the like, and the product manufactured by the process has stable performance and high strength.
Drawings
Fig. 1-1 is one of the flow charts of the molding and bagging integrated forming process of the composite material chair back of the invention.
Fig. 1-2 are two flow charts of the molding and bagging integrated forming process of the composite material chair back of the invention.
Fig. 1-3 are third flow charts of the molding and bagging integrated forming process of the composite material chair back of the invention.
Fig. 1-4 are four flow charts of the molding and bagging integrated forming process of the composite material chair back of the invention.
Fig. 2-1 is a schematic front view of the overall construction of the composite back of the present invention.
Fig. 2-2 are side views of the overall construction of the composite chair back of the present invention.
The following are the names corresponding to the reference numbers in the invention:
the frame 1, the panel 2, the air pipe or the silicone tube 3, the curved surface structure part 101, the bent structure part 102, the groove part 103, the boss part 104 and the material sheet flanging 105.
Detailed Description
The following provides a detailed description of the preferred embodiments of the present invention with reference to the accompanying drawings.
Fig. 1-1 is one of the flow charts of the molding and bagging integrated forming process of the composite material chair back of the invention. Fig. 1-2 are two flow charts of the molding and bagging integrated forming process of the composite material chair back of the invention. Fig. 1-3 are third flow charts of the molding and bagging integrated forming process of the composite material chair back of the invention. Fig. 1-4 are four flow charts of the molding and bagging integrated forming process of the composite material chair back of the invention. Fig. 2-1 is a schematic front view of the overall construction of the composite back of the present invention. Fig. 2-2 are side views of the overall construction of the composite chair back of the present invention. As shown in the above figures: the invention provides a mould pressing and bag pressing integrated forming process for a composite material chair back, which comprises the following steps:
the method comprises the following steps: the integral complex structure of the composite material chair back is split into a frame 1 and a panel 2 which are respectively manufactured; in the step one, the complex structure in the composite material chair back comprises a curved surface structure part 101, a bending structure part 102, a groove part 103 and a boss part 104.
In the first step, the integral complex structure of the composite chair back is split into a frame and a panel, and the splitting of the complex structure of the product specifically comprises the following steps:
according to the modeling of the complex structure part and the product, the spreading mode of the frame 1 and the panel 2, the mold design rationality, the product molding temperature uniformity, the easy demoulding and easy spreading factors are considered to design the mold and the material sheet spreading shape of the complex structure part, the proper prepreg sheet is selected according to the requirements of the product strength, the performance and the appearance, and the technological process of the complex structure part is designed according to the requirements of the thickness, the gram weight, the material performance, the surface density parameter and the product weight of the sheet.
Step two: the manufacturing process of the frame in the first step is as follows: the frame is finished by paving and pasting prepreg sheets, and the reserved prepreg sheets are turned over 105;
step three: arranging an air pipe or a silicone tube 3 in the laid frame in the step two, and wrapping the air pipe or the silicone tube by using a reserved sheet flanging to obtain a frame part;
step four: the manufacturing process of the panel comprises the following steps: cutting a prepreg sheet according to the size of a drawing;
step five: overlapping and paving the panel in the fourth step and the material sheet flanging 105 part of the frame which is manufactured in the third step and is internally provided with the air pipe or the silicone tube to obtain a complete product preform;
step six: protecting an end air pipe or a silicone tube by using an inverted U-shaped material sheet, and locking an air nozzle; obtaining a preform;
step seven: applying a mould pressing and bag pressing process to the preformed product in the step six to obtain a finished product;
step eight: and (5) disassembling the inverted U-shaped material sheet, the air pipe or the silicone tube.
The frame separated in the second step and the third step is independently paved and pasted, the material piece flanging is reserved, the paved frame is internally provided with the air pipe or the silicone tube, and the reserved material piece flanging is used for wrapping the air pipe or the silicone tube, so that the method specifically comprises the following steps: according to the product thickness requirement and the weight analysis result, designing matched prepreg sheet spreading shapes, spreading the prepreg sheets according to a spreading sequence of process design, wherein all the prepreg sheet sizes do not need to be cut manually, after all prepreg turned-over edges are reserved, embedding an air pipe or a soft silicone tube, and then completely wrapping the air pipe or the silicone tube by using the reserved prepreg sheets to obtain a frame part.
The panel 2 split in the fourth step is lapped and paved with the frame part wrapped with the air pipe or the silicone tube, and the obtained complete product preform specifically comprises the following steps: according to the product modeling and the mold design structure, the mold insert of the frame part wrapped with the air pipe or the silicone tube is positioned, and then the prepreg of the panel part is overlapped with the position of the frame to obtain a complete product preform.
The step six of integrally forming by applying a mould pressing and bag pressing process to obtain the finished product specifically comprises the following steps:
according to the design requirements of a main body mold, closing an upper mold and a lower mold, placing the molds on a vulcanizing machine for molding under the condition of avoiding mold clamping, wherein the temperature of a heating process is 80-200 ℃; the heating time is 30-120 min.
According to different molding processes and product thicknesses, different pressures are needed, and the pressure range of the pressurizing process is one of the ranges of 0.1-1 MPa, 1-2 MPa or more than 2 MPa; and (3) carrying out heating and pressurizing treatment, keeping for 30-120 min, cooling and taking out to obtain an integrally formed product.
The prepreg sheet adopted in the invention is one of carbon fiber or aramid fiber reinforced resin prepreg sheets.
The following is a specific example of implementation: the method comprises the steps of taking a continuous carbon fiber reinforced epoxy resin prepreg sheet as a raw material, performing partial pre-forming on a product frame, performing pre-forming on a panel position after wrapping an air pipe or a latex pipe to obtain a complete pre-forming body of the product, and finally performing pressure heating forming to obtain a finished product. The method comprises the following specific steps:
the method comprises the following steps: according to the modeling of the complex structure part and the product, the spreading mode of the frame and the panel combination, the mold design rationality, the product molding temperature uniformity, the easy demoulding and easy spreading factors are considered to design the mold and the material sheet spreading shape of the complex structure part, according to the requirements of the product such as strength, performance and appearance, a proper prepreg sheet is selected, and the technological process of the complex structure part is designed according to the requirements of the thickness, the gram weight, the material performance, the surface density parameter and the product weight of the sheet.
Step two, step three: according to the product thickness requirement and the weight analysis result, designing matched prepreg sheet spreading shapes, spreading the prepreg sheets according to a spreading sequence of process design, wherein all the prepreg sheet sizes do not need to be cut manually, after all prepreg turned-over edges are reserved, embedding an air pipe or a soft silicone tube, and then completely wrapping the air pipe or the silicone tube by using the reserved prepreg sheets to obtain a frame part.
Step four: according to the product modeling and the mold design structure, the mold insert of the frame part wrapped with the air pipe or the silicone tube is positioned, and then the prepreg of the panel part is overlapped with the position of the frame to obtain a complete product preform.
Step five: according to the analysis result of product thickness requirement and weight, after carrying out the local reinforcement with frame end position, use the type of falling U flitch to wrap up tuber pipe or silicone tube and protect, guarantee that the tuber pipe parcel is complete, reduce gas leakage or explode the bag risk, then use the spanner with the air cock and lock it.
Step six: according to the design requirements of a main body mold, closing an upper mold and a lower mold, placing the molds on a vulcanizing machine for molding under the condition of avoiding mold clamping, wherein the temperature of a heating process is 80-200 ℃; the heating time is 30-120 min;
the pressure applying time of the pressure applying process is 30-120 min;
according to different molding processes and product thicknesses, different pressures are needed, and the pressure range of the pressurizing process is at least one of the ranges of 0.1-1 MPa, 1-2 MPa and more than 2 MPa. And (3) carrying out heating and pressurizing treatment, keeping for a period of time, cooling and taking out to obtain an integrally formed product.
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 (7)
1. A mould pressing and bag pressing integrated forming process for a composite material chair back is characterized in that: the mould pressing and bag pressing integrated forming process of the composite material chair back comprises the following steps:
the method comprises the following steps: splitting the integral complex structure of the composite chair back into a frame and a panel which are respectively manufactured;
step two: the manufacturing process of the frame in the first step is as follows: the frame is finished by paving and pasting prepreg sheets, and the reserved prepreg sheets are turned over;
step three: arranging an air pipe or a silicone tube in the laid frame in the step two, and wrapping the air pipe or the silicone tube by using a reserved sheet flanging to obtain a frame part;
step four: the manufacturing process of the panel comprises the following steps: cutting a prepreg sheet according to the size of a drawing;
step five: lapping and paving the panel in the fourth step and the flanging part of the material sheet of the frame which is provided with the built-in air pipe or silicone tube and is prepared in the third step to obtain a complete product preform;
step six: protecting an end air pipe or a silicone tube by using an inverted U-shaped material sheet, and locking an air nozzle; obtaining a preform;
step seven: applying a mould pressing and bag pressing process to the preformed product in the step six to obtain a finished product;
step eight: and (5) disassembling the inverted U-shaped material sheet, the air pipe or the silicone tube.
2. The mold pressing and bag pressing integrated forming process of the composite chair back as claimed in claim 1, wherein: the complex structure in the composite material chair back in the first step comprises a curved surface structure part, a bending structure part, a groove part and a boss part.
3. The mold pressing and bag pressing integrated forming process of the composite chair back as claimed in claim 1, wherein: in the first step, the overall complex structure of the composite chair back is split into a frame and a panel, and the splitting of the complex structure of the product specifically comprises the following steps:
according to the modeling of the complex structure part and the product, the spreading mode of the frame and the panel combination, the mold design rationality, the product molding temperature uniformity, the easy demoulding and easy spreading factors are considered to design the mold and the material sheet spreading shape of the complex structure part, the proper prepreg sheet is selected according to the requirements of the product strength, the performance and the appearance, and the technological process of the complex structure part is designed according to the requirements of the thickness, the gram weight, the material performance, the surface density parameter and the product weight of the sheet.
4. The mold pressing and bag pressing integrated forming process of the composite chair back as claimed in claim 1, wherein: the step two and the step three are completed by independently paving the split frame, reserving the sheet flanging, arranging an air pipe or a silicone tube in the paved frame, and wrapping the air pipe or the silicone tube by using the reserved sheet flanging, wherein the step three specifically comprises the following steps:
according to the product thickness requirement and the weight analysis result, designing matched prepreg sheet spreading shapes, spreading the prepreg sheets according to a spreading sequence of process design, wherein all the prepreg sheet sizes do not need to be cut manually, after all prepreg turned-over edges are reserved, embedding an air pipe or a soft silicone tube, and then completely wrapping the air pipe or the silicone tube by using the reserved prepreg sheets to obtain a frame part.
5. The mold pressing and bag pressing integrated forming process of the composite chair back as claimed in claim 1, wherein: and the panel split in the fourth step is lapped and paved with the frame part wrapped with the air pipe or the silicone tube, and the obtained complete product preform specifically comprises the following steps:
according to the product modeling and the mold design structure, the mold insert of the frame part wrapped with the air pipe or the silicone tube is positioned, and then the prepreg of the panel part is overlapped with the position of the frame to obtain a complete product preform.
6. The mold pressing and bag pressing integrated forming process of the composite chair back as claimed in claim 1, wherein: the step six of integrally forming by applying a mould pressing and bag pressing process to obtain the finished product specifically comprises the following steps:
according to the design requirements of a main body mold, closing an upper mold and a lower mold, placing the molds on a vulcanizing machine for molding under the condition of avoiding mold clamping, wherein the temperature of a heating process is 80-200 ℃; the heating time is 30-120 min;
the pressure applying time of the pressure applying process is 30-120 min;
according to different molding processes and product thicknesses, different pressures are needed, and the pressure range of the pressurizing process is one of the ranges of 0.1-1 MPa, 1-2 MPa or more than 2 MPa; and (3) carrying out heating and pressurizing treatment, keeping for 30-120 min, cooling and taking out to obtain an integrally formed product.
7. The mold pressing and bag pressing integrated forming process of the composite chair back as claimed in claim 1, wherein: the prepreg sheet is one of carbon fiber or aramid fiber reinforced resin prepreg sheets.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114161737A (en) * | 2021-12-03 | 2022-03-11 | 广东汇天航空航天科技有限公司 | Forming method of composite part, composite part and aircraft |
| CN114734568A (en) * | 2022-03-04 | 2022-07-12 | 东莞泰合复合材料有限公司 | Forming method of carbon fiber composite material product |
| CN115674718A (en) * | 2022-10-19 | 2023-02-03 | 连云港神鹰碳纤维自行车有限公司 | Manufacturing method of carbon fiber chair |
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| CN115674718A (en) * | 2022-10-19 | 2023-02-03 | 连云港神鹰碳纤维自行车有限公司 | Manufacturing method of carbon fiber chair |
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