CN110077010A - The moulding process of hollow based carbon fiber product - Google Patents
The moulding process of hollow based carbon fiber product Download PDFInfo
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- CN110077010A CN110077010A CN201910352817.8A CN201910352817A CN110077010A CN 110077010 A CN110077010 A CN 110077010A CN 201910352817 A CN201910352817 A CN 201910352817A CN 110077010 A CN110077010 A CN 110077010A
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- thick embryo
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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
- B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
- B29C33/3842—Manufacturing moulds, e.g. shaping the mould surface by machining
-
- 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
- B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
- B29C33/40—Plastics, e.g. foam or rubber
-
- 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
-
- 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
- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
- B29C65/50—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Moulding By Coating Moulds (AREA)
Abstract
The present invention provides a kind of moulding process of hollow based carbon fiber product, is related to technical field of carbon fiber preparation.The following steps are included: polystyrene foam raw material is poured into core model mold, it is placed in vacuum hotpressing stove and forms；The core model is put on into airbag；Glass cloth and carbon cloth are coated on core model according to core model shape, obtain product precast body；3K carbon cloth is sticked the type of body die is intracavitary；Precast body is put into body die, air inlet pipe is connected；Molding control；Body die is opened, the thick embryo of product main body is obtained；Remove the yarn clipping of the thick embryo of the main body；Attachment is made using attachment molding die, obtains the thick embryo of attachment；The thick embryo of main body and the thick embryo of attachment is glued；The processing of product coarse embryo, obtains finished product.It solves the problems, such as to lack material or recess in hollow based carbon fiber shaped article.
Description
Technical field
The present invention relates to technical field of carbon fiber preparation, and in particular to a kind of moulding process of hollow based carbon fiber product.
Background technique
For common carbon fibers since it is with high specific surface area, thermal stability is good, anticorrosive, the spies such as excellent conductive and heat-conductive
Property, by extensive concern.Hollow carbon fiber is compared with common carbon fibers, in addition to having the advantages that common carbon fibers, due to hollow knot
The presence of structure increases additional inner surface, make its absorption, mass transfer, in terms of performance be greatly improved, from
And it has a good application prospect in fields such as hydrogen storage industry, environmental protection and the purifications of water body.
Domestic at present generally to use blowing moulding for hollow based carbon fiber product, product shape obtained is more flat
It is suitable, it is mellow and full, it is suitable for forming simple product.
However traditional blowing moulding technique is more radical complicated for moulding and needs hollow products, uses this molding
Technique shortcoming will be extremely obvious, and finished product rate is low under complicated appearance, internal airbag can not the place of arrival often will appear
Lack material or recess.
Summary of the invention
(1) the technical issues of solving
In view of the deficiencies of the prior art, it the present invention provides a kind of moulding process of hollow based carbon fiber product, solves
The problem of material or recess are lacked in hollow based carbon fiber shaped article.
(2) technical solution
In order to achieve the above object, the present invention is achieved by the following technical programs:
A kind of moulding process of hollow based carbon fiber product, which comprises the following steps:
S1, polystyrene foam raw material is poured into core model mold, the core model mold of polystyrene foam raw material will be housed
It is placed in vacuum hotpressing stove and forms, obtain core model；
S2, the core model is put on into airbag；
S3, glass cloth and carbon cloth are coated on core model according to core model shape, air inlet are reserved on the airbag, by institute
It states airbag air inlet to connect with tracheae on molding equipment, obtains product precast body；
S4, intracavitary 3K carbon cloth is sticked in the type of body die；
S5, precast body is put into body die, body die is put into forming furnace table, air inlet pipe is connected, is formed
Control；
Molding control process is respectively five sections following:
First segment controls 140 DEG C~160 DEG C of temperature range of table, and control intraductal atmospheric pressure is 0MPa, and the duration 3~
6min；
When the temperature of the body die reaches 70 DEG C~85 DEG C, air pressure is following control mode:
Second segment, air pressure 2.8MPa~3.0MPa, 8~12min of duration；
Third section, air pressure 4.8MPa~5.2MPa, 8~12min of duration；
4th section, air pressure 7.8MPa~8.1MPa, 8~12min of duration；
5th section, air pressure 11.8MPa~12.2MPa, 8~12min of duration；
S6, the gas in body die is discharged by lasting offer 16MPa~18MPa pressure, then carries out body die
Die sinking, obtains the thick embryo of product main body；
The yarn clipping of S7, the removal thick embryo of main body, remove the carbon cloth of the thick embryo indentation, there of the main body；
S8, attachment is made using attachment molding die, obtains the thick embryo of attachment；
S9, the thick embryo of main body and the thick embryo of attachment is glued, using OPP film that attachment and main body winding is affixed, placement oven, control
110 DEG C~130 DEG C of oven temperature range processed, 60~70min is kept, product coarse embryo is obtained；
S10, the processing of product coarse embryo, obtain finished product.
Further, polyurethane reinforcement can be filled in deep bottom of chamber portion in the thick embryo of the attachment.
It further, is stepped at the thick embryo of the main body and the thick embryo gluing of attachment.
Further, the core model is made of several pellets, is arranged on the core model along the longitudinal direction of product length direction
Airbag.
Further, it smears in the upper mould surface of the body die and lower mould surface convenient for taking out the release of the thick embryo of main body
Agent.
Further, in the S8, attachment is made using attachment molding die, comprising the following steps:
A1, cloth is cut according to product drawing；
A2, mould release is smeared in the upper mold of the attachment molding die and the lower mould surface of the attachment molding die；
A3, cloth is orderly pasted into mold cavity according to the cavity shape of the attachment molding die, by the attachment
Corner pressing amendment is smooth at the type chamber of mold；
A4, the attachment molding die is placed in molding equipment molding, molding time 40min~50min, molding knot
Pressure limit 15MPa~16MPa before beam.
Using the jacking block reserved in the attachment mold by the thick embryo top of attachment after a5, the attachment molding die are cooling
Out, the thick embryo of attachment is obtained；
Parting line on the thick embryo of attachment described in a6, grinding process carries out thick embryo processing, obtains accessory product.
Further, the thick embryo processing the following steps are included:
B1, it is needed according to layout design, using drilling；
B2, all bore edges are subjected to grinding process, equating is whole；
B3, the position for needing to be packed into nut is packed into rivet nut using hand riveter；
B4, the rivet nut is subjected to air-tightness sealing；
B5, thick blank is assembled, is polished flat at assembly.
Further, the grinding process is to use 120# sand paper.
Further, further include that step is repaired in concave surface, using transparent soil by the defective place's filling-in of product, be sent into oven and dry,
Grinding process is carried out again.
It further, further include product appearance processing, comprising the following steps:
C1, by product primer spray, drying；
C2, it will polish at basecoat paint out-of-flatness；
C3, silk-screen printing is carried out to product surface；
C4, to product surface topcoating；
C5, the product table people are processed by shot blasting, obtain finished product.
(3) beneficial effect
The present invention provides a kind of moulding process of hollow based carbon fiber product.Compared with prior art, having following has
Beneficial effect:
1, by covering upper airbag on core model, glass cloth and carbon cloth, and the air inlet of reserved airbag are coated on airbag, is led to
Crossing will expand after air bag inflator, open airbag completely, to make the product inner wall fairing obtained；Body die upper mold and
Mould release is smeared in the lower die of body die, is demoulded convenient for thick embryo；Body die is placed on forming furnace table, passes through five Duan Wen
It spends, the control of airbag air pressure and time, so that formed product effect is good, smoothly；Attachment is made by attachment mold again, by attachment
With main gel and, to avoid main body and attachment when being integrally formed due to complex-shaped, lead to difficult forming, effective solution
The problem of material or recess are lacked in the shaped article of complicated hollow based carbon fiber product.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is a kind of moulding process flow process figure of hollow based carbon fiber product of the embodiment of the present invention.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, to the technology in the embodiment of the present invention
Scheme is clearly and completely described, it is clear that and described embodiments are some of the embodiments of the present invention, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are obtained without creative efforts
The every other embodiment obtained, shall fall within the protection scope of the present invention.
The embodiment of the present application solves middle empty class by providing a kind of moulding process of hollow based carbon fiber product
The problem of material or recess are lacked in carbon fiber forming product, improves the looking products yield rate of complex class.
Technical solution in the embodiment of the present application is in order to solve the above technical problems, general thought is as follows:
Domestic at present generally to use blowing moulding for hollow based carbon fiber product, product shape obtained is more flat
It is suitable, it is mellow and full, it is suitable for forming simple product.But for structure is complicated, internal airbag can not the place of arrival often will appear scarce material, it is recessed
The deficiencies of falling into.Inventor uses production sharing main body and several attachmentes, carries out separating molding, finally carries out gluing again, beat
Mill handles to obtain product, to improve the yield rate of product.
In order to better understand the above technical scheme, in conjunction with appended figures and specific embodiments to upper
Technical solution is stated to be described in detail.
A kind of moulding process of hollow based carbon fiber product, comprising the following steps:
S1, polystyrene foam raw material is poured into core model mold, the core model mold of polystyrene foam raw material will be housed
It is placed in vacuum hotpressing stove and forms, obtain core model；
S2, the core model is put on into airbag；
S3, glass cloth and carbon cloth are coated on core model according to core model shape, air inlet are reserved on the airbag, by institute
It states airbag air inlet to connect with tracheae on molding equipment, obtains product precast body；
S4, intracavitary 3K carbon cloth is sticked in the type of body die；
S5, precast body is put into body die, body die is put into forming furnace table, air inlet pipe is connected, is formed
Control；
Molding control process is respectively five sections following:
First segment controls 140 DEG C~160 DEG C of temperature range of table, and control intraductal atmospheric pressure is 0MPa, and the duration 3~
6min；
When the temperature of the body die reaches 70 DEG C~85 DEG C, air pressure is following control mode:
Second segment, air pressure 2.8MPa~3.0MPa, 8~12min of duration；
Third section, air pressure 4.8MPa~5.2MPa, 8~12min of duration；
4th section, air pressure 7.8MPa~8.1MPa, 8~12min of duration；
5th section, air pressure 11.8MPa~12.2MPa, 8~12min of duration；
S6, the gas in body die is discharged by lasting offer 16MPa~18MPa pressure, then carries out body die
Die sinking, obtains the thick embryo of product main body；
The yarn clipping of S7, the removal thick embryo of main body, remove the carbon cloth of the thick embryo indentation, there of the main body；
S8, attachment is made using attachment molding die, obtains the thick embryo of attachment；
S9, the thick embryo of main body and the thick embryo of attachment is glued, using OPP film that attachment and main body winding is affixed, placement oven, control
110 DEG C~130 DEG C of oven temperature range processed, 60~70min is kept, product coarse embryo is obtained；
S10, the processing of product coarse embryo, obtain finished product.
The embodiment of the present invention coats glass cloth and carbon cloth, and reserved airbag on airbag by covering upper airbag on core model
Air inlet open airbag completely by will expand after air bag inflator, to make the product inner wall fairing obtained；In main body
Mould release is smeared in the upper mold of mold and the lower die of body die, is demoulded convenient for thick embryo；Body die is placed on forming furnace table,
By five Duan Wendu, the control of airbag air pressure and time, so that formed product effect is good, smoothly；It is made again by attachment mold
Attachment, by attachment and main gel and, to lead to difficult forming due to complex-shaped when avoiding main body and attachment integrated molding,
The problem of material or recess are lacked in the shaped article of the complicated hollow based carbon fiber product of effective solution.
Each step is described in detail below with reference to embodiment:
Embodiment 1:
The moulding process of the hollow based carbon fiber product of the embodiment of the present invention, method includes the following steps:
S1, polystyrene foam raw material is poured into core model mold, the core model mold of polystyrene foam raw material will be housed
It is placed in vacuum hotpressing stove and forms, obtain core model；
S2, the core model is put on into airbag；
S3, glass cloth and carbon cloth are coated on core model according to core model shape, air inlet are reserved on the airbag, by institute
It states airbag air inlet to connect with tracheae on molding equipment, obtains product precast body；
S4, intracavitary 3K carbon cloth is sticked in the type of body die；
S5, precast body is put into body die, body die is put into forming furnace table, air inlet pipe is connected, is formed
Control；It is smeared in the upper mould surface of the body die and lower mould surface convenient for taking out the mould release of the thick embryo of main body.
Molding control process is respectively five sections following:
First segment, 140 DEG C of temperature range for controlling table, control intraductal atmospheric pressure are 0MPa, duration 3min；
When the temperature of the body die reaches 70 DEG C, air pressure is following control mode:
Second segment, air pressure 2.8MPa, duration 8min；
Third section, air pressure 4.8MPa, duration 8min；
4th section, air pressure 7.8MPa, duration 8min；
5th section, air pressure 11.8MPa, duration 8min；
Wherein the zero-pressure stage be in order to melt resin in carbon yarn sufficiently (fusing point: 80 °), carbon cloth sufficiently soften second segment,
Third section, the 4th section and the 5th section are a linear uphill process, and carbon cloth will use toughness after softening, as gas enters cloth
Slowly expanding, the temperature of intermediate mold is also slowly to rise, if temperature range control is incorrect, carbon filament can be damaged,
The carbon cloth softening inside for influencing product strength or surface does not soften product in resin backward reaction, does not carry out together, right
The intensity of product be it is influential, the resin in carbon cloth is that the entire product after the arrival of backward reaction temperature is needed to solidify production together
Product intensity is just enough.
Therefore by segmented pressure control, so that body die shaped article good forming effect, high yield rate.
S6, the gas in body die is discharged by lasting offer 16MPa pressure, then carries out body die die sinking, obtained
To the thick embryo of product main body；The gas in product need to be discharged in the case where keeping pressure, if be not discharged completely, be opened product
It can be blown and expand by a large amount of air pressures that inside enters, be easy to cause scrapping for product because there is no pressure；
The yarn clipping of S7, the removal thick embryo of main body, the carbon cloth of the product indentation, there is removed using grinding wheel mould；Wherein yarn clipping is
Squeezed at product parting line by mold and have that certain extra material overflows and extra resin flows out, thus can product at
The extra feature of a circle is left after type at parting line, need to polish off, which makes hand feel smooth, does not scrape hand, has more if it is this part
Feature in containing yarn material be known as yarn clipping, be exactly that extra resin is overflowed and caused such as no yarn material if.
S8, attachment is made using attachment molding die, obtains the thick embryo of attachment；Deep bottom of chamber portion is fillable in the thick embryo of attachment
Polyurethane is reinforced；Attachment wherein is made using attachment molding die, comprising the following steps:
A1, cloth is cut according to product drawing；
A2, mould release is smeared in the upper mold of the attachment molding die and the lower mould surface of the attachment molding die；
A3, cloth is orderly pasted into mold cavity according to the cavity shape of the attachment molding die, by the attachment
Corner pressing amendment is smooth at the type chamber of mold；
A4, the attachment molding die is placed in molding equipment molding, molding time 40min~50min, molding knot
Pressure limit 15MPa before beam.
Using the jacking block reserved in the attachment mold by the thick embryo top of attachment after a5, the attachment molding die are cooling
Out, the thick embryo of attachment is obtained；
Parting line on the thick embryo of attachment described in a6, grinding process carries out thick embryo processing, obtains accessory product.
It is S9, the thick embryo of main body and the thick embryo of attachment is glued, it is step type at the thick embryo of main body and the thick embryo gluing of attachment, uses
Attachment is wound affixed, placement oven by OPP film with main body, controls 110 DEG C of oven temperature range, and holding 60 obtains product coarse embryo；
S10, the processing of product coarse embryo, obtain finished product.
The core model is made of several pellets, and longitudinal airbag along product length direction is arranged on the core model.It is interior
Wall size is smaller need to reserve the space expanded after airbag thickness and air bag inflator, open airbag completely, guarantee to produce with this
Product core model can be divided into several blocks according to product size by the fairing of product inner wall, facilitate operation, and airbag is divided into two (products
Longitudinal two of length direction) it reduces intake process and consumes to obtain the time, so that airbag is most reached state required for product fastly.
Wherein the thick embryo processing the following steps are included:
B1, it is needed according to layout design, using drilling；
B2, all bore edges are subjected to grinding process, equating is whole；
B3, the position for needing to be packed into nut is packed into rivet nut using hand riveter；
B4, the rivet nut is subjected to air-tightness sealing；
B5, thick blank is assembled, is polished flat at assembly.
The thick embryo of main body and the thick embryo grinding process of attachment are to be polished using 120# sand paper.
Further include that step is repaired in concave surface, using transparent soil by the defective place's filling-in of product, is sent into oven and dries, then beaten
Mill processing.
It further include product appearance processing, comprising the following steps:
C1, by product primer spray, drying；
C2, it will polish at basecoat paint out-of-flatness；
C3, silk-screen printing is carried out to product surface；
C4, to product surface topcoating；
C5, the product table people are processed by shot blasting, obtain finished product.
Embodiment 2: the moulding process of the hollow based carbon fiber product of the embodiment of the present invention, method includes the following steps:
S1, polystyrene foam raw material is poured into core model mold, the core model mold of polystyrene foam raw material will be housed
It is placed in vacuum hotpressing stove and forms, obtain core model；
S2, the core model is put on into airbag；
S3, glass cloth and carbon cloth are coated on core model according to core model shape, air inlet are reserved on the airbag, by institute
It states airbag air inlet to connect with tracheae on molding equipment, obtains product precast body；
S4, intracavitary 3K carbon cloth is sticked in the type of body die；
S5, precast body is put into body die, body die is put into forming furnace table, air inlet pipe is connected, is formed
Control；It is smeared in the upper mould surface of the body die and lower mould surface convenient for taking out the mould release of the thick embryo of main body.
Molding control process is respectively five sections following:
First segment, 160 DEG C of temperature range for controlling table, control intraductal atmospheric pressure are 0MPa, duration 6min；
When the temperature of the body die reaches 85 DEG C, air pressure is following control mode:
Second segment, air pressure 3.0MPa, duration 12min；
Third section, air pressure 5.2MPa, duration 12min；
4th section, air pressure 8.1MPa, duration 12min；
5th section, air pressure 12.2MPa, duration 12min；
Wherein the zero-pressure stage be in order to melt resin in carbon yarn sufficiently (fusing point: 80 °), carbon cloth sufficiently soften second segment,
Third section, the 4th section and the 5th section are a linear uphill process, and carbon cloth will use toughness after softening, as gas enters cloth
Slowly expanding, the temperature of intermediate mold is also slowly to rise, if temperature range control is incorrect, carbon filament can be damaged,
The carbon cloth softening inside for influencing product strength or surface does not soften product in resin backward reaction, does not carry out together, right
The intensity of product be it is influential, the resin in carbon cloth is that the entire product after the arrival of backward reaction temperature is needed to solidify production together
Product intensity is just enough.
Therefore by segmented pressure control, so that body die shaped article good forming effect, high yield rate.
S6, the gas in body die is discharged by lasting offer 18MPa pressure, then carries out body die die sinking, obtained
To the thick embryo of product main body；The gas in product need to be discharged in the case where keeping pressure, if be not discharged completely, be opened product
It can be blown and expand by a large amount of air pressures that inside enters, be easy to cause scrapping for product because there is no pressure；
The yarn clipping of S7, the removal thick embryo of main body, the carbon cloth of the product indentation, there is removed using grinding wheel mould；Wherein yarn clipping is
Squeezed at product parting line by mold and have that certain extra material overflows and extra resin flows out, thus can product at
The extra feature of a circle is left after type at parting line, need to polish off, which makes hand feel smooth, does not scrape hand, has more if it is this part
Feature in containing yarn material be known as yarn clipping, be exactly that extra resin is overflowed and caused such as no yarn material if.
S8, attachment is made using attachment molding die, obtains the thick embryo of attachment；Deep bottom of chamber portion is fillable in the thick embryo of attachment
Polyurethane is reinforced；Attachment wherein is made using attachment molding die, comprising the following steps:
A1, cloth is cut according to product drawing；
A2, mould release is smeared in the upper mold of the attachment molding die and the lower mould surface of the attachment molding die；
A3, cloth is orderly pasted into mold cavity according to the cavity shape of the attachment molding die, by the attachment
Corner pressing amendment is smooth at the type chamber of mold；
A4, the attachment molding die is placed in molding equipment molding, molding time 50min, molding terminates preceding pressure
Power range 16MPa.
Using the jacking block reserved in the attachment mold by the thick embryo top of attachment after a5, the attachment molding die are cooling
Out, the thick embryo of attachment is obtained；
Parting line on the thick embryo of attachment described in a6, grinding process carries out thick embryo processing, obtains accessory product.
It is S9, the thick embryo of main body and the thick embryo of attachment is glued, it is step type at the thick embryo of main body and the thick embryo gluing of attachment, uses
Attachment is wound affixed, placement oven by OPP film with main body, controls 130 DEG C of oven temperature range, and holding 70min obtains product coarse
Embryo；
S10, the processing of product coarse embryo, obtain finished product.
The core model is made of several pellets, and longitudinal airbag along product length direction is arranged on the core model.It is interior
Wall size is smaller need to reserve the space expanded after airbag thickness and air bag inflator, open airbag completely, guarantee to produce with this
Product core model can be divided into several blocks according to product size by the fairing of product inner wall, facilitate operation, and airbag is divided into two (products
Longitudinal two of length direction) it reduces intake process and consumes to obtain the time, so that airbag is most reached state required for product fastly.
Wherein the thick embryo processing the following steps are included:
B1, it is needed according to layout design, using drilling；
B2, all bore edges are subjected to grinding process, equating is whole；
B3, the position for needing to be packed into nut is packed into rivet nut using hand riveter；
B4, the rivet nut is subjected to air-tightness sealing；
B5, thick blank is assembled, is polished flat at assembly.
The thick embryo of main body and the thick embryo grinding process of attachment are to be polished using 120# sand paper.
Further include that step is repaired in concave surface, using transparent soil by the defective place's filling-in of product, is sent into oven and dries, then beaten
Mill processing.
It further include product appearance processing, comprising the following steps:
C1, by product primer spray, drying；
C2, it will polish at basecoat paint out-of-flatness；
C3, silk-screen printing is carried out to product surface；
C4, to product surface topcoating；
C5, the product table people are processed by shot blasting, obtain finished product.
Embodiment 3: the moulding process of the hollow based carbon fiber product of the embodiment of the present invention, method includes the following steps:
S1, polystyrene foam raw material is poured into core model mold, the core model mold of polystyrene foam raw material will be housed
It is placed in vacuum hotpressing stove and forms, obtain core model；
S2, the core model is put on into airbag；
S3, glass cloth and carbon cloth are coated on core model according to core model shape, air inlet are reserved on the airbag, by institute
It states airbag air inlet to connect with tracheae on molding equipment, obtains product precast body；
S4, intracavitary 3K carbon cloth is sticked in the type of body die；
S5, precast body is put into body die, body die is put into forming furnace table, air inlet pipe is connected, is formed
Control；It is smeared in the upper mould surface of the body die and lower mould surface convenient for taking out the mould release of the thick embryo of main body.
Molding control process is respectively five sections following:
First segment, 150 DEG C of temperature range for controlling table, control intraductal atmospheric pressure are 0MPa, duration 5min；
When the temperature of the body die reaches 80 DEG C, air pressure is following control mode:
Second segment, air pressure 3.0MPa, duration 10min；
Third section, air pressure 5.0MPa, duration 10min；
4th section, air pressure 8.0MPa, duration 10min；
5th section, air pressure 12.0MPa, duration 12min；
Wherein the zero-pressure stage be in order to melt resin in carbon yarn sufficiently (fusing point: 80 °), carbon cloth sufficiently soften second segment,
Third section, the 4th section and the 5th section are a linear uphill process, and carbon cloth will use toughness after softening, as gas enters cloth
Slowly expanding, the temperature of intermediate mold is also slowly to rise, if temperature range control is incorrect, carbon filament can be damaged,
The carbon cloth softening inside for influencing product strength or surface does not soften product in resin backward reaction, does not carry out together, right
The intensity of product be it is influential, the resin in carbon cloth is that the entire product after the arrival of backward reaction temperature is needed to solidify production together
Product intensity is just enough.
Therefore by segmented pressure control, so that body die shaped article good forming effect, high yield rate.
S6, the gas in body die is discharged by lasting offer 18MPa pressure, then carries out body die die sinking, obtained
To the thick embryo of product main body；The gas in product need to be discharged in the case where keeping pressure, if be not discharged completely, be opened product
It can be blown and expand by a large amount of air pressures that inside enters, be easy to cause scrapping for product because there is no pressure；
The yarn clipping of S7, the removal thick embryo of main body, the carbon cloth of the product indentation, there is removed using grinding wheel mould；Wherein yarn clipping is
Squeezed at product parting line by mold and have that certain extra material overflows and extra resin flows out, thus can product at
The extra feature of a circle is left after type at parting line, need to polish off, which makes hand feel smooth, does not scrape hand, has more if it is this part
Feature in containing yarn material be known as yarn clipping, be exactly that extra resin is overflowed and caused such as no yarn material if.
S8, attachment is made using attachment molding die, obtains the thick embryo of attachment；Deep bottom of chamber portion is fillable in the thick embryo of attachment
Polyurethane is reinforced；Attachment wherein is made using attachment molding die, comprising the following steps:
A1, cloth is cut according to product drawing；
A2, mould release is smeared in the upper mold of the attachment molding die and the lower mould surface of the attachment molding die；
A3, cloth is orderly pasted into mold cavity according to the cavity shape of the attachment molding die, by the attachment
Corner pressing amendment is smooth at the type chamber of mold；
A4, the attachment molding die is placed in molding equipment molding, molding time 45min, molding terminates preceding pressure
Power range 15MPa.
Using the jacking block reserved in the attachment mold by the thick embryo top of attachment after a5, the attachment molding die are cooling
Out, the thick embryo of attachment is obtained；
Parting line on the thick embryo of attachment described in a6, grinding process carries out thick embryo processing, obtains accessory product.
It is S9, the thick embryo of main body and the thick embryo of attachment is glued, it is step type at the thick embryo of main body and the thick embryo gluing of attachment, uses
Attachment is wound affixed, placement oven by OPP film with main body, controls 120 DEG C of oven temperature range, and holding 65min obtains product coarse
Embryo；
S10, the processing of product coarse embryo, obtain finished product.
The core model is made of several pellets, and longitudinal airbag along product length direction is arranged on the core model.It is interior
Wall size is smaller need to reserve the space expanded after airbag thickness and air bag inflator, open airbag completely, guarantee to produce with this
Product core model can be divided into several blocks according to product size by the fairing of product inner wall, facilitate operation, and airbag is divided into two (products
Longitudinal two of length direction) it reduces intake process and consumes to obtain the time, so that airbag is most reached state required for product fastly.
Wherein the thick embryo processing the following steps are included:
B1, it is needed according to layout design, using drilling；
B2, all bore edges are subjected to grinding process, equating is whole；
B3, the position for needing to be packed into nut is packed into rivet nut using hand riveter；
B4, the rivet nut is subjected to air-tightness sealing；
B5, thick blank is assembled, is polished flat at assembly.
The thick embryo of main body and the thick embryo grinding process of attachment are to be polished using 120# sand paper.
Further include that step is repaired in concave surface, using transparent soil by the defective place's filling-in of product, is sent into oven and dries, then beaten
Mill processing.
It further include product appearance processing, comprising the following steps:
C1, by product primer spray, drying；
C2, it will polish at basecoat paint out-of-flatness；
C3, silk-screen printing is carried out to product surface；
C4, to product surface topcoating；
C5, the product table people are processed by shot blasting, obtain finished product.
In conclusion compared with prior art, have it is following the utility model has the advantages that
1, by covering upper airbag on core model, glass cloth and carbon cloth, and the air inlet of reserved airbag are coated on airbag, is led to
Crossing will expand after air bag inflator, open airbag completely, to make the product inner wall fairing obtained；Body die upper mold and
Mould release is smeared in the lower die of body die, is demoulded convenient for thick embryo；Body die is placed on forming furnace table, passes through five Duan Wen
It spends, the control of airbag air pressure and time, so that formed product effect is good, smoothly；Attachment is made by attachment mold again, by attachment
With main gel and, to avoid main body and attachment when being integrally formed due to complex-shaped, lead to difficult forming, effective solution
The problem of material or recess are lacked in the shaped article of complicated hollow based carbon fiber product.
2, reinforced in attachment bottom using polyurethane by splitting product, product is used compared with existing product under identical wall thickness
Intensity is obviously improved.
3, it is relatively integrally formed scheme, this scheme later product maintenance cost is reduced, and product can be real after passing through fractionation
Now only replace at rapid wear.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including the element.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to the foregoing embodiments
Invention is explained in detail, those skilled in the art should understand that: it still can be to aforementioned each implementation
Technical solution documented by example is modified or equivalent replacement of some of the technical features；And these modification or
Replacement, the spirit and scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (10)
1. a kind of moulding process of hollow based carbon fiber product, which comprises the following steps:
S1, polystyrene foam raw material is poured into core model mold, the core model mold equipped with polystyrene foam raw material is placed
It is formed in vacuum hotpressing stove, obtains core model；
S2, the core model is put on into airbag；
S3, glass cloth and carbon cloth are coated on core model according to core model shape, air inlet are reserved on the airbag, by the gas
Bag air inlet is connect with tracheae on molding equipment, obtains product precast body；
S4, intracavitary 3K carbon cloth is sticked in the type of body die；
S5, precast body is put into body die, body die is put into forming furnace table, connects air inlet pipe, carries out molding control；
Molding control process is respectively five sections following:
First segment, 140 DEG C~160 DEG C of temperature range for controlling table, control intraductal atmospheric pressure are 0MPa, 3~6min of duration；
When the temperature of the body die reaches 70 DEG C~85 DEG C, air pressure is following control mode:
Second segment, air pressure 2.8MPa~3.0MPa, 8~12min of duration；
Third section, air pressure 4.8MPa~5.2MPa, 8~12min of duration；
4th section, air pressure 7.8MPa~8.1MPa, 8~12min of duration；
5th section, air pressure 11.8MPa~12.2MPa, 8~12min of duration；
S6, the gas in body die is discharged by lasting offer 16MPa~18MPa pressure, then carries out body die die sinking,
Obtain the thick embryo of product main body；
The yarn clipping of S7, the removal thick embryo of main body, remove the carbon cloth of the thick embryo indentation, there of the main body；
S8, attachment is made using attachment molding die, obtains the thick embryo of attachment；
S9, the thick embryo of main body and the thick embryo of attachment is glued, using OPP film that attachment and main body winding is affixed, placement oven, control are roasting
110 DEG C~130 DEG C of case temperature range, 60~70min is kept, product coarse embryo is obtained；
S10, the processing of product coarse embryo, obtain finished product.
2. the moulding process of hollow based carbon fiber product as described in claim 1, which is characterized in that deep in the thick embryo of attachment
Bottom of chamber portion can be filled polyurethane and reinforce.
3. the moulding process of hollow based carbon fiber product as described in claim 1, which is characterized in that the thick embryo of main body with it is attached
It is step type at the thick embryo gluing of part.
4. the moulding process of hollow based carbon fiber product as described in claim 1, which is characterized in that the core model is by several
Pellet forms, and longitudinal airbag along product length direction is arranged on the core model.
5. the moulding process of hollow based carbon fiber product as described in claim 1, which is characterized in that the body die it is upper
It is smeared in mould surface and lower mould surface convenient for taking out the mould release of the thick embryo of main body.
6. the moulding process of hollow based carbon fiber product as described in claim 1, which is characterized in that in the S8, use is attached
Attachment is made in part molding die, comprising the following steps:
A1, cloth is cut according to product drawing；
A2, mould release is smeared in the upper mold of the attachment molding die and the lower mould surface of the attachment molding die；
A3, cloth is orderly pasted into mold cavity according to the cavity shape of the attachment molding die, by the attachment mold
Type chamber at corner pressing amendment it is smooth；
A4, the attachment molding die is placed in molding equipment molding, molding time 40min~50min, before molding terminates
Pressure limit 15MPa~16MPa.
The thick embryo of attachment is ejected using the jacking block reserved in the attachment mold after a5, the attachment molding die are cooling, is obtained
To the thick embryo of attachment；
Parting line on the thick embryo of attachment described in a6, grinding process carries out thick embryo processing, obtains accessory product.
7. the moulding process of hollow based carbon fiber product as described in claim 1 or 6, which is characterized in that the thick embryo processing
The following steps are included:
B1, it is needed according to layout design, using drilling；
B2, all bore edges are subjected to grinding process, equating is whole；
B3, the position for needing to be packed into nut is packed into rivet nut using hand riveter；
B4, the rivet nut is subjected to air-tightness sealing；
B5, thick blank is assembled, is polished flat at assembly.
8. the moulding process of hollow based carbon fiber product as claimed in claims 6 or 7, which is characterized in that the grinding process
To use 120# sand paper.
9. the moulding process of hollow based carbon fiber product as described in claim 1, which is characterized in that further include that step is repaired in concave surface
Suddenly, the defective place's filling-in of product is sent into oven and dried using transparent soil, then carry out grinding process.
10. the moulding process of hollow based carbon fiber product as described in claim 1, which is characterized in that further include product appearance
Processing, comprising the following steps:
C1, by product primer spray, drying；
C2, it will polish at basecoat paint out-of-flatness；
C3, silk-screen printing is carried out to product surface；
C4, to product surface topcoating；
C5, the product table people are processed by shot blasting, obtain finished product.
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