Integrated forming combined die for shell of buoy throwing device

Abstract

The utility model discloses an integrated forming combined die for a shell of a buoy throwing device, belongs to the technical field of composite material processing, and aims to solve the problem that the flanging thickness is not uniform when the shell of the conventional buoy throwing device is formed. Comprising a bottom die and side dies, the upper surface of the bottom die comprises a streamlined upper molded surface, a bottom wall groove matched with the lower surface of the bottom wall of the shell is formed in the upper molded surface, a circle of flanging groove is formed in the periphery of the bottom wall groove, the four side dies surround the edge of the bottom wall groove and shield the upper side of the flanging groove, and a margin groove is further formed in the upper molded surface of the bottom die. The margin groove surrounds the periphery of the flanging groove, a plurality of extrusion grooves are formed in the upper surface of the bottom die, and the margin groove is connected with the peripheral edge of the bottom die through the extrusion grooves. The margin groove is arranged on the periphery of the flanging groove, and the margin groove is connected to the peripheries of the four side dies through the plurality of extrusion grooves, so that the phenomenon that resin flows nowhere in the flanging groove in the curing process of a shell product, and the flanging thickness is not uniform can be prevented.

Description

Technical Field

[0001] This utility model belongs to the field of composite material processing technology, and in particular relates to an integrated molding die for the outer shell of a buoy launching device. Background Technology

[0002] For anti-submarine helicopters, the airtightness and waterproofness of the fuselage are particularly important. The outer shell of the buoy deployment device needs to be tightly connected to the fuselage skin to prevent water leakage. The outer shell has a streamlined bottom wall, the outline of which is rectangular when projected from above. Side walls extend upwards from all four sides of the bottom wall. The outer surface of the connection between the side wall and the bottom wall has a flange, which overlaps with the fuselage skin and is sealed with an EPDM rubber sheet.

[0003] The outer shell of the buoy deployment device is formed by layering and curing multiple layers of resin-impregnated fiber. Currently, the conventional molding method for the outer shell is to use a combination mold. The combination mold has a bottom mold and four side molds connected end to end. The upper surface of the bottom mold is streamlined and matches the upper surface of the flange. A bottom wall groove that matches the shape of the bottom wall of the outer shell is opened on the upper surface of the bottom mold. A rectangular flange groove is provided around the outer perimeter of the bottom wall groove. The width of the flange groove is equal to the width of the flange, and the depth of the flange groove is equal to the thickness of the flange. Four side molds surround the edge of the bottom wall groove and cover the top of the flange groove. The inner side walls of the four side molds form a rectangular opening for forming the side walls of the outer shell. The bottom surface of the four side molds after combination is streamlined and matches the upper end face of the bottom mold. When forming the outer shell, firstly, two layers of fiber are laid in the area of ​​the flange groove and the bottom wall groove. At the same time, two layers of fiber are laid on the inner side and bottom surface of the four side molds. The area of ​​the fiber layer laid on the bottom surface of the side mold matches the flange groove. Then, the four side molds and the bottom mold are closed so that the fiber layers laid on the bottom mold and the side molds form the outer surface and flange of the outer shell. Next, on the basis of the two fiber layers laid, the core material is laid and the remaining fiber layers of the outer shell are laid to form the inner surface of the outer shell. Finally, the peeling cloth, the isolation film, and the vacuum bag are laid. After the vacuum test is qualified, the shell is placed in the can for curing.

[0004] Since the resin is still in a flowable state when the fiber layer is laid, if excess resin flows into the flange groove during the curing process, it will cause uneven flange thickness of the outer shell product and affect the sealing performance of the machine body. Utility Model Content

[0005] The purpose of this invention is to provide an integrated molding die for the outer shell of a buoy launching device, thereby solving the problem of uneven flange thickness during the molding of existing buoy launching device shells. The technical solution adopted by this invention is as follows:

[0006] A buoy launching device housing integrated molding die includes a bottom mold and side molds. The housing is square-groove shaped and has a streamlined bottom wall. The outline of the bottom wall is rectangular in vertical projection. All four sides of the bottom wall extend upwards to form side walls. The outer surface of the connection between the side walls and the bottom wall is provided with a flange. The upper surface of the bottom mold includes a streamlined upper surface and connecting edges that extend horizontally at both ends. The shape of the upper surface matches the upper surface of the flange. A bottom wall groove that matches the lower surface of the bottom wall is formed on the upper surface. A flange groove is provided around the outer periphery of the bottom wall groove. The width of the flange groove is equal to the width of the flange, and the depth of the flange groove is equal to the thickness of the flange. Four side molds surround the edge of the bottom wall groove and cover the upper side of the flange groove. The inner surfaces of the four side molds form a rectangular opening. The bottom surface of the four side molds after assembly matches the upper surface of the bottom mold.

[0007] The upper surface of the bottom mold is also provided with a allowance groove, which is a rectangular ring and surrounds the outer periphery of the flange groove. Several extrusion grooves are opened on the upper surface of the bottom mold, and the allowance groove is connected to the four edges of the bottom mold through several extrusion grooves.

[0008] Furthermore, a number of first connecting holes are machined on the upper surface of the bottom mold, and the number of first connecting holes are located on the outer periphery of the extrusion groove. Flange strips extend outward from the lower ends of the four side molds, and a number of second connecting holes are arranged in a straight line along the length of the flange strips of the side molds. The number of first connecting holes and the number of second connecting holes on the four side molds are connected one-to-one by first bolts.

[0009] Furthermore, the two adjacent side molds are positioned by guide pins and connected by a second bolt.

[0010] Furthermore, four triangular ribs are provided between the outer surfaces of the two shorter side molds and the flange strip, and five triangular ribs are provided between the outer surfaces of the two longer side molds and the flange strip.

[0011] Furthermore, each side mold is equipped with lifting rings at both ends.

[0012] Furthermore, the bottom mold is equipped with several lifting lugs.

[0013] Furthermore, two guide cone pins are vertically arranged on the two connecting edges of the bottom mold, and guide blocks are provided on the flange strips of the two shorter side molds. The guide blocks have vertical stepped holes, and bushings are embedded in the stepped holes. The four guide cone pins and four bushings are inserted and positioned in a corresponding manner.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. Since the resin is still in a flowable state when the fiber layer is laid, if excess resin flows into the flanging groove during the curing process, it will cause uneven flanging thickness in the shell product. This utility model provides a reserve groove on the outer periphery of the flanging groove. The reserve groove is connected to the outer periphery of the four side molds through several extrusion grooves, which can prevent the resin from having nowhere to flow in the flanging groove during the curing process of the shell product, thus preventing uneven flanging thickness.

[0016] 2. The existing combination mold has two rows of second connecting holes on the side mold, which are connected to the bottom mold by two rows of bolts. When the two rows of bolts are connected, if the locking force of the two rows of bolts is different, it will cause uneven flange thickness of the shell product. This utility model improves the distribution of connecting bolts when the side mold and bottom mold are closed. By connecting the side mold and bottom mold with several single-row first bolts, the uneven flange thickness caused by the different locking force of the two rows of bolts can be avoided, and the mold closing time can be reduced.

[0017] 3. The existing combination mold has three triangular ribs on the outside of the shorter side mold and four triangular ribs on the outside of the longer side mold. This utility model improves the triangular ribs by increasing their density, thereby increasing the strength of the side mold and preventing deformation during side mold locking and high-temperature curing, which would affect product quality.

[0018] 4. Existing combination molds use tapered precision positioning pins to position the side mold and bottom mold together, which is difficult to achieve and results in a long mold closing time. This utility model improves the mold closing positioning component. Through the insertion and cooperation of the guide tapered pin and the bushing, not only can high-precision positioning be achieved, but also, because the tip of the guide tapered pin and the bushing have a large size difference, the positioning can be easily found, which greatly shortens the mold closing time of the side mold and bottom mold and ensures the quality of the shell product. Attached Figure Description

[0019] Figure 1 This is a new practical isometric drawing;

[0020] Figure 2 This is a top view of the present invention;

[0021] Figure 3 yes Figure 2 AA section view;

[0022] Figure 4 yes Figure 3 Enlarged view of point B;

[0023] Figure 5 This is the isometric drawing of the bottom mold of this utility model;

[0024] Figure 6 This is an isometric view of the shorter side mold of this utility model;

[0025] Figure 7This is a top view of the shorter side mold of this utility model;

[0026] Figure 8 yes Figure 7 CC section view;

[0027] Figure 9 This is an isometric view of the longer side mold of this utility model;

[0028] Figure 10 This is an isometric view of the longer side mold of this utility model from another perspective;

[0029] Figure 11 This is the front view of the casing;

[0030] Figure 12 It is an isometric drawing of an existing modular mold;

[0031] Figure 13 This is a schematic diagram of how the side mold and bottom mold of an existing combined mold are positioned and closed by a tapered precision positioning pin assembly.

[0032] In the diagram, 1. bottom mold, 2. side mold, 3. guide block, 4. lifting lug, 5. first bolt, 6. triangular rib, 7. inner side surface, 8. second bolt, 9. guide pin, 10. lifting ring, 11. bottom wall groove, 12. flange groove, 13. allowance groove, 14. extrusion groove, 15. guide cone pin, 16. first connecting hole, 17. stepped hole, 18. bushing, 19. second connecting hole, 20. upper surface, 21. connecting edge, 22. bottom wall of outer shell, 23. side wall of outer shell, 24. flange. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model is described below with reference to specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are merely exemplary and not intended to limit the scope of the present utility model. Furthermore, in the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessarily obscuring the concept of the present utility model.

[0034] The connections mentioned in this utility model are divided into fixed connections and detachable connections. Fixed connections, also known as non-detachable connections, include but are not limited to conventional fixed connection methods such as folded connections, riveted connections, adhesive connections, and welded connections. Detachable connections include but are not limited to conventional disassembly methods such as bolt connections, snap-fit ​​connections, pin connections, and hinge connections. When a specific connection method is not explicitly defined, it is assumed that at least one existing connection method can be found to achieve this function, and those skilled in the art can choose according to their needs. For example, a welded connection can be chosen for a fixed connection, and a bolted connection can be chosen for a detachable connection.

[0035] The present invention will be further described in detail below with reference to the accompanying drawings. The following embodiments are explanations of the present invention, but the present invention is not limited to the following embodiments.

[0036] Example: Figures 1 to 13 As shown, an integrated molding die for a buoy launching device shell includes a bottom mold 1 and a side mold 2. The shell is square-shaped and has a streamlined bottom wall 22. The outline of the bottom wall 22 is rectangular in its vertical projection. All four sides of the bottom wall 22 extend upwards to form side walls 23. The outer surface of the connection between the side walls 23 and the bottom wall 22 is provided with a flange 24. The upper surface of the bottom mold 1 includes a streamlined upper surface 20 and connecting edges 21 extending horizontally at both ends of the upper surface 20. The shape of the upper surface 20 is adapted to the upper surface of the flange 24. A bottom wall groove 11 adapted to the lower surface of the bottom wall 22 is provided on the upper surface 20. A flange groove 12 is provided around the outer periphery of the bottom wall groove 11. The width of the flange groove 12 is equal to the width of the flange 24, and the depth of the flange groove 12 is equal to the thickness of the flange 24. Four side molds 2 surround the edge of the bottom wall groove 11 and cover the upper side of the flange groove 12. The inner surfaces 7 of the four side molds 2 form a rectangular opening. The bottom surface of the four side molds 2 after combination is adapted to the upper end surface of the bottom mold 1.

[0037] The upper surface 20 of the bottom mold 1 is also provided with a margin groove 13. The margin groove 13 is rectangular and ring-shaped. The margin groove 13 surrounds the outer periphery of the flange groove 12. The upper surface of the bottom mold 1 is provided with a number of extrusion grooves 14. The margin groove 13 is connected to the four edges of the bottom mold 1 through the number of extrusion grooves 14.

[0038] During the shell molding process, two layers of fiber are first laid within the range of the flange groove 12 and the bottom wall groove 11. At the same time, two layers of fiber are laid on the inner surface 7 and bottom surface of the four side molds 2. The range of fiber layers laid on the bottom surface of the side molds 2 is adapted to the flange groove 12. Then, the four side molds 2 and the bottom mold 1 are closed, so that the fiber layers laid on the bottom mold 1 and the side molds 2 form the outer surface of the shell and the flange 24. Next, on the basis of the two fiber layers laid, the core material is laid and the remaining fiber layers of the shell are laid to form the inner surface of the shell. Finally, the peeling cloth, the isolation film, and the vacuum bag are laid. After the vacuum test is qualified, the shell is placed in the can for curing.

[0039] Since the resin is still in a flowable state when the fiber layer is laid, if excess resin flows into the flange groove 12 during the curing process, it will cause uneven thickness of the flange 24 of the outer shell product. This invention provides an allowance groove 13 on the outer periphery of the flange groove 12. The allowance groove 13 is connected to the outer periphery of the four side molds 2 through several extrusion grooves 14, which can prevent the resin from having nowhere to flow in the flange groove 12 during the curing process of the outer shell product, thus preventing uneven thickness of the flange 24.

[0040] The upper surface of the bottom mold 1 is machined with a number of first connecting holes 16, which are located on the outer periphery of the extrusion groove 14. The lower ends of the four side molds 2 are all extended outward with flange strips. The flange strips of the side molds 2 are all arranged in a line along the length direction with a number of second connecting holes 19. The number of first connecting holes 16 and the number of second connecting holes 19 on the four side molds 2 are connected one-to-one by the first bolts 5.

[0041] The existing combination mold has two rows of second connecting holes on the side mold, which are connected to the bottom mold by two rows of bolts. When the two rows of bolts are connected, if the locking force of the two rows of bolts is different, it will cause the thickness of the flange 24 of the outer shell product to be uneven. This utility model improves the distribution of connecting bolts when the side mold 2 and the bottom mold 1 are closed. By connecting the side mold 2 and the bottom mold 1 with several single-row first bolts 5, the uneven thickness of the flange 24 caused by the different locking forces of the two rows of bolts can be avoided, and the mold closing time can be reduced.

[0042] The two adjacent side molds 2 are positioned by guide pins 9 and connected by second bolts 8. The function of guide pins 9 is to ensure precise alignment of the side molds 2 when they are closed, reducing assembly errors.

[0043] Four triangular ribs 6 are provided between the outer surfaces of the two shorter side molds 2 and the flange strip, while five triangular ribs 6 are provided between the outer surfaces of the two longer side molds 2 and the flange strip. Existing combined molds have three triangular ribs 6 on the outer side of the shorter side molds and four triangular ribs 6 on the outer side of the longer side molds. This invention improves upon this by increasing the density of the triangular ribs 6, thereby increasing the strength of the side molds 2 and preventing deformation during locking and high-temperature curing, which would affect product quality.

[0044] Each side mold 2 is equipped with lifting rings 10 at both ends.

[0045] The bottom mold 1 is provided with several lifting lugs 4.

[0046] Two guide cone pins 15 are vertically arranged on each of the two connecting edges 21 of the bottom mold 1. Guide blocks 3 are provided on the flange strips of the two shorter side molds 2. Stepped holes 17 are vertically opened on the guide blocks 3, and bushings 18 are embedded in the stepped holes 17. The four guide cone pins 15 and the four bushings 18 are inserted and positioned one-to-one. Existing combined molds use tapered precision positioning pin assemblies to position the side molds and bottom molds together. The positioning is difficult and the closing time of the side molds and bottom molds is long. This utility model improves the mold closing positioning component. Through the insertion and cooperation of the guide cone pins 15 and bushings 18, not only can high-precision positioning be obtained, but also because the tip of the guide cone pin 15 is significantly different from the size of the bushing 18, it is easy to find the correct position, which greatly shortens the closing time of the side molds 2 and bottom mold 1 and ensures the quality of the shell product.

[0047] The above embodiments are merely illustrative examples of the present utility model and do not limit its scope of protection. Those skilled in the art can make partial changes to it, as long as they do not exceed the spirit and essence of the present utility model, they are all within the scope of protection of the present utility model.

Claims

1. A molded assembly for an integrated outer shell of a buoy launching device, comprising a bottom mold (1) and a side mold (2), wherein the outer shell is square-grooved, the outer shell has a streamlined bottom wall (22), the outline of the bottom wall (22) is rectangular in vertical projection, and four sides of the bottom wall (22) extend upward to form outer shell side walls (23), the outer surface of the connection between the outer shell side walls (23) and the bottom wall (22) is provided with a flange (24), the upper surface of the bottom mold (1) includes a streamlined upper surface (20) and connecting edges (21) extending horizontally at both ends of the upper surface (20), the upper surface (20)... The line shape is adapted to the upper surface of the flange (24). The upper surface (20) is provided with a bottom wall groove (11) adapted to the lower surface of the bottom wall (22) of the outer shell. A flange groove (12) is provided around the bottom wall groove (11). The width of the flange groove (12) is equal to the width of the flange (24). The depth of the flange groove (12) is equal to the thickness of the flange (24). The four side molds (2) surround the edge of the bottom wall groove (11) and cover the upper side of the flange groove (12). The inner side surfaces (7) of the four side molds (2) form a rectangular opening. The bottom surface of the four side molds (2) after combination is adapted to the upper end surface of the bottom mold (1). Its features are: The upper surface (20) of the bottom mold (1) is also provided with a margin groove (13). The margin groove (13) is rectangular and surrounds the outer periphery of the flange groove (12). The upper surface of the bottom mold (1) is provided with several extrusion grooves (14). The margin groove (13) is connected to the four edges of the bottom mold (1) through several extrusion grooves (14).

2. The integrated molding die for the outer shell of a buoy launching device according to claim 1, characterized in that: The upper surface of the bottom mold (1) is machined with a number of first connecting holes (16). The number of first connecting holes (16) are located on the outer periphery of the extrusion groove (14). The lower ends of the four side molds (2) are all extended outward with flange strips. The flange strips of the side molds (2) are all arranged in a line along the length direction with a number of second connecting holes (19). The number of first connecting holes (16) and the number of second connecting holes (19) on the four side molds (2) are connected one by one by the first bolts (5).

3. The integrated molding die for the outer shell of a buoy launching device according to claim 1, characterized in that: The two adjacent side molds (2) are positioned by guide pins (9) and connected by second bolts (8).

4. The integrated molding die for the outer shell of a buoy launching device according to claim 1, characterized in that: Four triangular ribs (6) are provided between the outer surfaces of the two shorter side molds (2) and the flange strip, and five triangular ribs (6) are provided between the outer surfaces of the two longer side molds (2) and the flange strip.

5. The integrated molding die for the outer shell of a buoy launching device according to claim 1, characterized in that: Each side mold (2) is equipped with lifting rings (10) at both ends.

6. The integrated molding die for the outer shell of a buoy launching device according to claim 1, characterized in that: The bottom mold (1) is provided with several lifting lugs (4).

7. A molded assembly for an integrated shell of a buoy launching device according to any one of claims 1-6, characterized in that: Two guide pins (15) are vertically arranged on the two connecting edges (21) of the bottom mold (1). Guide blocks (3) are provided on the flange strips of the two shorter side molds (2). Stepped holes (17) are vertically opened on the guide blocks (3). Bushings (18) are embedded in the stepped holes (17). The four guide pins (15) and the four bushings (18) are inserted and positioned in a one-to-one correspondence.

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