Forming tool for full-opening heat-insulating end socket of engine
By designing a thermal sealing head molding tool for fully open engines, the combination of sliders and presses is used to solve the problem of unreliable bonding strength between the joint and the thermal insulation layer and large tolerance deviation of the thickness of the insulation layer, and a stronger bonding force and a more uniform thickness are achieved.
Patent Information
- Application Number
- CN202421290903.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-07
- Publication Date
- 2025-02-28
- Estimated Expiration
- 2034-06-07
AI Technical Summary
In the existing process, the bonding strength between the fully open joint of the engine and the insulating layer is unreliable, and the thickness tolerance of the insulating layer is relatively large.
A fully open insulated sealing head molding tooling for engines is designed, including a base, a circular boss, a first slider, a second slider and a press. Through the movement of the slider and the pressure of the presser, the joint and the thermal insulation layer are achieved and the uniform thickness are achieved.
The bonding strength between the fully open head insulation layer and the joint is significantly improved, and the uniformity of the thickness of the insulation layer in the joint is improved.
Smart Images
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Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of tooling, in particular to a molding tooling. Background Art
[0002] At present, the opening of the mainstream engine casing basically adopts an envelope structure ellipsoidal opening. Before pouring the propellant, the insulation inside the casing is polished and sprayed with a lining. The propellant is poured into the combustion chamber casing along the core rod according to the formula. This method has a long propellant construction cycle, high pouring environment requirements and high risk. After the insulation lining is completed, the fully opened rear joint combustion chamber casing can be directly coated with adhesive, and the solid fuel can be directly clamped into the combustion chamber casing to complete the assembly, which greatly saves the charging time and will greatly improve the manufacturing efficiency of weapons and equipment during wartime.
[0003] At present, the insulation layer in the fully open joint is generally pre-laid on the core mold for pre-forming and then assembled into the joint. There must be a gap between the joint and the insulation layer that needs to be filled with resin. In this process, the bonding strength between the joint and the insulation layer is unreliable, and the insulation thickness tolerance deviation is large. Utility Model Content
[0004] In view of the deficiencies in the prior art, the utility model provides a fully-opened heat-insulating head forming tool for an engine, which solves the problem of unreliable adhesion between the existing process joint and the heat-insulating layer.
[0005] The purpose of the utility model is achieved as follows: an engine full-opening insulation head forming tool, including a base, a circular boss is provided on the top of the base, a plurality of first sliders distributed along the circumferential direction are provided on the circular boss, a second slider is provided between the plurality of first sliders, the downward movement of the second slider can drive the first slider to move radially outward, a pressure block is also provided in the cavity formed between the first slider and the second slider, and the downward movement of the pressure block drives the second slider to move downward.
[0006] Furthermore, a pressure plate is provided on the top of the pressure block, and through holes are provided in the center of the pressure plate and the pressure block, and bolts are passed through the through holes, and the bolts are threadedly connected to the center of the circular boss.
[0007] Furthermore, a square platform is provided in the center of the circular boss, and the bolt is threadedly connected to the square platform.
[0008] Furthermore, the first sliding block includes a first outer surface, a first inner surface, a first top surface and a first bottom surface, the first outer surface is an arcuate surface, the first inner surface is a first inclined surface, the first top surface is a plane, and the first bottom surface is a plane and is attached to the circular boss.
[0009] Furthermore, the second sliding block includes a second outer surface, a second inner surface, a second top surface, a second bottom surface and two second side surfaces, the second outer surface is an arc-shaped surface, the second inner surface is a second inclined surface, the second top surface is a plane, the second bottom surface is a plane and is attached to the circular boss, and the two second side surfaces are inclined surfaces and are used to attach to and cooperate with the first inner surface.
[0010] Furthermore, the outer periphery of the pressing block is a plurality of inclined surfaces that match the first inner surface and the second inner surface.
[0011] Furthermore, a joint limiting block is provided on the outer periphery of the circular boss.
[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention significantly improves the bonding strength between the thermal insulation layer of the fully open head and the joint, and greatly improves the uniformity of the thermal insulation thickness in the joint. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.
[0014] Figure 1 It is a schematic diagram of the utility model structure.
[0015] Figure 2 It is a schematic diagram of the base and circular boss structure in the utility model.
[0016] Figure 3 This is a schematic diagram of the structure of the first sliding block in the utility model.
[0017] Figure 4 It is a schematic diagram of the structure of the second sliding block in the utility model.
[0018] Figure 5 This is a schematic diagram of the structure of the medium pressure block of the utility model.
[0019] Figure 6 It is a schematic diagram of assembling the utility model with the joint and the insulation layer.
[0020] Among them, 100 is a base, 200 is a circular boss, 201 is a groove, 202 is a square platform, 300 is a first slider, 301 is a first outer surface, 302 is a first inner surface, 400 is a second slider, 401 is a second outer surface, 402 is a second inner surface, 403 is a second side surface, 500 is a pressure block, 600 is a pressure plate, 700 is a bolt, 800 is a joint limit block, 901 is a joint, and 902 is an insulation layer. DETAILED DESCRIPTION
[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0022] Example 1
[0023] like Figure 1-6 The engine fully-open thermal insulation head forming tool shown in the figure includes a base 100, a circular boss 200 is provided on the top of the base 100, a plurality of first sliders 300 distributed along the circumferential direction are provided on the circular boss 200, a second slider 400 is provided between the plurality of first sliders 300, the downward movement of the second slider 400 can drive the first slider 300 to move radially outward, a pressure block 500 is also provided in the cavity formed between the first slider 300 and the second slider 400, and the downward movement of the pressure block 500 drives the second slider 400 to move downward.
[0024] Specifically, the motion cooperation between the first slider 300 and the second slider 400 , and between the second slider 400 and the pressing block 500 are all achieved through the relative motion cooperation of the inclined surfaces.
[0025] During operation, the inner ring surface of the joint 901 is cleaned and coated with glue, and the insulation layer 902 is laid on the inner ring surface of the joint 901, and then vacuumed and compacted; the compacted joint 901 insulation layer 902 assembly is then sleeved on the outer periphery of the circular boss 200; the first slider 300 is first installed on the circular boss 200, leaving a gap between it and the insulating inner surface, and then the second slider 400 and the pressure block 500 are installed, and the pressure block 500 is controlled to move downward, driving the second slider 400 to move downward, and the second slider 400 drives the first slider 300 to move radially outward until the slider contacts the rubber, gradually increasing the pressure on the pressure block 500, fixing the first slider 300 and the second slider 400 after they are in place, and sending the whole into the autoclave for curing.
[0026] Furthermore, a pressure plate 600 is provided on the top of the pressure block 500 , and through holes are provided in the center of the pressure plate 600 and the pressure block 500 . A bolt 700 passes through the through hole, and the bolt 700 is threadedly connected to the center of the circular boss 200 .
[0027] Specifically, a plurality of through holes are provided on the pressure plate 600 , and corresponding threaded holes are provided on the tops of the first slider 300 and the second slider 400 , so as to facilitate assembly and storage for future use.
[0028] It should be noted that the pressure plate 600 is driven to move downward by rotating the bolt 700 , and the pressure block 500 is driven to move downward by the pressure plate 600 , thereby realizing radial movement of the first sliding block 300 .
[0029] Furthermore, a square platform 202 is provided in the center of the circular boss 200 , and the bolt 700 is threadedly connected to the square platform 202 .
[0030] Specifically, a square hole matching with the square platform 202 is provided at the bottom of the pressing block 500 .
[0031] It should be noted that the design of the square platform 202 can shorten the requirement on the length of the bolt 700 .
[0032] Furthermore, the first slider 300 includes a first outer surface 301 , a first inner surface 302 , a first top surface and a first bottom surface. The first outer surface 301 is an arcuate surface, the first inner surface 302 is a first inclined surface, the first top surface is a plane, and the first bottom surface is a plane that fits on the circular boss 200 .
[0033] Furthermore, the second slider 400 includes a second outer surface 401, a second inner surface 402, a second top surface, a second bottom surface and two second side surfaces 403. The second outer surface 401 is an arcuate surface, the second inner surface 402 is a second inclined surface, the second top surface is a plane, the second bottom surface is a plane and is attached to the circular boss 200, and the two second side surfaces 403 are inclined surfaces and are used to attach to and cooperate with the first inner surface 302.
[0034] Specifically, the conversion between the axial motion and the radial motion is achieved through the above-mentioned features. In this embodiment, three first sliders 300 and three second sliders 400 are provided.
[0035] Furthermore, the outer periphery of the pressing block 500 is a plurality of inclined surfaces that match the first inner surface 302 and the second inner surface 402 .
[0036] Specifically, the pressing block 500 is in the shape of a hexagonal square platform 202 as a whole.
[0037] Furthermore, a joint limiting block 800 is provided on the outer periphery of the circular boss 200 .
[0038] Specifically, a groove 201 is formed on the outer periphery of the circular boss 200 , and the joint limiting block 800 is installed in the groove 201 .
[0039] It should be noted that the joint limit block 800 is used to cooperate with the joint 901 to prevent it from rotating.
[0040] The above embodiments are only used to help understand the method and core idea of the utility model. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made to the utility model without departing from the principle of the utility model, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.
Claims
1. An engine full-opening thermal insulation head forming tool, characterized in that: The invention comprises a base (100), wherein a circular boss (200) is provided on the top of the base (100), a plurality of first sliders (300) distributed in the circumferential direction are provided on the circular boss (200), a second slider (400) is provided between the plurality of first sliders (300), and the second slider (400) can drive the first slider (300) to move radially outward when the second slider (400) moves downward, and a pressing block (500) is also provided in a cavity formed between the first slider (300) and the second slider (400), and the second slider (400) can be driven to move downward when the pressing block (500) moves downward.
2. The engine full-opening thermal insulation head forming tooling according to claim 1 is characterized in that: A pressure plate (600) is provided on the top of the pressure block (500), and through holes are provided in the center of the pressure plate (600) and the pressure block (500), and a bolt (700) is passed through the through hole. The bolt (700) is threadedly connected to the center of the circular boss (200).
3. The engine full-opening insulation head forming tool according to claim 2, characterized in that: A square platform (202) is provided in the center of the circular boss (200), and the bolt (700) is threadedly connected to the square platform (202).
4. An engine full-opening thermal insulation head forming tool according to any one of claims 1 to 3, characterized in that: The first sliding block (300) comprises a first outer surface (301), a first inner surface (302), a first top surface and a first bottom surface; the first outer surface (301) is an arcuate surface, the first inner surface (302) is an inclined surface, the first top surface is a plane, and the first bottom surface is a plane, which is fitted on the circular boss (200).
5. The engine full-opening thermal insulation head forming tooling according to claim 4 is characterized in that: The second sliding block (400) comprises a second outer surface (401), a second inner surface (402), a second top surface, a second bottom surface and two second side surfaces (403); the second outer surface (401) is an arcuate surface, the second inner surface (402) is an inclined surface, the second top surface is a plane, the second bottom surface is a plane and is fitted on the circular boss (200); the two second side surfaces (403) are inclined surfaces and are used to fit the first inner surface (302) and cooperate with it.
6. The engine full-opening thermal insulation head forming tooling according to claim 5, characterized in that: The outer periphery of the pressing block (500) is a plurality of inclined surfaces that match the first inner surface (302) and the second inner surface (402).
7. An engine full-opening thermal insulation head forming tool according to any one of claims 1 to 3, characterized in that: A joint limiting block (800) is provided on the outer periphery of the circular boss (200).