CN115709547A - Composite material injection molding die - Google Patents
Composite material injection molding die Download PDFInfo
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- CN115709547A CN115709547A CN202211460552.1A CN202211460552A CN115709547A CN 115709547 A CN115709547 A CN 115709547A CN 202211460552 A CN202211460552 A CN 202211460552A CN 115709547 A CN115709547 A CN 115709547A
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Abstract
The invention relates to the technical field of resin-based composite material molding, in particular to a composite material injection molding mold, which comprises an injection module, a molding module and a glue sucking module, wherein the injection module and the molding module are connected with a molding mold glue injection pipeline; the injection module is communicated with the high-pressure gas source through a high-pressure gas pipeline; the problem of discontinuous process caused by transferring an injection device and a resin collecting device between the injection process and the heating and curing process and the problem of high environmental management cost caused by adopting a solvent to clean high-viscosity resin in the injection device and the resin collecting device are solved.
Description
Technical Field
The invention relates to the technical field of resin matrix composite material forming, in particular to a composite material injection forming die.
Background
The Resin Transfer Molding (RTM) technology is mainly characterized in that a designed prefabricated part is firstly laid in a mold cavity, a special resin system is injected into the mold cavity by adopting injection equipment, gas in the mold cavity is discharged by resin flowing, fibers are simultaneously infiltrated, and then the composite material part can be obtained by heating, curing, cooling and demolding. For a resin system which needs to be injected in a high-temperature environment, after the injection process is finished, the injection device and the resin collecting device for collecting resin flowing out of the mold need to be removed from an oven for performing a curing process of the forming mold, and a solvent is used for cleaning the residual resin in the device. Because the residual resin in the injection device and the resin collecting device is increased in viscosity and difficult to clean after contacting with a normal-temperature environment, a large amount of solvent is consumed, and the environmental treatment cost is increased.
Disclosure of Invention
The invention mainly aims at the problems, provides a composite material injection molding mold, and aims to solve the problems of discontinuous process caused by transferring an injection device and a resin collecting device between the injection process and the heating and curing process and high environmental management cost caused by cleaning high-viscosity resin in the injection device and the resin collecting device by using a solvent.
To achieve the above object, the present invention provides a method comprising: the injection molding device comprises an injection module, a molding module and a glue sucking module, wherein the injection module and the molding module are connected with a molding die glue injection pipeline, the molding module and the glue sucking module are connected with a molding die glue outlet pipeline, the molding die glue injection pipeline comprises a first branch pipe and a second branch pipe, the first branch pipe guides resin in an inner cavity of the injection module to flow into an inner cavity of the molding module, the second branch pipe guides resin in the inner cavity of the injection module to flow out of a high-temperature environment, one end, connected with the injection module, of the first branch pipe is provided with an injection module glue outlet stop valve, one end, connected with the molding module, of the first branch pipe is provided with a molding module glue inlet stop valve, a pipe outlet of the second branch pipe is used for connecting a first resin collecting tank, and the second branch pipe is provided with a first glue discharging valve; the injection module is communicated with the high-pressure gas source through a high-pressure gas pipeline.
Furthermore, the injection module is connected with a first vacuum source through a first vacuum pipeline, a first vacuum source stop valve is arranged at one end of the first vacuum pipeline, which is connected with the first vacuum source, and a vacuum pipeline stop valve is arranged at one end of the first vacuum pipeline, which is connected with the injection module; the high-pressure gas pipeline is connected with a high-pressure gas source stop valve is arranged at one end of the high-pressure gas source, and a pressure pipeline stop valve is arranged at one end of the injection module.
Further, the inner cavity of the injection module is provided with a heat conduction structure acting on inner cavity resin.
Furthermore, the injection module comprises an injection lower die, an injection middle die and an injection upper die, the heat conduction structure comprises a middle die transverse rib and a middle die longitudinal rib which are arranged on the injection middle die surface, and the middle die transverse rib and the middle die longitudinal rib penetrate through the injection middle die surface to divide the injection middle die into a plurality of independent resin storage cavities.
Further, heat conduction structure includes a plurality of glue flowing grooves that set up on the lower die joint of injection lower mould, it is a plurality of glue flowing grooves vertically and horizontally staggered sets up, will a plurality of lower mould lugs are cut apart into to the die joint down, glue flowing grooves with resin stores the chamber intercommunication, wherein, the glue flowing groove is last to have seted up down the mould injecting glue hole, down the mould injecting glue hole with injection module play jiao kou stop valve intercommunication, the die joint is down the injection lower mould with the face that the mould contacted in the injection.
Furthermore, the intersection of the middle die transverse rib and the middle die longitudinal rib is positioned in the end face range of the lower die convex block.
Further, the heat conduction structure includes a plurality of air channels that are provided with on the last die joint of mould on the injection, it is a plurality of air channel vertically and horizontally staggered sets up, will it cuts apart into a plurality of mould lugs to go up the die joint, the air channel with resin stores the chamber intercommunication, wherein, vacuum pipeline connecting hole and pressure pipeline connecting hole have been seted up on the air channel, vacuum pipeline connecting hole with vacuum pipeline stop valve intercommunication, pressure pipeline connecting hole with pressure pipeline stop valve intercommunication, it is for go up the die joint in the injection with the face that the mould contacted in the injection.
Furthermore, the intersection of the middle die transverse rib and the middle die longitudinal rib is positioned in the end surface range of the upper die convex block.
Furthermore, the forming mold glue outlet pipeline comprises a third branch pipe and a fourth branch pipe, the third branch pipe guides the resin in the inner cavity of the forming module to flow into the inner cavity of the glue sucking module, the fourth branch pipe guides the resin in the inner cavity of the forming module to flow out of a high-temperature environment, a forming module glue outlet stop valve is arranged at one end of the third branch pipe, which is connected with the forming module, a glue inlet stop valve of the glue sucking module is arranged at one end of the third branch pipe, a second resin collecting tank is connected with a pipe outlet of the fourth branch pipe, a second glue discharging valve is arranged on the fourth branch pipe, and a second vacuum source stop valve is arranged on a second vacuum pipeline communicated between the second resin collecting tank and a second vacuum source.
Further, the glue sucking module comprises a lower glue sucking module die and an upper glue sucking module die, and a glue sucking material is filled in an inner cavity of the glue sucking module; the glue sucking module is provided with a glue discharging pipe for guiding resin to flow into a third resin collecting tank outside a high-temperature environment, the glue discharging pipe is connected with one end of the glue sucking module and is provided with a glue discharging port stop valve of the glue sucking module, a third glue discharging valve is arranged on a pipeline close to the third resin collecting tank, and a third vacuum source stop valve is arranged on a third vacuum pipeline communicated between the third resin collecting tank and a third vacuum source.
The technical scheme of the invention has the following advantages: according to the invention, the resin injection device, the resin collection device and the molding module in the resin transfer molding process jointly form an integrated injection molding mold in the modes of the injection module and the glue absorption module, and the integrated injection molding mold is placed in a high-temperature curing environment box, the injection module and the glue absorption module are not required to be moved out after the injection process is finished, the injection process and the subsequent heating and curing process can be continuously carried out, namely, the injection module and the glue absorption module can carry out the curing process together with the molding module, so that the process continuity is ensured; after the curing process is finished, the cured resin residues in the glue injection module and the glue absorption cured materials in the glue absorption module can be treated according to solid waste, and the injection process is not required to be cleaned by using a chemical solvent and is environment-friendly.
Drawings
FIG. 1 is a schematic structural diagram of a composite material injection molding mold according to the present invention.
Fig. 2 is an assembly view of an injection module of the present invention.
Fig. 3 is a top view of a cavity surface of an injection lower mold according to the present invention.
Fig. 4 is a structural view of an injection molding die of the present invention.
FIG. 5 is a top view of a cavity surface of an injection upper mold of the present invention.
Fig. 6 is an assembled top view of an injection lower mold and an injection middle mold according to the present invention.
Fig. 7 is an assembled bottom view of an injection upper mold and an injection middle mold according to the present invention.
In the figure:
10. an injection module; 100. injecting a lower die; 100-1, sealing grooves of lower dies; 100-2, injecting glue into the lower die; 100-3, a lower parting surface; 100-4, lower die bumps; 100-5, a glue flowing groove; 110. injecting a middle mold; 110-1, a middle parting surface; 110-2, a middle mold sealing groove; 110-3, a resin storage cavity; 110-4, middle mold transverse ribs; 110-5, middle mold longitudinal ribs; 120. injecting an upper mold; 120-1, an upper parting surface; 120-2, an upper die bump; 120-3, a vent groove; 120-4, connecting holes of vacuum pipelines; 120-5, connecting holes of pressure pipelines; 130. bolt holes;
20. forming a module; 200. forming an upper die of the forming die module; 210. forming a lower die of the die module; 220. a fiber preform;
30. a glue sucking module; 300. a lower die of the glue sucking module; 310. an upper die of the glue sucking module; 320. a glue absorbing material;
40. a first vacuum source; 41. a first vacuum source shut-off valve; 42. a first vacuum line; 43. a vacuum pipeline stop valve;
50. a second vacuum source; 51. a second vacuum source shut-off valve; 52. a second vacuum line;
60. a third vacuum source; 61. a third vacuum source stop valve; 62. a third vacuum line;
70. a high pressure gas source; 71. a high-pressure gas source stop valve; 72. a high pressure gas line; 73. a pressure line stop valve;
80. a forming die glue injection pipeline; 80-1, a first branch pipe; 80-2, a second branch pipe; 80-3, forming the three-way connector of the glue injection pipeline of the forming die; 80-4, a first glue discharging valve; 80-5, a stop valve of a glue outlet of the injection module; 80-6, forming module glue inlet stop valve;
81. a glue outlet pipeline of the forming die; 81-1 third branch pipe; 81-2 and a fourth branch pipe; 81-3, forming a three-way connector of a glue outlet pipeline of the forming die; 81-4, a second glue discharging valve; 81-5, a stop valve of a glue outlet of the forming module; 81-6, a stop valve of a glue inlet of the glue sucking module;
82. placing a rubber tube; 82-1 and a third glue discharging valve; 82-2, a stop valve of a glue outlet of the glue sucking module;
83. a first resin collection tank; 84. a second resin collection tank; 85. a third resin collection tank;
90. and (5) a high-temperature curing environment box.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus are not to be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the following description, the up-middle-down, front-back, and left-right directions are shown with the direction in which the upper mold, middle mold, and lower mold of the injection mold are separated as the up-down direction. The up, middle, down, front, rear, and left and right directions shown below are for convenience of description, and the present invention is not necessarily applied to these directions. The number, shape, arrangement, and the like of the respective members are not necessarily limited to those shown in the drawings, and are applicable within a range not departing from the gist of the present invention.
First, a structure of a composite material injection molding die is explained (refer to fig. 1), including: an injection module 10, a molding module 20, and a glue suction module 30.
The injection module 10, the molding module 20 and the glue suction module 30 are used as a part of the structure of the composite material injection molding mold, the injection module 10 and the molding module 20 are connected with a molding mold glue injection pipeline 80, and the molding module 20 and the glue suction module 30 are connected with a molding mold glue outlet pipeline 81 to be assembled in the high-temperature curing environment box 90.
The molding glue injection pipeline 80 is used as a flow channel for resin to flow to the molding module 20 and flow out of the high-temperature curing environment box 90, and comprises a first branch pipe 80-1 for guiding the resin in the inner cavity of the injection module 10 to flow into the inner cavity of the molding module 20 and a second branch pipe 80-2 for guiding the resin in the inner cavity of the injection module 10 to flow out of the high-temperature environment (namely, the high-temperature curing environment box 90), so that after the injection process is finished, the residual resin in the injection module can flow out along the second branch pipe 80-2, and the occurrence of implosion of the resin accumulated in the injection module in the module temperature rising process is avoided.
One end of the first branch pipe 80-1 connected with the injection module 10 is provided with an injection module glue outlet stop valve 80-5, and one end of the connection type module 20 is provided with a molding module glue inlet stop valve 80-6. The outlet pipe orifice of the second branch pipe 80-2 is used for connecting the first resin collecting tank 83, and the second branch pipe 80-2 is provided with a first glue discharging valve 80-4; the injection module 10 is in communication with a high pressure gas source 70 via a high pressure gas line 72.
It can be understood that, when the vacuum pumping is performed, the glue outlet stop valve 80-5 of the injection module is closed, when the residual resin in the inner cavity of the injection module 10 is discharged, the glue inlet stop valve 80-6 of the molding module is closed, the first glue discharge valve 80-4 is opened, high-pressure gas is injected into the injection module 10 from the high-pressure gas source 70, and the residual resin in the injection module 10 is driven to flow out from the second branch pipe 80-2 and fall into the first resin collecting tank 83 outside the high-temperature curing environment box 90, so that the injection module 10 does not need to be moved out after the injection process is finished and the high-viscosity resin in the injection module 10 is cleaned, and the time for the split injection system to move out of the special resin injection device between the injection process and the curing process is saved.
In one example of the present embodiment, the molding compound injection pipeline 80 is composed of a three-way connector 80-3 and three branches.
As shown in fig. 1, the injection module 10 includes an upper injection mold 120, an intermediate injection mold 110, and a lower injection mold 100 that are separated in the vertical direction, and as shown in fig. 2, the upper injection mold 120, the intermediate injection mold 110, and the lower injection mold 100 are assembled and then fixed by fastening bolts inserted through bolt holes 130.
Fig. 3 to 5 are perspective views of the lower injection mold 100, the middle injection mold 110, and the upper injection mold 120, respectively.
As shown in fig. 3, the surface of the injection lower mold 100, which is in contact with the injection middle mold 110, is a lower parting surface 100-3 of the injection lower mold 100, the lower parting surface 100-3 is provided with glue flowing grooves 100-5 which are staggered transversely and longitudinally, the lower parting surface 100-3 is divided into a plurality of lower mold bumps 100-4, and the upper surface of the lower mold bump 100-4 is coplanar with the lower parting surface 100-3; the injection lower mold 100 has a lower mold injection hole 100-2 extending from an outer surface to a lower parting surface 100-3. As a preferred example of the present embodiment, the lower mold injection hole 100-2 is communicated with the runner 100-5 and is located at a middle position of the injection lower mold 100. It will be understood by those skilled in the art that the lower mold injection hole 100-2 is located at a middle area to allow the resin to be more uniformly distributed in the runner 100-5 after the resin is injected.
As shown in fig. 4, a surface of the injection middle mold 110, which is in contact with the injection upper mold 120, serves as a middle parting surface 110-1 of the injection middle mold 110, a middle mold transverse rib 110-4 and a middle mold longitudinal rib 110-5 are formed on a plate surface of the injection middle mold 110, the middle mold transverse rib 110-4 and the middle mold longitudinal rib 110-5 penetrate through the plate surface of the injection middle mold 110, and an internal cavity of the injection middle mold 110 is divided into a plurality of independent resin storage cavities 110-3; the middle mold transverse rib 110-4 and the middle mold longitudinal rib 110-5 are integrated with the surrounding parts, so that heat release of residual resin in the injection middle mold 110 during curing can be better guided out, and the resin is prevented from imploding.
As shown in fig. 5, the surface of the injection upper mold 120 contacting the injection middle mold 110 is used as an upper parting surface 120-1 of the injection upper mold 120, the upper parting surface 120-1 is provided with air grooves 120-3 which are staggered transversely and longitudinally, the air grooves 120-3 divide the upper parting surface 120-1 into a plurality of upper mold projections 120-2, and the upper surfaces of the upper mold projections 120-2 are coplanar with the upper parting surface 120-1; the injection upper mold 120 has a vacuum line connection hole 120-4 and a pressure line connection hole 120-5 extending from the outer surface to the upper parting surface 120-1, and as a preferred example of the present embodiment, the vacuum line connection hole 120-4 and the pressure line connection hole 120-5 are both in communication with the vent groove 120-3 and are located at an intermediate position of the injection upper mold 120.
A lower die sealing groove 100-1 is processed on a lower parting surface 100-3 of an injection lower die 100, a middle die sealing groove 110-2 is processed on a middle parting surface 110-1 of an injection middle die 110, and before die assembly, sealing strips are placed in the lower die sealing groove 100-1 and the middle die sealing groove 110-2 to ensure that the whole injection module 10 has good sealing performance.
As shown in FIG. 6, after the injection lower mold 100 and the injection middle mold 110 are assembled, the resin storage cavity 110-3 is communicated with the gummosis groove 100-5, and the projection position of the intersection of the middle mold transverse rib 110-4 and the middle mold longitudinal rib 110-5 on the lower parting plane 100-3 is positioned in the range of the lower mold convex block 100-4.
As shown in fig. 7, after the injection upper mold 120 and the injection middle mold 110 are assembled, the middle parting surface 110-1 is coplanar with the upper parting surface 120-1; the resin storage cavity 110-3 is communicated with the vent groove 120-3, and the projection position of the intersection of the middle mold transverse rib 110-4 and the middle mold longitudinal rib 110-5 on the upper parting surface 120-1 is positioned in the range of the upper mold convex block 120-2.
Because the curing reaction of the resin is an exothermic reaction, if a temperature reduction measure is not taken, the temperature can rise rapidly to cause implosion, and for this reason, the embodiment divides the inner cavity of the injection module 10 into a plurality of resin storage cavities 110-3 by adopting the integrated transverse and longitudinal ribs, so that the resin in the inner cavity of the injection module 10 can conduct heat uniformly in the whole injection process and the subsequent heating process and curing process, and the resin is prevented from being implosion. After the curing process is completed, the resin residue in the injection module 10 may be disposed of as solid waste.
Referring to fig. 1, the vacuum line connection hole 120-4 of the upper injection mold 120 is connected to the vacuum line stop valve 43, and the pressure line connection hole 120-5 is connected to the pressure line stop valve 73; the vacuum line stop valve 43 is communicated with the first vacuum source 40 through a first vacuum line 42, the first vacuum line 42 is provided with a first vacuum source stop valve 41 for controlling the opening degree of the first vacuum line 42, the pressure line stop valve 73 is communicated with the high-pressure gas source 70 through a high-pressure gas line 72, and the high-pressure gas line 72 is provided with a high-pressure gas source stop valve 71 for controlling the opening degree of the high-pressure gas line 72. The lower mold glue injection hole 100-2 of the injection lower mold 100 is connected with an injection module glue outlet stop valve 80-5, and the injection module glue outlet stop valve 80-5 is connected with a molding mold glue injection pipeline 80. And during vacuum pumping, the pressure pipeline stop valve 73 and the injection module glue outlet stop valve 80-5 are closed, and the first vacuum source stop valve 41 and the vacuum pipeline stop valve 43 are opened.
Furthermore, the molding module 20 includes an upper molding module mold 200 and a lower molding module mold 210, and a fiber preform 220 to be molded is accommodated in an inner cavity thereof. The lower molding module mold 210 is provided with a molding module glue inlet stop valve 80-6, a glue injection hole connected with the molding module glue inlet stop valve 80-6 is communicated with the inner cavity of the molding module 20, the upper molding module mold 200 is provided with a molding module glue outlet stop valve 81-5, and a glue outlet hole connected with the molding module glue outlet stop valve 81-5 is communicated with the inner cavity of the molding module 20.
The forming mold glue outlet pipeline 81 comprises a third branch pipe 81-1 for guiding the resin in the inner cavity of the forming module 20 to flow into the inner cavity of the glue sucking module 30 and a fourth branch pipe 81-2 for guiding the resin in the inner cavity of the forming module 20 to flow out of the high-temperature environment, one end of the third branch pipe 81-1, which is connected with the forming module 20, is communicated with a forming module glue outlet stop valve 81-5, one end of the third branch pipe 81-1, which is connected with the glue sucking module 30, is provided with a glue inlet stop valve 81-6 of the glue sucking module, a pipe outlet of the fourth branch pipe 81-2 is connected with a second resin collecting tank 84 outside the high-temperature curing environment box 90, the fourth branch pipe 81-2 is provided with a second glue discharging valve 81-4, and a second vacuum source stop valve 51 is arranged on a second vacuum pipeline 52 communicated between the second resin collecting tank 84 and the second vacuum source 50.
When the molding module 20 is vacuumized, the molding module glue inlet stop valve 80-6, the molding module glue outlet stop valve 81-5, the second glue release valve 81-4 and the second vacuum source stop valve 51 are opened, the injection module glue outlet stop valve 80-5, the first glue release valve 80-4 and the glue suction module glue inlet stop valve 81-6 are closed, and the molding module 20 is vacuumized through the second vacuum source 50.
Furthermore, the glue-suction module 30 is used for resin treatment and includes a lower glue-suction module 300 and an upper glue-suction module 310, and a glue-suction material 320 is filled in an inner cavity of the lower glue-suction module. The lower glue sucking module mold 300 is provided with a glue sucking module glue inlet stop valve 81-6, a glue injection hole connected with the glue sucking module glue inlet stop valve 81-6 is communicated with an internal cavity of the glue sucking module 30, the upper glue sucking module mold 310 is provided with a glue sucking module glue outlet stop valve 82-2, and a glue outlet hole connected with the glue sucking module glue outlet stop valve 82-2 is communicated with the internal cavity of the glue sucking module 30; a third glue discharging valve 82-1 is connected to the glue discharging pipe 82 between the glue outlet stop valve 82-2 of the glue sucking module and the third resin collecting tank 85, and a third vacuum source stop valve 61 is arranged on a pipeline which is communicated between the third resin collecting tank 85 and the third vacuum source 60 through a third vacuum pipeline 62.
When the glue sucking module 30 is vacuumized, the glue inlet stop valve 81-6 of the glue sucking module, the glue outlet stop valve 82-2 of the glue sucking module, the third glue discharging valve 82-1 and the third vacuum source stop valve 61 are opened, the glue outlet stop valve 81-5 of the molding module and the second glue discharging valve 81-4 are closed, and the glue sucking module 30 is vacuumized through the third vacuum source 60.
In at least one example of the glue-absorbing module 30, the optional glue-absorbing material 320 includes glass fiber cloth, chopped carbon fiber, glue-absorbing felt, etc., and after the curing is completed, the glue-absorbing material filled with the resin flowing out of the forming module 20 and cured can be taken out from the glue-absorbing module 30 and disposed as solid waste.
As at least one example of the first resin collection tank 83, the second resin collection tank 84, and the third resin collection tank 85, a disposable low-cost resin collection tank may be used as the collection tank; since most of the resin is absorbed and cured by the glue absorption module 30, and a small amount of residual resin is discharged from the injection module 10 after the injection process is finished, the second resin collection tank 84 and the third resin collection tank 85 may have a smaller capacity than the first resin collection tank 83 in the actual use process, which, of course, is not limited thereto.
It should be noted that the residual resin and a small amount of resin flowing out are collected by the first resin collecting tank 83, the second resin collecting tank 84 and the third resin collecting tank 85, when the resin is cleaned, the resin in the three groups of resin collecting tanks is poured into a special resin collecting barrel for centralized treatment, and then the inner surface is wiped clean by gauze soaked with solvent, so that the usage amount of the chemical solvent is greatly reduced compared with the cleaning of the injection device and the resin collecting device of the split injection system.
In an embodiment of the present application, a method of using a composite material injection mold is described as an example.
Referring to fig. 1, according to different requirements, the order of the steps of the present invention may be changed, and some steps may be omitted, and specifically, the present invention includes the following steps:
step S1, filling sealing strips in a lower mold sealing groove 100-1 of an injection module 10 and a middle mold sealing groove 110-2 of an injection module 20, fixing an injection upper mold 120, an injection middle mold 110 and the injection lower mold 100 through fastening bolts, opening a vacuum pipeline stop valve 43, closing a pressure pipeline stop valve 73, opening an injection module glue outlet stop valve 80-5, vacuumizing an inner cavity of the injection module 10, and sucking resin from the injection module glue outlet stop valve 80-5.
And S2, placing the molded fiber preform 220 into an inner cavity of the molding module 20, fixing the upper molding die module 200 and the lower molding die module 210 through fastening bolts, and sealing the upper molding die module 200 and the lower molding die module 210 by adopting a sealing strip.
And S3, placing the glue absorbing material 320 into an internal cavity of the glue absorbing module 30, fixing the lower glue absorbing module 300 and the upper glue absorbing module 310 through fastening bolts, and sealing the lower glue absorbing module 300 and the upper glue absorbing module 310 by using sealing strips.
And S4, connecting the molding module 20, the injection module 10 and the glue absorption module 30 through pipelines, putting the molding module, the injection module and the glue absorption module into a high-temperature curing environment box 90, and connecting external pipelines and valves of all the modules.
S5, closing the pressure pipeline stop valve 73 and the injection module glue outlet stop valve 80-5, opening the first vacuum source stop valve 41 and the vacuum pipeline stop valve 43, and performing vacuumizing and defoaming treatment on the resin in the injection module 10 through the first vacuum source 40; opening a molding module glue inlet stop valve 80-6, a molding module glue outlet stop valve 81-5, a second glue discharging valve 81-4 and a second vacuum source stop valve 51, closing an injection module glue outlet stop valve 80-5, a first glue discharging valve 80-4 and a glue sucking module glue inlet stop valve 81-6, and vacuumizing the molding module 20 through a second vacuum source 50; and opening the glue inlet stop valve 81-6 of the glue sucking module, the glue outlet stop valve 82-2 of the glue sucking module, the third glue discharging valve 82-1 and the third vacuum source stop valve 61, closing the glue outlet stop valve 81-5 of the forming module and the second glue discharging valve 81-4, and vacuumizing the glue sucking module 30 through the third vacuum source 60.
S6, closing the vacuum pipeline stop valve 43, the first glue discharging valve 80-4 and the glue sucking module glue inlet stop valve 81-6, opening the high-pressure air source stop valve 71, the pressure pipeline stop valve 73, the injection module glue outlet stop valve 80-5, the molding module glue inlet stop valve 80-6, the molding module glue outlet stop valve 81-5, the second glue discharging valve 81-4 and the second vacuum source stop valve 51, and injecting high-pressure air driving resin into the injection module 10 from the high-pressure air source 70.
And S7, when the resin flows out of the second glue discharging valve 81-4, closing the second glue discharging valve 81-4, opening the glue inlet stop valve 81-6 of the glue sucking module, the glue outlet stop valve 82-2 of the glue sucking module, the third glue discharging valve 82-1 and the third vacuum source stop valve 61, and continuing to inject the resin.
And S8, when the resin flows out of the third glue discharging valve 82-1, closing the third glue discharging valve 82-1, the molding module glue inlet stop valve 80-6, the molding module glue outlet stop valve 81-5, the glue sucking module glue inlet stop valve 81-6 and the glue sucking module glue outlet stop valve 82-2, and finishing the resin injection process.
Step S9, opening the high-pressure air source stop valve 71, the pressure pipeline stop valve 73 and the first glue discharging valve 80-4, closing the vacuum pipeline stop valve 43 and the molding module glue inlet stop valve 80-6, pumping high-pressure air into the high-pressure air source 70 to discharge residual resin in the glue injection module 10, closing the pressure pipeline stop valve 73 after glue discharging, closing the injection module glue outlet stop valve 80-5 and the first glue discharging valve 80-4 when the pressure in the injection module 10 is consistent with the ambient air pressure, opening the first vacuum source stop valve 41 and the vacuum pipeline stop valve 43, and vacuumizing the injection module 10.
And S10, raising the temperature in the high-temperature curing environment box 90, and performing a mold heating process, wherein the injection module 10 is vacuumized in the whole process in the heating process.
And S11, starting a curing process after the molding module 20 reaches the curing temperature, and simultaneously performing the curing process on the glue injection module 10, the glue absorption module 30 and the molding module 20.
And S12, cooling after the curing process is finished, removing pipelines connected with the glue injection module 10, the glue suction module 30 and the molding module 20 after cooling is finished, and taking out the workpieces from the molding module 20.
And S13, removing the glue absorption module 30, taking out the glue absorption condensate, and treating according to the solid waste.
And S14, removing the glue injection module 10, cleaning the resin residues solidified on the surface of the inner cavity of the glue injection module 10, and treating the resin residues according to solid wastes.
The injection device and the resin collecting device are combined with the molding module 20 in the mode of the glue injection module 10 and the glue suction module 30 to form an integrated mold and are simultaneously placed into the high-temperature curing environment box 90, the injection process and the curing process can be continuously carried out, the injection module 10 and the glue suction module 30 can be cured together with the molding module 20, and the time for the split type injection system to move out of the special resin injection device between the injection process and the curing process is saved. The injection module 10 is constructed by using a plurality of resin storage chambers 110-3 formed by transverse and longitudinal ribs, which can uniformly dissipate heat and prevent implosion. The injection module 10 and the glue absorption module 30 do not need to be cleaned by using a solvent after the curing process is finished, so that the cost of environmental management is reduced.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A composite injection mold, comprising: the injection molding device comprises an injection module, a molding module and a glue sucking module, wherein the injection module and the molding module are connected with a molding die glue injection pipeline, the molding module and the glue sucking module are connected with a molding die glue outlet pipeline, the molding die glue injection pipeline comprises a first branch pipe and a second branch pipe, the first branch pipe guides resin in an inner cavity of the injection module to flow into an inner cavity of the molding module, the second branch pipe guides resin in the inner cavity of the injection module to flow out of a high-temperature environment, one end, connected with the injection module, of the first branch pipe is provided with an injection module glue outlet stop valve, one end, connected with the molding module, of the first branch pipe is provided with a molding module glue inlet stop valve, a pipe outlet of the second branch pipe is used for connecting a first resin collecting tank, and the second branch pipe is provided with a first glue discharging valve; the injection module is communicated with the high-pressure gas source through a high-pressure gas pipeline.
2. The composite material injection mold according to claim 1, wherein the injection module is connected to a first vacuum source through a first vacuum pipeline, a first vacuum source stop valve is arranged at one end of the first vacuum pipeline connected to the first vacuum source, and a vacuum pipeline stop valve is arranged at one end of the first vacuum pipeline connected to the injection module; the high-pressure gas pipeline is connected with a high-pressure gas source stop valve is arranged at one end of the high-pressure gas source, and a pressure pipeline stop valve is arranged at one end of the injection module.
3. A composite material injection molding apparatus as claimed in claim 1 wherein the cavity of the injection module is provided with a thermally conductive structure for the cavity resin.
4. The mold of claim 3, wherein the injection module comprises a lower injection mold, a middle injection mold and an upper injection mold, the heat conducting structure comprises a middle mold transverse rib and a middle mold longitudinal rib formed on the surface of the middle injection mold, and the middle mold transverse rib and the middle mold longitudinal rib penetrate through the surface of the middle injection mold to divide the middle injection mold into a plurality of independent resin storage cavities.
5. The composite material injection mold according to claim 4, wherein the heat conducting structure comprises a plurality of glue grooves formed on a lower parting surface of the lower injection mold, the glue grooves are arranged in a criss-cross manner to divide the lower parting surface into a plurality of lower mold bumps, the glue grooves are communicated with the resin storage cavity, the glue grooves are provided with lower mold glue injection holes, the lower mold glue injection holes are communicated with the injection module glue outlet stop valve, and the lower parting surface is a surface of the lower injection mold, which is in contact with the middle injection mold.
6. The composite material injection molding die of claim 5, wherein the junction of the middle mold transverse rib and the middle mold longitudinal rib is located within an end face of the lower mold projection.
7. The composite material injection mold according to claim 4, wherein the heat conducting structure comprises a plurality of vent grooves formed on an upper parting surface of the injection upper mold, the vent grooves are arranged in a criss-cross manner to divide the upper parting surface into a plurality of upper mold protrusions, the vent grooves are communicated with the resin storage cavity, wherein the vent grooves are formed with vacuum line connecting holes and pressure line connecting holes, the vacuum line connecting holes are communicated with the vacuum line stop valve, the pressure line connecting holes are communicated with the pressure line stop valve, and the upper parting surface is a surface of the injection upper mold contacting the injection middle mold.
8. The composite material injection mold of claim 7, wherein the intersection of the middle mold transverse rib and the middle mold longitudinal rib is located within an end face of the upper mold projection.
9. A composite material injection molding mold according to claim 1, wherein the molding die glue outlet line comprises a third branch pipe for guiding the resin in the molding die cavity to flow into the glue suction die cavity and a fourth branch pipe for guiding the resin in the molding die cavity to flow out of the high temperature environment, the third branch pipe is provided with a molding die glue outlet stop valve at one end connected with the molding die, the end connected with the glue suction die is provided with a glue inlet stop valve of the glue suction die, the outlet of the fourth branch pipe is connected with the second resin collection tank, the fourth branch pipe is provided with a second glue discharge valve, and the second vacuum pipe communicated between the second resin collection tank and the second vacuum source is provided with a second vacuum source stop valve.
10. The composite material injection molding mold according to claim 1, wherein the glue suction module comprises a lower glue suction module mold and an upper glue suction module mold, and a glue suction material is filled in an inner cavity of the glue suction module; the glue sucking module is provided with a glue discharging pipe for guiding resin to flow into a third resin collecting tank outside a high-temperature environment, the glue discharging pipe is connected with one end of the glue sucking module and is provided with a glue discharging port stop valve of the glue sucking module, a third glue discharging valve is arranged on a pipeline close to the third resin collecting tank, and a third vacuum source stop valve is arranged on a third vacuum pipeline communicated between the third resin collecting tank and a third vacuum source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211460552.1A CN115709547A (en) | 2022-11-17 | 2022-11-17 | Composite material injection molding die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211460552.1A CN115709547A (en) | 2022-11-17 | 2022-11-17 | Composite material injection molding die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115709547A true CN115709547A (en) | 2023-02-24 |
Family
ID=85234479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211460552.1A Pending CN115709547A (en) | 2022-11-17 | 2022-11-17 | Composite material injection molding die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115709547A (en) |
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2022
- 2022-11-17 CN CN202211460552.1A patent/CN115709547A/en active Pending
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