CN220517606U - Auxiliary heating structure of RTM mould - Google Patents
Auxiliary heating structure of RTM mould Download PDFInfo
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- CN220517606U CN220517606U CN202322140345.4U CN202322140345U CN220517606U CN 220517606 U CN220517606 U CN 220517606U CN 202322140345 U CN202322140345 U CN 202322140345U CN 220517606 U CN220517606 U CN 220517606U
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Abstract
The application discloses auxiliary heating structure of RTM mould relates to resin matrix composite former technical field. The auxiliary heating structure comprises: the mould body, the mould body includes: the core mold is provided with an installation space; the oil core is arranged in the installation space, and the outer wall of the oil core is contacted with the inner wall surface of the installation space; the oil guide groove is formed on the oil core, and the notch of the oil guide groove faces the inner wall of the installation space; the oil guide groove and the inner wall of the installation space jointly form an oil guide pipeline; one end of the oil guide pipeline is provided with an oil inlet nozzle which is used for being connected with an oil outlet end of the oil warming machine; the other end of the oil guide pipeline is provided with an oil outlet nozzle which is used for being connected with the oil inlet end of Wen Youji. According to the method, the oil guide pipeline is arranged in the installation space, the heating effect is guaranteed, the number of external pipelines of the RTM die is reduced to the greatest extent, the operation space around the RTM die is enlarged, and the follow-up demolding operation is more convenient.
Description
Technical Field
The application relates to the technical field of resin matrix composite molding equipment generally, and in particular relates to an auxiliary heating structure of an RTM (resin transfer molding) die.
Background
Resin transfer molding (Resin Transfer Moulding, RTM for short) is one of the main molding processes for glass fiber reinforced plastics (Fiberglass Reinforced Plastic, FRP). RTM is a composite material production process in which a reinforcing fabric is placed in a mold to form a certain shape, and then resin is injected into the mold, impregnated with fibers and cured. RTM is a closed-mold operating system, and is characterized by small pollution, and in addition, the RTM is superior to jin-shaped molding compounds (Sheet Molding Compounds, SMC) and bulk molding compounds (Bulk Molding Compound, BMC) in the aspects of product designability, directionality enhancement and product comprehensive performance.
At present, in the process of heating, curing and forming, a curing furnace or an oil warming machine is generally adopted to heat the glue solution raw material in the RTM mold cavity, so that the glue solution raw material is cured to form a composite material product. However, before Wen Youji is used for heating, drilling holes are needed to be formed in the existing die plate, and then an oil pipe is arranged and connected with Wen Youji by the oil pipe; because the specifications of different dies are different, the number and layout of the used oil pipes are different, when the internal space of some die cavities is large, the number and layout of the oil pipes are the most complex, and if only a small amount of oil pipes are used and the layout is sparse, the curing molding efficiency and the product quality can be directly affected. Therefore, we propose an auxiliary heating structure of RTM mold to solve the above problems.
Disclosure of Invention
In view of the above-mentioned drawbacks or shortcomings in the prior art, it is desirable to provide an auxiliary heating structure of an RTM mold that improves molding efficiency and product quality, is easy to assemble and disassemble, has an attractive structure, and is easy to implement.
The application provides an auxiliary heating structure of RTM mould, include:
a mold body, the mold body comprising: a core mold having an installation space;
the oil core is arranged in the installation space, and the outer wall of the oil core is in contact with the inner wall surface of the installation space;
the oil guide groove is formed in the oil core, and the notch of the oil guide groove faces the inner wall of the installation space; the oil guide groove and the inner wall of the installation space jointly form an oil guide pipeline;
one end of the oil guide pipeline is provided with an oil inlet nozzle which is used for being connected with an oil outlet end of the oil warming machine; the other end of the oil guide pipeline is provided with an oil outlet nozzle which is used for being connected with the oil inlet end of Wen Youji.
According to the technical scheme that this application provided, the oil guide recess has:
the first groove section and the second groove section are arranged on the side wall of the oil core, and the first groove section and the second groove section are coiled on the side wall of the oil core in parallel;
the third groove section is arranged at the top of the oil core; one end of the third groove section is communicated with the first groove section, and the other end of the third groove section is communicated with the second groove section.
According to the technical scheme that this application provided, the mould body still includes:
the bottom plate is connected with the core die and the bottom of the oil core;
and the outer die is sleeved on the core die, and a forming cavity is formed between the outer die and the core die and between the outer die and the bottom plate.
According to the technical scheme provided by the application, an injection port is further formed in one side, far away from the bottom plate, of the forming cavity, and the injection port is communicated with the forming cavity; and a cover plate is arranged at the injection opening.
According to the technical scheme that this application provided, still offer two respectively corresponding on the bottom plate the oil feed nozzle with go out the through-hole that the oil feed nozzle set up, the through-hole is used for holding correspondingly advance oil feed nozzle or go out the oil feed nozzle and run through.
According to the technical scheme provided by the application, the bottom plate with the mandrel the contact department of oil core is provided with sealed pad.
According to the technical scheme that this application provided, the mould body still includes: an auxiliary demolding assembly;
the auxiliary stripping assembly includes:
the ejection piece is positioned at one side of the forming cavity close to the bottom plate; the ejection piece is contacted with the outer die, the bottom plate and the core die surface;
the driving piece is arranged on one side, far away from the core die, of the bottom plate, and the driving end of the driving piece penetrates through the bottom plate and is connected with the ejection piece;
when the driving end moves, the ejection piece is driven to move along a first direction; the first direction is parallel to the central axis of the bottom plate.
In summary, the application discloses a specific structure of an auxiliary heating structure of an RTM mold. In this application, the mould body includes the mandrel, and the mandrel has the installation space to be provided with the oil core in the installation space, the outer wall of oil core and the inside face contact of installation space have still been seted up on the oil core and have been led oily recess, and its notch direction sets up towards installation space inner wall, leads oily recess and installation space inner wall and forms the oil guide pipeline jointly, and further, oil guide pipeline one end is equipped with the glib talker, and its other end is equipped with the glib talker. When the heating oil is used, the oil inlet nozzle is connected with the oil outlet end of the oil warming machine, the oil outlet nozzle is connected with the oil inlet end of the Wen Youji, heating oil in the oil warming machine enters the oil guide pipeline through the oil outlet end and the oil inlet nozzle, the heating oil flows in the oil guide pipeline, and returns to Wen Youji from the oil outlet nozzle and the oil inlet end until the glue solution raw material in the RTM die is heated and solidified and then is formed, and heating is stopped.
Compared with the existing mode that all heating pipelines are arranged on the surface of the RTM die, the oil guide pipeline is built in the installation space, the heating effect is guaranteed, the number of external pipelines of the RTM die is reduced to the greatest extent, the operation space around the RTM die is enlarged, and the follow-up demoulding operation is more convenient.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the detailed description of non-limiting embodiments made with reference to the following drawings.
Fig. 1 is a schematic structural diagram of an auxiliary heating structure of an RTM mold.
Fig. 2 is a schematic diagram of the structure of the oil core.
Reference numerals in the drawings: 1. a core mold; 2. an oil core; 3. an oil guiding groove; 4. an oil inlet nozzle; 5. an oil outlet nozzle; 6. a bottom plate; 7. an outer mold; 8. a molding cavity; 9. a cover plate; 10. an ejector; 11. a first groove section; 12. a second groove segment; 13. and a third groove segment.
Detailed Description
The present application is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting of the utility model. It should be noted that, for convenience of description, only the portions related to the utility model are shown in the drawings.
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Example 1
Referring to fig. 1, a schematic structural diagram of a first embodiment of an auxiliary heating structure of an RTM mold provided in the present application includes:
the mould body, the mould body includes: a core mold 1, the core mold 1 having an installation space;
as shown in fig. 1, both the core mold 1 and the installation space are of a cylindrical structure; the installation space is an inner space of an installation groove formed in the core mold 1, and is used for accommodating the oil core 2.
The oil core 2 is arranged in the installation space, and the outer wall of the oil core 2 is in contact with the inner wall surface of the installation space;
the oil core 2 is of a cylindrical structure, the shape of the oil core 2 is matched with that of the installation space, the side wall of the oil core 2 can be tightly contacted with the inner wall of the installation space, and the probability that heating oil overflows from a gap between the oil core 2 and the installation space is reduced.
The oil guide groove 3 is formed in the oil core 2, and the notch of the oil guide groove 3 faces the inner wall of the installation space; the oil guide groove 3 and the inner wall of the installation space jointly form an oil guide pipeline;
specifically, as shown in fig. 2, the oil guide groove 3 has:
the first groove section 11 and the second groove section 12 are arranged on the side wall of the oil core 2, and the first groove section 11 and the second groove section 12 are spirally arranged;
in order to enable the oil guiding groove 3 to form a through groove structure, the distribution mode of the first groove section 11 and the second groove section 12 on the side wall of the oil core 2 is consistent, as shown in fig. 1, the first groove section 11 and the second groove section are coiled on the side wall of the oil core 2 in parallel.
The third groove section 13 is arranged at the top of the oil core 2, and the third groove section 13 is arranged at the top of the oil core 2; one end of the third groove section 13 communicates with the first groove section 11, and the other end communicates with the second groove section 12.
Wherein the third groove segment 13 serves as a connecting medium for connecting the first groove segment 11 and the second groove segment 12.
One end of the oil guide pipeline is provided with an oil inlet nozzle 4, and the oil inlet nozzle 4 is used for being connected with an oil outlet end of the oil warming machine; the other end of the oil guide pipeline is provided with an oil outlet nozzle 5, and the oil outlet nozzle 5 is used for being connected with the oil inlet end of Wen Youji.
As shown in fig. 1, the oil inlet nozzle 4 and the oil outlet nozzle 5 are positioned at the bottom of the oil core 2; assume that: the free end of the first groove section 11 is relatively close to the nozzle tip 4 and the free end of the second groove section 12 is relatively close to the nozzle tip 5. When the oil inlet nozzle 4 is connected with the oil outlet end of the oil warming machine through the connecting pipe, and the oil outlet nozzle 5 is connected with the oil inlet end of the Wen Youji through the connecting pipe, heating oil in Wen Youji enters the oil inlet nozzle 4 through the connecting pipe, then the heating oil ascends along a section of the first groove section 11 where the oil guiding pipeline is located in a spiral manner, then the heating oil reaches a section of the third groove section where the oil guiding pipeline is located, so that the heating oil is transited to a section of the second groove section where the oil guiding pipeline is located, the heating oil continuously flows, and finally returns to the oil warming machine through the oil inlet ends of the oil outlet nozzles 5 and Wen Youji.
Compared with the prior art that all heating pipelines are arranged on the surface of an RTM (room temperature vulcanized) die, the oil core 2 is designed in the installation space of the core die 1, an oil guide pipeline is formed between the oil guide groove 3 on the oil core 2 and the inner wall of the installation space, the pipeline is arranged in the installation space of the core die 1, the heating effect is ensured, the number of the external pipelines of the RTM die is reduced to the greatest extent, the operation space around the RTM die is enlarged, and the subsequent demolding operation is more convenient. And the oil guide pipelines are uniformly distributed on the side wall of the oil core 2 in a spiral form, so that the heating area of the oil guide pipelines can be maximized, and meanwhile, the glue solution raw materials in the RTM die are uniformly heated, so that a composite material product meeting the quality requirement is finally obtained.
Further, as shown in fig. 1, the mold body further includes:
the bottom plate 6 is connected with the bottom of the core mould 1 and the bottom of the oil core 2;
wherein the bottom plate 6 is used as a basic bearing plate for installing the core mould 1 and the oil core 2; here, the connection means of the base plate 6 and the core mold 1 or the oil core 2 is, for example, bolt connection, that is, the base plate 6 and the core mold 1 or the oil core 2 are connected by screws.
And, the contact department of bottom plate 6 and mandrel 1, oily core 2 is provided with sealed pad, plays sealed effect to corresponding contact position, prevents that heating oil from leaking from certain gap, pollutes the goods, influences the goods quality.
The outer mold 7 is sleeved on the core mold 1, and a forming cavity 8 is formed between the outer mold 7, the core mold 1 and the bottom plate 6.
Wherein, the outer mold 7 and the core mold 1 need to be matched for use, specifically, before the composite material product is manufactured, the outer mold 7 is sleeved on the core mold 1, a forming cavity 8 is formed before the outer mold 7 and the core mold 1, glue solution raw materials are contained by the forming cavity 8, and after corresponding working procedures, the composite material product is finally obtained; after the article has been formed,
here, when external mold 7 cover is on mandrel 1, can utilize the screw to link up external mold 7 border and bottom plate 6, can let external mold 7's position more stable, avoid in the course of the preparation, dislocation problem appears in external mold 7 to influence the quality of final goods.
Further, as shown in fig. 1, an injection port is further formed on one side of the molding cavity 8 away from the bottom plate 6, and the injection port is communicated with the molding cavity 8, so that glue solution raw materials are conveniently injected into the molding cavity 8 from the injection port; the injection opening is provided with a cover plate 9, and after the glue solution raw material is injected into the forming cavity 8, the injection opening can be sealed by the cover plate 9, so that the forming cavity 8 is relatively sealed for subsequent process operation.
Further, two through holes which are respectively corresponding to the oil inlet nozzle 4 and the oil outlet nozzle 5 are formed in the bottom plate 6, the through holes are used for accommodating the corresponding oil inlet nozzle 4 or the corresponding oil outlet nozzle 5 to penetrate, the oil inlet nozzle 4 or the corresponding oil outlet nozzle 5 can be exposed, and the oil inlet nozzle 4 or the corresponding oil outlet nozzle 5 can be conveniently connected with an oil warming machine.
Further, the mold body further includes: the auxiliary demolding assembly is used for assisting in demolding of the product after the product is molded;
specifically, the auxiliary demolding assembly includes:
an ejector 10, the ejector 10 is positioned at one side of the molding cavity 8 close to the bottom plate 6; the ejector 10 is in surface contact with the outer die 7, the bottom plate 6 and the core die 1;
as shown in fig. 1, the ejector 10 is an integrally formed structure, and a longitudinal section of the ejector 10 is L-shaped; the ejector 10 includes: the first ejection section and the second ejection section are vertically connected, the first ejection section can be in contact with the side wall of the core mold 1 and the inner wall surface of the outer mold 7, and the second ejection section can be in contact with the bottom plate 6 and the bottom surface of the outer mold 7; when the outer mold 7 is fitted over the core mold 1, the surface of the first ejector section parallel to the bottom plate 6 serves as the bottom surface of the molding cavity 8.
The driving piece is arranged on one side of the bottom plate 6 far away from the core mould 1, and the driving end of the driving piece penetrates through the bottom plate 6 and is connected with the ejection piece 10;
when the driving end moves, the ejector 10 is driven to move along the first direction; the first direction is arranged parallel to the central axis of the bottom plate 6.
Here, driving members, which are well known to those skilled in the art, can drive the ejector 10 to move. For example, the driving member is an electric push rod; the number of the electric push rods is two, one end of each electric push rod penetrates through the bottom plate 1 and is connected with the second ejection section of the ejection piece 10, and the other end of each electric push rod is connected with the driving shaft of the driving cylinder; after the product is molded, the product and the side wall of the core mold are stuck together, at the moment, the driving cylinder is started to drive the electric push rod to move along the first direction so as to push the ejection piece 10 to move, the ejection piece 10 pushes the molded product to move along the first direction, the contact area of the molded product and the core mold 1 is gradually reduced, and finally, the molded product and the core mold 1 are completely separated, so that the purpose of assisting the smooth demolding of the product is realized.
The auxiliary heating structure is mainly applied to a heating curing forming process of an RTM mold, and the specific working process is as follows:
firstly, the oil inlet nozzle 4 is connected with the oil outlet end of the oil warming machine by using a connecting pipe, and the oil inlet ends of the oil outlet nozzle 5 and the oil inlet end of the oil warming machine Wen Youji are connected by using two connecting pipes, so that the connection relation between Wen Youji and the RTM mould can be established by using the two connecting pipes, and the assembly operation of equipment can be completed rapidly; then, starting Wen Youji, heating oil enters the oil guide pipeline through the oil outlet end, the connecting pipe and the oil inlet nozzle 4, according to the layout form of the oil guide pipeline, the heating oil firstly spirally reaches the section of the oil guide pipeline positioned at the top of the oil core 2 from bottom to top, then spirally reaches the oil outlet nozzle 5 from top to bottom, finally returns to Wen Youji through the oil inlet end of the connecting pipe, after the product is molded, closing Wen Youji, and then detaching the two connecting pipes, thus the detaching operation of the equipment can be rapidly completed.
The foregoing description is only of the preferred embodiments of the present application and is presented as a description of the principles of the technology being utilized. It will be appreciated by persons skilled in the art that the scope of the utility model referred to in this application is not limited to the specific combinations of features described above, but it is intended to cover other embodiments in which any combination of features described above or equivalents thereof is possible without departing from the spirit of the utility model. Such as the above-described features and technical features having similar functions (but not limited to) disclosed in the present application are replaced with each other.
Claims (7)
1. An auxiliary heating structure of an RTM die, comprising:
a mold body, the mold body comprising: a core mold (1), the core mold (1) having an installation space;
the oil core (2) is arranged in the installation space, and the outer wall of the oil core (2) is in contact with the inner wall surface of the installation space;
the oil guide groove (3) is formed in the oil core (2), and the notch of the oil guide groove (3) faces the inner wall of the installation space; the oil guide groove (3) and the inner wall of the installation space jointly form an oil guide pipeline;
one end of the oil guide pipeline is provided with an oil inlet nozzle (4), and the oil inlet nozzle (4) is used for being connected with an oil outlet end of the oil warming machine; the other end of the oil guide pipeline is provided with an oil outlet nozzle (5), and the oil outlet nozzle (5) is connected with the oil inlet end of Wen Youji.
2. An auxiliary heating structure of an RTM die according to claim 1, characterized in that the oil guiding groove (3) has:
the first groove section (11) and the second groove section (12) are arranged on the side wall of the oil core (2); the first groove section (11) and the second groove section (12) are spirally arranged, and the first groove section (11) and the second groove section (12) are coiled on the side wall of the oil core (2) in parallel;
the third groove section (13), the third groove section (13) is arranged at the top of the oil core (2); one end of the third groove section (13) is communicated with the first groove section (11), and the other end of the third groove section is communicated with the second groove section (12).
3. The auxiliary heating structure of an RTM mold according to claim 1, wherein the mold body further comprises:
the bottom plate (6), the said bottom plate (6) is connected with said mandrel (1) and said oil core (2) bottom;
the outer die (7) is sleeved on the core die (1), and a forming cavity (8) is formed between the outer die (7) and the core die (1) and between the outer die and the bottom plate (6).
4. An auxiliary heating structure of an RTM mold according to claim 3, characterized in that the side of the molding cavity (8) far from the bottom plate (6) is further provided with an injection port, and the injection port is communicated with the molding cavity (8); the filling opening is provided with a cover plate (9).
5. An auxiliary heating structure of an RTM mold according to claim 3, characterized in that the bottom plate (6) is further provided with two through holes respectively corresponding to the oil inlet nozzle (4) and the oil outlet nozzle (5), and the through holes are used for accommodating the corresponding oil inlet nozzle (4) or the oil outlet nozzle (5) to penetrate.
6. An auxiliary heating structure of an RTM die according to claim 3, characterized in that a gasket is provided at the contact of the bottom plate (6) with the core die (1) and the oil core (2).
7. An auxiliary heating structure for an RTM mold according to any one of claims 3 to 6, wherein the mold body further comprises: an auxiliary demolding assembly;
the auxiliary stripping assembly includes:
the ejection piece (10), the said ejection piece (10) locates at one side that the said shaping cavity (8) approaches the said bottom plate (6); the ejection piece (10) is in surface contact with the outer die (7), the bottom plate (6) and the core die (1);
the driving piece is arranged on one side, far away from the core mould (1), of the bottom plate (6), and the driving end of the driving piece penetrates through the bottom plate (6) and is connected with the ejection piece (10);
when the driving end moves, the ejection piece (10) is driven to move along a first direction; the first direction is arranged parallel to the central axis of the bottom plate (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322140345.4U CN220517606U (en) | 2023-08-09 | 2023-08-09 | Auxiliary heating structure of RTM mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322140345.4U CN220517606U (en) | 2023-08-09 | 2023-08-09 | Auxiliary heating structure of RTM mould |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220517606U true CN220517606U (en) | 2024-02-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322140345.4U Active CN220517606U (en) | 2023-08-09 | 2023-08-09 | Auxiliary heating structure of RTM mould |
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| CN (1) | CN220517606U (en) |
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2023
- 2023-08-09 CN CN202322140345.4U patent/CN220517606U/en active Active
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