CN217512813U - Radius type mould for investment casting of turbine blades - Google Patents

Abstract

The utility model discloses a turbine blade is radius formula mould for investment casting, including last mould and bed die, the top of going up the mould is connected with the control roof, the bottom of bed die is installed fixed baseplate, fixed baseplate is located one side of bed die and is provided with the guide frame, the arc open-close groove has been seted up on the guide frame, the centre of a circle in arc open-close groove coincides with the centre of a circle that is located blade tenon and leaf crown in the mould, the one end of control roof is connected with the sliding pin through the connecting plate, the sliding pin is connected with arc open-close groove sliding, be provided with climbing mechanism between control roof and the fixed baseplate; the utility model discloses a setting and the arc open and close groove that is located the centre of a circle coincidence of blade tenon and leaf crown in the mould, when going up the mould and opening and shutting to one side, can rotate along the centre of a circle of blade tenon and leaf crown, shortened mould length, reduced the requirement to wax pressing equipment, the mould weight and the manufacturing cost who alleviates simultaneously.

Description

Radius type mold for investment casting of turbine blade

Technical Field

The utility model relates to an investment casting technical field, in particular to turbine blade is radius formula mould for investment casting.

Background

Turbine blade parts for gas turbines and aero-engines are all at fixed radius positions of engines, a rabbet surface and a blade shroud are all revolution surfaces, according to the structure of the parts, a wax mold of the turbine blade is usually designed as a mold opened along a radius slideway, for aero-blades and gas turbines with smaller diameters, the blade rabbet and the blade shroud are directly designed as hinge molds (as shown in figure 1) due to small radius, the position of a hinge 1 is an enlarged engine theoretical axis, namely the circle center of a blade 2 rabbet and the blade shroud in the mold, for large and heavy gas turbines, when the radius of an engine blade usually reaches more than one meter, the length of the mold adopting the hinge design exceeds the working platform of most wax presses, so that new equipment must be added for blade casting factories to produce, and the mold weight can also reach hundreds of kilograms due to the overlarge size of the mold, the cost is high, and the use convenience is low.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at provides a turbine blade is radius formula mould for investment casting can effectively solve the problem in the background art.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a turbine blade is radius formula mould for investment casting, includes mould and bed die, the top of going up the mould is connected with the control roof, PMKD is installed to the bottom of bed die, one side that PMKD is located the bed die is provided with the guide frame, the arc opening and shutting groove has been seted up on the guide frame, the centre of a circle in arc opening and shutting groove coincides mutually with the centre of a circle that is arranged in blade tenon and blade crown in the mould, the one end of control roof is connected with the sliding pin through the connecting plate, sliding pin and arc opening and shutting groove sliding connection, be provided with climbing mechanism between control roof and the PMKD.

Preferably, the jacking mechanism comprises an ejector rod, the top of the ejector rod is rotatably connected with the control top plate, the bottom of the ejector rod is rotatably connected with a sliding block, and the sliding block is slidably connected with the fixed bottom plate.

Preferably, a first telescopic motor is installed on one side of the sliding block and connected with the fixed bottom plate.

Preferably, the upper end of the arc-shaped opening and closing groove is connected with an arc-shaped limiting groove, and the concave surface of the arc-shaped limiting groove is arranged downwards.

Preferably, the fixed base plate is transversely connected with a shifting fork in a sliding mode, the sliding pin is vertically connected with the shifting fork in a sliding mode through a sliding groove, and a telescopic motor II is installed at the bottom of the shifting fork.

Preferably, a limiting plate is arranged below one side, far away from the guide frame, of the control top plate.

Compared with the prior art, the utility model discloses the beneficial effect who produces is:

1. this turbine blade is radius formula mould for investment casting, wax matrix through last mould and bed die and pressfitting preparation turbine blade, through setting up the arc open-close groove that coincides mutually with the centre of a circle that is arranged in the mould blade tenon and leaf crown, when climbing mechanism opened mould and control roof, the sliding pin of connecting on the control roof can slide along the arc open-close groove, when going up the mould and opening and shutting to one side, can rotate along the centre of a circle of blade tenon and leaf crown, mould length has been shortened, the requirement to wax pressing equipment has been reduced, the mould weight and the manufacturing cost who alleviate simultaneously, also can adopt the crane to assist the die sinking to last mould, the labor intensity is reduced, the mould processing cycle has been shortened, and convenient use simultaneously, and simple maintenance.

2. This radius formula mould for turbine blade investment casting promotes the slider through flexible motor one and removes to promote the ejector pin to push up the extension to the control roof, make it expand to one side, and cooperate with undulant fork, stir the fork and beat the sliding pin and remove along the arc open and shut groove, thereby through the cooperation of flexible motor one and flexible motor two, make the mould of going up can rotate to one side along the centre of a circle of blade tenon and blade crown.

Drawings

FIG. 1 is a schematic view of a hinged mold structure;

FIG. 2 is a schematic view of the overall structure of the present invention;

fig. 3 is a schematic view of the opening and closing structure of the upper mold of the present invention.

In the figure: 1. a hinge; 2. a blade; 3. an upper die; 4. a lower die; 5. a control top plate; 6. fixing the bottom plate; 7. a top rod; 8. a slider; 9. a first telescopic motor; 10. a limiting plate; 11. a guide frame; 12. an arc opening and closing groove; 13. a second telescopic motor; 14. a chute; 15. an arc-shaped limiting groove; 16. a connecting plate; 17. a shifting fork; 18. and a sliding pin.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present application, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application.

In the description of the present application, it should be further noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may include, for example, a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a direct connection, a connection through an intermediate medium, and a connection between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to specific circumstances.

As shown in fig. 2-3, a radius type mold for investment casting of turbine blades comprises an upper mold 3 and a lower mold 4, wherein the top of the upper mold 3 is connected with a control top plate 5, a fixed bottom plate 6 is installed at the bottom of the lower mold 4, one side of the fixed bottom plate 6, which is located at the lower mold 4, is provided with a guide frame 11, an arc-shaped opening and closing groove 12 is formed in the guide frame 11, the circle center of the arc-shaped opening and closing groove 12 coincides with the circle center of a blade tenon and a blade crown located in the mold, one end of the control top plate 5 is connected with a sliding pin 18 through a connecting plate 16, the sliding pin 18 is connected with the arc-shaped opening and closing groove 12 in a sliding manner, and a jacking mechanism is arranged between the control top plate 5 and the fixed bottom plate 6.

Through last mould and bed die and pressfitting preparation turbine blade's wax matrix, through setting up the arc open and shut groove that coincides mutually with the centre of a circle that is located blade tenon and leaf crown in the mould, when climbing mechanism will go up mould and control roof and open and shut, the sliding pin of connecting on the control roof can slide along the arc open and shut groove, when going up the mould and opening and shutting to one side, can rotate along the centre of a circle of blade tenon and leaf crown, mould length has been shortened, the requirement to wax pressing equipment has been reduced, the mould weight and the manufacturing cost who alleviates simultaneously, also can adopt the crane to assist the die sinking to last mould, the labor intensity is reduced, the mould processing cycle has been shortened, and the use is convenient, and the maintenance is simple.

As shown in fig. 2-3, in this embodiment, the jacking mechanism includes a top rod 7, the top of the top rod 7 is rotatably connected to the control top plate 5, the bottom of the top rod 7 is rotatably connected to a slide block 8, the slide block 8 is slidably connected to the fixed bottom plate 6, a first telescopic motor 9 is installed on one side of the slide block 8, and the first telescopic motor 9 is connected to the fixed bottom plate 6.

The sliding block is driven to move through the telescopic motor, so that the ejector rod is driven to drive the control top plate to open and close towards one side, the purpose of controlling the die sinking is achieved, and the stability of the whole structure can be improved through the sliding block.

As shown in fig. 2-3, in this embodiment, an arc-shaped limiting groove 15 is connected to an upper end of the arc-shaped opening and closing groove 12, a concave surface of the arc-shaped limiting groove 15 is disposed downward, a poking fork 17 is connected to the fixing base plate 6 in a transverse sliding manner, the sliding pin 18 and the poking fork 17 are vertically and slidably connected through a sliding groove 14, a second telescopic motor 13 is installed at the bottom of the poking fork 17, and a limiting plate 10 is disposed below one side of the control top plate 5, which is far away from the guide frame 11.

Promote the slider through flexible motor one and remove to promote the ejector pin and carry out the top to stretch to the control roof, make it expand to one side, and cooperate with undulant fork, stir the fork and beat the sliding pin and remove along arc open and shut groove, thereby through the cooperation of flexible motor one and flexible motor two, make the mould of going up can rotate to one side along the centre of a circle of blade tenon and leaf crown.

While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.

Claims (6)

1. The utility model provides a turbine blade is radius formula mould for investment casting, includes upper die and bed die, its characterized in that: the top of going up the mould is connected with the control roof, PMKD is installed to the bottom of bed die, one side that PMKD is located the bed die is provided with the guide frame, the arc groove of opening and shutting has been seted up on the guide frame, the centre of a circle in arc groove of opening and shutting coincides mutually with the centre of a circle that is arranged in blade tenon and blade crown in the mould, the one end of control roof is connected with the sliding pin through the connecting plate, sliding pin and arc groove sliding connection that opens and shuts, be provided with climbing mechanism between control roof and the PMKD.

2. The radius die for turbine blade investment casting of claim 1 wherein: the jacking mechanism comprises a top rod, the top of the top rod is rotatably connected with the control top plate, the bottom of the top rod is rotatably connected with a sliding block, and the sliding block is slidably connected with the fixed bottom plate.

3. The radial mold for turbine blade investment casting of claim 2 wherein: and a first telescopic motor is installed on one side of the sliding block and is connected with the fixed bottom plate.

4. The radial mold for turbine blade investment casting of claim 1 wherein: the upper end in arc switching groove is connected with the arc spacing groove, the concave surface in arc spacing groove sets up down.

5. The radial mold for turbine blade investment casting of claim 4 wherein: the fixed baseplate is transversely connected with a poking fork in a sliding mode, the sliding pin is vertically connected with the poking fork in a sliding mode through a sliding groove, and a telescopic motor II is installed at the bottom of the poking fork.

6. The radial mold for turbine blade investment casting of claim 1 wherein: and a limiting plate is arranged below one side of the control top plate, which is far away from the guide frame.

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