CN115008791A - Flat plate forming tool and forming process for plate-shaped composite material - Google Patents
Flat plate forming tool and forming process for plate-shaped composite material Download PDFInfo
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- CN115008791A CN115008791A CN202210661519.9A CN202210661519A CN115008791A CN 115008791 A CN115008791 A CN 115008791A CN 202210661519 A CN202210661519 A CN 202210661519A CN 115008791 A CN115008791 A CN 115008791A
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- 239000002131 composite material Substances 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 19
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- 229910052751 metal Inorganic materials 0.000 claims abstract description 52
- 239000002184 metal Substances 0.000 claims abstract description 51
- 239000004033 plastic Substances 0.000 claims abstract description 46
- 239000000463 material Substances 0.000 claims abstract description 25
- 239000011347 resin Substances 0.000 claims abstract description 20
- 229920005989 resin Polymers 0.000 claims abstract description 20
- 239000004744 fabric Substances 0.000 claims description 20
- 238000000465 moulding Methods 0.000 claims description 11
- 239000003292 glue Substances 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 5
- 239000000443 aerosol Substances 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 239000004677 Nylon Substances 0.000 claims description 3
- 239000002390 adhesive tape Substances 0.000 claims description 3
- 238000013461 design Methods 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 3
- 239000003365 glass fiber Substances 0.000 claims description 3
- 229920001778 nylon Polymers 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 3
- 229920006303 teflon fiber Polymers 0.000 claims description 3
- 238000009941 weaving Methods 0.000 claims description 3
- 230000035699 permeability Effects 0.000 claims description 2
- 238000007493 shaping process Methods 0.000 claims description 2
- 239000010408 film Substances 0.000 abstract description 10
- 239000010409 thin film Substances 0.000 abstract description 8
- 239000012530 fluid Substances 0.000 abstract description 6
- 238000009827 uniform distribution Methods 0.000 abstract description 3
- 239000000853 adhesive Substances 0.000 description 6
- 230000001070 adhesive effect Effects 0.000 description 6
- 238000009755 vacuum infusion Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
- B29C70/34—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation
- 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
- B29C70/40—Shaping or impregnating by compression not applied
- B29C70/42—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles
- B29C70/44—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using isostatic pressure, e.g. pressure difference-moulding, vacuum bag-moulding, autoclave-moulding or expanding rubber-moulding
- B29C70/443—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using isostatic pressure, e.g. pressure difference-moulding, vacuum bag-moulding, autoclave-moulding or expanding rubber-moulding and impregnating by vacuum or injection
-
- 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
- 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
- B29C70/549—Details of caul plates, e.g. materials or shape
-
- 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
- B29L2007/00—Flat articles, e.g. films or sheets
- B29L2007/002—Panels; Plates; Sheets
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Moulds, Cores, Or Mandrels (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention provides a plate-shaped composite material forming flat plate tool and a forming process, which comprise a metal framework plate, a plastic screen plate and a thin film layer, wherein the metal framework plate is arranged on the upper part of the plastic screen plate, the plastic screen plate is arranged on the upper part of the thin film layer, the metal framework plate is composed of a plurality of detachable unit blocks, a plurality of conical holes which are uniformly distributed are arranged on the unit blocks, and a plurality of through holes which are uniformly distributed are also arranged on the plastic screen plate. The size of the metal framework plate can be conveniently adjusted according to the area of the plate to be formed, the application range is wide, the taper holes can uniformly disperse the surface pressure of the product, and the resin fluid poured into the forming tool has the function of primary uniform flow guide; the plastic plate has certain flexibility and extension performance and can be well attached to the metal framework plate, and the through holes are used for fine and uniform distribution of the injected resin fluid; the fully-transparent film material can remove the forming and demolding traces caused by the permeation holes, and fully ensures the surface flatness of the formed plate.
Description
Technical Field
The invention relates to the technical field of large-scale composite material injection molding, in particular to a plate-shaped composite material molding flat plate tool and a molding process.
Background
At present, large sandwich composite material plates have application in various fields due to the advantages of large structural strength, low specific gravity and the like, for example, the large sandwich composite material plates can be applied to the fields of marine wind energy device spoiler forming, vortex generators for enhancing the efficiency of wind power generation blades, wind power generation blade rear cover plate forming, building door and window forming and the like. The large-scale composite material plate, especially the sandwich material plate and other biplane products can not be molded by adopting a mold pressing mode, and the vacuum auxiliary pouring molding process is the technology with the widest application range for molding the large-scale sandwich composite material plate due to the advantages of low cost, wide application range and the like. With this technique, it is inevitable to use a flow-guiding medium. For example, patent publication No. CN104070684A in the prior art discloses a method for vacuum infusion molding of sandwich composite material without pipeline, dry laying is performed on a mold, a flow guide medium is laid on the dry laying, only one layer of diaphragm film is arranged between the flow guide medium and a product, after the product is molded, the flow guide surface has obvious unevenness, which brings huge workload for subsequent flatness maintenance, and even for a use scene with precise assembly requirements, the defect is unacceptable.
Disclosure of Invention
In view of the above, the present invention provides a plate-shaped composite material forming tool and a forming process, so as to solve the problem of the prior art that the surface of the perfusion forming process has obvious unevenness.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
the utility model provides a dull and stereotyped frock of platelike combined material shaping, includes metal skeleton board, plastic sieve and thin layer, metal skeleton board set up in the upper portion of plastic sieve, the plastic sieve set up in the upper portion of thin layer, metal skeleton board comprises detachable polylith block unit, be provided with a plurality of taper holes on the unit piece, taper hole evenly distributed is in on the unit piece, also set up a plurality of evenly distributed's through-hole on the plastic sieve, the thin layer sets up to the full permeability material of resin for filling.
Furthermore, the unit blocks are arranged into square structures, the taper holes penetrate through the upper surfaces and the lower surfaces of the unit blocks, clamping grooves and buckles are arranged on the side surfaces of the unit blocks, and the clamping grooves on the side surfaces of the unit blocks are detachably connected with the buckles on the side surfaces of the adjacent unit blocks.
Furthermore, four side surfaces of the unit block are all set to be planes, and the flatness is controlled within 0.1 mm. The metal unit blocks can be conveniently and accurately butted for use, and the overlarge gap between the two adjacent unit blocks after butt joint is avoided.
Furthermore, connecting structures with different structures are arranged on the four side faces, a T-shaped clamping groove is formed in the first side face, an assembling pin shaft is arranged on the second side face, a T-shaped buckle is arranged on the third side face, a circular pin hole is formed in the fourth side face, and the first side face, the second side face, the third side face and the fourth side face are arranged along the periphery of the unit block in an anticlockwise mode.
Further, the T-shaped buckle can slide in the T-shaped clamping groove.
Further, T type buckle includes connecting portion and anticreep portion, connecting portion with the third side is connected, the anticreep portion sets up connecting portion are kept away from the one end of third side, the thickness of anticreep portion is greater than connecting portion T type draw-in groove includes wide slot part and narrow groove portion, wide slot part sets up and is being close to one side of fourth side, narrow groove portion sets up and is being close to one side of second side, the height of wide slot part is greater than the height of narrow slot part.
Furthermore, the taper hole is a taper hole with the upper surface gradually contracting to the lower surface, and the size of the taper hole is controlled to be 20-100 mm.
Further, the aperture size of the through holes is controlled to be 3-5 mm, the hole site interval is set to be 30-50 mm, and the thickness of the plastic sieve plate is set to be 1-5 mm.
Further, the thin film layer is set to be flexible mesh cloth, the flexible mesh cloth is formed by nylon or Teflon fibers through warp and weft weaving, and the fiber gaps are set to be less than or equal to 0.1 mm.
Compared with the prior art, the plate-shaped composite material forming flat plate tool has the following advantages:
the size of the metal framework plate can be conveniently adjusted according to the area of the plate to be formed through the arrangement of the metal framework plate which is detachably assembled, the application range is wide, the uniformly distributed taper holes can uniformly disperse the surface pressure of a product, and the resin fluid which is poured into the forming tool has the function of primary uniform flow guide; the plastic plate has certain flexibility and extensibility, and can be well attached to the metal framework plate, and a large number of vertical through holes on the plastic sieve plate are used for fine uniform distribution of the injected resin fluid; the setting of the full-transparent film material can remove the forming demolding traces caused by the permeation holes, and the surface flatness of the formed plate is fully ensured. The method realizes the double-plane forming technology of the large-scale composite material plate, avoids the unevenness of the non-mold surface of the product caused by the retention of a diversion medium by adopting a vacuum infusion process, provides a good substrate for the subsequent assembly and coating processes of the product, and ensures the flatness forming of the non-mold surface of the product without maintenance. And the main components of the plane forming equipment can be detached for repeated use, so that the convenience of the equipment is improved, and the input cost is reduced.
The invention also provides a double-plane forming process of the plate-shaped composite material, and the forming tool is used.
S1, splicing the metal framework plates according to the area of the material to be formed, and uniformly smearing the metal plates integrally by using a chemical inert material such as demolding wax after splicing;
s2, flatly bonding the plastic sieve plate to the lower surface of the metal framework plate by using a strong adhesive with the thickness less than 0.1mm, such as a glass fiber adhesive tape, wherein the through hole of the plastic sieve plate is used as a resin flow guide channel;
s3, after the plastic sieve plate is fixed, flatly adhering the flexible reticulated cloth to the lower surface of the plastic sieve plate by adopting aerosol spray glue to complete the assembly of the whole flat plate;
s4, finishing fabric layer pretreatment on a planar mold according to the design requirements of the plate to be molded, placing the assembled flat plate tool above the fabric layer, fully covering the flat plate tool with a vacuum belt film, and finishing the injection curing operation of the large part by adopting a vacuum injection process to finish the molding of the large composite material double-planar plate product;
and S5, after the product is demoulded, determining whether the reticulate cloth is torn off or not according to the target requirement of the product.
The molding process has the same advantages as the molding tool in comparison with the prior art, and is not described in detail herein.
Drawings
FIG. 1 is a schematic view of a vacuum infusion molding tool according to an embodiment of the present invention;
FIG. 2 is an axial view of a sheet metal cell block structure according to an embodiment of the present invention;
FIG. 3 is another perspective axial view of a block of metal plates according to an embodiment of the present invention;
FIG. 4 is a top view of a block of sheet metal elements according to an embodiment of the present invention;
FIG. 4a is a bottom view of a block of sheet metal units according to an embodiment of the present invention;
FIG. 4b is a side view;
FIG. 4c is another perspective side view;
FIG. 5 is an axial view of a metal skeleton plate according to an embodiment of the present invention;
FIG. 6 is a top view of a metal skeleton plate according to an embodiment of the present invention;
fig. 7 is a schematic structural view of a plastic screen plate according to an embodiment of the present invention.
Description of reference numerals:
1-vacuum belt membrane, 2-metal framework plate, 3-plastic sieve plate, 4-film layer, 5-fabric layering, 6-mould, 7-unit block, 8-taper hole, 9-clamping groove, 9 a-wide groove part, 9 b-narrow groove part, 10-assembly pin shaft, 11-buckle, 11 a-connecting part, 11 b-anti-dropping part, 12-round pin hole, 13-through hole
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. But are not intended to limit the scope of the present invention.
The invention provides a plate-shaped composite material forming flat plate tool which comprises a metal framework plate 2, a plastic sieve plate 3, a thin film layer 4 and a flat mold 6, wherein the metal framework plate 2 is arranged on the upper part of the plastic sieve plate 3, the plastic sieve plate 3 is arranged on the upper part of the thin film layer, a plate to be formed is formed between the flat plate tool and the flat mold 6, the metal framework plate is formed by a plurality of detachable unit blocks 7, a plurality of conical holes 8 are formed in the unit blocks 7, the conical holes 8 are uniformly distributed on the unit blocks 7, a plurality of through holes 13 which are uniformly distributed are also formed in the plastic sieve plate 3, and the thin film layer 4 is made of a full-permeability material filled with resin. According to the plate-shaped composite material forming flat plate tool, the size of the metal framework plate can be conveniently adjusted according to the area of a plate to be formed through the arrangement of the metal framework plate which is detachably assembled, the application range is wide, the uniformly distributed taper holes can uniformly disperse the surface pressure of a product, and the tool has a primary uniform flow guide function on resin fluid poured into the forming tool; the plastic plate has certain flexibility and extensibility, and can be well attached to the metal framework plate, and a large number of vertical through holes on the plastic sieve plate are used for fine uniform distribution of the injected resin fluid; the setting of the full-transparent film material can remove the forming demolding traces caused by the permeation holes, and the surface flatness of the formed plate is fully ensured.
The metal unit block 7 is arranged to be of a square-shaped structure, the taper holes 8 penetrate through the upper surface and the lower surface of the unit block 7, the side face of the unit block 7 is provided with clamping grooves and buckles, the clamping grooves on the side face of the unit block 7 are detachably connected with the buckles on the side face of the adjacent unit block, and assembly among different unit blocks 7 is achieved. The size of the metal unit block 7 is selected according to specific use working conditions, the material of the unit block 7 can be made of stainless steel with low density and certain strength, and a hollow structure material can be prepared if necessary.
Furthermore, four sides of the unit blocks 7 are all set to be planes, the flatness is controlled within 0.1mm, the metal unit blocks are conveniently and accurately butted for use, and the overlarge gap between two adjacent unit blocks after butt joint is avoided.
Specifically, connecting structures with different structures are arranged on four side faces, wherein a T-shaped clamping groove 9 is arranged on a first side face, an assembly pin shaft 10 is arranged on a second side face, a T-shaped buckle 11 is arranged on a third side face, a circular pin hole 12 is arranged on a fourth side face, the first side face, the second side face, the third side face and the fourth side face are arranged anticlockwise around the unit blocks 7, namely the T-shaped clamping groove 9 and the T-shaped buckle 11 are respectively arranged on two opposite side faces, the assembly pin shaft 10 and the circular pin hole 12 are respectively arranged on the two opposite side faces, so that the adjacent unit blocks can be conveniently and tightly matched and connected, a plurality of follow-up unit blocks pass through the clamping groove-buckle, and the pin shaft-pin hole are finally spliced into the metal skeleton plate with the required size.
Preferably, the catch 11 is slidable within the catch 9. T-shaped buckle 11 includes connecting portion 11a and anticreep portion 11b, and connecting portion 11a is connected with the third side, and anticreep portion 11b sets up the one end that keeps away from the third side at connecting portion 11a, and the thickness of anticreep portion 11b is greater than connecting portion 11a for connecting portion 11a and anticreep portion 11b form T type structure. Correspondingly, the T-shaped card slot 9 comprises a wide slot portion 9a and a narrow slot portion 9b, the wide slot portion 9a is arranged at a side close to the fourth side surface, the narrow slot portion 9b is arranged at a side close to the second side surface, and the height of the wide slot portion 9a is greater than that of the narrow slot portion 9b, so that the wide slot portion 9a and the narrow slot portion 9b form a T-shaped slot structure. When the T-clip 11 of one unit block is fitted into the T-slot 9 of an adjacent unit block, the coming-off preventing portion 11b first enters the inside of the T-slot 9 through the wide slot portion 9a, and then the unit block 7 corresponding to the T-clip 11 is moved so that the connecting portion 11a of the T-clip 11 enters the narrow slot portion 9b, and the coming-off preventing portion 11b constitutes a stopper for coming off preventing two unit blocks from being separated.
In the embodiment, the plastic sieve plate 3 is adhered to the lower surface of the metal framework plate 2 by strong glue or other adhesive materials, and the thin film layer 4 is also adhered to the lower surface of the plastic sieve plate 3 by the adhesive materials, so that the whole forming tool is assembled. The control of 13 aperture sizes of through-hole on the plastic sieve 3 is at 3 ~ 5mm, and the hole site interval sets up to 30 ~ 50mm, and the thickness of plastic sieve 3 sets up to 1 ~ 5mm, can effectively provide certain intensity, makes things convenient for the quick clearance of rich resin in the post drawing of patterns back hole site in the later stage again.
The thin film layer 4 is arranged to be flexible mesh cloth, the flexible mesh cloth can be formed by nylon or Teflon fibers through warp and weft weaving, the fiber gaps are set to be less than or equal to 0.1mm, normal passing of filling resin is guaranteed, and forming demolding traces caused by permeation holes can be removed. The film material is formed by bonding the non-setting adhesive with the plastic sieve plate, the non-setting adhesive can be sprayed with aerosol, the film material needs to have certain strength, the residual hole site trace of the permeation hole of the upper plastic sieve plate can be effectively eliminated, the surface of the film material can be coated with the demolding wax material and different mesh fabrics can be selected according to the use purpose of the product, and the surface roughness of the product after demolding can be controlled.
The plate-shaped composite material forming flat plate tool can assemble a forming flat plate according to the size of a target product, is placed above the prefabricated part, is matched with a flat mold, adopts a vacuum infusion forming process, and can accurately prepare a composite material product with good two-sided flatness.
The embodiment of the invention also provides a two-plane forming process for the plate-shaped composite material, which comprises the following steps:
s1, splicing the metal framework plate 2 according to the area of the material to be formed, and uniformly smearing the metal plate integrally once after splicing, especially in the splicing area of the metal template, by using a chemical inert material such as demolding wax, so that the metal plate can be conveniently demolded and cleaned of rich resin at the later stage;
s2, smoothly adhering the plastic sieve plate 3 to the lower surface of the metal framework plate 2 by using a strong adhesive with the thickness less than 0.1mm, such as a glass fiber adhesive tape, wherein the holes 13 of the plastic sieve plate are used as resin flow guide channels;
s3, after the plastic sieve plate 3 is fixed, the flexible mesh cloth 4 is flatly adhered to the lower surface of the plastic sieve plate 3 by aerosol spray glue, and the assembly of the whole flat plate is completed;
s4, finishing pretreatment of the fabric laying layer 5 on the plane mould 6 according to the design requirement of the plate to be formed, placing the assembled flat plate tool above the fabric laying layer 5, fully covering the flat plate tool with a vacuum belt film 1, finishing the pouring and curing operation of the large part by adopting a vacuum pouring process, and finishing the forming of the large composite material double-plane plate product; wherein the textile layer 5 can be provided in a plurality of layers as required.
S5, after the product is demoulded, determining whether the reticulate cloth is torn off or not according to the target requirement of the product, separating the plastic sieve plate 3 from the plane of the metal framework 2, wherein the upper part of the metal framework plate is provided with a large hole 8 which is conical, the surface of the metal framework plate is coated with demoulding wax, and the surface of the metal framework plate can be quickly and conveniently cleaned by rich resin in a manual mode, so that the metal unit block 7 can be reused; for the plastic sieve plate 3, the hole sites 13 on the surface are densely distributed and smaller, but the material of the body of the plastic sieve plate 3 is a chemical inert material, has no chemical bonding force with resin, and can be repeatedly rolled manually or mechanically to clean and remove the resin rich in the sieve plate holes 13 for reuse.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the technical solutions described in the foregoing embodiments, or some technical features may be equivalently replaced, for example, the metal skeleton plate in the present invention is a flat surface, but the metal plate unit blocks may be processed into curved surfaces according to different usage scenarios, and the invention is also applicable to this patent. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a dull and stereotyped frock of platelike combined material shaping, its characterized in that includes metal skeleton board (2), plastic sieve (3) and thin layer (4), metal skeleton board (2) set up in the upper portion of plastic sieve (3), plastic sieve (3) set up in the upper portion of thin layer (4), metal skeleton board (2) comprise detachable polylith unit piece (7), be provided with a plurality of taper holes (8) on unit piece (7), taper hole (8) evenly distributed be in on unit piece (7), also set up a plurality of evenly distributed's through-hole (13) on plastic sieve (3), thin layer (4) set up to the full permeability material of filling resin.
2. The plate-shaped composite material molding flat plate tool according to claim 1, characterized in that the unit blocks (7) are arranged in a square block-shaped structure, the taper holes (8) penetrate through the upper and lower surfaces of the unit blocks (7), the side surfaces of the unit blocks (7) are provided with clamping grooves and buckles, and the clamping grooves on the side surfaces of the unit blocks (7) are detachably connected with the buckles on the side surfaces of the adjacent unit blocks.
3. The plate-shaped composite material forming flat plate tool according to claim 2, characterized in that four side surfaces of the unit block (7) are all set to be flat, and the flatness is controlled within 0.1 mm.
4. The plate-shaped composite material forming flat plate tool according to claim 3, wherein connecting structures with different structures are arranged on four side surfaces, a T-shaped clamping groove (9) is arranged on a first side surface, an assembling pin shaft (10) is arranged on a second side surface, a T-shaped buckle (11) is arranged on a third side surface, a round pin hole (12) is arranged on a fourth side surface, and the first side surface, the second side surface, the third side surface and the fourth side surface are arranged along the periphery of the unit block (7) in an anticlockwise mode.
5. The plate-shaped composite material forming flat plate tool according to claim 4, characterized in that the T-shaped buckle (11) can slide in the T-shaped clamping groove (9).
6. The plate-shaped composite material forming flat plate tool according to claim 4, wherein the T-shaped buckle (11) comprises a connecting portion (11a) and a retaining portion (11b), the connecting portion (11a) is connected with the third side face, the retaining portion (11b) is arranged at one end, far away from the third side face, of the connecting portion (11a), the thickness of the retaining portion (11b) is larger than that of the connecting portion (11a), the T-shaped clamping groove (9) comprises a wide groove portion (9a) and a narrow groove portion (9b), the wide groove portion (9a) is arranged at one side close to the fourth side face, the narrow groove portion (9b) is arranged at one side close to the second side face, and the height of the wide groove portion (9a) is larger than that of the narrow groove portion (9 b).
7. The plate-shaped composite material forming flat plate tool according to claim 1, wherein the taper hole (8) is a tapered hole with the size gradually reduced from the upper surface to the lower surface, and the size of the tapered hole is controlled to be 20-100 mm.
8. The plate-shaped composite material forming flat plate tool according to claim 1, wherein the aperture size of the through holes (13) is controlled to be 3-5 mm, the hole site interval is set to be 30-50 mm, and the thickness of the plastic sieve plate (3) is set to be 1-5 mm.
9. The plate-shaped composite material forming flat plate tool according to claim 1, wherein the film layer (4) is arranged to be flexible mesh cloth, the flexible mesh cloth is formed by nylon or Teflon fiber in a warp-weft weaving mode, and the fiber gap is set to be less than or equal to 0.1 mm.
10. A forming process of a plate-shaped composite material is characterized by comprising the following steps:
s1, splicing the metal framework plates according to the area of the material to be formed, and uniformly smearing the metal plates integrally by using a chemical inert material such as demolding wax after splicing;
s2, flatly bonding the plastic sieve plate to the lower surface of the metal framework plate by using a strong glue with the thickness of less than 0.1mm, such as a glass fiber adhesive tape, wherein the through hole of the plastic sieve plate is used as a resin flow guide channel;
s3, after the plastic sieve plate is fixed, flatly adhering the flexible reticulated cloth to the lower surface of the plastic sieve plate by adopting aerosol spray glue to complete the assembly of the whole flat plate;
s4, finishing fabric layer pretreatment on a planar mold according to the design requirements of the plate to be molded, placing the assembled flat plate tool above the fabric layer, fully covering the flat plate tool with a vacuum belt film, and finishing the injection curing operation of the large part by adopting a vacuum injection process to finish the molding of the large composite material double-planar plate product;
and S5, after the product is demoulded, determining whether the reticulate cloth is torn off or not according to the target requirement of the product.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| EP4345188A1 (en) * | 2022-09-30 | 2024-04-03 | RTX Corporation | Ceramic matrix composite tooling for chemical vapor infiltration process |
| US11993548B2 (en) | 2022-09-30 | 2024-05-28 | Rtx Corporation | Minimization of chemical vapor infiltration tooling hole length through windows |
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| CN115008791B (en) | 2024-06-21 |
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