CN108608606B - Die for manufacturing U-shaped composite material integrated reinforced part - Google Patents
Die for manufacturing U-shaped composite material integrated reinforced part Download PDFInfo
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- CN108608606B CN108608606B CN201810502352.5A CN201810502352A CN108608606B CN 108608606 B CN108608606 B CN 108608606B CN 201810502352 A CN201810502352 A CN 201810502352A CN 108608606 B CN108608606 B CN 108608606B
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- 239000002131 composite material Substances 0.000 title claims abstract description 75
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 30
- 230000002787 reinforcement Effects 0.000 claims description 42
- 238000007789 sealing Methods 0.000 claims description 13
- 238000003825 pressing Methods 0.000 claims description 5
- 238000004806 packaging method and process Methods 0.000 claims description 3
- 238000012545 processing Methods 0.000 abstract description 7
- 238000007711 solidification Methods 0.000 abstract description 3
- 230000008023 solidification Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 17
- 238000003466 welding Methods 0.000 description 6
- 230000003014 reinforcing effect Effects 0.000 description 5
- 238000003754 machining Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000007598 dipping method Methods 0.000 description 2
- 238000013022 venting Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
-
- 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
- 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
-
- 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
- B29C2033/385—Manufacturing moulds, e.g. shaping the mould surface by machining by laminating a plurality of layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
- B29L2031/3076—Aircrafts
Abstract
The invention discloses a die for manufacturing an integral reinforced part of a U-shaped composite material, which is used in the technical field of aircraft assembly and manufacture, adopts a female die structure, adopts a detachable left-flap die, right-flap die and lower-flap die combined structure, and solves the problems that the integral reinforced part of the U-shaped composite material cannot be integrally processed and the reinforced part of the U-shaped composite material after processing and solidification is easy to be separated from the die due to small processing operation space of the inner surface of the integral die. The invention is used for integrally forming the integrated U-shaped composite material reinforced part, and is particularly suitable for forming the integrated U-shaped composite material reinforced part with a complex structure.
Description
Technical Field
The invention relates to the technical field of aircraft assembly and manufacturing, in particular to a die for manufacturing an integrated reinforced component made of a U-shaped composite material.
Background
The integral U-shaped composite material reinforced part structure is a structure form which is preferably selected by an aerospace vehicle, has the advantages of small number of parts, few connecting pieces, high structural efficiency-weight ratio, long structural fatigue life and the like, and is generally manufactured in a structure form of a female die forming die, namely, the outer surface of the U-shaped part is a die bonding surface. Because the aerospace vehicle is longer in size and smaller in size in the circumferential direction, the integral die is small in inner surface machining operation space and even cannot be machined, the U-shaped part is difficult to separate from the die after being solidified and molded, and if the U-shaped part is welded after being machined in a segmented mode, the integral air tightness of the die cannot be guaranteed. In addition, the inner space of the U-shaped part is small, the ribs are difficult to position, and the position deviation of the ribs is large and the straightness is poor after the part is solidified.
Disclosure of Invention
The invention provides a die for manufacturing an integral reinforced part of a U-shaped composite material, which is of a female die structure, and a detachable combined structure is adopted for the U-shaped main die, so that the problems that the integral processing of the reinforced part of the U-shaped composite material is impossible and the reinforced part of the U-shaped composite material after processing and solidification is easy to deviate from the die due to small processing operation space of the inner surface of the integral die are solved.
The invention is realized by the following technical scheme: the die for manufacturing the U-shaped composite material integrated reinforcement component comprises a U-shaped main die for forming the integrated U-shaped composite material reinforcement component, a laying die and a soft die forming die; the U-shaped composite material reinforcement component comprises a U-shaped area in the middle and L-shaped areas which are arranged at two sides of the U-shaped area in a mirror symmetry mode.
The U-shaped main die comprises a right split die, a left split die and a lower split die which form a U-shaped section, and the left split die and the right split die are respectively and detachably connected to two ends of the lower split die; the inner surface of the U-shaped main die is determined according to the theoretical shape of the U-shaped composite material reinforcement part; wherein the laying mould comprises a U-shaped inner skin laying mould and an L-shaped piece laying mould; the soft mold comprises a U-shaped inner skin soft mold for manufacturing a U-shaped inner skin soft mold and an L-shaped piece soft mold for manufacturing an L-shaped piece soft mold.
The U-shaped inner skin laying die working profile is consistent with the shape of the inner surface of a U-shaped area of the U-shaped composite reinforcement component; the shape of the working profile of the L-shaped piece soft mold forming mold is consistent with the shape of the inner surface of the L-shaped area of the U-shaped composite material reinforcement component; the working profile of the U-shaped inner skin soft mold forming mold is matched with the shape of the inner surface of the U-shaped area of the U-shaped composite material reinforcement component. Namely: the working profile of the L-shaped piece laying die and the working profile of the L-shaped piece soft die forming die are determined according to the theoretical shape of the inner surface of the L-shaped area of the U-shaped composite material reinforcement part, and the working profile of the U-shaped inner skin laying die and the working profile of the U-shaped inner skin soft die forming die are determined according to the theoretical shape of the inner surface of the U-shaped area of the U-shaped composite material reinforcement part.
The combined structure of the U-shaped main die is as follows: the U-shaped main die is formed by detachably combining a left die, a right die and a lower die. The left die, the right die and the lower die are independently machined, so that the problem that the inner surface of the die cannot be machined due to small machining operation space of the inner surface of the integrated die is solved.
Preferably, the left and right dies are respectively fastened and positioned with the lower die through detachable positioning nails. The vacuum sealing areas for sealing the vacuum bags are arranged at the joints of the left die, the right die and the lower die, so that the dies do not need to be connected into a whole by welding, and the problem of welding deformation of the dies is solved. Meanwhile, the vacuum sealing area is adopted to seal the joint of the left valve die, the lower valve die, the right valve die and the lower valve die of the U-shaped main die, so that air leakage is avoided, and the problem of poor air tightness of the combined U-shaped main die is solved.
Further, a U-shaped positioning block is detachably arranged on the working surface of the U-shaped inner skin soft mold forming die through positioning nails and used for positioning in the U-shaped inner skin soft mold forming process.
Further, a rib positioning bracket is arranged on the U-shaped main die; one end of the rib positioning support is detachably connected with the left valve die or the right valve die, and the other end of the rib positioning support is detachably connected with the U-shaped inner skin soft die manufactured by the U-shaped inner skin soft die forming die. The rib positioning support is used for realizing accurate positioning of the U-shaped inner skin soft mold in the forming process of the U-shaped composite material reinforced part, so that the position of the reinforcing rib in the product is accurate, and the appearance of the U-shaped composite material reinforced part is not easy to deform.
Preferably, the rib positioning support comprises a left support and a right support which are symmetrically arranged at the upper ends of the left valve die and the right valve die respectively, one end of the left support, which is far away from the U-shaped main die, is detachably connected with the left side face of the working molded surface of the U-shaped inner skin soft die, and one end of the right support, which is far away from the U-shaped main die, is detachably connected with the right side face of the working molded surface of the U-shaped inner skin soft die.
Preferably, the rib positioning support is detachably connected with the U-shaped main die and the U-shaped inner skin soft die through positioning nails respectively.
Further, the U-shaped main die, the laying die and the soft die forming die are of frame-template structures, and the frame-template structures are formed by the frame and templates sleeved outside the frame. The use of the frame-form construction improves the venting of the mold and reduces weight.
Further, the finish degree of the matching surface of the left die and the lower die is not lower than Ra1.6; the finish degree of the matching surface of the right die and the lower die is not lower than Ra1.6, and the finish degree of the working molded surfaces of the U-shaped main die, the paving die and the soft die forming die is not lower than Ra1.6. The air tightness value of the U-shaped main die, the laying die and the soft die forming die is not more than-0.093 MPa.
The invention has the beneficial effects that:
(1) The die for manufacturing the U-shaped composite material integral reinforcement component adopts a female die structure, and the U-shaped main die adopts a detachable combined structure, so that the problems that the U-shaped composite material reinforcement component cannot be integrally processed and the U-shaped composite material reinforcement component after processing and solidification is easy to deviate from the die due to small processing operation space of the inner surface of the integral die are solved.
(2) The mould for manufacturing the U-shaped composite material integrated reinforced part adopts a frame-template structure, improves the ventilation of the mould and reduces the weight.
(3) The mold for manufacturing the U-shaped composite material integrated reinforcement component provided by the invention adopts the vacuum sealing area provided with the packaging vacuum bag for sealing, so that air leakage is avoided, the problem of poor air tightness of the combined U-shaped main mold is solved, and meanwhile, the positioning nails are adopted for detachable connection, so that the mold is not required to be connected into a whole by welding, and the problem of deformation of the mold due to welding is solved.
Drawings
FIG. 1 is an isometric view of a U-shaped integrated composite reinforcement member (product) made in accordance with the present invention;
FIG. 2 is a cross-sectional view of the composite part of FIG. 1 made in accordance with the present invention;
FIG. 3 is an exploded view of the components of FIG. 2 made in accordance with the present invention;
FIG. 4 is a cross-sectional view of the U-shaped master mold of the present invention;
FIG. 5 is an exploded view of the components of FIG. 4;
FIG. 6 is a cross-sectional view of a U-shaped inner skin soft mold forming die of the present invention;
FIG. 7 is a cross-sectional view of a soft mold forming die for L-shaped pieces according to the present invention;
FIG. 8 is a cross-sectional view of an L-shaped piece lay-up die of the present invention;
FIG. 9 is a cross-sectional view of the U-shaped inner skin lay-up die of the present invention;
FIG. 10 is a schematic view of a soft mold for manufacturing a U-shaped inner skin according to the present invention;
FIG. 11 is a schematic view of a soft mold of an L-shaped piece made in accordance with the present invention;
FIG. 12 is a schematic illustration of a laid-up U-shaped outer skin;
FIG. 13 is a schematic illustration of a lay-up L-shaped member;
FIG. 14 is a schematic illustration of a lay-up U-shaped inner skin;
FIG. 15 is a schematic diagram showing the overall state after assembly;
in the figure: 100-U-shaped composite material reinforcing parts, 101-L-shaped areas, 102-U-shaped areas, 1-right-flap molds, 2-left-flap molds, 3-lower-flap molds, 4-matching surfaces, 5-U-shaped inner skin soft mold forming molds, 6-vacuum bag sealing areas, 8-templates, 9-frames, 10-U-shaped inner skin soft molds, 11-U-shaped positioning blocks, 12-L-shaped piece soft molds, 13-U-shaped outer skins, 14-L-shaped pieces, 15-L-shaped piece soft mold forming molds, 16-U-shaped inner skins, 17-rib positioning supports, 18-L-shaped piece laying molds, 19-U-shaped inner skin laying molds and 21-sealing vacuum bags.
Detailed Description
The present invention will be described in further detail with reference to examples, but embodiments of the present invention are not limited thereto.
The working profiles mentioned in the present invention are the mould surfaces used in the present invention when laying up the prepreg or prepreg and the mould surfaces used in the forming process. The theoretical shape mentioned in the present invention refers to the theoretical size and shape of the integrated U-shaped composite reinforcement member 100 to be formed and the mold for forming the U-shaped composite reinforcement member 100, i.e., the size and shape on the design drawing.
Example 1
As shown in fig. 4 to 11, a mold for manufacturing an integrated reinforcing component of a U-shaped composite material comprises a U-shaped main mold, a laying mold and a soft mold forming mold for forming the integrated reinforcing component 100 of the U-shaped composite material; the U-shaped composite reinforcement member 100 includes a U-shaped region 102 in the middle and L-shaped regions 101 disposed mirror symmetrically on both sides of the U-shaped region 102.
The U-shaped main die comprises a right split die 1, a left split die 2 and a lower split die 3 which form a U-shaped section, wherein the left split die 2 and the right split die 1 are respectively detachably connected to two ends of the lower split die 3; the inner surface of the U-shaped main die is determined according to the theoretical shape of the U-shaped composite material reinforcement part 100; wherein the laying molds comprise a U-shaped inner skin laying mold 19 and an L-shaped piece laying mold 18; wherein the soft mold comprises a U-shaped inner skin soft mold 5 for manufacturing a U-shaped inner skin soft mold 10 and an L-shaped piece soft mold 15 for manufacturing an L-shaped piece soft mold 12.
Wherein the working profile of the L-shaped piece laying mold 18 is consistent with the shape of the inner surface of the L-shaped region 101 of the U-shaped composite material reinforcement member 100, and the shape of the working profile of the U-shaped inner skin laying mold 19 is consistent with the shape of the inner surface of the U-shaped region 102 of the U-shaped composite material reinforcement member 100; the shape of the working profile of the L-shaped piece soft mold 15 is consistent with the shape of the inner surface of the L-shaped area 101 of the U-shaped composite reinforcement part 100; the working profile of the U-shaped inner skin soft mold forming mold 5 is matched with the shape of the inner surface of the U-shaped area 102 of the U-shaped composite reinforcement part 100.
I.e. the working profile of the L-shaped piece lay-up mould 18 and the working profile of the L-shaped soft mould 12 forming mould are both determined according to the theoretical profile of the inner surface of the L-shaped region 101 of the U-shaped composite reinforcement member 100, and the working profile of the U-shaped inner skin lay-up mould 19 and the working profile of the U-shaped inner skin soft mould forming mould 5 are both determined according to the theoretical profile of the inner surface of the U-shaped region 102 of the U-shaped composite reinforcement member 100.
The combined structure of the U-shaped main die is as follows: the U-shaped main die is formed by detachably combining a left die 2, a right die 1 and a lower die 3. The left die 2, the right die 1 and the lower die 3 are independently machined, so that the problem that the inner surface of the die cannot be machined due to small machining operation space of the inner surface of the integrated die is solved.
Preferably, the left die 2 and the right die 1 are respectively fastened and positioned with the lower die 3 through detachable positioning nails, so that the dies are not required to be connected into a whole by welding, and the problem of deformation of the dies due to welding is solved.
As shown in fig. 1 to 3, the integrated U-shaped composite reinforcement member 100 prepared according to the present invention includes a U-shaped region 102 in the middle and L-shaped regions 101 disposed at both sides of the U-shaped region 102 in mirror symmetry. The L-shaped piece laying mold 18 is pre-formed by laying pre-pressing to obtain an L-shaped piece 14, and the U-shaped main mold is formed by laying pre-pressing to obtain a U-shaped outer skin 13. The U-shaped inner skin soft mold forming mold 5 and the L-shaped piece soft mold forming mold 15 are used for preparing the U-shaped inner skin soft mold 10 and the L-shaped piece soft mold 12. The U-shaped inner skin mold 10 and L-shaped piece mold 12 are adapted to be formed in an integrated U-shaped composite reinforcement member 100 to be placed over the U-shaped inner skin 16 and L-shaped piece 14, respectively, for positioning and forming. Thus, the working profile, i.e. the inner surface, of the U-shaped main mould coincides with the outer surface of the U-shaped composite reinforcement part 100; the working profile of the L-shaped piece laying die 18 is consistent with the inner surface of the L-shaped area 101 of the U-shaped composite reinforcement part 100; the working profile of the U-shaped inner skin overlaying die 19 is consistent with the inner surface of the U-shaped area 102 of the U-shaped composite reinforcement member 100; the working profile of the U-shaped inner skin soft mold forming mold 5 is determined by the working profile of the U-shaped inner skin laying mold 19, namely the inner surface of the U-shaped region 102 of the U-shaped composite reinforcement member 100; the working profile of the forming die of the L-shaped soft die 12 is determined by the working profile of the L-shaped piece lay-up die 18, i.e. the inner surface of the L-shaped region 101 of the U-shaped composite reinforcement member 100.
The forming method of the integrated U-shaped composite reinforced component 100 specifically comprises the following steps:
a: manufacturing soft mold
A1: preparing a U-shaped inner skin soft mold 10: as shown in fig. 10, two layers of rubber sheets and 2-3 layers of prepregs are paved on the working surface of the U-shaped inner skin soft mold forming mold 5, and after a vacuum bag is packaged, the rubber sheets and the 2-3 layers of prepregs are vulcanized and formed in an autoclave. The process conditions are as follows: the temperature is 175-185 ℃, the time is 90-120 min, the pressure is 0.40-0.70 MPa, and the whole process is kept in full vacuum.
Preferably, a U-shaped positioning block 11 is detachably arranged in the U-shaped inner skin soft mold forming die 5. Preferably, two ends of the U-shaped positioning block 11 are fixed on templates at two ends of the working molded surface of the U-shaped inner skin soft mold molding die 5 through positioning nails, so that the laid rubber sheet and prepreg are fixed on the working molded surface and are not deformed in the vulcanization molding process;
a2: preparing an L-shaped piece soft mold 12: as shown in fig. 11, two layers of rubber sheets and 2-3 layers of prepregs are paved on the working surface of the soft mold 15 of the L-shaped piece, and after vacuum bags are packaged, the rubber sheets and the 2-3 layers of prepregs are vulcanized and molded in an autoclave. The process conditions are as follows: the temperature is 175-185 ℃, the time is 90-120 min, the pressure is 0.40-0.70 MPa, and the whole process is kept in full vacuum.
B: preparation of an Integrated U-shaped composite reinforced component
B1: combining the U-shaped main die: as shown in fig. 4, the left die 2, the right die 1 and the lower die 3 of the U-shaped main die are tightly combined together by fasteners; when the left die 2, the right die 1 and the lower die 3 of the U-shaped main die are positioned and fastened through positioning nails, the positioning nails are required to be screwed down;
b2: the U-shaped outer skin 13 is formed by laying and folding: as shown in fig. 12, the skin is paved on the inner surface of the U-shaped main die by using the dipping material, and then the vacuum bag is packaged and then prepressed and formed in an autoclave; the process conditions are as follows: the temperature is less than 90 ℃, the time is less than 30min, the pressure is 0.10-0.40 MPa, and the whole process is kept in full vacuum;
b3: the L-shaped piece 14 is formed by laying and folding: as shown in fig. 13, the skin is laid with the dipping material on the working surface of the L-shaped piece laying mold 18, and then the vacuum bag is packaged and then pre-pressed and molded in an autoclave; the process conditions are as follows: the temperature is less than 90 ℃, the time is less than 30min, the pressure is 0.10-0.40 MPa, and the whole process is kept in full vacuum; this process is repeated to obtain two L-shaped members 14;
b4: the U-shaped inner skin 16 is formed by laying: as shown in fig. 14, the skin is laid with feed on the working surface of the U-shaped inner skin laying mold 19, and then vacuum bags are packaged and then pre-pressed in an autoclave for molding; the process conditions are as follows: the temperature is less than 90 ℃, the time is less than 30min, the pressure is 0.10-0.40 MPa, and the whole process is kept in full vacuum;
b5: as shown in fig. 15, the combination of the integrated U-shaped composite reinforcement members 100: the rib is paved on the U-shaped outer skin 13 prepared in the step B2, then the U-shaped inner skin 16 prepared in the step B4 is placed in the middle of the U-shaped outer skin 13 in the U-shaped main die, and the U-shaped inner skin soft die 10 is placed on the U-shaped inner skin 16, so that the placement positions of the L-shaped pieces 14 are reserved symmetrically on two sides; then the two L-shaped pieces 14 prepared in the step B3 are taken down and symmetrically arranged on two sides of the U-shaped inner skin 16 in opposite directions, and then the L-shaped piece soft mold 12 is arranged on the L-shaped piece 14; pressing and fitting the U-shaped inner skin soft mold 10 and the L-shaped piece soft mold 12; the ribs are clamped between the U-shaped outer skin 13 and the L-shaped piece 14 as well as the U-shaped skin;
b6: shaping of the integrated U-shaped composite reinforcement part 100: an inner vacuum bag is packaged in the U-shaped main die, an outer vacuum bag is packaged at the joint of the left die 2 and the lower die 3 and the joint of the right die and the lower die 3, and the outer vacuum bag and the inner vacuum bag are bonded together; packaging, and then curing and forming in an autoclave;
b7: demolding: after curing, the auxiliary materials required by curing are removed, and the U-shaped inner skin soft mold 10 and the L-shaped piece soft mold 12 are removed, so that the product can be taken out from the U-shaped main mold. When the appearance of the product is complex and can not be conveniently taken out, the left and right dies 2 and 1 can be disassembled, so that the product can be separated from the left and right dies 2 and 1, and the demolding can be smoothly performed.
Preferably, the U-shaped main die is provided with a rib positioning bracket 17; one end of the rib positioning support 17 is detachably connected with the left valve die 2 or the right valve die 1, and the other end of the rib positioning support 17 is detachably connected with the U-shaped inner skin soft die 10 manufactured by the U-shaped inner skin soft die forming die. The rib positioning support 17 realizes accurate positioning of the U-shaped inner skin soft mold 10 in the forming process of the U-shaped composite material reinforced part, so that the position of the reinforcing ribs in the product is accurate, and the appearance of the U-shaped composite material reinforced part is not easy to deform.
In step B5, after the U-shaped inner skin 16 prepared in step B4 is placed on the U-shaped outer skin 13 in the U-shaped main mold and the U-shaped inner skin soft mold 10 is placed, one end of the rib positioning bracket 17 is fixed at the upper end of the left valve mold 2 or the right valve mold 1, and the other end of the rib positioning bracket 17 is connected with the U-shaped inner skin soft mold 10 for fixing the accurate position of the U-shaped inner skin 16.
Preferably, the rib positioning bracket 17 comprises a left bracket and a right bracket which are symmetrically arranged at the upper ends of the left valve die 2 and the right valve die 1 respectively, one end of the left bracket, which is far away from the U-shaped main die, is detachably connected with the left side surface of the working profile of the U-shaped inner skin soft die 10, and one end of the right bracket, which is far away from the U-shaped main die, is detachably connected with the right side surface of the working profile of the U-shaped inner skin soft die 10.
Preferably, the rib positioning bracket 17 is detachably connected with the U-shaped main die and the U-shaped inner skin soft die 10 through positioning nails respectively.
Example 2
This example was modified on the basis of example 1 in that: the vacuum sealing areas for sealing the vacuum bags 21 are arranged at the joints of the left and right clack molds 1 and 3, and are used for sealing the joints of the left and right clack molds 2 and 3 and the joints of the right and lower clack molds 1 and 3 of the U-shaped main mold, so that air leakage is avoided, and the problem of poor air tightness of the combined U-shaped main mold is solved. The width of the vacuum bag sealing area 6 can be 30 mm-200 mm according to the size of the U-shaped composite reinforcement part 100.
Other portions of this embodiment are substantially the same as those of embodiment 1, and thus will not be described in detail.
Example 3
This embodiment is an improvement over embodiments 1 or 2 in that: the finish degree of the matching surface of the left die 2 and the lower die 3 is not lower than Ra1.6; the finish degree of the matching surface of the right die 1 and the lower die 3 is not lower than Ra1.6, so that the air tightness of the left die and the lower die 3 and the air tightness of the right die 1 and the lower die 3 are better when the connection and the fastening are performed, and the air tightness numerical value of the U-shaped main die, the paving die and the soft die forming die is not higher than-0.093 MPa.
Preferably, the working surface of the U-shaped main mold, the paving mold and the soft mold forming mold has the finish degree not lower than Ra1.6, so that the surface of the obtained U-shaped composite reinforced part 100 is smoother and has small deformation.
Other portions in this embodiment are substantially the same as those in embodiment 1 or 2, and thus will not be described in detail.
Example 4
The present embodiment is an improvement on the basis of any one of embodiments 1 to 3, and the improvement is that: the U-shaped main die, the laying die and the soft die forming die are of frame-template structures, and the frame-template structures are formed by the frame 9 and the template 8 sleeved outside the frame 9. The use of the frame-form construction improves the venting of the mold and reduces weight.
Other portions of this embodiment are substantially the same as any of embodiments 1 to 3, and thus will not be described in detail.
The foregoing description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any simple modification, equivalent variation, etc. of the above embodiment according to the technical matter of the present invention fall within the scope of the present invention.
Claims (10)
1. A die for manufacturing an integrated reinforced component of a U-shaped composite material comprises a U-shaped main die for forming the integrated U-shaped composite reinforced component (100), a laying die and a soft die forming die; the U-shaped composite material reinforcement component (100) comprises a U-shaped area (102) positioned in the middle and L-shaped areas (101) arranged at two sides of the U-shaped area (102) in a mirror symmetry mode, and is characterized in that:
the U-shaped main die comprises a right split die (1), a left split die (2) and a lower split die (3) which form a U-shaped section, wherein the left split die (2) and the right split die (1) are respectively and detachably connected to two ends of the lower split die (3); the shape of the inner molded surface of the U-shaped main mold is consistent with the shape of the outer surface of the U-shaped composite material reinforcement part (100);
wherein the laying mould comprises a U-shaped inner skin laying mould (19) and an L-shaped piece laying mould (18); the L-shaped piece laying die (18) is used for obtaining an L-shaped piece (14) through laying pre-pressing forming in advance, and the U-shaped main die is used for obtaining a U-shaped outer skin (13) through laying pre-pressing forming;
wherein the soft mold comprises a U-shaped inner skin soft mold (5) for manufacturing a U-shaped inner skin soft mold (10) and an L-shaped piece soft mold (15) for manufacturing an L-shaped piece soft mold (12);
the working profile of the L-shaped piece laying die (18) is consistent with the shape of the inner surface of the L-shaped area (101) of the U-shaped composite material reinforcement part (100), and the shape of the working profile of the U-shaped inner skin laying die (19) is consistent with the shape of the inner surface of the U-shaped area (102) of the U-shaped composite material reinforcement part (100); the shape of the working profile of the L-shaped piece soft mold forming mold (15) is consistent with the shape of the inner surface of the L-shaped area (101) of the U-shaped composite material reinforcement component (100); the working profile of the U-shaped inner skin soft mold forming mold (5) is matched with the shape of the inner surface of the U-shaped area (102) of the U-shaped composite material reinforcement component (100).
2. A mould for manufacturing a U-shaped composite integral reinforced part according to claim 1, wherein: the joints of the left valve die (2), the right valve die (1) and the lower valve die (3) are respectively provided with a vacuum sealing area for packaging and sealing the vacuum bag (21).
3. A mould for manufacturing a U-shaped composite integral reinforced part according to claim 1, wherein: the left valve die (2) and the right valve die (1) are respectively fastened and positioned with the lower valve die (3) through detachable positioning nails.
4. A mould for manufacturing a U-shaped composite integral reinforced part according to claim 1, wherein: a U-shaped positioning block (11) is detachably arranged on the working surface of the U-shaped inner skin soft mold forming die (5) through positioning nails.
5. A mould for manufacturing a U-shaped composite integral reinforced part according to claim 1, wherein: the U-shaped main die is provided with a rib positioning bracket (17); one end of the rib positioning support (17) is detachably connected with the left valve die (2) or the right valve die (1), and the other end of the rib positioning support (17) is detachably connected with the U-shaped inner skin soft die (10) manufactured by the U-shaped inner skin soft die forming die (5).
6. A mold for manufacturing a U-shaped composite integral reinforcement member according to claim 5, wherein: the rib positioning support (17) comprises a left support arranged at the upper end of the left valve die (2) and a right support arranged at the upper end of the right valve die (1), wherein the left support and the right support are symmetrically arranged, one end of the left support, which is far away from the U-shaped main die, is detachably connected with the left side face of the working profile of the U-shaped inner skin soft die (10), and one end of the right support, which is far away from the U-shaped main die, is detachably connected with the right side face of the working profile of the U-shaped inner skin soft die (10).
7. A mold for manufacturing a U-shaped composite integral reinforcement member according to claim 5, wherein: the rib positioning support (17) is detachably connected with the U-shaped main die and the U-shaped inner skin soft die (10) through positioning nails respectively.
8. A mould for manufacturing a U-shaped composite integral reinforced component according to any one of claims 1 to 7, wherein: the U-shaped main die, the laying die and the soft die forming die are of a frame-template structure formed by a frame (9) and a template (8) sleeved on the outer surface of the frame (9).
9. A mould for manufacturing a U-shaped composite integral reinforced component according to any one of claims 1 to 7, wherein: the finish degree of the matching surface of the left valve die (2) and the lower valve die (3) is not lower than Ra1.6, and the finish degree of the matching surface of the right valve die (1) and the lower valve die (3) is not lower than Ra1.6.
10. A mould for manufacturing a U-shaped composite integral reinforced component according to any one of claims 1 to 7, wherein: the working surface of the U-shaped main die, the paving die and the soft die forming die has the smooth finish not lower than Ra1.6.
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| CN201810502352.5A CN108608606B (en) | 2018-05-23 | 2018-05-23 | Die for manufacturing U-shaped composite material integrated reinforced part |
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| CN201810502352.5A CN108608606B (en) | 2018-05-23 | 2018-05-23 | Die for manufacturing U-shaped composite material integrated reinforced part |
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| CN108608606B true CN108608606B (en) | 2024-03-15 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110480883A (en) * | 2019-08-13 | 2019-11-22 | 成都飞机工业（集团）有限责任公司 | It is a kind of to close the forming frock mold that material part is answered at angle for forming big moldeed depth U-shaped |
| CN111923452A (en) * | 2020-06-22 | 2020-11-13 | 成都飞机工业（集团）有限责任公司 | Forming method for controlling curing deformation of composite material hyperboloid skin |
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| CN208664158U (en) * | 2018-05-23 | 2019-03-29 | 成都飞机工业（集团）有限责任公司 | It is a kind of for manufacturing the mold of U-shaped composite material integration reinforcement component |
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