CN108973164B - Compression molding die with overflow hole, fitting and preparation scheme thereof - Google Patents
Compression molding die with overflow hole, fitting and preparation scheme thereof Download PDFInfo
- Publication number
- CN108973164B CN108973164B CN201810956426.2A CN201810956426A CN108973164B CN 108973164 B CN108973164 B CN 108973164B CN 201810956426 A CN201810956426 A CN 201810956426A CN 108973164 B CN108973164 B CN 108973164B
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- CN
- China
- Prior art keywords
- die
- fiber
- fixed
- pressing
- overflow holes
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000002360 preparation method Methods 0.000 title abstract description 5
- 238000000748 compression moulding Methods 0.000 title description 2
- 239000000835 fiber Substances 0.000 claims abstract description 52
- 239000004744 fabric Substances 0.000 claims abstract description 25
- 239000002184 metal Substances 0.000 claims abstract description 22
- 239000007788 liquid Substances 0.000 claims abstract description 18
- 238000007723 die pressing method Methods 0.000 claims abstract description 14
- 238000003825 pressing Methods 0.000 claims abstract description 13
- 239000004745 nonwoven fabric Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 9
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 7
- 239000004917 carbon fiber Substances 0.000 claims description 7
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 7
- 239000002759 woven fabric Substances 0.000 claims description 7
- 238000005553 drilling Methods 0.000 claims description 3
- 230000001788 irregular Effects 0.000 claims description 2
- 239000011347 resin Substances 0.000 claims description 2
- 229920005989 resin Polymers 0.000 claims description 2
- 238000000465 moulding Methods 0.000 claims 2
- 239000002131 composite material Substances 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000000758 substrate Substances 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 13
- 238000005452 bending Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000000919 ceramic Substances 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 229920002748 Basalt fiber Polymers 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003733 fiber-reinforced composite Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
Classifications
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Laminated Bodies (AREA)
Abstract
The invention discloses a die pressing die with overflow holes, a fitting and a preparation scheme thereof, comprising an upper die, a lower die and a fitting part of the die pressing die, wherein a plurality of overflow holes which are uniformly distributed are arranged from the inner wall of the upper die to the outer side of the die, then a fixing fitting is paved on the inner wall of the die, the fitting comprises a metal wire layer and a intertexture layer, the die is used for pressing a fiber cloth with a fiber density ratio improved in the manufacturing process of a fiber composite material, and the fiber cloth coated or presoaked with a liquid substrate is laminated, so that redundant liquid is reduced in the laminated by the die pressing.
Description
Technical Field
The invention relates to a die pressing device, in particular to a die pressing die.
Background
In order to increase the fiber density ratio, the conventional fiber composite material is manufactured by coating or presoaking a liquid base material on fiber cloth and then laminating the liquid base material, and part of the liquid is extruded out, wherein the liquid flows out along the outer peripheral edges of an upper die and a lower die core part in the die pressing process, so that the fiber is easy to move, such as brittle fibers as carbon fiber, glass fiber, ceramic fiber, basalt fiber and the like, and the fiber is bent after moving, so that the tensile strength is reduced due to bending, and the laminated body surface presents partial bulges, uneven thickness and structural change, thereby influencing the surface smoothness, especially the fiber non-woven fabric.
Disclosure of Invention
In order to solve the technical problem of fiber movement in the mould pressing process, the tensile strength of the fiber is reduced after bending, and the surface of the laminated object is uneven.
The technical scheme adopted for solving the technical problems is as follows: the die-pressing die with overflow holes, the accessory and the preparation scheme thereof comprise an upper die, a lower die and the accessory thereof, and are characterized in that a plurality of overflow holes are arranged on the object made by the upper die and the lower die of the die and face the outside of the die shell; the accessory comprises any one or more of a metal wire layer, a metal wire mixed fabric, a fiber non-woven fabric and a fiber felt paved on the inner walls of the upper die and the lower die; the fiber cloth layer is used for mould pressing and smearing or presoaking liquid, and in the pressing process, the liquid uniformly overflows from a pressing surface to a mould.
The upper die and the lower die of the die are provided with a plurality of uniform overflow holes facing the die shell, wherein the uniform overflow holes comprise part of overflow holes at irregular deformation positions, or the non-uniform overflow holes can be arranged, and the holes are formed by mechanical drilling or laser perforation.
The upper die and the lower die of the die comprise flat plates, ellipses and shell types.
And under the condition that the upper die and the lower die of the die or the upper die or the lower die is not provided with overflow holes, a metal wire layer is paved on the inner walls of the upper die and the lower die, and any one or more of metal wire mixed fabrics, fiber non-woven fabrics and fiber felts are paved.
The sequence of laying the metal wire layer, the metal wire mixed fabric, the fiber non-woven fabric and the fiber felt on the inner walls of the upper die and the lower die and the number of layers of each type can be freely set, and the method also comprises the steps that part or all of the layers are fixed in the die, or part or all of the layers are laid and covered on the pressed object surface.
The beneficial effects obtained by the invention are as follows: in the mould pressing process, the fiber is reduced to move or hardly move, the problem of tensile strength reduction caused by fiber movement and bending is reduced, for example, the brittle fiber reinforced composite material such as carbon fiber, glass fiber, ceramic fiber and the like can improve the tensile strength of the composite material after subsequent heating and shaping, the fiber content ratio is improved, the thickness is uniform, the surface is flat, the structure is not changed, the pressure born by the fiber during mould pressing is weakened, the impact damage of the pressure to the fiber is reduced, and the carbon fiber filament non-woven fabric is changed from being incapable of mould pressing into being capable of mould pressing. For example, according to different quality requirements of the pressed object, the upper die and the lower die of the compression die can be adopted, and only the accessory part is paved under the condition that no overflow hole is arranged on the upper die and the lower die, so that the better effect of the laminated object is achieved, and the manufacturing die cost and the cost control requirement are saved. And the quality requirements of the pressed articles are reasonably selected and matched, such as the fixing, the sequence and the selection of the types of the parts, so that the cost can be saved and the production efficiency can be improved.
The overflow holes of the mould pressing mould can enable the liquid of the laminated object to uniformly flow out, the metal wire layers and the metal wire mixed fabrics are not easy to deform due to strong bending resistance of metal, the liquid fluidity is good, the flatness is generally higher than that of the overflow holes of the mould, the fiber mixed fabrics are fine and easy to deform, the flatness is better than that of metal materials, the non-woven fabrics and the fiber felt are finer, and the flatness is higher than that of the fiber mixed fabrics, so that the surface of the laminated object is flat.
Drawings
The invention is further described below with reference to the drawings and examples.
FIG. 1 is a schematic diagram of an upper die and a lower die of the present invention.
Fig. 2 is a schematic illustration of a cross-woven fabric.
Fig. 3 is a schematic cross-sectional view of a fabric.
Fig. 4 is a schematic illustration of a single layer of wire.
Fig. 5 is a schematic view of a wire in both the warp and weft directions.
In the figure, 1, an upper die, 2, a lower die, 3, overflow holes, 4, grooves, 5, flow directions and 6, gaps.
The specific embodiment is as follows:
the invention is described in further detail below with reference to the embodiments of the drawings.
[ example 1 ]
The die pressing die with overflow holes, the accessory and the preparation scheme thereof comprise an upper die 1 and a lower die 2 of the die pressing die, a plurality of tiny overflow holes 3 which are uniformly distributed are arranged from the inner lamination object surface of the die to the outside of the die by adopting a mechanical drilling or laser perforation mode, and the die pressing die is suitable for flat-plate type, elliptic and shell-type dies. For example, some irregularities of the shell mold, the overflow holes 3 provided may be non-uniform. The metal wire mixed fabric is firstly paved and fixed along the inner wall of the die, the metal wire mixed fabric can be fixed on the periphery of the edge of the upper die 1 and the periphery of the lower die 2 and a small amount of small dot surfaces of the inner wall, then the fixed fiber mixed fabric is paved and fixed on the periphery of the edge of the die and the small amount of small dot surfaces of the inner wall in an adhesive manner, then the fiber filament non-woven fabric or the fiber felt with fine fixed fibers is paved and fixed, and the fixed mode is the same as the fiber mixed fabric. The carbon fiber filament non-woven fabric coated or presoaked with liquid resin or the carbon fiber filament cross-woven fabric overlapped multi-layer cloth is arranged in the upper die 1 and the lower die 2, and in the die pressing process, most of liquid overflows from a fiber felt of a contact surface under the action of pressure, and the other part overflows from the edge of the die, wherein the liquid overflows from a fine gap 6 of the fiber felt to a larger gap 6 of the fiber cross-woven fabric, overflows to a larger gap 6 of the hard metal wire cross-woven fabric, overflows out of the die to the overflow holes 3 of the die, so that the fiber in the pressed material hardly moves, and the surface is flat.
[ example 2 ]
The upper die 1 and the lower die 2 of the die pressing die can adopt an upper die 1 or a lower die 2 without overflow holes according to the requirements of the pressed objects and the number of layers and the thickness of the pressed objects; only the inner wall of the mould is provided with a fitting part, wherein the inner wall of the mould is firstly paved with a single layer of fixed metal wires or a double layer of metal wires in the warp and weft directions, then paved with a mixed fabric of fixed metal wires, then paved with a mixed fabric of fixed fibers, then paved with a fixed fiber felt, then put into the pressing process after the pressed object, liquid overflows from a gap 6 of the fiber felt surface of the pressed surface firstly, flows to the gap 6 of the mixed fabric of the fibers, most of the liquid flows to the mixed fabric of the metal wires, the other part flows to the edge of the mould along the interlayer, then flows to the metal wire layer, and flows to the edge of the mould along the flowing direction 5 in a groove 4 of the metal wire layer.
Claims (3)
1. The die pressing die and the accessory with the overflow holes comprise an upper die (1), a lower die (2) and the accessory thereof, and are characterized in that a plurality of overflow holes (3) are arranged on a pressing object of the upper die (1) and the lower die (2) facing the outside of a die shell; according to the fitting, firstly, the metal wire mixed fabric is paved and fixed along the inner wall of the die, the metal wire mixed fabric is fixed on the periphery of the edge of the upper die (1) and the periphery of the lower die (2) and a small amount of small dot surfaces of the inner wall, then, the fixed fiber mixed fabric is paved and fixed on the periphery of the edge of the die and the small amount of small dot surfaces of the inner wall in a bonding manner, then, the fiber filament non-woven fabric or the fiber felt with fine fixed fibers is paved and fixed, the fixed manner is the same as the fiber mixed fabric, and the application method is as follows: the carbon fiber filament non-woven fabric coated or presoaked with liquid resin or the carbon fiber filament cross-woven fabric overlapped multi-layer cloth is arranged in the upper die (1) and the lower die (2), in the die pressing process, liquid overflows from the fiber felt of the contact surface mostly under the action of pressure, and overflows from the edge of the die, the liquid overflows from the fine gaps (6) of the fiber felt to the larger gaps (6) of the fiber cross-woven fabric, overflows to the larger gaps (6) of the hard metal wire cross-woven fabric, and overflows to the overflow holes (3) of the die, so that the fiber in the pressed object hardly moves and the surface is flat.
2. The molding die and the accessory with the overflow holes (3) according to claim 1, wherein the upper die (1) and the lower die (2) are arranged outside the die shell in a manner that the pressing object faces the die shell, and the plurality of uniform overflow holes (3) are arranged at partial irregular deformation positions, the non-uniform arrangement is realized, and mechanical drilling or laser perforation is adopted for hole arrangement.
3. The molding die and the fitting with the overflow hole (3) according to claim 1, characterized in that the die upper die (1) and the die lower die (2) comprise flat, oval and shell types.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810956426.2A CN108973164B (en) | 2018-08-21 | 2018-08-21 | Compression molding die with overflow hole, fitting and preparation scheme thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810956426.2A CN108973164B (en) | 2018-08-21 | 2018-08-21 | Compression molding die with overflow hole, fitting and preparation scheme thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108973164A CN108973164A (en) | 2018-12-11 |
| CN108973164B true CN108973164B (en) | 2023-11-17 |
Family
ID=64553826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810956426.2A Active CN108973164B (en) | 2018-08-21 | 2018-08-21 | Compression molding die with overflow hole, fitting and preparation scheme thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108973164B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109774106B (en) * | 2019-02-28 | 2021-01-08 | 泉州市泉港区锋仕机械有限公司 | Arch-shaped die |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0852723A (en) * | 1994-08-09 | 1996-02-27 | Sekisui Chem Co Ltd | Mold for hydraulic inorganic material |
| JPH0890574A (en) * | 1994-09-22 | 1996-04-09 | Matsushita Electric Works Ltd | Production of fiber reinforced resin product |
| WO2000066338A1 (en) * | 1999-04-28 | 2000-11-09 | Kunhyung Co., Ltd. | Fiber reinforced epoxy resin product and method for the manufacture thereof |
| JP2001341111A (en) * | 2000-06-05 | 2001-12-11 | Araco Corp | Apparatus and method for molding fiberboard |
| CN105346101A (en) * | 2015-12-02 | 2016-02-24 | 中国商用飞机有限责任公司北京民用飞机技术研究中心 | Fiber-reinforced thermoplastic resin matrix composite laminate mold pressing method and mold pressing device |
-
2018
- 2018-08-21 CN CN201810956426.2A patent/CN108973164B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0852723A (en) * | 1994-08-09 | 1996-02-27 | Sekisui Chem Co Ltd | Mold for hydraulic inorganic material |
| JPH0890574A (en) * | 1994-09-22 | 1996-04-09 | Matsushita Electric Works Ltd | Production of fiber reinforced resin product |
| WO2000066338A1 (en) * | 1999-04-28 | 2000-11-09 | Kunhyung Co., Ltd. | Fiber reinforced epoxy resin product and method for the manufacture thereof |
| JP2001341111A (en) * | 2000-06-05 | 2001-12-11 | Araco Corp | Apparatus and method for molding fiberboard |
| CN105346101A (en) * | 2015-12-02 | 2016-02-24 | 中国商用飞机有限责任公司北京民用飞机技术研究中心 | Fiber-reinforced thermoplastic resin matrix composite laminate mold pressing method and mold pressing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108973164A (en) | 2018-12-11 |
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