Self-heating special-shaped composite shell RTM forming die

Abstract

The utility model provides a self-heating special-shaped composite shell RTM forming die which comprises an upper die, a lower die matched with the upper die is arranged on the lower side of the upper die, and an end baffle used for dispersing materials is installed on the side, close to a sprue inlet adapter, in a die cavity formed by the upper die and the lower die. A core mold assembly which is matched with the end baffle and used for supporting the special-shaped composite shell is arranged in a mold cavity formed by the upper mold and the lower mold, a plurality of upper thermocouples and a plurality of upper heating rods are evenly installed in the upper mold, and two upper aviation plugs electrically connected with the upper thermocouples are installed on the face, provided with the sprue inlet adapter, of the upper mold. A plurality of lower thermocouples and a plurality of lower heating rods are installed in the lower die, and two lower aviation plugs electrically connected with the lower thermocouples are installed on the face, close to the upper aviation plug, of the lower die.

Description

TECHNICAL FIELD

[0001] The utility model relates to a self -heating special -shaped composite shell RTM forming die belongs to mould field. BACKGROUND

[0002] RTM (Resin Transfer Molding, resin transfer molding) is a kind of composite material forming process, it is formed by injecting liquid resin into closed mould under certain temperature and pressure Solidification forms final product. Figure 14 For special-shaped composite shell RTM forming die in the use process, need to utilize hot press tank to special-shaped composite shell RTM forming die is heated and pressurized, this kind of mode needs to frequently shift the position of special-shaped composite shell RTM forming die, it is inconvenient to use, so need to design a kind to be realized heating and pressurization without entering hot press tank Self-heating special-shaped composite shell RTM forming die. UTILITY MODEL CONTENTS

[0003] In view of the deficiencies in the prior art, the utility model aims to provide a self-heating special-shaped composite shell RTM forming die to solve the problems in the background art, which realizes heating and pressurization without entering a hot press tank, improving the convenience of use.

[0004] To achieve the above object, the utility model is realized through the following technical scheme: a self-heating special-shaped composite shell RTM forming die, including upper die, the lower side of the upper die is equipped with the lower die that is matched with the upper die, the side surface of the lower die is installed with the pouring port adapter that is communicated with the lower die and the upper die and forms the mold cavity, the side of the mold cavity formed by the upper die and the lower die is installed with the end baffle for dispersing material close to the pouring port adapter, the mold cavity formed by the upper die and the lower die is equipped with the core mold assembly for supporting the special-shaped composite shell matched with the end baffle, the side of the upper die away from the pouring port adapter is installed with two discharge port adapters that are communicated with the lower die and the upper die and form the mold cavity, a plurality of upper thermocouples and a plurality of upper heating rods are evenly installed in the upper die, the upper heating rod is electrically connected with the upper thermocouple, the side of the upper die where the pouring port adapter is installed is installed with two upper aviation plugs electrically connected with the upper thermocouple, a plurality of lower thermocouples and a plurality of lower heating rods are installed in the lower die, the lower thermocouple is electrically connected with the lower heating rod, the side of the lower die close to the upper aviation plug is installed with two lower aviation plugs electrically connected with the lower thermocouple.

[0005] Further, the bottom of the lower die is installed with detachable base, the lower surface of the lower die is recessed upwards to form the lower wiring groove for wiring, the upper wiring groove is installed with detachable cover plate on the two parallel sides of the upper die and the side of the upper die where the upper aviation plug is installed.

[0006] Furthermore, the core mold assembly includes a first core mold, a second core mold is provided on one side of the first core mold to fit with the first core mold, a fourth core mold is provided on the lower side of the first core mold to fit with the first core mold, a third core mold is provided on the lower side of the second core mold to fit with the first and fourth core molds, a fifth core mold is provided on the end of the first core mold away from the end baffle to fit with the first and fourth core molds, and a sixth core mold is provided on the end of the second core mold away from the end baffle to fit with the second and fifth core molds.

[0007] Furthermore, two first screw holes are provided on the side of the end baffle facing the upper mold, and second screw holes are provided on the side of the first core mold, the second core mold, the third core mold, the fourth core mold, the fifth core mold, and the sixth core mold facing the end baffle.

[0008] Furthermore, a side of the end baffle facing away from the inlet gate adapter is recessed to form a material distribution trough, and a side of the end baffle facing the inlet gate adapter is provided with a plurality of connecting holes communicating with the material distribution trough.

[0009] Furthermore, removable epoxy resin insulation boards are installed on the surrounding surfaces of the upper mold and the surrounding surfaces of the lower mold, upper anti-collision protection blocks are provided on both sides of the upper aviation plug and are connected and fixed to the upper mold, and lower anti-collision protection blocks are provided on both sides of the lower aviation plug and are connected and fixed to the lower mold, and a protective plate is installed between the two upper anti-collision protection blocks, and the protective plate is arranged on the side of the upper anti-collision protection block away from the lower anti-collision protection block.

[0010] Beneficial effects of the utility model:

[0011] 1. Install multiple upper thermocouples and multiple upper heating rods in the upper mold, and electrically connect the upper thermocouples to the upper heating rods and the upper aviation plugs; install multiple lower thermocouples and multiple lower heating rods in the lower mold, and electrically connect the lower thermocouples to the lower aviation plugs and the lower heating rods. When power is turned on, the lower heating rods and the upper heating rods heat and pressurize the special-shaped composite shell raw materials in the mold cavity formed by the upper mold and the lower mold, and heating and pressurizing are achieved without entering the autoclave, thereby improving the convenience of use.

[0012] 2. A core mold assembly is formed by combining the first core mold, the second core mold, the third core mold, the fourth core mold, the fifth core mold, and the sixth core mold, so that the core mold assembly forms a block structure. The first core mold, the second core mold, the third core mold, the fourth core mold, the fifth core mold, and the sixth core mold are taken out from the special-shaped composite shell in turn, thereby realizing the demolding of the special-shaped shell. At the same time, second screw holes are processed on the first core mold, the second core mold, the third core mold, the fourth core mold, the fifth core mold, and the sixth core mold, so that one end of the extended screw is screwed into the second screw hole, so that the first core mold, the second core mold, the third core mold, the fourth core mold, the fifth core mold, and the sixth core mold are conveniently taken out with the help of the extended screw, and one end of the extended screw is threadedly connected to the first screw hole, so that the end baffle is conveniently taken out with the help of the extended screw. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Other features, objects and advantages of the present invention will become more apparent from the detailed description of the non-limiting embodiments with reference to the following drawings:

[0014] Figure 1 This is a structural schematic diagram of a self-heating special-shaped composite shell RTM molding die of the utility model;

[0015] Figure 2 This is a schematic diagram of the assembly of the epoxy resin insulation board, the upper mold and the lower mold in the RTM molding mold of a self-heating special-shaped composite shell of the utility model;

[0016] Figure 3 This is a schematic diagram of the assembly of the epoxy resin insulation board, the upper mold and the lower mold in the RTM molding mold of a self-heating special-shaped composite shell of the utility model from another perspective;

[0017] Figure 4 It is a three-dimensional diagram of a special-shaped composite shell;

[0018] Figure 5 This is a three-dimensional diagram of the lower mold in a self-heating special-shaped composite shell RTM molding mold of the utility model;

[0019] Figure 6 This is a three-dimensional view from another angle of the middle and lower molds of the RTM molding mold for a self-heating special-shaped composite shell of the utility model;

[0020] Figure 7 This is a schematic diagram of the assembly of the cover plate and the upper mold in the RTM molding mold of a self-heating special-shaped composite shell of the utility model;

[0021] Figure 8 This is a three-dimensional diagram of the upper mold in the RTM molding mold of a self-heating special-shaped composite shell of the utility model;

[0022] Figure 9 This is a schematic diagram of the spatial arrangement of the upper heating rod and the lower heating rod in the RTM molding die of a self-heating special-shaped composite shell of the utility model;

[0023] Figure 10 This is a schematic diagram of the assembly of the core mold component and the end baffle in a self-heating special-shaped composite shell RTM molding mold of the utility model;

[0024] Figure 11 This is a three-dimensional diagram of an end baffle in an RTM molding die for a self-heating special-shaped composite shell of the present invention;

[0025] Figure 12 This is a three-dimensional diagram of a core mold assembly in a self-heating special-shaped composite shell RTM molding mold of the utility model;

[0026] Figure 13 This is a schematic diagram of the exploded structure of a core mold assembly in a self-heating special-shaped composite shell RTM molding mold of the utility model;

[0027] Figure 14 This is a schematic diagram of the assembly of the end baffle and the lower mold in a self-heating special-shaped composite shell RTM molding mold of the utility model;

[0028] In the figure: 1-upper mold, 2-cover plate, 3-lower mold, 4-base, 5-lower anti-collision protection block, 6-lower aviation plug, 7-upper anti-collision protection block, 8-upper aviation plug, 9-protective plate, 10-discharge port adapter, 11-inlet gate adapter, 12-special-shaped composite shell, 13-end baffle, 14-lower heating rod, 15-lower wiring groove, 16-lower thermocouple, 17-upper wiring groove, 18-epoxy resin insulation board, 19-upper thermocouple, 20-upper heating rod, 21-first core mold, 22-second core mold, 23-fourth core mold, 24-fifth core mold, 25-sixth core mold, 26-distribution trough, 27-connecting hole, 28-third core mold. DETAILED DESCRIPTION

[0029] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0030] See also Figure 1 、 Figures 4-14 The utility model provides a technical solution: a self-heating RTM molding die for a special-shaped composite shell, comprising an upper mold 1, a lower mold 3 matched with the upper mold 1 is provided on the lower side of the upper mold 1, a side of the lower mold 3 is installed with a gate adapter 11 communicating with the mold cavity formed by the lower mold 3 and the upper mold 1, an end baffle 13 for dispersing materials is installed on the side near the gate adapter 11 in the mold cavity formed by the upper mold 1 and the lower mold 3, and a core mold assembly matched with the end baffle 13 for supporting the special-shaped composite shell 12 is provided in the mold cavity formed by the upper mold 1 and the lower mold 3;

[0031] The core mold assembly comprises a first core mold 21, one side of the first core mold 21 is provided with a second core mold 22 which is attached to the first core mold 21, the lower side of the first core mold 21 is provided with a fourth core mold 23 which is attached to the first core mold 21, the lower side of the second core mold 22 is provided with a third core mold 28 which is attached to the first core mold 21 and the fourth core mold 23, one end of the first core mold 21 away from the end baffle 13 is provided with a fifth core mold 24 which is attached to the first core mold 21 and the fourth core mold 23, and one end of the second core mold 22 away from the end baffle 13 is provided with a sixth core mold 25 which is attached to the second core mold 22 and the fifth core mold 24;

[0032] The end baffle 13 is recessed on the side away from the pouring gate adapter 11 to form a cloth slot 26, the side of the end baffle 13 facing the pouring gate adapter 11 is provided with a plurality of communication holes 27 which are communicated with the cloth slot 26, the side of the end baffle 13 facing the upper mold 1 is provided with two first screw holes, the side of the first core mold 21, the second core mold 22, the third core mold 28, the fourth core mold 23, the fifth core mold 24 and the sixth core mold 25 facing the end baffle 13 are provided with second screw holes, the core mold assembly is formed by combining the first core mold 21, the second core mold 22, the third core mold 28, the fourth core mold 23, the fifth core mold 24 and the sixth core mold 25, the first core mold 21, the second core mold 22, the third core mold 28, the fourth core mold 23, the fifth core mold 24 and the sixth core mold 25 are taken out from the special-shaped composite shell 12 in sequence, the demolding of the special-shaped shell is realized, the second screw holes are processed on the first core mold 21, the second core mold 22, the third core mold 28, the fourth core mold 23, the fifth core mold 24 and the sixth core mold 25, one end of the lengthened screw rod is screwed into the second screw hole, the first core mold 21, the second core mold 22, the third core mold 28, the fourth core mold 23, the fifth core mold 24 and the sixth core mold 25 are taken out by means of the lengthened screw rod, one end of the lengthened screw rod is screwed into the first screw hole, and the end baffle 13 is taken out by means of the lengthened screw rod.

[0033] Referring to Figures 1-10, the upper mold 1 is installed with two discharge port adapters 10 on the side away from the gate adapter 11, which are connected to the mold cavity formed by the lower mold 3 and the upper mold 1. A plurality of upper thermocouples 19 and a plurality of upper heating rods 20 are evenly installed in the upper mold 1. The upper heating rods 20 are electrically connected to the upper thermocouples 19. The upper mold 1 is installed with two upper aviation plugs 8 on the side where the gate adapter 11 is installed, which are electrically connected to the upper thermocouples 19. A plurality of lower thermocouples 16 and a plurality of lower heating rods 14 are installed in the lower mold 3. The lower thermocouples 16 are electrically connected to the lower heating rods 14. The lower mold 3 is installed with two lower aviation plugs 8 on the side close to the upper aviation plug 8. The thermocouple 16 is electrically connected to the lower aviation plug 6, and multiple upper thermocouples 19 and multiple upper heating rods 20 are installed in the upper mold 1, and the upper thermocouples 19 are electrically connected to the upper heating rods 20 and the upper aviation plug 8, and multiple lower thermocouples 16 and multiple lower heating rods 14 are installed in the lower mold 3, so that the lower thermocouples 16 are electrically connected to the lower aviation plug 6 and the lower heating rods 14. When power is turned on, the lower heating rods 14 and the upper heating rods 20 heat and pressurize the raw materials of the special-shaped composite shell 12 in the mold cavity formed by the upper mold 1 and the lower mold 3, and heating and pressurizing are achieved without entering the autoclave, thereby improving the convenience of use.

[0034] See Figures 1-9 A detachable base 4 is installed at the bottom of the lower mold 3, and the lower surface of the lower mold 3 is recessed upward to form a lower wiring groove 15 for wiring. Upper wiring grooves 17 are provided on the two parallel side surfaces of the upper mold 1 and on the side on which the upper aviation plug 8 is installed. A detachable cover plate 2 is installed in the upper wiring groove 17, and a detachable epoxy resin insulation board 18 is installed on the surrounding surfaces of the upper mold 1 and the surrounding surfaces of the lower mold 3. Upper anti-collision protection blocks 7 connected and fixed to the upper mold 1 are provided on both sides of the upper aviation plug 8, and lower anti-collision protection blocks 5 connected and fixed to the lower mold 3 are provided on both sides of the lower aviation plug 6. A protective plate 9 is installed between the two upper anti-collision protection blocks 7, and the protective plate 9 is arranged on the side of the upper anti-collision protection block 7 away from the lower anti-collision protection block 5. The upper anti-collision protection block 7, the base 4, the protective plate 9 and the lower anti-collision protection block 5 jointly play a role in preventing the upper aviation plug 8 and the lower aviation plug 6 from being damaged by impact.

[0035] Although this specification is described according to implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A self-heating RTM forming die for a special-shaped composite shell, comprising an upper die (1), characterized in that: The lower side of the upper mold (1) is provided with a lower mold (3) that matches the upper mold (1), and a side of the lower mold (3) is provided with a gate adapter (11) that communicates with the mold cavity formed by the lower mold (3) and the upper mold (1). An end baffle (13) for dispersing materials is provided on the side of the mold cavity formed by the upper mold (1) and the lower mold (3) close to the gate adapter (11). A core mold assembly that matches the end baffle (13) for supporting the special-shaped composite shell (12) is provided in the mold cavity formed by the upper mold (1) and the lower mold (3). Two outlet ports that communicate with the mold cavity formed by the lower mold (3) and the upper mold (1) are provided on a side of the upper mold (1) away from the gate adapter (11). The material gate adapter (10) is provided, and a plurality of upper thermocouples (19) and a plurality of upper heating rods (20) are evenly installed in the upper mold (1), and the upper heating rods (20) are electrically connected to the upper thermocouples (19). The side of the upper mold (1) on which the gate adapter (11) is installed is provided with two upper aviation plugs (8) electrically connected to the upper thermocouples (19). The lower mold (3) is provided with a plurality of lower thermocouples (16) and a plurality of lower heating rods (14), and the lower thermocouples (16) are electrically connected to the lower heating rods (14). The side of the lower mold (3) close to the upper aviation plug (8) is provided with two lower aviation plugs (6) electrically connected to the lower thermocouples (16).

2. The self-heating RTM forming die for a special-shaped composite shell according to claim 1, characterized in that: A detachable base (4) is installed at the bottom of the lower mold (3), and the lower surface of the lower mold (3) is recessed upward to form a lower wiring groove (15) for wiring. Upper wiring grooves (17) are provided on two parallel side surfaces of the upper mold (1) and on the side of the upper mold (1) on which the aviation plug (8) is installed, and a detachable cover plate (2) is installed in the upper wiring groove (17).

3. The self-heating RTM forming die for a special-shaped composite shell according to claim 1, characterized in that: The core mold assembly comprises a first core mold (21), a second core mold (22) fitted with the first core mold (21) is provided on one side of the first core mold (21), a fourth core mold (23) fitted with the first core mold (21) is provided on the lower side of the first core mold (21), a third core mold (28) fitted with the first core mold (21) and the fourth core mold (23) is provided on the lower side of the second core mold (22), a fifth core mold (24) fitted with the first core mold (21) and the fourth core mold (23) is provided on the end of the first core mold (21) away from the end baffle (13), and a sixth core mold (25) fitted with the second core mold (22) and the fifth core mold (24) is provided on the end of the second core mold (22) away from the end baffle (13).

4. The self-heating RTM forming die for a special-shaped composite shell according to claim 3, characterized in that: Two first screw holes are provided on a side of the end baffle (13) facing the upper mold (1), and second screw holes are provided on a side of the first core mold (21), the second core mold (22), the third core mold (28), the fourth core mold (23), the fifth core mold (24), and the sixth core mold (25) facing the end baffle (13).

5. The self-heating RTM forming die for a special-shaped composite shell according to claim 1, characterized in that: The side of the end baffle (13) facing away from the inlet gate adapter (11) is recessed to form a material distribution groove (26), and the side of the end baffle (13) facing the inlet gate adapter (11) is provided with a plurality of communication holes (27) communicating with the material distribution groove (26).

6. The self-heating RTM forming die for a special-shaped composite shell according to claim 1, characterized in that: Removable epoxy resin heat insulation boards (18) are installed on the four sides of the upper mold (1) and the four sides of the lower mold (3), upper anti-collision protection blocks (7) connected and fixed to the upper mold (1) are provided on both sides of the upper aviation plug (8), and lower anti-collision protection blocks (5) connected and fixed to the lower mold (3) are provided on both sides of the lower aviation plug (6), and a protective plate (9) is installed between the two upper anti-collision protection blocks (7), and the protective plate (9) is arranged on the side of the upper anti-collision protection block (7) away from the lower anti-collision protection block (5).

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