Sealing assembly bonding tool

Abstract

A sealing assembly bonding tool comprises a fixed core, a limiting sleeve and a pressing block, the fixed core is arranged below a sealing assembly, the limiting sleeve is arranged outside the fixed core and the sealing assembly in a sleeving mode, the pressing block is arranged above the sealing assembly and presses the sealing assembly, and a first-stage circular truncated cone and a second-stage circular truncated cone are arranged above the fixed core. The bottom and the inner side of a sealing ring of the sealing assembly are matched with the outer edge formed by combining the first-stage circular truncated cone and the second-stage circular truncated cone in a step shape. Due to the fact that the fixed core and the limiting sleeve are adopted to conduct circumferential positioning on the sealing ring, the aluminum foil and the sealing ring of the sealing assembly, the positioning cavity formed after the fixed core and the limiting sleeve are assembled restrains deviation in the circumferential direction after the three parts of the sealing assembly are bonded, the coaxiality of the three parts in the sealing assembly is improved, consistency is good, and the sealing assembly is not prone to deformation. The risk of airtight leakage of launching device products is reduced, the sealing performance and the reliability of the products are improved, the device is suitable for bonding of sealing assemblies of various types of launching device products, assembling is easy, and time and labor are saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to aviation device auxiliary tool technical field, especially in a kind of sealing assembly bonding tool. BACKGROUND

[0002] In the technical specification of certain type launch device product, the air tightness of launch device product has strict requirement, product is first pumped to make product reach certain vacuum degree, then it is inflated to certain positive pressure, keep 10min, pressure leakage is not higher than 2.9KPa. In order to guarantee the performance, launch device product is sealed in multiple parts, when sealing assembly is used to seal product in its tail, both the sealing property of product and the tail structure that can be quickly broken by air flow in use are satisfied, to ensure normal work of product. In prior art, the above sealing assembly is composed of sealing ring 2, aluminum foil 3, sealing ring 4 three parts, wherein the thickness of aluminum foil is 0.15mm, and epoxy resin is used to adhere between sealing ring and sealing ring. Figure 1 、 Figure 2 Therefore, adhesion is particularly important for sealing property, and if the adhesion method is unreliable, it will lead to unqualified sealing property of product, and has great influence on the performance of product, and the traditional adhesion method of the three is to uniformly apply epoxy resin adhesive to the adhesion parts of the three, and then manually adjust the position to complete the adhesion, but this adhesion method has the following disadvantages: since the sealing ring, aluminum foil and sealing ring are all circular, manual adjustment is adopted during adhesion, the coaxiality of the three cannot be guaranteed, and the consistency is poor, so it is possible that product appears air leakage or subsequent assembly is difficult, and a series of problems affect the performance of the whole product. SUMMARY

[0003] The utility model aims at providing a sealing assembly bonding tool with simple structure, convenient adhesion and firmness and reliability to overcome the deficiencies of the prior art.

[0004] The technical scheme adopted by the utility model is as follows: a sealing assembly bonding tool, which comprises a fixed core, a limiting sleeve and a pressing block, the fixed core is arranged below the sealing assembly, the limiting sleeve is sleeved outside the fixed core and the sealing assembly, and the pressing block is arranged above the sealing assembly to press the sealing assembly.

[0005] The further technical scheme is that the fixed core is in the shape of a cylinder, a first circular platform is arranged above the fixed core, a second circular platform is arranged above the first circular platform, the sealing ring of the sealing assembly is sleeved outside the first circular platform and the second circular platform, and the bottom and inner side of the sealing ring are adapted to the step-shaped outer edge formed by the first circular platform and the second circular platform.

[0006] Further, the pressing block is in the shape of a cylinder, a convex platform is arranged below the pressing block, when the pressing block presses the sealing assembly, the convex platform is inserted into the sealing ring of the sealing assembly, and the sealing ring is pressed at the outer edge below the pressing block on the outer side of the convex platform.

[0007] Furthermore, the outer edge of the first-stage frustum is arc-shaped.

[0008] By adopting the above technical solution, the sealing component bonding fixture of this utility model has the following beneficial effects:

[0009] 1. Because this utility model uses a core fixing sleeve and a limiting sleeve to circumferentially position the sealing ring, aluminum foil and sealing ring of the sealing assembly, the positioning cavity formed after the two are assembled constrains the circumferential offset of the three parts of the sealing assembly after bonding, which improves the coaxiality of the three parts in the sealing assembly, has good consistency, reduces the risk of airtight leakage of the launch device product, improves the sealing performance and reliability of the product, is suitable for bonding sealing assemblies of multiple models of launch device products, and has a wide range of applications;

[0010] 2. This utility model has a simple structure and is easy to assemble. Simply place the sealing ring, aluminum foil, and sealing ring into the positioning cavity formed by the core and limiting sleeve of the bonding fixture, and then fix the bonded sealing component by the pressure block to ensure that the sealing component is firmly and reliably bonded after the epoxy resin adhesive has cured. Only one person is needed to complete the bonding of the sealing component, which is simple, time-saving and labor-saving.

[0011] The technical features of a sealing component bonding fixture of this utility model will be further described below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of a sealing assembly structure installed at the tail of a launching device in the prior art.

[0013] Figure 2 for Figure 1 Enlarged view of part A;

[0014] Figure 3 This is a schematic diagram of the bonding fixture structure for a sealing component according to the present invention;

[0015] Figure 4 for Figure 3 Enlarged view of Part B;

[0016] Figure 5 This is a schematic diagram of the pressing block structure of this utility model;

[0017] Figure 6 This is a schematic diagram of the core-fixing structure of this utility model;

[0018] Figure 7 This is a schematic diagram of the process structure of step (1) of the embodiment of this utility model;

[0019] Figure 8 This is a schematic diagram of the process structure of step (2) of this utility model embodiment;

[0020] Figure 9 For the process structure schematic diagram of step (3), (4) of the embodiment of the utility model;

[0021] Figure 10 For the process structure schematic diagram of step (5) of the embodiment of the utility model.

[0022] In the drawing:

[0023] 1 - briquetting, 11 - boss, 2 - sealing ring, 3 - aluminum foil, 4 - sealing ring, 5 - limit sleeve, 6 - fixed core, 61 - first circular platform, 62 - second circular platform. Specific embodiments

[0024] Embodiments

[0025] A kind of sealing assembly bonding tool, as shown in Figure 3 Including fixed core 6, limit sleeve 5 and briquetting 1;

[0026] The fixed core 6 is cylindrical, placed below sealing assembly, first circular platform 61 is provided above fixed core 6, the outer edge of first circular platform 61 is arc, second circular platform 62 (see Figure 6 ) is provided above first circular platform 61, sealing ring 4 of the sealing assembly is sleeved on the outer of first circular platform 61 and second circular platform 62, the bottom and inner side of sealing ring 4 are combined with the outer edge step shape formed by first circular platform 61 and second circular platform 62, as shown in Figure 4 The bottom arc of sealing ring is attached to the outer arc of first circular platform, the lower side of sealing ring is attached to the upper side of first circular platform, and the inner side of sealing ring is attached to the outer edge of second circular platform;

[0027] The limit sleeve 5 is sleeve-shaped, is sleeved on fixed core 6 and sealing assembly (i.e. limit sleeve 5 is sleeved on the outer of fixed core 6, and a positioning cavity is formed above fixed core 6 and limit sleeve 5, and sealing assembly is placed in the positioning cavity), as shown in Figure 3 、 Figure 4 The inner wall of limit sleeve 5 is attached to the outer edge of fixed core 6, sealing ring 4 and sealing ring 2 from bottom to top respectively;

[0028] As shown in Figure 3 、 Figure 5 The briquetting 1 is cylindrical, is placed above sealing assembly, and presses sealing assembly, and the boss 11 is inserted into the sealing ring 2 of sealing assembly when the briquetting 1 presses sealing assembly, and the outer side of boss is pressed below the outer edge of sealing ring 2.

[0029] Specific assembly steps are as follows:

[0030] (1) sealing ring 4 is sleeved on the outer of circular platform above fixed core 6, and epoxy resin adhesive is evenly applied on the adhesive surface of sealing ring (see Figure 7 ).

[0031] (2) Put the limiting sleeve 5 into the sealing ring 4 (see Figure 8 );

[0032] (3) Put the aluminum foil 3 on the sealing ring 4, and ensure that the aluminum foil is completely in the limiting sleeve 5;

[0033] (4) After evenly applying epoxy resin glue on the bonding surface of the sealing ring 2, bond the aluminum foil 3 and clean the excess glue (see Figure 9 );

[0034] (5) Use the pressing block 1 to press the sealing ring 2, and fix the sealing assembly (see Figure 10 );

[0035] (6) Curing for 24 hours, and completing the bonding.

[0036] The above examples are only preferred embodiments of the present application, and the structure of the present application is not limited to the forms listed in the above examples. Any modification, equivalent replacement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A seal assembly bonding fixture, characterized by: The tool includes a core (6), a limiting sleeve (5) and a pressing block (1), the core (6) is arranged below the sealing assembly, the limiting sleeve (5) is sleeved on the core (6) and the sealing assembly, and the pressing block (1) is arranged above the sealing assembly and presses the sealing assembly.

2. A seal assembly bonding tool according to claim 1, wherein: The core (6) is in a cylindrical shape, a first circular platform (61) is arranged above the core (6), a second circular platform (62) is arranged above the first circular platform (61), the sealing ring (4) of the sealing assembly is sleeved on the first circular platform (61) and the second circular platform (62), and the bottom and the inner side of the sealing ring (4) are adapted to the step-shaped outer edge formed by the first circular platform (61) and the second circular platform (62).

3. The seal assembly bonding tooling of claim 1, wherein: The pressing block (1) is in a cylindrical shape, a convex platform (11) is arranged below the pressing block (1), when the pressing block (1) presses the sealing assembly, the convex platform (11) is inserted into the sealing ring (2) of the sealing assembly, and the outer side of the convex platform (11) presses the sealing ring (2) at the outer edge below the pressing block (1).

4. The seal assembly bonding tooling of claim 2, wherein: The outer edge of the first circular platform (61) is in an arc shape.

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