A crimping tool for an electric mouthpiece rubber block and a rubber block manufacturing method

Abstract

The application belongs to the field of aviation and aerospace engine electric nozzle, and particularly relates to a crimping tool for electric nozzle glue block and a glue block manufacturing method, comprising a male die, a female die, a core rod and a base; the male die comprises a cylindrical rod and a handle at one end of the cylindrical rod, the cylindrical rod has a guide hole, the female die has an inner hole for inserting the cylindrical rod, the core rod has a cylindrical segment with the same diameter as the inner hole and a thin rod at the center of the cylindrical segment for inserting the guide hole; the female die is placed on the base, the core rod is placed in the inner hole, the bottom end of the core rod is in contact with the base, the male die is inserted into the inner hole, and the thin rod of the core rod is inserted into the guide hole of the male die; the male die, the female die and the core rod form an annular space for crimping the glue block, so that the crimping process of the electric nozzle glue block becomes a standardized and streamlined operation.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of aeronautical and aerospace engine electric nozzle, and particularly relates to a crimping tool for electric nozzle rubber block and a rubber block manufacturing method. BACKGROUND

[0002] In the processing of the electric nozzle, a heat sealing structure is adopted, and DM-308 sealing glue is filled to seal the semiconductor, insulator and metal shell, so that the electric nozzle is not gas-leaky under a certain air pressure.

[0003] The existing method for assembling the DM-308 sealing glue of the electric nozzle is as follows: 1) 308 glue powder is mixed with water according to a certain proportion, and the glue powder is stirred uniformly to prepare the glue powder; 2) the glue powder is placed on white paper, and a specified amount of the glue powder is weighed on an electronic balance and poured into the inner hole sealing part of the shell. Since the glue powder is loose, the glue powder is poured and compacted simultaneously by using a special tool. The glue powder assembled by using this method is scattered in other parts of the shell due to the assembling method, and cannot be assembled into the fixed position, so that the weight requirement of the process data cannot be met. Moreover, the length of the glue powder is relatively long, so that the glue powder is not compacted in the specified time during the heat sealing, and the gas-leaky phenomenon is prone to occur during the subsequent air tightness test of the product. Moreover, the processing cycle is time-consuming, the scrap rate is high, and the difficulty is great, which directly affects the product delivery cycle of the enterprise.

[0004] In order to solve the above problems, the tool is designed to compact the glue mold, the glue powder is processed into a shaped rubber block by the glue compacting mold, and the rubber block is directly assembled in the sealing part in the subsequent assembly process. The length of the rubber block with the same weight is obviously reduced, the operation is strong during the heat sealing, the rubber block can be assembled in place at one time, and the gas-leaky phenomenon is avoided during the subsequent air tightness test. SUMMARY

[0005] In order to solve the above problems, the application provides a crimping tool for electric nozzle rubber block, which comprises:

[0006] The male die, the female die, the core rod and the base;

[0007] The male die comprises a cylindrical rod and a handle located at one end of the cylindrical rod, the cylindrical rod has a guide hole, the female die has an inner hole into which the cylindrical rod is inserted, the core rod has a cylindrical segment with the same diameter as the inner hole and a thin rod located at the center of the cylindrical segment for inserting into the guide hole; the female die is placed on the base, the core rod is placed in the inner hole, the bottom end of the core rod is in contact with the base, the male die is inserted into the inner hole, and the thin rod of the core rod is inserted into the guide hole of the male die; the male die, the female die and the core rod form an annular space for compacting the rubber block.

[0008] Preferably, the base has a guide groove and a discharge hole, the female die slides along a straight line in the plane at the bottom end of the guide groove, and the discharge hole is located at one end of the bottom end of the guide groove. When the female die moves to the inner hole coaxial with the discharge hole, the core rod and the compacted rubber block are discharged from the discharge hole.

[0009] Preferably, the material of the base is 45 steel, and the materials of the male die, the female die and the core rod are CrWMn.

[0010] Preferably, the upper inlet of the inner hole is a funnel.

[0011] A method for manufacturing an electric mouthpiece glue block, which is manufactured by using the electric mouthpiece glue block crimping tool, and the process includes:

[0012] Sliding the female die along the guide groove to the side without the discharge hole, placing the core rod in the inner hole, and the thin rod upward;

[0013] Pouring the prepared glue powder into the inner hole, inserting the male die into the inner hole, and inserting the thin rod into the guide hole;

[0014] Applying pressure to the male die by the press to compact the glue powder into a glue block;

[0015] Sliding the female die along the guide groove to the side with the discharge hole, and pressing the male die to make the core rod and the glue block discharge from the discharge hole.

[0016] Preferably, the glue powder is prepared by mixing 308 glue powder and water in a certain proportion.

[0017] Preferably, the pressure applied by the press to the male die is 2Mpa, and the pressure is maintained for 5 seconds.

[0018] Preferably, after the glue block is taken out, it is baked in an oven at 90-110°C for 1 hour.

[0019] A method for installing an electric mouthpiece, which uses the glue block manufactured by the electric mouthpiece glue block manufacturing method to install the semiconductor and the center rod assembly to the shell head.

[0020] Suits the glue block with consistent weight and the insulator on the center rod in turn, and presses the insulator to make the glue block compacted between the semiconductor and the insulator;

[0021] Puts the assembled electric mouthpiece into a heating chamber to heat the glue block to a molten state, and presses the insulator to make the molten glue block fill the entire glue installation space;

[0022] Cooling and shaping.

[0023] The advantages of the present application include: the present application makes the pressing and assembling process of the electric mouthpiece glue block standardized and streamlined, and solves the shortcomings formed in the manual glue powder loading process, such as long processing time, poor operability, unqualified performance test, etc. The pressing and assembling tool is redesigned from the product structure to improve the product qualification rate. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a cross-sectional view of the electric mouthpiece glue block crimping tool of a preferred embodiment of the present application;

[0025] Figure 2 is a schematic view of a female die and a base cooperating with a preferred embodiment of the present application.

[0026] Figure 3 is a schematic view of an electric mouthpiece with a preferred embodiment of the present application. DETAILED DESCRIPTION

[0027] In order to make the technical solutions of the present application and its advantages clearer, the technical solutions of the present application will be further clearly and completely described in detail below in combination with the drawings. It should be understood that the specific embodiments described herein are only part of the embodiments of the present application, which are only used to explain the present application, but not to limit the present application. It should be noted that, for the convenience of description, only parts related to the present application are shown in the drawings, and other related parts can be referred to the general design. In the case of no conflict, the embodiments in the present application and the technical features in the embodiments can be combined to obtain new embodiments.

[0028] In addition, it should be further noted that, unless otherwise explicitly specified and limited, the terms such as "mounting", "connecting", "connecting" and the like used in the description of the present application should be understood in a broad sense, for example, the connection can be fixed connection, or detachable connection, or integrally connected; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through intermediate medium, or the internal communication of two elements, and those skilled in the art can understand the specific meaning of the present application according to the specific circumstances.

[0029] As shown in Figures 1-2 The present application provides a kind of electric mouthpiece rubber block crimping tool, comprising:

[0030] Male die, female die, core rod and base;

[0031] The male die includes a cylindrical rod and a handle located at one end of the cylindrical rod. The cylindrical rod has a guide hole. The female die has an inner hole for inserting the cylindrical rod. The core rod has a cylindrical segment with the same diameter as the inner hole and a thin rod located at the center of the cylindrical segment for inserting the guide hole. The female die is placed on the base, the core rod is placed in the inner hole, the bottom end of the core rod is in contact with the base, the male die is inserted into the inner hole, and the thin rod of the core rod is inserted into the guide hole of the male die. The male die, the female die and the core rod form an annular space for pressing the rubber block.

[0032] In some optional embodiments, the base has a guide groove and a discharge hole. The female die slides along a straight line in the plane at the bottom end of the guide groove. The discharge hole is located at one end of the bottom end of the guide groove. When the female die moves to the coaxial position of the inner hole and the discharge hole, the core rod and the pressed rubber block are discharged from the discharge hole.

[0033] In some optional embodiments, the material of the base is 45 steel, and the materials of the male die, the female die and the core rod are all CrWMn.

[0034] In some alternative embodiments, the upper inlet of the inner hole is a funnel.

[0035] A method for manufacturing an electric nozzle rubber block, the electric nozzle rubber block is manufactured by using the electric nozzle rubber block crimping tool, and the process includes:

[0036] Sliding the female mold to the side without the discharge hole along the guide groove, placing the core rod in the inner hole, and the thin rod upward;

[0037] Filling the prepared glue powder into the funnel-shaped part of the female mold by using a spoon, and inserting the male mold into the inner hole and the thin rod into the guide hole;

[0038] Applying pressure to the male mold by the press, adjusting the press parameter to 2 MPa, compacting by the pressure head, and keeping the pressure for 5 seconds, so that the glue powder is compacted into a rubber block;

[0039] Sliding the female mold to the side with the discharge hole along the guide groove, and pressing the male mold to make the core rod and the rubber block discharged from the discharge hole.

[0040] Placing the rubber block into a clean porcelain plate, and placing it into an oven at 100±10°C for 1 hour and taking it out.

[0041] In some alternative embodiments, the glue powder is prepared by mixing 308 glue powder and water in a certain proportion.

[0042] In some alternative embodiments, the pressure value applied to the male mold by the press is 2 MPa, and the pressure is kept for 5 seconds.

[0043] In some alternative embodiments, the rubber block is baked in an oven at 90°C-110°C for 1 hour after being taken out.

[0044] An electric nozzle installation method, as shown in Figure 3 The rubber block is manufactured by using the electric nozzle rubber block manufacturing method, the semiconductor and the center rod assembly are installed to the head of the shell;

[0045] The rubber block and the insulator are sequentially sleeved on the center rod, the insulator is pressed down, and the rubber block is compacted between the semiconductor and the insulator;

[0046] The assembled electric nozzle is placed into a heating chamber and heated to a molten state of the rubber block, and the insulator is pressed tightly to make the molten rubber block fill the entire rubber assembly space;

[0047] Cooling and shaping.

[0048] The advantages of the present application include that the present application standardizes and streamlines the pressing and assembling process of the electric nozzle rubber block, solves the shortcomings formed in the manual powder filling process, such as long processing time, poor operability, unqualified performance test, etc., and improves the product qualification rate by redesigning the pressing and assembling tool from the product structure.

[0049] The above merely provides the specific implementation of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of the changes or replacements within the technical range disclosed by the present application, which should be covered in 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 crimping fixture for an electric nozzle rubber block, characterized in that, include: Male mold (1), female mold (2), core rod (3) and base (4); The male mold (1) includes a cylindrical rod and a handle located at one end of the cylindrical rod. The cylindrical rod has a guide hole (11). The female mold (2) has an inner hole (21) for inserting the cylindrical rod. The core rod (3) has a cylindrical section with the same diameter as the inner hole (21) and a thin rod (31) located at the center of the cylindrical section for inserting into the guide hole (11). The female mold (2) is placed on the base (4). The core rod (3) is placed in the inner hole (21). The bottom end of the core rod (3) contacts the base (4). The male mold (1) is inserted into the inner hole (21). The thin rod (31) of the core rod (3) is inserted into the guide hole (11) of the male mold (1). The male mold (1), the female mold (2) and the core rod (3) form an annular space for pressing the rubber block (7). The base (4) has a guide groove (41) and a discharge hole (42). The female mold (2) slides in a straight line in the bottom plane of the guide groove (41). The discharge hole (42) is located at one end of the bottom of the guide groove (41). When the female mold (2) moves to the point where the inner hole (21) and the discharge hole (42) are coaxial, the core rod (3) and the press-fit rubber block (7) are discharged from the discharge hole (42).

2. The crimping fixture for the electric nozzle rubber block as described in claim 1, characterized in that, The base (4) is made of 45 steel, and the male mold (1), female mold (2) and core rod (3) are all made of CrWMn.

3. The crimping fixture for the electric nozzle rubber block as described in claim 1, characterized in that, The inlet of the inner hole (21) is a funnel opening.

4. A method for manufacturing an electric nozzle rubber block, characterized in that, It is manufactured using the crimping fixture for the electric nozzle rubber block as described in any one of claims 2-3, and the process includes: Slide the female mold (2) along the guide groove (41) to the side without the discharge hole (42), place the core rod (3) in the inner hole (21), with the thin rod (31) facing upward; Pour the prepared adhesive powder into the inner hole (21), insert the male mold (1) into the inner hole (21), and insert the thin rod (31) into the guide hole (11). Pressure is applied to the male mold (1) by a press to compact the rubber powder into a rubber block (7). Slide the female mold (2) along the guide groove (41) to the side with the discharge hole (42), and press the male mold (1) to make the core rod (3) and the rubber block (7) discharge from the discharge hole (42).

5. The method for manufacturing the electric nozzle rubber block (7) as described in claim 4, characterized in that, The rubber powder is prepared by mixing 308 rubber powder and water in a certain proportion.

6. The method for manufacturing the electric nozzle rubber block (7) as described in claim 4, characterized in that, The press applies a pressure of 2 MPa to the male mold (1) and holds the pressure for 5 seconds.

7. The method for manufacturing the electric nozzle rubber block (7) as described in claim 4, characterized in that, After the rubber block (7) is removed, it is baked in an oven at 90℃-110℃ for 1 hour.

8. A method for installing an electric nozzle, characterized in that, The adhesive block (7) manufactured using the method for manufacturing the electric nozzle adhesive block (7) as described in any one of claims 4-7 is characterized in that, The semiconductor (8) and center rod (9) assembly is installed to the head of the housing (5); Place the equally weighed glue block (7) and insulator (6) onto the central rod (9) in sequence, and press down on the insulator (6) to press the glue block (7) firmly between the semiconductor (8) and the insulator (6); The assembled electric nozzle is placed in the heating chamber and heated until the glue block (7) is in a molten state. At the same time, the insulator (6) is pressed to make the molten glue block (7) fill the entire glue space. Cooling and setting.

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