An inverted cone solid rocket engine overwrap die

Abstract

The application provides an inverted-cone solid rocket engine coating die, and relates to the technical field of die pressing molds.The device comprises an upper die and a lower die, wherein the upper die and the lower die are arranged correspondingly; an inverted-cone inner shaft is located between the upper die and the lower die, and the small-diameter end of the inverted-cone inner shaft is in communication with an air source; an exhaust rod assembly penetrates into the inverted-cone inner shaft in the axial direction and is detachably connected with the inverted-cone inner shaft, and raw materials are coated on the end of the exhaust rod assembly and the circumferential side of the inverted-cone inner shaft.The application can achieve the purpose of quickly and efficiently demolding the raw materials by inflating between the inverted-cone inner shaft and the raw materials, and the structure is simple and easy to operate.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of die molding, in particular to a reverse conical solid rocket engine covering sleeve die molding. BACKGROUND

[0002] With the traditional forming mode, including the upper die, the lower die and the inner shaft, because the structure form is reverse conical, the opening size is much smaller than the size of the seal, the inner shaft and the covering sleeve are closely laid, and the manual operation is difficult to demold, and the working efficiency is low.

[0003] Therefore, there is an urgent need for a reverse conical solid rocket engine covering sleeve die molding which can improve the demolding efficiency and reduce the labor intensity. SUMMARY

[0004] The present application aims to provide a reverse conical solid rocket engine covering sleeve die molding, which solves the technical problem of manual operation and difficult demolding in the prior art. The preferred technical solutions in the present application can produce many technical effects, which are described in detail below.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0006] The present application provides a reverse conical solid rocket engine covering sleeve die molding, which comprises:

[0007] The upper die and the lower die are correspondingly arranged;

[0008] The reverse conical inner shaft is located between the upper die and the lower die, and the small diameter end of the reverse conical inner shaft is in communication with the air source:

[0009] The exhaust rod assembly penetrates into the reverse conical inner shaft along the axial direction, and is detachably connected with the reverse conical inner shaft, and the raw material is wrapped around the end of the exhaust rod assembly and the peripheral side of the reverse conical inner shaft.

[0010] Preferably, it further comprises:

[0011] The connecting port is provided in the large diameter end of the reverse conical inner shaft, the first end of the exhaust rod assembly is blocked in the connecting port, and the second end of the exhaust rod assembly is detachably connected in the small diameter end of the reverse conical inner shaft.

[0012] Preferably, the exhaust rod assembly comprises:

[0013] The cap-shaped piece is threadedly connected in the connecting port.

[0014] An active exhaust rod, a second end of the active exhaust rod passes through a shaft center of the hat-shaped piece and is detachably connected in a small-diameter end of the inverted conical inner shaft, a first end of the active exhaust rod is abutted in a side wall of the hat-shaped piece away from the inverted conical inner shaft, and a seal is arranged between the side wall of the hat-shaped piece.

[0015] Preferably, further comprising:

[0016] A positioning column, a first end of the positioning column is coaxially and fixedly connected to the small-diameter end of the inverted conical inner shaft.

[0017] Preferably, further comprising:

[0018] A guide column, the guide column is radially and fixedly connected in the upper mold;

[0019] A positioning hole, the positioning hole is radially arranged on the positioning column, the guide column is correspondingly arranged with the positioning hole and is matched with the positioning hole.

[0020] Preferably, further comprising:

[0021] A balance column, the balance column is located outside the upper mold and the lower mold and is coaxially and fixedly connected to a second end of the positioning column.

[0022] Preferably, further comprising:

[0023] A nut, the nut is threadedly sleeved on the first end of the active exhaust rod and is abutted in a side of the small-diameter end of the inverted conical inner shaft away from the hat-shaped piece.

[0024] Preferably, further comprising:

[0025] A gas nozzle, the gas nozzle is fixedly connected in the small-diameter end of the inverted conical inner shaft and is communicated with a large-diameter end of the inverted conical inner shaft, and an air outlet of the gas source is connected to an air inlet of the gas nozzle.

[0026] In the technical scheme, before vulcanization, the exhaust rod assembly is fixedly connected with the inverted conical inner shaft, the raw material is wrapped around the end of the exhaust rod assembly and the circumferential side of the inverted conical inner shaft and located between the upper mold and the lower mold; after vulcanization, the raw material is attached to the end of the exhaust rod assembly and the circumferential side of the inverted conical inner shaft, and the exhaust rod assembly is partially disassembled to generate a gap between the exhaust rod assembly and the inverted conical inner shaft; since the small-diameter end of the inverted conical inner shaft is communicated with the gas source, air is blown into the inverted conical inner shaft, and the compressed gas passes through the end of the exhaust rod assembly along the gap and enters the circumferential side of the raw material and the inverted conical inner shaft, so that the raw material is quickly separated from the end of the exhaust rod assembly and the circumferential side of the inverted conical inner shaft, facilitating demolding. Overall, the application achieves the purpose of fast and efficient demolding of the raw material by inflating between the inverted conical inner shaft and the raw material, and the structure is simple and easy to operate. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort.

[0028] Fig. 1 is the schematic diagram of explosion of the present application;

[0029] Fig. 2 is the schematic diagram of the movable exhaust rod and the inverted cone inner shaft of the present application.

[0030] In the figure, 1 is a balancing column, 2 is a positioning column, 3 is an air nozzle, 4 is a lower mold, 5 is an inverted cone inner shaft, 6 is a movable exhaust rod, 7 is a cap-shaped part, 8 is an upper mold, 9 is a nut, 10 is a guide column, 11 is a connecting port, and 12 is a positioning hole. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of the present application more clear, the technical solutions of the present application will be described in detail. Obviously, the described embodiments are only some of the embodiments of the present application, but not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of the present application.

[0032] Reference Figs. 1-2 The specific embodiments of the present application provide an inverted cone solid rocket engine covering sleeve mold pressing mold, which comprises:

[0033] The upper mold 8 and the lower mold 4 are arranged correspondingly.

[0034] The inverted cone inner shaft 5 is located between the upper mold 8 and the lower mold 4, and the small-diameter end of the inverted cone inner shaft 5 is in communication with the air source.

[0035] The exhaust rod assembly penetrates the inverted cone inner shaft 5 in the axial direction and is detachably connected with the inverted cone inner shaft 5, and the raw material is wrapped around the end of the exhaust rod assembly and the circumferential side of the inverted cone inner shaft 5.

[0036] The traditional forming mode is used, the structure is inverted cone, the opening size is much smaller than the size of the sealing part, the inner shaft and the covering sleeve are closely laid, and manual operation is used. In the application, before vulcanization, the exhaust rod assembly is fixedly connected with the inverted cone-shaped inner shaft 5, the raw material is wrapped around the end of the exhaust rod assembly and the circumferential side of the inverted cone-shaped inner shaft 5 and located between the upper die 8 and the lower die 4; after vulcanization, the raw material is wrapped around the end of the exhaust rod assembly and the circumferential side of the inverted cone-shaped inner shaft 5, and the exhaust rod assembly is partially disassembled to form a gap between the exhaust rod assembly and the inverted cone-shaped inner shaft 5. Since the small-diameter end of the inverted cone-shaped inner shaft 5 is connected with the air source, air is blown into the inverted cone-shaped inner shaft 5, the compressed gas passes through the end of the exhaust rod assembly along the gap and enters the circumferential side of the raw material and the inverted cone-shaped inner shaft 5, so that the raw material is quickly separated from the end of the exhaust rod assembly and the circumferential side of the inverted cone-shaped inner shaft 5, and demolding is facilitated. Overall, the application achieves the purpose of rapid and efficient demolding of the raw material by inflating between the inverted cone-shaped inner shaft 5 and the raw material, and the structure is simple and easy to operate.

[0037] Further optimization scheme also includes:

[0038] The connecting port 11 is arranged at the large-diameter end of the inverted cone-shaped inner shaft 5, the first end of the exhaust rod assembly is blocked in the connecting port 11, and the second end of the exhaust rod assembly is detachably connected in the small-diameter end of the inverted cone-shaped inner shaft 5.

[0039] The raw material is wrapped around the large-diameter end and the small-diameter end of the inverted cone-shaped inner shaft 5, and the first end of the exhaust rod assembly is wrapped around the connecting port 11. When the second end of the exhaust rod assembly is not completely disassembled, that is, when the exhaust rod assembly is partially disassembled, a gap is formed between the first end of the exhaust rod assembly and the connecting port 11, air is inflated into the inverted cone-shaped inner shaft 5, and compressed gas enters between the raw material and the circumferential side of the inverted cone-shaped inner shaft 5 along the gap, thereby achieving the effect of rapid demolding.

[0040] Further optimization scheme, the exhaust rod assembly includes:

[0041] The cap-shaped part 7 is threadedly connected to the connecting port 11.

[0042] The movable exhaust rod 6 has a second end penetrating the shaft center of the cap-shaped part 7 and penetrating into the inverted cone-shaped inner shaft 5 and being detachably connected with the small-diameter end of the inverted cone-shaped inner shaft 5, and a first end abutting against the side wall of the cap-shaped part 7 away from the inverted cone-shaped inner shaft 5 and being sealingly arranged between the side wall of the cap-shaped part 7.

[0043] Before the raw material is coated, the cap-shaped part 7 is threadedly connected to the connecting port 11, so that the cap-shaped part 7 is sealed in the connecting port 11, the first end of the movable exhaust rod 6 is a plug (not marked in the figure), the diameter of the plug is greater than the diameter of the part of the movable exhaust rod 6 penetrating into the cap-shaped part 7, when the second end of the movable exhaust rod 6 is fixedly connected to the small-diameter end of the inverted conical inner shaft 5, the plug is sealed in the sidewall of the cap-shaped part 7; then the raw material is coated, the cap-shaped part 7 coated with the raw material and the inverted conical inner shaft 5 are put into the lower mold 4, and then the upper mold 8 is moved downward to the lower mold 4 to perform mold closing; after vulcanization is completed, the second end of the movable exhaust rod 6 is partially disassembled from the inverted conical inner shaft 5, when the second end of the movable exhaust rod 6 is slightly pushed, the plug is separated from the cap-shaped part 7 and is no longer sealed, a gap is formed between the plug and the cap-shaped part 7, and during inflation, compressed gas enters between the cap-shaped part 7 and the raw material and between the raw material and the outer circumferential side of the inverted conical inner shaft 5 through the gap, so that the raw material is quickly separated from the cap-shaped part 7 and the inverted conical inner shaft 5, and the purpose of rapid demolding is achieved. A sealing ring (not marked in the figure) is sleeved on the second end of the movable exhaust rod 6, and the sealing ring is located at the connection between the second end of the movable exhaust rod 6 and the small-diameter end of the inverted conical inner shaft 5, and during the inflation process, compressed gas cannot pass through the second end of the movable exhaust rod 6, that is, compressed gas can only be output from the large-diameter end of the inverted conical inner shaft 5.

[0044] Further optimization solutions also include:

[0045] The positioning column 2 is axially clamped between the upper mold 8 and the lower mold 4, and the first end of the positioning column 2 is coaxially and fixedly connected to the small-diameter end of the inverted conical inner shaft 5.

[0046] After the movable exhaust rod 6 is installed, the positioning column 2 is connected to the inverted conical inner shaft 5; the positioning column 2 is provided with an annular protrusion on the circumferential side, and the upper mold 8 and the lower mold 4 are respectively provided with a semi-annular groove, and the two groups of semi-annular grooves form an annular groove; after the upper mold 8 and the lower mold 4 are closed, the annular protrusion is fitted in the annular groove, so that the positioning column 2 and the inverted conical inner shaft 5 cannot be axially displaced; in this way, the positioning column 2 is axially clamped between the upper mold 8 and the lower mold 4, and at the same time, the inverted conical inner shaft 5 is ensured to be located at the central position between the upper mold 8 and the lower mold 4, so that the uneven wall thickness of the raw material caused by the deviation of the inverted conical inner shaft 5 from the center is avoided; after vulcanization is completed, the positioning column 2 is disassembled, and then the movable exhaust rod 6 is disassembled, so as to facilitate the inflation and demolding operation.

[0047] Further optimization solutions also include:

[0048] The guide column 10 is radially fixedly connected in the upper mold 8.

[0049] The positioning hole 12 is radially formed in the positioning column 2, and the guide column 10 is correspondingly arranged and adapted to the positioning hole 12.

[0050] The main role of the guide column 10 is to provide guidance for the upper die 8 to the lower die 4, as the upper die 8 gradually approaches the lower die 4, the guide column 10 first extends into the positioning hole 12, thereby ensuring the stability and accuracy of the molding process.

[0051] Further optimization scheme, also includes:

[0052] The balance column 1 is located outside the upper die 8 and the lower die 4, and is fixedly connected with the second end of the positioning column 2 coaxially.

[0053] After the positioning column 2 is installed, it is connected with the balance column 1, and then the raw material is wrapped on the inverted cone inner shaft 5 and placed in the lower die 4, and then the molding is completed; the main role of the balance column 1 is to balance the weight on both sides of the positioning column 2, thereby ensuring the stability of the position of the inverted cone inner shaft 5 in the upper die 8 and the lower die 4.

[0054] Further optimization scheme, also includes:

[0055] The nut 9 is threadedly sleeved on the first end of the movable exhaust rod 6, and abuts against one side of the small-diameter end of the inverted cone inner shaft 5 away from the hat-shaped part 7.

[0056] During the vulcanization process, the hat-shaped part 7 is blocked at the connecting port 11 through the threaded connection of the nut 9 and the first end of the movable exhaust rod 6. After vulcanization is completed, the nut 9 is loosened, so that the movable exhaust rod 6 can move in the hat-shaped part 7 and the inverted cone inner shaft 5, achieving the effect of partially disassembling the exhaust rod assembly.

[0057] Further optimization scheme, also includes:

[0058] The air nozzle 3 is fixedly connected in the small-diameter end of the inverted cone inner shaft 5, and is in communication with the large-diameter end of the inverted cone inner shaft 5, and the gas outlet of the gas source is connected to the gas inlet of the air nozzle 3.

[0059] The main role of the air nozzle 3 is to communicate the gas source, after vulcanization is completed and the nut 9 is loosened, the inverted cone inner shaft 5 is inflated through the air nozzle 3, and demolding is performed.

[0060] It should be noted that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like expressed in this paper indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" and the like are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0061] In the description herein, it should also be noted that unless otherwise expressly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0062] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A molding die for a conical solid rocket motor casing, characterized in that, include: An upper mold (8) and a lower mold (4) are provided correspondingly; An inverted conical inner shaft (5) is located between the upper mold (8) and the lower mold (4), and the small-diameter end of the inverted conical inner shaft (5) is connected to an air source. An exhaust rod assembly is inserted axially into the inverted conical inner shaft (5) and is detachably connected to the inverted conical inner shaft (5). The raw material covers the end of the exhaust rod assembly and the periphery of the inverted conical inner shaft (5). Also includes: Connection port (11), the connection port (11) is opened at the large diameter end of the inverted conical inner shaft (5), the first end of the exhaust rod assembly is sealed at the connection port (11), and the second end of the exhaust rod assembly is detachably connected to the small diameter end of the inverted conical inner shaft (5); The exhaust rod assembly includes: A cap-shaped component (7) is threadedly connected to the connection port (11); The movable exhaust rod (6) has its second end passing through the axis of the cap-shaped part (7) and is detachably connected to the small diameter end of the inverted conical inner shaft (5). The first end of the movable exhaust rod (6) abuts against the side wall of the cap-shaped part (7) away from the inverted conical inner shaft (5) and is sealed between the cap-shaped part (7) and the side wall of the cap-shaped part (7). Also includes: Positioning post (2), the positioning post (2) is axially engaged between the upper mold (8) and the lower mold (4), and the first end of the positioning post (2) is coaxially fixedly connected to the small diameter end of the inverted conical inner shaft (5); Also includes: Guide post (10), the guide post (10) is radially fixedly connected inside the upper mold (8); Positioning hole (12), the positioning hole (12) is radially opened on the positioning post (2), the guide post (10) is correspondingly provided with the positioning hole (12) and is adapted to the positioning hole (12); Also includes: Balance column (1), the balance column (1) is located outside the upper mold (8) and the lower mold (4), and is fixedly connected coaxially to the second end of the positioning column (2); Also includes: Nut (9) is threaded onto the first end of the movable exhaust rod (6) and abuts against the side of the small diameter end of the inverted conical inner shaft (5) away from the cap-shaped part (7).

2. The inverted conical solid rocket motor covering sleeve molding die according to claim 1, characterized in that, Also includes: The air nozzle (3) is fixedly connected to the small diameter end of the inverted conical inner shaft (5) and communicates with the large diameter end of the inverted conical inner shaft (5). The outlet of the air source is connected to the inlet of the air nozzle (3).

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