CN114683589A - Composite material plate injection molding die tool and molding method thereof - Google Patents
Composite material plate injection molding die tool and molding method thereof Download PDFInfo
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- CN114683589A CN114683589A CN202210335061.8A CN202210335061A CN114683589A CN 114683589 A CN114683589 A CN 114683589A CN 202210335061 A CN202210335061 A CN 202210335061A CN 114683589 A CN114683589 A CN 114683589A
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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
- B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
- B29C70/78—Moulding material on one side only of the preformed part
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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
- B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
- B29C70/681—Component parts, details or accessories; Auxiliary operations
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Abstract
The invention relates to a composite material plate injection molding die tool, which comprises a plurality of upper die modules, an integral lower die, a glue outlet, a glue inlet, a first sealing groove, a silicon rubber sealing strip, a second sealing groove, a glue inlet runner and a glue outlet runner, wherein the upper die modules are arranged on the upper die modules; a plurality of last mould modules connect gradually and install in whole lower mould, go up the headspace that forms between mould module and the whole lower mould and be used for placing at least one panel preform, every goes up the mould module and has all seted up out the gluey hole along its thickness direction, advances the gluey hole, the headspace between second seal groove and the panel preform forms the gluey runner of advancing that corresponds, goes out gluey runner, goes out gluey hole, advances gluey hole and respectively with the play gluey runner that corresponds, advance gluey runner intercommunication. According to the composite material plate injection molding die tool and the molding method thereof, when the composite material plate is prepared by adopting a liquid molding process, the manufacturing of a plurality of plates with different thicknesses can be completed by using one set of die, and the utilization efficiency of the die is improved.
Description
Technical Field
The invention relates to the technical field of resin-based composite material liquid molding, in particular to a composite material plate injection molding die tool and a molding method thereof.
Background
The Resin Transfer Molding (RTM) technology is mainly characterized by firstly laying a designed prefabricated part in a mold cavity, injecting a special Resin system into the mold cavity by adopting injection equipment, exhausting gas in the mold cavity through Resin flow, simultaneously infiltrating fibers, heating, curing, cooling and demolding to obtain a composite material part. A single-side mould forming method is used when the composite material plate is prepared by the prepreg/autoclave process, namely, one surface of a formed composite material part is supported by a mould (a film-sticking surface), the other surface of the formed composite material part is pressed by a vacuum bag or a soft mould (a bag-sticking surface), and a large-scale frame structure single-side mould is adopted. Because the thickness direction and the periphery are not limited by a mold cavity, the prepreg with any thickness and any size can be laid in the range of the molded surface of the mold to manufacture the plate, and the utilization rate of raw materials is high. When the composite material member is prepared by adopting the RTM process, because the double-sided closed die is adopted, the area and the thickness of the plate are limited by the size of the die cavity, a plurality of sets of dies are needed when the plates with different specifications are manufactured, and the material utilization rate is low due to the fact that blanking is carried out according to the die cavities with different sizes.
Therefore, the inventor provides a composite material plate injection molding die tool and a molding method thereof.
Disclosure of Invention
(1) Technical problem to be solved
The embodiment of the invention provides a composite material plate injection molding die tool and a molding method thereof, and solves the technical problem of how to simultaneously prepare a plurality of composite material plates with different thicknesses by adopting a set of dies under a liquid molding process.
(2) Technical scheme
The invention provides a composite material plate injection molding die tool, which comprises a plurality of upper die modules, an integral lower die, a glue outlet hole, a glue inlet hole, a first sealing groove, a silicon rubber sealing strip, a second sealing groove, a glue inlet flow channel and a glue outlet flow channel, wherein the upper die modules are arranged on the upper die modules;
the upper die modules are sequentially connected and installed on the integral lower die, a reserved space formed between the upper die modules and the integral lower die is used for placing at least one plate prefabricated body, each upper die module is provided with a glue outlet hole and a glue inlet hole along the thickness direction, the reserved space between the second sealing groove and the plate prefabricated body forms a corresponding glue inlet runner and a corresponding glue outlet runner, and the glue outlet hole and the glue inlet hole are respectively communicated with the corresponding glue outlet runner and the corresponding glue inlet runner;
the first sealing groove is formed in one side face, perpendicular to the length direction of the integral lower die, of each upper die module, the other side face of each upper die module is a smooth plane, and the projection position of the end of the first sealing groove is in the range of the second sealing groove; the second sealing groove is formed in the two sides of the working molded surface of the whole lower die in the length direction, and the silicon rubber sealing strips are arranged in the first sealing groove and the second sealing groove.
Furthermore, the composite material plate injection molding die tool further comprises a plurality of cushion blocks and cushion block platforms, wherein the cushion blocks are a series of cushion blocks with different heights and respectively correspond to plates with different thickness specifications; the cushion block platform is arranged on the outer side of the second sealing groove, a plurality of cushion blocks are arranged on the end face of the cushion block platform, and the lower end face of each upper die module is attached to the upper end face of the corresponding cushion block.
Further, the composite material plate injection molding die tool further comprises a first fastener and a second fastener, the upper die module and the integral lower die are fixed through the first fastener, and each adjacent upper die module is fixed through the second fastener.
Further, combined material panel injection moulding mould frock still includes the connecting plate, the edge of going up the mould module all is equipped with the connecting plate, adjacent two go up the mould intermodule through corresponding the second fastener passes two in proper order the U type groove of connecting plate is fixed.
Further, the composite material plate injection molding die tool further comprises a cavity filling part, and the cavity filling part is placed between the plate prefabricated body and the silicon rubber sealing strip perpendicular to the length direction of the integral lower die.
Furthermore, the upper and lower surfaces of the silicon rubber sealing strip are respectively contacted with the working profiles of the upper die module and the whole lower die, and the end of the silicon rubber sealing strip in the length direction of the whole lower die is attached to the silicon rubber sealing strip placed in the second sealing groove.
Furthermore, the cross-sectional height of the silicon rubber sealing strip is greater than the height of the plate prefabricated body, and the static friction force of the contact surface of the silicon rubber sealing strip and the upper die module and the whole lower die is greater than the injection pressure of the resin in the cavity to the silicon rubber sealing strip during injection.
Furthermore, the projection positions of the glue outlet and the glue inlet on the whole lower die are respectively positioned above the glue outlet runner and the glue inlet runner.
Furthermore, the plurality of silicon rubber sealing strips are a series of silicon rubber sealing strips with different cross section areas and respectively correspond to the plates with different thickness specifications; the cross section of each silicon rubber sealing strip is rectangular, and the width of the cross section is larger than the height of the cross section.
The second aspect of the invention provides a molding method of a composite material plate injection molding die tool, which comprises the following steps:
cleaning the sealing grooves and the surfaces of the working molded surfaces of the integral lower die and each upper die module, and attaching demolding materials or smearing demolding agents on the working molded surfaces of the integral lower die and each upper die module;
placing a corresponding silicon rubber sealing strip in a sealing groove of the integral lower die according to the thickness specification of the formed plate, and placing a sealing rubber strip in a first sealing groove;
selecting a corresponding cushion block according to the thickness of each plate prefabricated body, and placing the cushion block on a cushion block platform according to the length size range of each plate prefabricated body;
laying the layers of the panel preforms on the working molded surface of the integral lower die, placing silicon rubber sealing strips on two sides of each panel preform parallel to the glue injection direction, adhering the ends of the silicon rubber sealing strips to the silicon rubber sealing strips placed in the second sealing grooves, and filling sealant glue between the adhering surfaces;
a cavity filling part is arranged between the plate prefabricated body and the sealing rubber strips parallel to the two sides of the glue injection direction, and a space is reserved between the plate prefabricated body and the second sealing groove;
after the laying of all the plate preforms is finished, sequentially placing the upper die module corresponding to each plate preform above the plate preforms, splicing two adjacent upper die modules according to the sequence that the end surfaces without the sealing grooves are contacted with the end surfaces with the sealing grooves, and fixing the assembled upper die modules;
after all the upper die modules are placed, fixing each upper die module with the integral lower die, and compacting the plate prefabricated body and the silicon rubber sealing strip to ensure that the working profile of the lower end surface of each upper die module is attached to the upper end surface of the corresponding cushion block;
connecting a glue injection port and a glue outlet of the upper die module with corresponding pipelines, vacuumizing a die cavity through the glue outlet pipeline and heating the die;
after the temperature of the mold is raised to a set temperature, injecting resin into the mold cavity until the plate preform is covered;
raising the mold to a curing temperature and completing the entire resin curing process;
and cooling the die, and after the die is cooled, sequentially removing the upper die modules to finish the preparation of the composite material plate.
(3) Advantageous effects
In conclusion, the invention adopts a modular design, can prepare the plate with any thickness by matching different sub-modules within the allowable thickness range of the die cavity of the die, has no limit on the length of the plate within the range of the die cavity, and can simultaneously complete the preparation of a plurality of composite plates with different sizes and thickness specifications by adopting the same curing process within a single injection curing period of one set of die. When the large-area plates with the same thickness are manufactured after all the modules are combined, the fiber fabric blanking can be planned according to the maximum projection area of the die cavity, compared with the mode that a plurality of sets of dies are adopted to manufacture the plates with the same area, the blanking difficulty is greatly reduced, the laying time is shortened, and the material utilization rate is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments of the present invention will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a composite material plate injection molding die tool provided in an embodiment of the present invention;
FIG. 2 is an exploded view of a composite material plate injection molding tool according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a preform package of a composite material plate injection molding tool according to an embodiment of the present invention;
FIG. 4 is a schematic diagram illustrating relative positions of a silicone rubber sealing strip and a cavity filling material when a composite material plate injection molding mold tool provided by an embodiment of the invention is used for encapsulating a plate preform;
FIG. 5 is an exploded view of another composite injection mold tooling provided in accordance with an embodiment of the present invention;
FIG. 6 is a schematic diagram of a preform package of another composite material plate injection molding tool provided in an embodiment of the present invention;
fig. 7 is a schematic flow chart of a molding method of a composite material plate injection molding die tool according to an embodiment of the present invention.
In the figure:
1-a first upper die module; 2-a second upper die module; 3-a third upper die module; 4-integral lower die; 5-connecting plates; 6-connecting a plate U-shaped groove; 7-glue outlet holes; 8-glue inlet holes; 9-a first fastener; 10-a second fastener; 11-a first seal groove; 12-a first sheet preform; 13-a second sheet preform; 14-a third sheet preform; 15-a first pad; 16-a second head block; 17-a third head block; 18-integral lower die working profile; 19-a second seal groove; 20-a glue inlet flow channel; 21-glue outlet flow channel; 22-a first silicone rubber sealing strip; 23-a second silicone rubber sealing strip; 24-a third silicone rubber sealing strip; 25-a fifth silicone rubber sealing strip; 26. a sixth silicone rubber sealing strip; 27-a seventh silicone rubber sealing strip; 28-cavity filling; 29-a pad platform; 30-a fourth sheet preform; 31-a fourth head block; 32-a fourth silicone rubber sealing strip; 33-eighth silicone rubber seal.
Detailed Description
The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following detailed description of the embodiments and the accompanying drawings are provided to illustrate the principles of the invention and are not intended to limit the scope of the invention, i.e., the invention is not limited to the embodiments described, but covers any modifications, alterations, and improvements in the parts, components, and connections without departing from the spirit of the invention.
It should be noted that, in the present application, the embodiments and features of the embodiments may be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Fig. 1 is a schematic structural diagram of a composite material plate injection molding mold tool according to an embodiment of the present invention, where the molding mold tool may include a plurality of upper mold modules, an integral lower mold 4, a glue outlet 7, a glue inlet 8, a first sealing groove 11, a silicone rubber sealing strip, a second sealing groove 19, a glue inlet runner 20, and a glue outlet runner 21;
the plurality of upper die modules are sequentially connected and installed on the integral lower die 4, a reserved space formed between each upper die module and the integral lower die 4 is used for placing at least one plate prefabricated body, each upper die module is provided with a glue outlet hole 7 and a glue inlet hole 8 along the thickness direction of the upper die module, a corresponding glue inlet runner 20 and a corresponding glue outlet runner 21 are formed in the reserved space between the second sealing groove 19 and the plate prefabricated body, and the glue outlet holes 7 and the glue inlet holes 8 are respectively communicated with the corresponding glue outlet runners 21 and the corresponding glue inlet runners 20;
a first seal groove 11 is formed in one side surface of each upper die module in the direction perpendicular to the length direction of the integral lower die 4, the other side surface of each upper die module is a smooth plane, and the projection position of the end of the first seal groove 11 is in the range of the second seal groove 19; second seal groove 19 has all been seted up along its length direction's both sides to the work profile of whole lower mould 4, all places the silicone rubber sealing strip in first seal groove 11, the second seal groove 19.
In the above embodiment, the RTM process composite material sheet material of different specifications can be flexibly produced. In order to realize that composite material plates with different specifications adopting the same curing process are manufactured simultaneously in a single injection and curing period of a set of die, the plate preform with any thickness within the maximum allowable thickness range of the die needs to be molded, the length of the plate within a die cavity range is not limited, and the requirement of die sealing during resin pressurized injection is met. The difficulty of manufacturing large-area plates by adopting an RTM process is reduced, and the RTM process composite material plates are manufactured by adopting a tooling structure similar to an autoclave process.
The working profile of the upper die module is a smooth plane and is not provided with a sealing groove.
In some optional embodiments, the composite material plate injection molding mold tool further comprises a plurality of cushion blocks and a cushion block platform 29, wherein the plurality of cushion blocks are a series of cushion blocks with different heights and respectively correspond to plates with different thickness specifications; the cushion block platform 29 is arranged on the outer side of the second seal groove 19, a plurality of cushion blocks are arranged on the end face of the cushion block platform 29, and the lower end face of each upper die module is attached to the upper end face of the corresponding cushion block.
Specifically, the cushion block can be used for manufacturing plates with any thickness, the length of the plates in a cavity range is not limited, and a plurality of composite plates with different sizes and thickness specifications and adopting the same curing process can be manufactured simultaneously in a single injection curing period of a set of die
In some optional embodiments, the composite material plate injection molding tool further comprises a first fastener 9 and a second fastener 10, the upper die module and the integral lower die 4 are fixed by the first fastener 9, and each adjacent upper die module is fixed by the second fastener 10.
The first fastening piece 9 can be used for quickly and fixedly mounting a plurality of upper die modules and the whole lower die 4, and the second fastening piece 10 can be used for quickly and fixedly connecting the plurality of upper die modules.
In some optional embodiments, the composite material plate injection molding mold tool further comprises connecting plates 5, the connecting plates 5 are arranged at the corners of the upper mold modules, and two adjacent upper mold modules are fixed by corresponding second fasteners 10 which sequentially penetrate through the U-shaped grooves 6 of the two connecting plates 5.
Specifically, the connecting plate 5 and the U-shaped groove 6 thereof are arranged so as to connect a plurality of upper die modules in sequence more quickly, and the positions of the connecting bolts are adjustable in the U-shaped groove 6, so that the die tool is simpler and quicker to install.
In some optional embodiments, the composite material plate injection molding mold tooling further comprises a cavity filling part 28, and the cavity filling part 28 is placed between the plate preform and the silicone rubber sealing strip perpendicular to the length direction of the integral lower mold 4.
The cavity filling section 28 is a flexible sealing material that is resistant to high temperatures, and fills gaps between the preform and the weatherstrip to prevent the resin from passing through the gaps.
In some alternative embodiments, the upper and lower surfaces of the silicone rubber sealing strip are respectively contacted with the working profiles of the upper die module and the integral lower die 4, and the end of the silicone rubber sealing strip perpendicular to the length direction of the integral lower die 4 is attached to the silicone rubber sealing strip placed in the second sealing groove 19.
Specifically, the arrangement mode of the silicone rubber sealing strip is to further improve the overall sealing performance of the die tool.
In some optional embodiments, the cross-sectional height of the silicone rubber sealing strip is greater than the height of the plate preform, and the static friction force of the contact surface of the silicone rubber sealing strip with the upper die module and the integral lower die 4 is greater than the injection pressure of the resin in the cavity to the silicone rubber sealing strip during injection.
Specifically, when the resin is injected, the resin flowing in the cavity transfers the pressure of the applied injection pressure to the inner wall of the cavity, the sealing strip is compacted by the upper die and the lower die, and if the horizontal friction force generated by up-down compaction is smaller than the internal outward pressure, the sealing strip can slide, and the sealing failure causes the resin to overflow.
In some alternative embodiments, the projection positions of the glue outlet 7 and the glue inlet 8 on the integral lower die 4 are respectively located above the glue outlet runner 21 and the glue inlet runner 20.
The communication between the glue inlet hole 8 and the glue inlet runner 20 can facilitate the injection of resin into the mold cavity; the communication between the glue outlet hole 7 and the glue outlet runner 21 can facilitate the vacuumizing of the mold cavity.
In some optional embodiments, the plurality of silicone rubber sealing strips are a series of silicone rubber sealing strips with different cross-sectional areas, and respectively correspond to plates with different thickness specifications; the cross section of the silicon rubber sealing strip is rectangular, and the width of the cross section is larger than the height of the cross section.
Specifically, the section width is greater than the section height so that the cross section of the rubber sealing strip can be pressed into a flat shape after compaction, the bottom area contacted with the upper die and the lower die can be increased, the friction force between the sealing strip and the contact molded surface of the upper die and the lower die is increased, and the sliding caused by the pressure of the inner side cavity in the injection process is prevented. The silicon rubber sealing strips around the plate prefabricated body form a closed mold cavity together with the upper mold module and the whole lower mold 4 which are contacted after the mold closing, compaction and deformation.
Fig. 7 is a schematic flow chart of a molding method of a composite material plate injection molding tool according to an embodiment of the present invention, where the molding method may include the following steps:
s101, cleaning sealing grooves and working profile surfaces of the integral lower die and each upper die module, and attaching demolding materials or coating demolding agents on the working profiles of the integral lower die and each upper die module;
s102, placing a corresponding silicon rubber sealing strip in a sealing groove of the integral lower die according to the thickness specification of a formed plate, and placing a sealing rubber strip in a first sealing groove;
s103, selecting a corresponding cushion block according to the thickness of each plate prefabricated body, and placing the cushion block on a cushion block platform according to the length dimension of each plate prefabricated body;
s104, laying layers of the plate prefabricated bodies on the working molded surface of the integral lower die, placing silicon rubber sealing strips on two sides of each plate prefabricated body parallel to the glue injection direction, attaching the ends of the silicon rubber sealing strips to the silicon rubber sealing strips placed in the second sealing grooves, and filling sealant glue between the attaching surfaces;
s105, placing a cavity filling part between the plate prefabricated body and the sealing rubber strips on two sides parallel to the glue injection direction, and leaving a space between the plate prefabricated body and the second sealing groove;
s106, after laying all the plate preforms, sequentially placing the upper die module corresponding to each plate preform above the plate preforms, splicing two adjacent upper die modules according to the sequence that the end faces without the sealing grooves are in contact with the end faces with the sealing grooves, and fixing the assembled upper die modules;
s107, after all the upper die modules are placed, fixing each upper die module with the whole lower die, and compacting the plate prefabricated body and the silicon rubber sealing strips to enable the working molded surface of the lower end surface of each upper die module to be attached to the upper end surface of the corresponding cushion block;
s108, connecting the glue injection port and the glue outlet of the upper die module with corresponding pipelines, vacuumizing the die cavity through the glue outlet pipeline and heating the die;
s109, after the temperature of the mold is raised to a set temperature, injecting resin into the mold cavity until the plate preform is covered;
s110, raising the temperature of the mold to a curing temperature and completing the whole resin curing process;
and S111, cooling the die, and after the die is cooled, sequentially removing the upper die modules to complete the preparation of the composite material plate.
In the above embodiment, before step S104, the method further includes: blanking of laying layers of the plate prefabricated body is carried out, the shape of the material sheet is rectangular, and when a plurality of plates with different thicknesses are blanked, the dimension of the material sheet corresponding to the plate with the same thickness in the length direction parallel to the tool is the length { W) in the direction of the upper die modules, which is closest to and larger than the length of the plate1、Wk、…、WnThe combined length of the fingers. The size of the material sheet in the direction perpendicular to the length direction of the tool is a fixed value and does not exceed the distance between the glue inlet and the glue outlet of the upper die module.
Specifically, in step 105, the cross-sectional height of the silicone rubber sealing strips placed on both sides of the cavity filling portion increases as the thickness of the plate increases.
Specifically, in step 106, the plate preforms are sequentially raised or lowered in the thickness order of the plate preforms on the integral lower die along the integral lower die in the direction parallel to the length direction of the tool for arrangement and placement.
Example 1
Fig. 1 to fig. 4 are a configuration of a composite material plate injection molding tool and a method for using the same provided in this embodiment, taking the example of simultaneously preparing three plate preforms.
The upper die module group consists of three upper die modules, including a first upper die module 1, a second upper die module 2 and a third upper die module 3, wherein the size of each upper die module in the direction perpendicular to the length direction of the die fixture is the same, and the size in the direction parallel to the length direction of the die fixture is not limited.
The two sides of each upper die module are provided with connecting plates 5, the modules penetrate through connecting plate U-shaped grooves 6 of the two connecting plates 5 through second fasteners 10 (fastening bolts) parallel to the length direction of the tool to be fixed, and the upper die modules and the whole lower die 4 are fixed through first fasteners 9 (fastening bolts) perpendicular to the working profile direction of the tool.
Each upper die module is perpendicular to two side faces in the length direction of the tool, one end face is a smooth plane, a first sealing groove 11 is machined in the other end face, and the projection position of the end of the first sealing groove 11 is in the range of a second sealing groove 19.
The lower end face of the working molded surface of the upper die module is a smooth plane, and the working molded surface is not provided with a sealing groove.
Wherein, go up the mould module and beaten out glue hole 7, advance glue hole 8 in the direction of perpendicular to up end, go out glue hole 7 and advance the projection position of glue hole 8 on whole lower mould and be located respectively and advance gluey runner 20 and go out gluey runner 21.
Wherein, the working profile of the whole lower die 4 is a smooth plane, and two sides of the working profile are provided with second sealing grooves 19 parallel to the length direction of the tool.
Wherein, the outside of second seal groove 19 is cushion block platform 29, and the terminal surface of cushion block platform 29 is a smooth plane, and the height of the terminal surface of cushion block platform 29 is not higher than the height of whole lower mould working profile 18.
The end face of the cushion block platform 29 is provided with a cushion block group which comprises a first cushion block 15, a second cushion block 16 and a third cushion block 17, the cushion block group is provided with a series of cushion blocks with different heights and respectively corresponds to plates with different thickness specifications, and the upper end face of each cushion block is in contact with the working molded surface of the lower end face of the upper die module.
The silicone rubber sealing strip group is provided with a series of silicone rubber sealing strips with different cross section areas, and comprises a first silicone rubber sealing strip 22 parallel to the length direction of the tool, a second silicone rubber sealing strip 23 parallel to the length direction of the tool, a third silicone rubber sealing strip 24 parallel to the length direction of the tool, a fifth silicone rubber sealing strip 25 vertical to the length direction of the tool, a sixth silicone rubber sealing strip 26 vertical to the length direction of the tool, and a seventh silicone rubber sealing strip 27 vertical to the length direction of the tool, wherein the silicone rubber sealing strips correspond to plates with different thickness specifications respectively, the cross sections of the silicone rubber sealing strips are rectangular, and the section widths of the silicone rubber sealing strips are larger than the section heights of the silicone rubber sealing strips.
As a specific embodiment of the invention, a first silicone rubber sealing strip 22 parallel to the length direction of the tool and a fifth silicone rubber sealing strip 25 perpendicular to the length direction of the tool are placed around the first plate preform 12, and form a closed mold cavity with the first upper mold module 1 and the integral lower mold 4 which are in contact after being compacted and deformed; a second silicon rubber sealing strip 23 parallel to the length direction of the tool and a sixth silicon rubber sealing strip 26 vertical to the length direction of the tool are placed around the second plate prefabricated body 13, and the second silicon rubber sealing strips are compacted and deformed to form a closed die cavity with the second upper die module 2 and the integral lower die 4 which are in contact with each other; and a third silicon rubber sealing strip 24 parallel to the length direction of the tool and a third silicon rubber sealing strip 27 vertical to the length direction of the tool are placed around the third plate prefabricated body 14, and form a closed die cavity with the third upper die module 3 and the whole lower die 4 which are contacted after compaction and deformation.
The first silicon rubber sealing strip 22 parallel to the length direction of the tool, the second silicon rubber sealing strip 23 parallel to the length direction of the tool and the third silicon rubber sealing strip 24 parallel to the length direction of the tool are placed on the second sealing grooves 19 on the two sides of the working profile 18 of the integral lower die, and the upper surface and the lower surface of the first silicon rubber sealing strip are in contact with the working profiles of the first upper die module 1, the second upper die module 2 and the third upper die module 3 and the surfaces of the second sealing grooves 19 respectively.
The fifth silicon rubber sealing strips 25 vertical to the length direction of the tool are placed on two sides of the first plate prefabricated body 12 and are parallel to the side edges of the plate prefabricated body, the upper surface of the fifth silicon rubber sealing strips 25 is in contact with the working profile of the first upper die module 1, the lower surface of the fifth silicon rubber sealing strips 25 is in contact with the working profile of the integral lower die 4, and the end of the fifth silicon rubber sealing strips 25 vertical to the length direction of the tool is tightly attached to the first silicon rubber sealing strips 22 parallel to the length direction of the tool and placed in the second sealing groove 19; sixth silicone rubber sealing strips 26 vertical to the length direction of the tool are placed on two sides of the second plate prefabricated body 13 and are parallel to the side edges of the plate prefabricated body, the upper surface of each sixth silicone rubber sealing strip 26 is in contact with the working profile of the second upper die module 2, the lower surface of each sixth silicone rubber sealing strip 26 vertical to the length direction of the tool is in contact with the working profile of the integral lower die 4, and the end of each sixth silicone rubber sealing strip 26 vertical to the length direction of the tool is tightly attached to a second silicone rubber sealing strip 23 which is placed in a second sealing groove 19 and is parallel to the length direction of the tool; the seventh silicone rubber sealing strips 27 perpendicular to the length direction of the tool are placed on two sides of the third plate prefabricated body 14 and are parallel to the side edges of the plate prefabricated body, the upper surface of each seventh silicone rubber sealing strip 27 is in contact with the working surface of the third upper die module 3, the lower surface of each seventh silicone rubber sealing strip 27 perpendicular to the length direction of the tool is in contact with the working surface of the whole lower die 4, and the end of each seventh silicone rubber sealing strip 27 perpendicular to the length direction of the tool is tightly attached to the third silicone rubber sealing strip 24 placed in the second sealing groove 19 and parallel to the length direction of the tool.
The cross-sectional heights of the first silicon rubber sealing strip 22 in the length direction of the tool and the fifth silicon rubber sealing strip 25 in the length direction of the tool are greater than the height of the first plate prefabricated part 12 sealed by the first silicon rubber sealing strip and the fifth silicon rubber sealing strip 25 in the length direction of the tool, and the static friction force of the contact surface of the first silicon rubber sealing strip and the mold is greater than the injection pressure of resin in the cavity on the first silicon rubber sealing strip 22 in the length direction of the tool and the fifth silicon rubber sealing strip 25 in the length direction of the tool in the injection process; the height of the cross sections of the second silicon rubber sealing strip 23 parallel to the length direction of the tool and the sixth silicon rubber sealing strip 26 vertical to the length direction of the tool is greater than the height of the second plate prefabricated part 13 sealed by the second silicon rubber sealing strip 23, and the static friction force of the contact surface of the second silicon rubber sealing strip 23 and the sixth silicon rubber sealing strip 26 vertical to the length direction of the tool with the mold is greater than the injection pressure of resin in the cavity on the second silicon rubber sealing strip 23 parallel to the length direction of the tool and the sixth silicon rubber sealing strip 26 vertical to the length direction of the tool during injection; the cross-sectional heights of the third silicon rubber sealing strip 24 parallel to the length direction of the tool and the seventh silicon rubber sealing strip 27 vertical to the length direction of the tool are greater than the height of the third plate prefabricated part 14 sealed by the third silicon rubber sealing strip and the seventh silicon rubber sealing strip 27 vertical to the length direction of the tool, and the static friction force of the contact surface of the third silicon rubber sealing strip and the seventh silicon rubber sealing strip with the mold is greater than the injection pressure of resin in the cavity on the third silicon rubber sealing strip 24 parallel to the length direction of the tool and the seventh silicon rubber sealing strip 27 vertical to the length direction of the tool during injection.
The method for preparing the composite material plate by using the composite material plate injection molding die tool comprises the following steps:
step 1: cleaning sealing grooves and working surface surfaces of the integral lower die 4 and the first upper die module 1, the second upper die module 2 and the third upper die module 3, and pasting a demolding material or smearing a demolding agent on the working surface of the die;
step 2: placing a first parallel tool length direction silicon rubber sealing strip 22, a second parallel tool length direction silicon rubber sealing strip 23 and a third parallel tool length direction silicon rubber sealing strip 24 in the second sealing groove 19 according to the thickness specification of the formed plate, and placing a sealing rubber strip in the first sealing groove 11;
and step 3: blanking the laying of the plate preforms for the first plate preform 12, the second plate preform 13 and the third plate preform 14, wherein the shape of a material sheet is rectangular, and the size of the material sheet corresponding to the first plate preform 12 in the length direction parallel to the tool does not exceed the length W of the first upper die module 11The size of a material sheet vertical to the length direction of the tool does not exceed the distance between the glue inlet hole 8 and the glue outlet hole 7 of the first upper die module 1, and the size of a material sheet corresponding to the second plate prefabricated body 13 in the length direction parallel to the tool does not exceed the length W of the second upper die module 22The size of a material sheet vertical to the length direction of the tool does not exceed the distance between the glue inlet hole 8 and the glue outlet hole 7 of the second upper die module 2, and a third plateThe dimension of the material sheet corresponding to the material preform 14 in the direction parallel to the length direction of the tool does not exceed the length W of the third upper die module 33The size of the material sheet vertical to the length direction of the tool does not exceed the distance between the glue inlet hole 8 and the glue outlet hole 7 of the third upper die module 3;
and 4, step 4: selecting a first cushion block 15 with a corresponding proper specification according to the thickness of the first plate preform 12, selecting a second cushion block 16 with a corresponding proper specification according to the thickness of the second plate preform 13, selecting a third cushion block 17 with a corresponding proper specification according to the thickness of the third plate preform 14, and placing the third cushion block on a cushion block platform 29 of the integral lower die 4 according to the length size range of each plate;
and 5: laying layers of a first plate prefabricated body 12, a second plate prefabricated body 13 and a third plate prefabricated body 14 on the working molded surface 18 of the integral lower die, placing fifth silicon rubber sealing strips 25 vertical to the length direction of the tool on two sides of the first plate prefabricated body 12 parallel to the glue injection direction, tightly attaching the ends of the fifth silicon rubber sealing strips 25 vertical to the length direction of the tool to first silicon rubber sealing strips 22 parallel to the length direction of the tool and placed in second sealing grooves 19, and filling sealant between the attaching surfaces; placing sixth silicon rubber sealing strips 26 perpendicular to the length direction of the tool on two sides of the second plate prefabricated body 13 parallel to the glue injection direction, wherein the end of each sixth silicon rubber sealing strip 26 perpendicular to the length direction of the tool is tightly attached to a second silicon rubber sealing strip 23 parallel to the length direction of the tool and placed in a second sealing groove 19, and sealant is filled between the attachment surfaces; placing seventh silicon rubber sealing strips 27 vertical to the length direction of the tool on two sides of the third plate prefabricated body 14 parallel to the glue injection direction, tightly attaching the end of the seventh silicon rubber sealing strip 27 vertical to the length direction of the tool to third silicon rubber sealing strips 24 parallel to the length direction of the tool and placed in the second sealing groove 19, and filling sealant between the attaching surfaces; the cross section heights of a fifth silicon rubber sealing strip 25 vertical to the length direction of the tool, a sixth silicon rubber sealing strip 26 vertical to the length direction of the tool and a seventh silicon rubber sealing strip 27 vertical to the length direction of the tool are gradually increased; the first plate prefabricated body 12, the second plate prefabricated body 13 and the third plate prefabricated body 14 are sequentially arranged and placed on the whole lower die 4 in the direction parallel to the length direction of the tool according to the thickness sequence of the first plate prefabricated body 12, the second plate prefabricated body 13 and the third plate prefabricated body 14 from low to high.
Step 6: a cavity filling part 28 is arranged between the first plate preform 12 and a fifth silicone rubber sealing strip 25 vertical to the length direction of the tool, between the second plate preform 13 and a sixth silicone rubber sealing strip 26 vertical to the length direction of the tool, and between the third plate preform 14 and a seventh silicone rubber sealing strip 27 vertical to the length direction of the tool, a space is left between the first plate preform 12, the second plate preform 13, the third plate preform 14 and the second sealing groove 19, and the left range covers the projection positions of the glue inlet hole 8 and the glue outlet hole 7 of the first upper die module 1, the second upper die module 2 and the third upper die module 3 and is used as a glue inlet flow passage 20 of the glue inlet hole 8 and a glue outlet flow passage 21 of the glue outlet hole 7;
and 7: after the fiber preforms of all the plates are laid, a first upper die module 1 corresponding to a first plate preform 12, a second upper die module 2 corresponding to a second plate preform 13 and a third upper die module 3 corresponding to a third plate preform 14 are sequentially placed above the preforms, the two adjacent upper die modules are spliced according to the sequence that the end surfaces without the sealing grooves are contacted with the end surface with the first sealing groove 11, and the assembled upper die modules are fixed through a second fastener 10 parallel to the length direction of the tool by penetrating through the U-shaped grooves 6 of the two connecting plates 5;
and 8: after all the upper die modules are placed, fixing the first upper die module 1, the second upper die module 2 and the third upper die module 3 with the integral lower die 4 by using a first fastener 9 perpendicular to the direction of the working profile of the tool, compacting the silicon rubber sealing strips corresponding to the first plate prefabricated body 12, the second plate prefabricated body 13 and the third plate prefabricated body 14, and tightly attaching the working profiles of the lower end surfaces of the first upper die module 1, the second upper die module 2 and the third upper die module 3 to the corresponding upper end surfaces of the first group of cushion blocks 15, the second group of cushion blocks 16 and the third group of cushion blocks 17;
and step 9: connecting a glue inlet hole 8 and a glue outlet hole 7 of the upper die module with corresponding pipelines, vacuumizing a die cavity of the die through the pipeline connected with the glue outlet, and heating the die;
step 10: after the temperature of the mold is raised to a specified temperature, resin is injected into a mold cavity of the mold, and the fiber preform is filled;
step 11: raising the mold to a curing temperature and completing the entire resin curing process;
step 12: and cooling the die, and after the die is cooled, sequentially removing the upper die modules to finish the preparation of the composite material plate.
Example 2
Fig. 5 to fig. 6 are a configuration of another composite material plate injection molding tool and a method for using the same according to this embodiment, so as to prepare a plate preform as an example.
The upper die module group consists of 3 upper die modules, and comprises a first upper die module 1, a second upper die module 2 and a third upper die module 3, wherein the size of each upper die module in the direction perpendicular to the length direction of the die fixture is the same, and the size of each upper die module in the direction parallel to the length direction of the die fixture is not limited.
Wherein, there is connecting plate 5 in every both sides of going up the mould module, and the intermodule is fixed through the connecting plate U type groove 6 that passes two connecting plates 5 through the second fastener 10 that is on a parallel with frock length direction, goes up the mould module and fixes through the first fastener 9 of perpendicular to frock working profile direction with whole lower mould 4.
Each upper die module is perpendicular to two side faces in the length direction of the tool, one end face is a smooth plane, a first sealing groove 11 is machined in the other end face, and the projection position of the end of the first sealing groove 11 is in the range of a second sealing groove 19.
The lower end face of the working molded surface of the upper die module is a smooth plane, and the working molded surface is not provided with a sealing groove.
Wherein, go up the mould module and beaten out glue hole 7, advance glue hole 8 in the direction of perpendicular to up end, go out glue hole 7 and advance the projection position of glue hole 8 on whole lower mould and be located respectively and advance gluey runner 20 and go out gluey runner 21.
Wherein, the working profile of the whole lower die 4 is a smooth plane, and two sides of the working profile are provided with second sealing grooves 19 parallel to the length direction of the tool.
Wherein, the outside of the second sealing groove 19 is a cushion block platform 29, the end surface of the cushion block platform 29 is a smooth plane, and the height of the end surface of the cushion block platform 29 is not higher than the height of the working profile 18 of the integral lower die.
The end face of the cushion block platform 29 is provided with a cushion block group which comprises a first cushion block 15, a second cushion block 16 and a third cushion block 17, the cushion block group is provided with a series of cushion blocks with different heights and respectively corresponds to plates with different thickness specifications, and the upper end face of each cushion block is in contact with the working molded surface of the lower end face of the upper die module.
The silicone rubber sealing strip group comprises a fourth silicone rubber sealing strip 32 parallel to the length direction of the tool and an eighth silicone rubber sealing strip 33 perpendicular to the length direction of the tool, the cross section of each silicone rubber sealing strip is rectangular, and the width of each cross section is larger than the height of each cross section.
The fourth silicon rubber sealing strip 32 parallel to the length direction of the tool and the eighth silicon rubber sealing strip 33 perpendicular to the length direction of the tool are placed around the fourth plate prefabricated body 14, and the fourth silicon rubber sealing strip, the eighth silicon rubber sealing strip and the fourth plate prefabricated body form a closed die cavity together with the first upper die module 1, the second upper die module 2, the third upper die module 3 and the whole lower die 4 which are in contact after being compacted and deformed.
Fourth silicon rubber sealing strips 32 parallel to the length direction of the tool are placed on the second sealing grooves 19 on two sides of the working profile 18 of the integral lower die, and the upper and lower surfaces of the fourth silicon rubber sealing strips are in contact with the working profiles of the first upper die module 1, the second upper die module 2 and the third upper die module 3 and the surface of the second sealing groove 19.
The eighth silicone rubber sealing strips 33 perpendicular to the length direction of the tool are placed on two sides of the fourth plate prefabricated body 30 and are parallel to the side edges of the plate prefabricated body 14, the upper surfaces of the eighth silicone rubber sealing strips 33 are in contact with the working molded surfaces of the first upper die module 1 and the third upper die module 3, the lower surfaces of the eighth silicone rubber sealing strips are in contact with the working molded surface of the whole lower die 4, and the end of the eighth silicone rubber sealing strip 33 perpendicular to the length direction of the tool is tightly attached to the eighth silicone rubber sealing strip 32 placed in the sealing groove of the lower die and parallel to the length direction of the tool.
The cross-sectional heights of the fourth silicone rubber sealing strip 32 parallel to the length direction of the tool and the eighth silicone rubber sealing strip 33 vertical to the length direction of the tool are greater than the height of the fourth plate prefabricated body 30 sealed by the fourth silicone rubber sealing strip 32, and the static friction force of the contact surface of the fourth silicone rubber sealing strip and the mold is greater than the injection pressure of resin in the cavity on the fourth silicone rubber sealing strip 32 parallel to the length direction of the tool and the eighth silicone rubber sealing strip 33 vertical to the length direction of the tool during injection.
The method for preparing the composite material plate by using the composite material plate injection molding die tool comprises the following steps:
step 1: cleaning sealing grooves and working surface surfaces of the integral lower die 4 and the first upper die module 1, the second upper die module 2 and the third upper die module 3, and pasting a demolding material or smearing a demolding agent on the working surface of the die;
and 2, step: placing a corresponding fourth parallel tool length direction silicone rubber sealing strip 32 in the second sealing groove 19 according to the thickness specification of the formed plate, placing a silicone rubber sealing strip in the first sealing groove 11, and tightly attaching the end of the silicone rubber sealing strip in the first sealing groove 11 to the fourth parallel tool length direction silicone rubber sealing strip 32 in the second sealing groove 19;
and step 3: blanking the layer of the plate fiber preform on the fourth plate preform 30, wherein the shape of a material sheet is rectangular, and the size of the material sheet corresponding to the fourth plate preform 30 in the length direction parallel to the tool does not exceed the length W of the first upper die module 11Length W of second upper die block 22And the length W of the third upper die block 33The sum of the lengths of (W)1+W2+W3) The size of the material sheet vertical to the length direction of the tool does not exceed the distance between the glue inlet hole 8 and the glue outlet hole 7 of the first upper die module 1, the second upper die module 2 and the third upper die module 3;
and 4, step 4: selecting a fourth cushion block 31 with a corresponding proper specification according to the thickness of the fourth plate preform 30 and placing the fourth cushion block 31 on the cushion block platform 29 of the integral lower die 4 according to the length size range of each plate;
and 5: paving layers of a fourth plate prefabricated body 30 on the working molded surface 18 of the integral lower die, placing eighth silicon rubber sealing strips 33 perpendicular to the length direction of the tool on two sides of the fourth plate prefabricated body 30 parallel to the glue injection direction, enabling the end of each eighth silicon rubber sealing strip 33 perpendicular to the length direction of the tool to be tightly attached to a fourth silicon rubber sealing strip 32 parallel to the length direction of the tool and placed in a second sealing groove 19, and filling sealant between the binding surfaces.
Step 6: a cavity filling part 28 is arranged between a fourth plate prefabricated body 30 and an eighth silicon rubber sealing strip 33 vertical to the length direction of the tool, a space is reserved between the fourth plate prefabricated body 30 and a second sealing groove 19, and the reserved range covers the projection positions of a glue inlet hole 8 and a glue outlet hole 7 of a first upper die module 1, a second upper die module 2 and a third upper die module 3 and is used as a glue inlet flow channel 20 of the glue inlet hole 8 and a glue outlet flow channel 21 of the glue outlet hole 7;
and 7: after the fiber preforms of all the plates are laid, a first upper die module 1, a second upper die module 2 and a third upper die module 3 corresponding to a fourth plate preform 30 are sequentially placed above the plate preforms, two adjacent upper die modules are spliced according to the sequence that the end faces without the sealing grooves are in contact with the end face with the first sealing groove 11, and the assembled upper die modules are fixed through a second fastener 10 parallel to the length direction of the tool and penetrating through the U-shaped grooves 6 of the two connecting plates 5;
and 8: after all the upper die modules are placed, fixing the first upper die module 1, the second upper die module 2 and the third upper die module 3 with the integral lower die 4 by using a first fastener 9 perpendicular to the direction of the working profile of the tool, compacting a fourth silicon rubber sealing strip 32 parallel to the length direction of the tool and corresponding to the fourth plate prefabricated body 30 and an eighth silicon rubber sealing strip 33 perpendicular to the length direction of the tool, and enabling the working profiles of the lower end surfaces of the first upper die module 1, the second upper die module 2 and the third upper die module 3 to be tightly attached to the upper end surfaces of the corresponding fourth cushion blocks 31;
and step 9: connecting a glue inlet hole 8 and a glue outlet hole 7 of the upper die module with corresponding pipelines, vacuumizing a die cavity of the die through the pipeline connected with the glue outlet, and heating the die;
step 10: after the temperature of the mold is raised to a specified temperature, resin is injected into a mold cavity of the mold, and the fiber preform is filled;
step 11: raising the mold to a curing temperature and completing the entire resin curing process;
step 12: and cooling the die, and after the die is cooled, sequentially removing the upper die modules to finish the preparation of the composite material plate.
It should be clear that the embodiments in this specification are described in a progressive manner, and the same or similar parts between the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. The present invention is not limited to the specific steps and structures described above and shown in the drawings. Also, a detailed description of known process techniques is omitted herein for the sake of brevity.
The above description is only an example of the present application and is not intended to limit the present application. Various modifications and alterations to this application will become apparent to those skilled in the art without departing from the scope of this invention. Any modification, equivalent replacement, improvement or the like made within the spirit and principle of the present application shall be included in the scope of the claims of the present application.
Claims (10)
1. The composite material plate injection molding die tool is characterized by comprising a plurality of upper die modules, an integral lower die (4), a glue outlet hole (7), a glue inlet hole (8), a first sealing groove (11), a silicon rubber sealing strip, a second sealing groove (19), a glue inlet runner (20) and a glue outlet runner (21);
the upper die modules are sequentially connected and mounted on the integral lower die (4), a reserved space formed between each upper die module and the integral lower die (4) is used for placing at least one plate prefabricated body, each upper die module is provided with a glue outlet hole (7) and a glue inlet hole (8) along the thickness direction of the upper die module, the reserved space between the second sealing groove (19) and the plate prefabricated bodies forms a corresponding glue inlet runner (20) and a corresponding glue outlet runner (21), and the glue outlet holes (7) and the glue inlet holes (8) are respectively communicated with the corresponding glue outlet runners (21) and the corresponding glue inlet runners (20);
a first sealing groove (11) is formed in one side surface of each upper die module in the direction perpendicular to the length direction of the integral lower die (4), the other side surface of each upper die module is a smooth plane, and the projection position of the end of each first sealing groove (11) is in the range of the second sealing groove (19); the second seal groove (19) is formed in the working molded surface of the whole lower die (4) along the two sides of the working molded surface in the length direction, and the silicon rubber seal strip is placed in the first seal groove (11) and the second seal groove (19).
2. The composite material plate injection molding die tool according to claim 1, further comprising a plurality of cushion blocks and a cushion block platform (29), wherein the plurality of cushion blocks are a series of cushion blocks with different heights and respectively correspond to plates with different thickness specifications; the cushion block platform (29) is arranged on the outer side of the second sealing groove (19), a plurality of cushion blocks are arranged on the end face of the cushion block platform (29), and the lower end face of each upper die module is attached to the upper end face of the corresponding cushion block.
3. The composite material plate injection molding die tooling as claimed in claim 1, further comprising a first fastener (9) and a second fastener (10), wherein the upper die module and the integral lower die (4) are fixed by the first fastener (9), and each adjacent upper die module is fixed by the second fastener (10).
4. The composite material plate injection molding die tool according to claim 3, further comprising connecting plates (5), wherein the connecting plates (5) are arranged at corners of the upper die modules, and the two adjacent upper die modules are fixed by the corresponding second fasteners (10) sequentially penetrating through the U-shaped grooves of the two connecting plates (5).
5. The composite material plate injection molding die tooling as claimed in claim 1, further comprising a cavity filling part (28), wherein the cavity filling part (28) is placed between the plate preform and a silicone rubber sealing strip perpendicular to the length direction of the integral lower die (4).
6. The composite material plate injection molding die tool according to claim 1, wherein the upper surface and the lower surface of the silicone rubber sealing strip are respectively contacted with the working profiles of the upper die module and the whole lower die (4), and the end of the silicone rubber sealing strip perpendicular to the length direction of the whole lower die (4) is attached to the silicone rubber sealing strip placed in the second sealing groove (19).
7. The composite material plate injection molding die tool according to claim 1 or 6, wherein the height of the cross section of the silicone rubber sealing strip is larger than the height of the plate preform, and the static friction force of the contact surface of the silicone rubber sealing strip with the upper die module and the integral lower die (4) is larger than the injection pressure of resin in a cavity on the silicone rubber sealing strip during injection.
8. The composite material plate injection molding die tool according to claim 1, wherein the projection positions of the glue outlet hole (7) and the glue inlet hole (8) on the integral lower die (4) are respectively located above the glue outlet runner (21) and the glue inlet runner (20).
9. The composite material plate injection molding die tool according to claim 1, wherein the plurality of silicone rubber sealing strips are a series of silicone rubber sealing strips with different cross sectional areas, and respectively correspond to plates with different thickness specifications; the cross section of each silicon rubber sealing strip is rectangular, and the width of the cross section is larger than the height of the cross section.
10. A forming method of a composite material plate injection forming die tool is characterized by comprising the following steps:
cleaning the sealing grooves and the surfaces of the working molded surfaces of the integral lower die and each upper die module, and attaching demolding materials or smearing demolding agents on the working molded surfaces of the integral lower die and each upper die module;
placing a corresponding silicon rubber sealing strip in a sealing groove of the integral lower die according to the thickness specification of the formed plate, and placing a sealing rubber strip in a first sealing groove;
selecting a corresponding cushion block according to the thickness of each plate prefabricated body, and placing the cushion block on a cushion block platform according to the length size range of each plate prefabricated body;
laying the layers of the panel preforms on the working molded surface of the integral lower die, placing silicon rubber sealing strips on two sides of each panel preform parallel to the glue injection direction, adhering the ends of the silicon rubber sealing strips to the silicon rubber sealing strips placed in the second sealing grooves, and filling sealant glue between the adhering surfaces;
a cavity filling part is arranged between the plate prefabricated body and the sealing rubber strips parallel to the two sides of the glue injection direction, and a space is reserved between the plate prefabricated body and the second sealing groove;
after the laying of all the plate preforms is finished, sequentially placing the upper die module corresponding to each plate preform above the plate preforms, splicing two adjacent upper die modules according to the sequence that the end surfaces without the sealing grooves are contacted with the end surfaces with the sealing grooves, and fixing the assembled upper die modules;
after all the upper die modules are placed, fixing each upper die module and the whole lower die, and compacting the plate prefabricated body and the silicon rubber sealing strips to enable the working profile of the lower end face of each upper die module to be attached to the upper end face of the corresponding cushion block;
connecting a glue injection port and a glue outlet of the upper die module with corresponding pipelines, vacuumizing a die cavity through the glue outlet pipeline and heating the die;
after the temperature of the mold is raised to a set temperature, injecting resin into the mold cavity until the plate preform is covered;
raising the mold to a curing temperature and completing the entire resin curing process;
and cooling the die, and after the die is cooled, sequentially removing the upper die modules to finish the preparation of the composite material plate.
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| CN115157722A (en) * | 2022-03-17 | 2022-10-11 | 吉林大学 | Process device and method for integrally forming embedded metal in composite material |
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| CN115157722A (en) * | 2022-03-17 | 2022-10-11 | 吉林大学 | Process device and method for integrally forming embedded metal in composite material |
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