CN114131961A - HP-RTM sample piece mold platform and mold assembly - Google Patents
HP-RTM sample piece mold platform and mold assembly Download PDFInfo
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- CN114131961A CN114131961A CN202111434518.2A CN202111434518A CN114131961A CN 114131961 A CN114131961 A CN 114131961A CN 202111434518 A CN202111434518 A CN 202111434518A CN 114131961 A CN114131961 A CN 114131961A
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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
- 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
- B29C33/10—Moulds or cores; Details thereof or accessories therefor with incorporated venting means
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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
- B29C70/345—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
- 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
- B29C70/545—Perforating, cutting or machining during or after moulding
Abstract
The invention relates to the technical field of HP-RTM (high pressure-resin transfer molding) process product molding, and provides an HP-RTM sample piece mold platform which comprises an upper platform and a lower platform, wherein the upper platform comprises an upper platform bottom plate and an upper platform heating plate arranged on the upper platform bottom plate, the upper platform heating plate is provided with an injection mounting through hole, an upper platform vacuumizing through hole and an upper soft mold fixing hole, the lower platform comprises a lower platform bottom plate and a lower platform heating plate arranged on the lower platform bottom plate, the lower platform heating plate is provided with a lower soft mold fixing hole, the upper platform heating plate is connected with an upper platform heat supply assembly, and the lower platform heating plate is connected with a lower platform heat supply assembly. The preparation of the preformed piece through the sample piece mold saves a preforming mold in a mass production scheme, better accords with the development of sample pieces with small quantity, and reduces the development cost of the sample piece mold.
Description
Technical Field
The invention relates to the technical field of HP-RTM process product molding, in particular to an HP-RTM sample piece mold platform and a mold assembly.
Background
At present, the HP-RTM process has high requirements on the structure of a mold, the development period is long, and the HP-RTM process is mostly used for mass production of molds. In the actual product development process, a PCM process is mostly adopted for sample piece manufacturing and assembly verification, and the mass production is carried out by converting the PCM process into the HP-RTM process, so that the development period is longer. The raw materials used in the HP-RTM and PCM processes are both continuous fibers and epoxy resins. HP-RTM adopts fiber dry cloth preforming and high-pressure resin is injected into a mold cavity for molding, and the material used by PCM is fiber prepreg (the material is pre-impregnated with resin). The PCM process is performed by manually paving and pasting, the materials are not well jointed with a mould, air is easily trapped between material layers, and the porosity of a formed product is large and more bubbles exist. In addition, most of the sample pieces developed by adopting the PCM process are aluminum dies, and the aluminum dies are difficult to repair in subsequent design change and cause poor appearance. Although the HP-RTM process discharges gas in the die cavity through the die vacuum pumping system in the forming process, the formed product has good compactness and does not have defects of pinhole bubbles and the like. However, the PCM process is adopted in the early stage process, which results in great differences between the sample piece and the mass-produced piece.
Disclosure of Invention
In order to solve the technical problems, the invention provides an HP-RTM sample piece mold platform and a mold assembly, the development period is short, the cost is low, and the sizes, materials and other properties of the produced sample piece and mass production pieces are consistent. Compared with the PCM process product, the method has the advantages of high compactness, no defects of pinhole bubbles and the like, less manual investment and simple working procedures.
In order to achieve the purpose, the technical scheme of the invention comprises the following steps:
the utility model provides a HP-RTM appearance piece mould platform, includes upper mounting plate and lower platform, the upper mounting plate include the upper mounting plate bottom plate with install in upper mounting plate hot plate on the upper mounting plate bottom plate, injection installation via hole, upper mounting plate evacuation via hole and last soft mould fixed orifices have been seted up to the upper mounting plate hot plate, the lower platform include the lower mounting plate bottom plate with install in lower platform hot plate on the platform bottom plate, the lower platform hot plate is equipped with down the soft mould fixed orifices, upper mounting plate hot plate connection upper mounting plate heat supply subassembly, platform heat supply subassembly down is connected to the lower platform hot plate.
As a preferable scheme of the present invention, the lower platform heating plate is provided with two soft mold centering lines which are perpendicular to each other and pass through a central point of a surface of the lower platform heating plate, the lower soft mold fixing holes are provided with a plurality of soft mold centering lines, the soft mold centering lines divide the lower soft mold fixing holes into four regions, the lower soft mold fixing holes in each region are arranged in an array form and are axisymmetric along the soft mold centering line, and the lower soft mold fixing holes and the upper soft mold fixing holes correspond to each other one by one.
As the preferable scheme of the invention, the upper soft mold fixing hole and the lower soft mold fixing hole are both threaded locking holes.
As a preferable scheme of the invention, one surface of the upper platform heating plate close to the upper platform bottom plate is provided with an upper platform heat insulation piece, and the upper platform heat insulation piece is connected with the upper platform bottom plate through an upper mould foot; and a hydraulic oil circuit manifold block is arranged on the outer side of the upper mold foot, and an air inlet and an air outlet are arranged on the hydraulic oil circuit manifold block.
As a preferable scheme of the invention, a plurality of vacuumizing through holes are formed in the upper platform, a plurality of hydraulic oil circuit integrated blocks are arranged, and a plurality of air inlets and air outlets which are equal in number are formed in the hydraulic oil circuit integrated blocks.
As a preferred aspect of the present invention, the upper stage vacuuming via holes are arranged on a diagonal line of the upper stage.
As a preferred scheme of the present invention, the upper platform heat supply assembly and the lower platform heat supply assembly respectively include a platform heat conduction oil pipe and a heat conduction oil pipe integrated block, the heat conduction oil pipe integrated block is provided with an oil inlet and an oil outlet, heating oil passages are respectively arranged in the upper platform heating plate and the lower platform heating plate, and the oil inlet and the oil outlet are respectively communicated with the heating oil passages through the platform heat conduction oil pipe.
As the preferable scheme of the invention, the bottom plate of the upper platform is provided with an injection gun mounting groove.
The other aspect of the technical scheme of the invention is as follows: the utility model provides a HP-RTM appearance mould subassembly, contains foretell HP-RTM appearance mould platform, goes up soft mould and soft mould down, it corresponds with the upper mounting plate to go up soft mould, soft mould and lower platform correspond down, go up soft mould with soft mould cooperation down, it includes mold core, injection mounting hole, goes up soft mould heat insulating board, goes up soft mould evacuation module, guide pillar and square guide pillar to go up soft mould, soft mould includes soft mould heat insulating board, sealing strip, flat block down, central point puts down and opens and establishes down the model chamber on the soft mould down, and keyway and guide pillar hole have been seted up to the edge all around, the guide pillar with guide pillar hole sliding fit connects, square guide pillar with keyway fit connects.
As a preferable scheme of the present invention, a groove is disposed at a center of one side of the upper soft mold close to the lower soft mold, an injection hole is disposed at a center of the groove, a plurality of flow channels are disposed at outer sides of the groove, and one end of each flow channel is communicated with the groove.
The invention achieves the following beneficial effects:
1. the upper soft mold, the lower soft mold and the upper soft mold vacuumizing module are in modular design, can be integrally and locally disassembled and assembled, are convenient and quick, and are suitable for installing a plurality of sets of upper soft molds and lower soft molds, so that the production cost is saved, and the economic benefit is improved.
2. In the forming process, the HP-RTM process discharges gas in the die cavity through a die vacuumizing system, and the formed product has good compactness and does not have defects of pinhole, bubble and the like.
3. The pre-forming die in a mass production scheme is omitted through the manufacturing of the pre-forming piece, the development of the sample piece with small quantity is more met, and the development cost of the sample piece die is reduced.
4. Compared with the PCM process, the cutting of the prepreg is not needed, the production cost and the processing period are reduced, meanwhile, the trimming of the produced product is simple compared with the PCM process, and the appearance of the produced product is more beautiful and smooth.
5. Using the functional integrated blocks on the platform: the heat conduction oil pipe integrated block and the hydraulic oil circuit integrated block simplify the overall layout design, improve the uniformity of the layout of related pipelines, reduce the difficulty of manual operation and improve the stability of production.
Drawings
FIG. 1 is a schematic perspective view of an upper mold platform of an HP-RTM sample mold platform according to the present application;
FIG. 2 is a schematic perspective view of an upper mold platform of an HP-RTM sample mold platform according to the present application;
FIG. 3 is a schematic perspective view of a lower mold platform of an HP-RTM sample mold platform according to the present application;
FIG. 4 is a schematic perspective view of the overall structure of an HP-RTM sample mold assembly of the present application;
FIG. 5 is a schematic perspective view of an upper soft mold of a HP-RTM sample mold assembly of the present application;
FIG. 6 is a schematic bottom view of an HP-RTM sample mold assembly of the present application;
FIG. 7 is a schematic view of a lower soft mold perspective of an HP-RTM sample mold assembly of the present application;
fig. 8 is a flow chart of the product manufacturing process of the present application.
In the figure, 1, an upper platform; 110. an upper platform floor; 111. an upper platform heating plate; 112. vacuumizing the upper platform to pass through the hole; 113. injecting a mounting via hole; 114. fixing holes of the upper soft mold; 115. an upper platform insulation; 116. mounting a mold leg; 117. a hydraulic oil circuit manifold block; 118. an injection gun mounting groove; 119. an air inlet; 120. an air outlet; 2. a lower platform; 21. a lower platform floor; 22. a lower platform heating plate; 23. a lower soft mold fixing hole; 24. a lower platform insulation; 25. soft mold centering line; 26. a lower mold leg; 3. soft mold feeding; 31. molding a mold core; 32. a soft mould heat insulation plate is arranged; 33. an upper soft mold vacuumizing module; 34. a guide post; 35. a square guide post; 36. an injection mounting hole; 37. a groove; 38. a flow channel; 39. an injection hole; 4. a soft mold is arranged; 41. a lower soft mold heat insulation plate; 42. a guide post hole; 43. a sealing strip; 44. a flat collision block; 45. a lower mold cavity; 46. a keyway; 5. an injection gun; 6. a platform heat conduction oil pipe; 7. the heat conduction oil pipe integrated block; 8. an oil inlet; 9. and an oil outlet.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, 2, 3 and 4, a HP-RTM sample mold platform, includes upper mounting plate 1 and lower platform 2, upper mounting plate 1 includes upper mounting plate 110 and install in upper mounting plate heating plate 111 on upper mounting plate 110, injection installation via hole 113, upper mounting plate evacuation via hole 112 and last soft mould fixed orifices 114 have been seted up to upper mounting plate heating plate 111, lower platform 2 includes lower mounting plate 21 and install in lower platform heating plate 22 on lower mounting plate 21, lower platform heating plate 22 is equipped with soft mould fixed orifices 23 down, upper mounting plate 111 is connected for the upper mounting plate heating plate 111 upper mounting plate's heat supply subassembly, lower platform heating plate 22 is connected for the lower platform heat supply subassembly of lower platform heating plate 22 heat supply. During assembly, the upper soft mold 3 or the lower soft mold 4 is correspondingly placed on the upper platform heating plate 111 or the lower platform heating plate 22, and the upper soft mold fixing hole 114 and the lower soft mold fixing hole 23 are respectively connected by screws or bolts, so that the upper soft mold 4 and the lower soft mold 4 are respectively fixedly mounted on the upper platform 2 and the lower platform 2. After the upper and lower soft molds are installed, the upper platform heating plate 111 heats the upper soft mold 3, and the lower platform heating plate 22 heats the upper soft mold 3; and (2) putting the laid fabric into a mold cavity consisting of an upper soft mold and a lower soft mold which are heated for mold pressing preforming, taking out the fabric for finishing into a preformed piece, putting the preformed piece into the heated mold cavity again to complete the film combination of the upper soft mold and the lower soft mold, vacuumizing the mold cavity by vacuumizing equipment through a vacuumizing through hole 112 on an upper platform 1 until the working pressure is reached, closing the vacuumizing equipment, injecting high-pressure resin into the mold cavity by the injection equipment through an injection installation through hole 113 of the upper platform 1, maintaining the pressure for a period of time, finishing the manufacture of the HP-RTM sample piece on the HP-RTM sample piece mold platform, and entering the next process. In the forming process, the HP-RTM process discharges gas in the die cavity through a die vacuumizing system, and the formed product has good compactness and does not have defects of pinhole, bubble and the like. In the whole production process of the HP-RTM sample piece, a preforming mold in a mass production scheme is omitted, and the sample piece mold is adopted for pressing the preformed piece. The functions of a formal die are realized by combining an HP-RTM sample die platform and a special quick-detachable simple HP-RTM sample die, and meanwhile, the complete development of the sample is realized by matching with a new forming process. The upper soft mold and the lower soft mold of the platform are convenient and fast to disassemble and assemble, can be configured with various upper soft molds and lower soft molds, and are short in development period and low in development cost.
Preferably, the lower platform heating plate 22 is provided with two mutually perpendicular soft mold centering lines 25 passing through the central point of the surface of the lower platform heating plate 22, the lower soft mold fixing holes 23 are provided with a plurality of soft mold centering lines 25, the lower soft mold fixing holes 23 are divided into four areas by the soft mold centering lines 25, the lower soft mold fixing holes 23 in each area are arranged in an array manner, the lower soft mold fixing holes 23 are axially symmetrical along the soft mold centering lines 25, and the lower soft mold fixing holes 23 correspond to the upper soft mold fixing holes 114 one by one. As shown in fig. 2 and fig. 3, the upper soft mold fixing holes 114 and the lower soft mold fixing holes 23 are both screw locking holes, the upper soft mold fixing holes 114 and the lower soft mold fixing holes 23 are uniformly arranged and are both M24 screw mounting holes, and the longitudinal distance between two adjacent upper soft mold fixing holes 114 or two adjacent lower soft mold fixing holes 23 is 100mm, and the transverse distance is 200 mm. The upper soft mold and the lower soft mold are integrally hoisted and placed on the platform and locked on the upper platform and the lower platform through M24 screws. The installation locking pair of the die with any size of 2600mm and 2000mm below width can be realized. The lower platform heating plate 22 is engraved with soft mold centering lines 25, and because the lower soft mold fixing holes 23 correspond to the upper soft mold fixing holes 114 one by one, the upper and lower soft molds are ensured to be installed at the central position by aligning the soft mold centering lines 25 by visual observation, and the mold pressing unbalance loading caused by the offset installation can be avoided.
As shown in fig. 2, an upper platform heat insulating member 115 is installed on one surface of the upper platform heating plate 111 close to the upper platform bottom plate 110, and the upper platform heat insulating member 115 is connected to the upper platform bottom plate 110 through an upper mold leg 116; and a hydraulic oil circuit manifold block 117 is installed on the outer side of the upper mold foot 116, and an air inlet 119 and an air outlet 120 are arranged on the hydraulic oil circuit manifold block 117.
According to the requirements of a product production process, the hydraulic layout design is simplified, and the pipeline layout is neat, a plurality of hydraulic oil circuit integrated blocks 117 are arranged, a plurality of air inlets 119 and air outlets 120 are arranged on each hydraulic oil circuit integrated block 117, and a plurality of upper platform vacuumizing via holes 112 are arranged. Each upper platform vacuumizing via hole 112 is used for independently accommodating a vacuumizing device for vacuumizing the mold cavity, and the vacuumizing devices are arranged through the upper platform vacuumizing via holes 112 at different positions, so that the requirements of vacuumizing and air blowing functions of upper and lower soft mold dies with different sizes and shapes can be met. Preferably, the number of the air inlets 119 and the number of the air outlets 120 are equal, and a pair of the air inlets 119 and the air outlets 120 are respectively connected with an inlet and an outlet of a vacuum pumping device through hydraulic oil pipes (not shown in the figure) so as to satisfy the vacuum pumping of the mold cavity from the hydraulic oil circuit manifold block 117. More preferably, the upper platform vacuuming through holes 112 are arranged on the diagonal line of the upper platform 1, the layout is more reasonable, and meanwhile, the vacuuming through holes 112 do not overlap with the upper soft mold fixing holes 114, and the assembly and use with the upper soft mold are more convenient. When the vacuum pumping device is a vacuum pumping cylinder module, the upper platform vacuum pumping through hole 112 can be a square hole. For example, as shown in fig. 2, the upper platform vacuumizing via holes 112 are uniformly arranged in an X-shape, the number of the upper platform vacuumizing via holes is 12, the number of the hydraulic oil circuit integrated blocks 117 is 3, the hydraulic oil circuit integrated blocks are respectively arranged on the upper mold feet 116 on three side surfaces of the upper platform 1, and an inlet and an outlet on each hydraulic oil circuit integrated block 117 are respectively two, so that a hydraulic oil pipe can be conveniently inserted between the upper mold feet 116 and connected with an inlet and an outlet of the vacuumizing oil cylinder module, the hydraulic oil pipe is prevented from being disordered, and the production safety is improved.
Because the relevant structure of the upper platform is similar to that of the lower platform, taking the schematic drawing of the three-dimensional structure of the lower platform in fig. 3 as an example, the upper platform heat supply assembly and the lower platform heat supply assembly respectively comprise a platform heat conduction oil pipe 6 and a heat conduction oil pipe integrated block 7, the heat conduction oil pipe integrated block 7 is provided with an oil inlet 8 and an oil outlet 9, heating oil paths are respectively arranged in the upper platform heating plate 111 and the lower platform heating plate 22, and the oil inlet 8 and the oil outlet 9 are respectively communicated with the heating oil paths through the platform heat conduction oil pipe 6. The heating oil path is designed in the upper and lower platform heating plates, so that the die is simplified, and the heat conduction of the upper and lower heating plate surfaces to the upper and lower soft die is increased.
The upper platform base plate 110 is provided with an injection gun mounting groove 118. Illustratively, the injection apparatus employs an injection gun, and as shown in fig. 1, the upper platform 1 is centrally provided with a U-shaped gun mounting groove 118, in which the injection gun is mounted, and the injection gun passes through the injection mounting through hole 113 to inject resin into the mold cavities of the upper and lower soft molds. The injection gun is stably arranged in the injection gun mounting groove 118, so that the injection gun can be prevented from sliding in the injection process, and the stability of the injection process is improved.
As shown in fig. 5-7, an HP-RTM sample mold assembly comprises the above HP-RTM sample mold platform, an upper soft mold 3 and a lower soft mold 4, the upper soft mold 3 corresponds to the upper platform 1, the lower soft mold 4 corresponds to the lower platform 2, the upper soft mold 3 cooperates with the lower soft mold 4, the upper soft mold 3 comprises an upper mold core 31, an injection mounting hole 36, an upper soft mold heat insulation plate 32, an upper soft mold vacuum module 33, a guide post 34 and a square guide post 35, the upper soft mold vacuum module 33 is correspondingly sleeved in a vacuum through hole 112 on the upper platform 1, the lower soft mold 4 comprises a lower soft mold heat insulation plate 41, a sealing strip 43 and a strike block 44, the lower soft mold 4 is provided with a lower cavity 45 at the center, a keyway 46 and a guide post hole 42 at the peripheral edge, the upper soft mold heat insulation plate 32 and the lower soft mold heat insulation plate 41 are respectively mounted around the outer sides of the upper soft mold 3 and the lower soft mold 4, the guide post 34 is connected with the guide post hole 42 in a sliding fit manner, and the square guide post 35 is connected with the key groove 46 in a matching manner. In the mould pressing production process, in the front mould closing stage, the guide post 34 firstly contacts the guide post hole 42 to guide a mould pressing descending path to play a pre-guiding role, and in the rear mould closing stage, the square guide post 35 plays a more precise guiding role, because the guiding clearance of the guide post 34 is larger than that of the guide post, the square guide post 35 is locked with the upper soft mould 3 through a screw, and the lower soft mould is provided with a key groove and a mounting key, so that the screw can be prevented from being influenced by shearing force. The flat collision block 44 is a contact part when the upper soft die and the lower soft die are in a closed state, the flat collision block 44 is arranged to protect the die, after the die is closed, a feeler gauge can be inserted between the two flat collision blocks 44 to confirm whether the die is in a closed state, and a gasket is arranged below the flat collision block 44 to adjust the thickness of a product.
A groove 37 is formed in the center of one side, close to the lower soft mold 4, of the upper soft mold 3, an injection hole 39 is formed in the center of the groove 37, a plurality of flow channels 38 are formed in the outer side of the groove 37, and one end of each flow channel 38 is communicated with the groove 37. During injection, the resin flows more rapidly along the direction that the grooves 37 extend outwards from the injection holes 39 to the flow channels 38, so that the resin is rapidly and uniformly filled into the upper soft mold cavity and the lower soft mold cavity, and the product molding quality and the production efficiency are improved. More preferably, but not by way of limitation, as shown in FIG. 6, the flow passages 38 are generally radial.
Compared with the formal mold, the upper and lower soft molds have no upper and lower mold feet, bottom plate, heating system and thimble ejection system, the upper and lower molds of the sample mold are respectively arranged on the upper and lower platforms, and the upper and lower soft molds are heated and insulated by heat conduction of the heating plates of the upper and lower platforms. The upper soft mold and the lower soft mold and the upper soft mold vacuumizing module are in modular design, so that the whole and local disassembly and assembly can be realized, and the convenience and the rapidness are realized.
As shown in fig. 8, the working principle of the production process of the present invention is as follows: cutting the fabric through a cutting bed in advance and sequentially laying the fabric; placing the laid fabric into a mold cavity of a heated upper soft mold and a heated lower soft mold for mold pressing and preforming; trimming the edges of the pre-formed fabric and spraying glue to spread additional reinforcement plies to form a pre-formed piece; putting the preformed piece into the mold cavity of the heated upper and lower soft molds again for mold closing, vacuumizing the mold cavity to a certain pressure, injecting resin and maintaining the pressure for a period of time; taking out the product after pressure maintaining molding and cooling; then, carrying out milling and hole opening treatment on the qualified cooling piece through laser cutting; then cleaning the surface of the product after opening holes; then inspecting the product; and finally, packaging the qualified products and warehousing.
The present invention is described in detail in order to make those skilled in the art understand the content and practice the invention, and the invention is not limited to the above embodiments, and all equivalent changes or modifications made according to the spirit of the invention should be covered by the scope of the invention.
Claims (10)
1. The utility model provides a HP-RTM appearance piece mould platform which characterized in that: including upper mounting plate (1) and lower platform (2), upper mounting plate (1) include upper mounting plate bottom plate (110) and install in upper mounting plate (111) on upper mounting plate bottom plate (110), injection installation via hole (113), upper mounting plate evacuation via hole (112) and last soft mould fixed orifices (114) have been seted up in upper mounting plate (111), lower platform (2) include lower mounting plate bottom plate (21) and install in lower platform hot plate (22) on lower mounting plate bottom plate (21), lower platform hot plate (22) are equipped with down soft mould fixed orifices (23), upper mounting plate (111) connect upper mounting plate subassembly, platform hot plate (22) are connected down and are put platform heat supply subassembly.
2. An HP-RTM sample mold platform according to claim 1, wherein: lower platform hot plate (22) is equipped with two mutually perpendicular and passes through soft mould centering line (25) of lower platform hot plate (22) surface central point, soft mould fixed orifices (23) are equipped with a plurality of down, soft mould centering line (25) will soft mould fixed orifices (23) separate into four regions down, in every region down soft mould fixed orifices (23) are array arrangement just soft mould fixed orifices (23) are followed soft mould centering line (25) axial symmetry down, soft mould fixed orifices (23) with go up soft mould fixed orifices (114) one-to-one down.
3. An HP-RTM sample mold platform according to claim 1, wherein: the upper soft die fixing hole (114) and the lower soft die fixing hole (23) are both threaded locking holes.
4. An HP-RTM sample mold platform according to claim 1, wherein: an upper platform heat insulation piece (115) is arranged on one surface, close to the upper platform bottom plate (110), of the upper platform heating plate (111), and the upper platform heat insulation piece (115) is connected with the upper platform bottom plate (110) through an upper mold foot (116); and a hydraulic oil circuit manifold block (117) is arranged on the outer side of the upper mold foot (116), and an air inlet (119) and an air outlet (120) are arranged on the hydraulic oil circuit manifold block (117).
5. An HP-RTM sample mold platform according to claim 4, wherein: the upper platform vacuumizing via holes (112) are provided with a plurality of through holes, the hydraulic oil circuit manifold block (117) is provided with a plurality of through holes, and the hydraulic oil circuit manifold block (117) is provided with a plurality of air inlets (119) and air outlets (120) which are equal in number.
6. An HP-RTM sample mold platform according to claim 1 or 5, wherein: the upper platform vacuumizing through holes (112) are arranged on the diagonal line of the upper platform (1).
7. An HP-RTM sample mold platform according to claim 1, wherein: the upper platform heat supply assembly and the lower platform heat supply assembly respectively comprise a platform heat conduction oil pipe (6) and a heat conduction oil pipe integrated block (7), the heat conduction oil pipe integrated block (7) is provided with an oil inlet (8) and an oil outlet (9), a heating oil way is respectively arranged in the upper platform heating plate (111) and the lower platform heating plate (22), and the oil inlet (8) and the oil outlet (9) are respectively communicated with the heating oil way through the platform heat conduction oil pipe (6).
8. An HP-RTM sample mold platform according to claim 1, wherein: an injection gun mounting groove (118) is formed in the upper platform bottom plate (110).
9. An HP-RTM sample piece mold assembly, characterized in that: comprising the HP-RTM sample mold platform according to any one of claims 1-8, an upper soft mold (3) and a lower soft mold (4), wherein the upper soft mold (3) corresponds to the upper platform (1), the lower soft mold (4) corresponds to the lower platform (2), the upper soft mold (3) is matched with the lower soft mold (4), the upper soft mold (3) comprises an upper mold core (31), an injection mounting hole (36), an upper soft mold heat insulation plate (32), an upper soft mold vacuum pumping module (33), a guide post (34) and a square guide post (35), the lower soft mold (4) comprises a lower soft mold heat insulation plate (41), a sealing strip (43) and a flat collision block (44), a lower cavity (45) is arranged at the upper center position of the lower soft mold (4), a key groove (46) and a guide post hole (42) are arranged at the peripheral edge, and the guide post (34) is connected with the guide post hole (42) in a sliding fit manner, the square guide post (35) is matched and connected with the key groove (46).
10. An HP-RTM sample mold assembly according to claim 9, wherein: a groove (37) is formed in the center of one side, close to the lower soft mold (4), of the upper soft mold (3), an injection hole (39) is formed in the center of the groove (37), a plurality of flow channels (38) are formed in the outer side of the groove (37), and one end of each flow channel (38) is communicated with the groove (37).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111434518.2A CN114131961A (en) | 2021-11-29 | 2021-11-29 | HP-RTM sample piece mold platform and mold assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111434518.2A CN114131961A (en) | 2021-11-29 | 2021-11-29 | HP-RTM sample piece mold platform and mold assembly |
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| CN114131961A true CN114131961A (en) | 2022-03-04 |
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| CN202111434518.2A Pending CN114131961A (en) | 2021-11-29 | 2021-11-29 | HP-RTM sample piece mold platform and mold assembly |
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|---|---|---|---|---|
| WO2005077632A1 (en) * | 2004-02-17 | 2005-08-25 | Toray Industries, Inc. | Rtm molding method and device |
| EP2719520A1 (en) * | 2012-10-10 | 2014-04-16 | Compose | Mould, connector especially adapted for use in such a mould, moulding facility and method using such a mould |
| CN205889917U (en) * | 2016-08-23 | 2017-01-18 | 三一重型能源装备有限公司 | Formpiston location interfacing apparatus and fan blade mould |
| CN210634146U (en) * | 2019-09-26 | 2020-05-29 | 机械科学研究总院江苏分院有限公司 | Carbon-fibre composite compression molding mould |
| KR102300520B1 (en) * | 2020-05-28 | 2021-09-09 | (주)탑아이엔디 | Molding device for wet compression molding of carbon fiber preform |
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2021
- 2021-11-29 CN CN202111434518.2A patent/CN114131961A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005077632A1 (en) * | 2004-02-17 | 2005-08-25 | Toray Industries, Inc. | Rtm molding method and device |
| EP2719520A1 (en) * | 2012-10-10 | 2014-04-16 | Compose | Mould, connector especially adapted for use in such a mould, moulding facility and method using such a mould |
| CN205889917U (en) * | 2016-08-23 | 2017-01-18 | 三一重型能源装备有限公司 | Formpiston location interfacing apparatus and fan blade mould |
| CN210634146U (en) * | 2019-09-26 | 2020-05-29 | 机械科学研究总院江苏分院有限公司 | Carbon-fibre composite compression molding mould |
| KR102300520B1 (en) * | 2020-05-28 | 2021-09-09 | (주)탑아이엔디 | Molding device for wet compression molding of carbon fiber preform |
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