CN218460645U - Spherical pipe nozzle part bulging die - Google Patents

Abstract

The utility model discloses a spherical nozzle part bulging die utensil, including last membrane module, lower membrane module. The upper die assembly comprises a die handle, a round bar, an elastic male die, a supporting plate and a stepped screw; the outline dimension of the flange of the die handle is consistent with the inner diameter dimension of the blank pipe; the stepped screw is used for connecting the die shank, the elastomer male die and the supporting plate together. The lower die assembly comprises a split female die, a knob, a female die holder and a demoulding mechanism; after the two split female dies are combined, the shape characteristics of the inner cavity and the spherical nozzle part are kept consistent; the demolding mechanism comprises a top plate, a lever and a fulcrum pin shaft and is used for demolding the split female die and the part from the female die holder after the part is formed. This application utilizes the compressible expanded characteristics of the soft material of polyurethane rubber through toper assembly mould and lever demoulding mechanism, realizes the soft mould of aircraft system pipe sphere mouthpiece part high quality, low cost and takes shape the processing, has universal suitability to the whole shaping processing of the hollow protruding tripe part of sphere mouthpiece class in the aircraft structure.

Description

Spherical pipe nozzle part bulging die

Technical Field

The application relates to the technical field of aircraft manufacturing, in particular to an expansion die for a spherical nozzle part of an aircraft guide pipe.

Background

The spherical nozzle is a part positioned at the end of the conduit in the aircraft pipeline system and is in a hollow convex structure. The traditional spherical nozzle part processing method is similar to that of a guide pipe, and is generally formed by welding two symmetrical half pipes, the half pipe parts are processed and formed by special dies, and a combined welding clamp is required during welding. The traditional processing method has the advantages of complex part manufacturing process, long manufacturing period and high cost, and sometimes the surface quality of the part is directly influenced by welding factors. Therefore, a method for integrally forming and processing parts, which has the advantages of simple process, convenience in operation, low manufacturing cost and short period, needs to be considered, so that the current production situations of complex process, long period, high cost and unstable part surface quality of spherical nozzle parts are solved, and the technical requirement of high-quality processing of airplane parts is met.

Disclosure of Invention

The utility model aims at providing a spherical nozzle part bulging die utensil, applicable in the whole forming process of various spherical nozzle class hollow convex tripe parts.

In order to achieve the purpose, the invention adopts the following technical scheme to realize the purpose:

a spherical nozzle part bulging die comprises an upper die assembly and a lower die assembly, wherein the upper die assembly comprises a die shank, a round rod, an elastomer male die, a supporting plate and a stepped screw; the die handle is of a stepped cylindrical flange structure, the outline dimension of the flange is consistent with the inner diameter dimension of the blank pipe, and a stepped hole is formed in the center of the die handle; the round bar is arranged at the tail end of the die handle and is used for conveniently taking out the upper die assembly in the demolding process; the elastic body male die is cylindrical, the diameter of the elastic body male die is 0.5-1 mm smaller than the inner diameter of a blank pipe, the height of the elastic body male die is 4-6 mm larger than the height of the blank pipe, and the elastic body male die is made of 65A-hardness polyurethane rubber; the supporting plate is used for supporting the elastomer male die, the appearance of the supporting plate is consistent with that of the elastomer male die, and the side surface is provided with an 8-12-degree oblique angle, so that the elastomer male die can smoothly enter the inner shape of a blank pipe placed in the lower die assembly during working; the stepped screw is arranged in a stepped hole of the die handle and passes through the elastomer male die to be connected with a threaded hole in the center of the supporting plate, and the lower die assembly comprises a split female die, a knob, a female die holder and a demoulding mechanism; the separating surfaces of the two split female dies are butted and combined together to form an inverted cone-shaped hollow circular truncated cone shape, the shape of the inverted cone-shaped hollow circular truncated cone shape is a convex sliding fit surface with the taper of 8-12 degrees, the shape characteristics of the inner cavity and the spherical nozzle part are kept consistent, and a shoulder for placing a blank pipe is reserved at the bottom of the inner cavity; the knob is arranged on the top surface of the split female die and is used for conveniently taking out the split female die in the demoulding process; the female die holder is a base for assembling and installing two same split female dies, the shape of the base is a step cylinder, the lower part of the base is a chassis, an inner-shaped cavity is an inverted cone-shaped concave sliding surface with the taper of 8-12 degrees, the inverted cone-shaped concave sliding surface is matched and pressed with the convex sliding surfaces of the two split female dies after butt joint, the concave sliding surface of the female die holder is provided with oil discharge grooves in the radial direction and the axial direction and used for discharging lubricating oil on the convex sliding surface when the split female dies are installed at any time, a central hole is formed at the bottom of the inner-shaped cavity of the female die holder, a central through groove is formed in the back of the bottom of the chassis, a U-shaped notch is formed at one end of the central through groove, and notch platforms are respectively formed on the two sides of the chassis by taking the central through groove as symmetry and supporting point concentric holes are drilled; the demolding mechanism comprises a top plate, a lever and a fulcrum pin shaft; the top plate is of a stepped columnar structure, the size of the outer shape of the upper top block is 0.5-1 mm smaller than the bottom of the inner cavity of the die holder, and the lower tail column is arranged in a central hole at the bottom of the inner cavity of the die holder; the lever is of an L-shaped structure, is arranged in a central through groove at the back of the die holder chassis and is in sliding fit with a fulcrum pin fixed in a concentric hole of an upper fulcrum of the die holder chassis, the end of a lever resistance arm positioned below a tail post of the top plate is made into an arc surface, and the vertical end of a lever power arm is positioned in a U-shaped notch of the die holder.

Further, after the upper die assembly is assembled, the polyurethane rubber elastomer male die is pre-compressed by 0.5-1 mm through the supporting plate and the stepped screw.

Furthermore, the vertical end of a lever power arm in the demoulding mechanism of the lower mould component extends out of the upper surface of the U-shaped notch of the die holder by 10-15 mm.

The beneficial effect of this application: this application adopts toper assembly mould structure and lever demoulding mechanism device to utilize the characteristics of the soft material compressible inflation of polyurethane rubber to make the elastomer terrace die, finally realize the soft mould of aircraft system pipe sphere mouthpiece part high quality, low cost and take shape the processing, the whole shaping processing to the hollow protruding tripe part of sphere nozzle class has universal applicability in the aircraft structure.

The present application is described in further detail below with reference to the accompanying drawings and examples.

Drawings

FIG. 1 shows a structure of a blank tube;

FIG. 2 is a view of a part configuration of a spherical nozzle;

FIG. 3 is a view of a spherical nozzle part expanding mold;

FIG. 4 is an internal view of the upper die assembly;

FIG. 5 is an internal structure view of the lower die assembly;

FIG. 6 is a view showing the structure of a split female mold;

FIG. 7 shows the internal structure of the female mold base;

FIG. 8 Structure of the mold releasing mechanism

The numbering in the figures illustrates: 1. blank pipe material; 2. a spherical nozzle part; 3. an upper die assembly; 4. a lower die assembly; 5. a die shank; 6. an elastomer male die; 7. a support plate; 8. a stepped screw; 9. a flange; 10. a stepped bore; 11. a round bar; 12. a split female die; 13. a handle knob; 14. a female die holder; 15. a demolding mechanism; 16. a separating surface; 17. a convex slip-fit surface; 18. a shoulder; 19. a chassis; 20. a U-shaped notch; 21. a concave slip-on surface; 22. an oil discharge groove; 23. a central bore; 24. a central through groove; 25. a notching platform; 26. a fulcrum concentric hole; 27. a top plate; 28. a top block; 29. a tail pillar; 30. a lever; 31. a fulcrum pin shaft; 32. a power arm vertical end; 33. resistance arm end

Detailed Description

Fig. 1 to 2 are a structural view of a blank pipe 1 and a structural view of a spherical nozzle part 2.

Fig. 3 to 8 show a spherical nozzle part bulging die, which is characterized by comprising an upper die assembly 3 and a lower die assembly 4. The upper die assembly 3 comprises a die shank 5, a round rod 11, an elastomer male die 6, a supporting plate 7 and a stepped screw 8; the die handle 5 is of a stepped cylindrical flange structure, the outline dimension of the flange 9 is consistent with the inner diameter dimension of the blank pipe 1, and a step hole 10 is formed in the center of the die handle 5; the round bar 11 is arranged at the tail end of the die handle and is used for conveniently taking out the upper die assembly 3 in the demoulding process; the shape of the elastomer male die 6 is a cylinder, the diameter of the elastomer male die is 1mm smaller than the inner diameter of the blank tube 1, the height of the elastomer male die is 6mm larger than that of the blank tube 1, and the elastomer male die is made of 65A-hardness polyurethane rubber; the supporting plate 7 is used for supporting the elastomer male die 6, the appearance of the supporting plate is consistent with that of the elastomer male die 6, and the side surface is provided with a bevel angle of 10 degrees, so that the elastomer male die 6 can smoothly enter the inner shape of the blank pipe 1 placed in the lower die assembly 4 during working; the stepped screw 8 is arranged in a stepped hole 10 of the die shank 5 and penetrates through the elastomer male die 6 to be connected with a threaded hole in the center of the supporting plate 7. The lower die assembly 4 comprises a split female die 12, a knob 13, a female die holder 14 and a demoulding mechanism 15; the separating surfaces 16 of the two split female dies 12 are butted and combined together to form a shape of an inverted cone-shaped hollow circular truncated cone, the shape of the inverted cone-shaped hollow circular truncated cone is a convex sliding fit surface 17 with the taper of 10 degrees, the shape characteristics of the inner cavity and the spherical nozzle part 2 are kept consistent, and a shoulder 18 for placing the blank pipe 1 is reserved at the bottom of the inner cavity; the knob 13 is arranged on the top surface of the split female die 12 and is used for conveniently taking out the split female die 12 in the demoulding process; the female die holder 14 is a base for assembling and installing two identical split female dies 12, the shape of the base is a step cylinder, the lower part of the base is a chassis 19, an inner-shaped cavity is an inverted cone-shaped concave sliding surface 21 with the taper of 10 degrees, the inverted cone-shaped concave sliding surface 21 is matched and pressed with the convex sliding surface 17 of the two split female dies 12 after being butted, the concave sliding surface 21 of the female die holder 14 is radially and axially provided with oil discharge grooves 22 for discharging lubricating oil on the convex sliding surface 17 when the split female dies 12 are installed at any time, the bottom of the inner-shaped cavity of the female die holder 14 is provided with a central hole 23, the back of the bottom of the chassis 19 is provided with a central through groove 24, one end of the central through groove 24 is provided with a U-shaped notch 20, and the two sides of the chassis 19 are respectively provided with a notch platform 25 and a fulcrum concentric hole 26 by taking the central through groove 24 as symmetry; the demoulding mechanism 15 comprises a top plate 27, a lever 30 and a fulcrum pin 31; the top plate 27 is a stepped columnar structure, the size of the outer shape of the upper top block 28 is 1mm smaller than that of the bottom of the inner cavity of the die holder 14, and the lower tail column 29 is arranged in the central hole 23 at the bottom of the inner cavity of the die holder 14; the lever 30 is of an L-shaped structure, is arranged in a central through groove 24 at the back of a chassis 19 of the die holder 14, is in sliding fit with a fulcrum pin 31 fixed in a concentric hole 26 at an upper fulcrum of the chassis 19 of the die holder 14, the end 33 of a lever resistance arm positioned below a tail post 29 of a top plate is made into an arc surface, and the vertical end 32 of a lever power arm is positioned in a U-shaped notch 20 of the die holder 14.

After the upper die assembly 3 is assembled, the polyurethane rubber elastomer male die 6 is pre-compressed by 0.5-1 mm through the supporting plate 7 and the stepped screw 8.

The vertical end of a lever power arm in the demoulding mechanism of the lower mould component 4 extends 10-15 mm out of the upper surface of a U-shaped notch 20 of the concave mould base 14.

When the device works, a blank pipe 1 is placed in an inner cavity of the split female die 12 in the lower die assembly 4, and then the upper die assembly 3 is placed in the blank pipe 1 to form an inner shape; the tail end of the die shank 5 is vertically pressed downwards by a press machine, the upper half part of the blank tube 1 is supported by the two-way of the appearance of the flange 9 of the die shank 5 and the inner shape of the split female die 12 and does not deform, the lower half part of the blank tube 1 expands outwards along the radial direction due to the axial compression of the elastomer male die 6, the inner wall of the blank tube 1 expands outwards under the pressure, the blank tube 1 deforms, the outer shape of the blank tube is tightly attached to the inner cavity of the split female die 14, and finally the spherical nozzle part 2 is formed. Unloading the press machine, and taking out the upper die assembly 3; the vertical end 32 of a power arm of a lever 30 in the demoulding mechanism 15 is hit downwards, and the end 33 of a lever resistance arm hits a tail post 29 of a top plate upwards, so that the top plate 27 is transmitted to the bottom surface of the split female die 12, and looseness is generated between the split female die 12 and the female die holder 14; the split cavity die 12 containing the spherical nozzle part 2 is taken out from the lower die holder 14 by the knob 13, and the spherical nozzle part 2 is taken out by separating the two split cavity dies 12.

Claims (3)

1. A spherical nozzle part bulging die is characterized by comprising an upper die assembly and a lower die assembly, wherein the upper die assembly comprises a die shank, a round rod, an elastic body male die, a supporting plate and stepped screws; the die handle is of a stepped cylindrical flange structure, the outline dimension of the flange is consistent with the inner diameter dimension of the blank pipe, and a stepped hole is formed in the center of the die handle; the round bar is arranged at the tail end of the die handle and is used for conveniently taking out the upper die assembly in the demolding process; the elastic body male die is cylindrical, the diameter of the elastic body male die is 0.5-1 mm smaller than the inner diameter of a blank pipe, the height of the elastic body male die is 4-6 mm larger than the height of the blank pipe, and the elastic body male die is made of 65A-hardness polyurethane rubber; the supporting plate is used for supporting the elastomer male die, the appearance of the supporting plate is consistent with that of the elastomer male die, and the side surface is provided with an 8-12-degree oblique angle, so that the elastomer male die can smoothly enter the inner shape of a blank pipe placed in the lower die assembly during working; the stepped screw is arranged in a stepped hole of the die handle and penetrates through the elastomer male die to be connected with a threaded hole in the center of the supporting plate, and the lower die assembly comprises a split female die, a knob, a female die holder and a demoulding mechanism; the separating surfaces of the two split female dies are butted and combined together to form an inverted cone-shaped hollow circular truncated cone shape, the shape of the inverted cone-shaped hollow circular truncated cone shape is a convex sliding fit surface with the taper of 8-12 degrees, the shape characteristics of the inner cavity and the spherical nozzle part are kept consistent, and a shoulder for placing a blank pipe is reserved at the bottom of the inner cavity; the knob is arranged on the top surface of the split female die and is used for conveniently taking out the split female die in the demoulding process; the female die holder is a base for assembling and installing two same split female dies, the shape of the base is a step cylinder, the lower part of the base is a chassis, an inner-shaped cavity is an inverted cone-shaped concave sliding surface with the taper of 8-12 degrees, the inverted cone-shaped concave sliding surface is matched and pressed with the convex sliding surfaces of the two split female dies after butt joint, the concave sliding surface of the female die holder is provided with oil discharge grooves in the radial direction and the axial direction and used for discharging lubricating oil on the convex sliding surface when the split female dies are installed at any time, a central hole is formed at the bottom of the inner-shaped cavity of the female die holder, a central through groove is formed in the back of the bottom of the chassis, a U-shaped notch is formed at one end of the central through groove, and notch platforms are respectively formed on the two sides of the chassis by taking the central through groove as symmetry and supporting point concentric holes are drilled; the demolding mechanism comprises a top plate, a lever and a fulcrum pin shaft; the top plate is of a stepped columnar structure, the size of the outer shape of the upper top block is 0.5-1 mm smaller than the bottom of the inner cavity of the die holder, and the lower tail column is arranged in a central hole at the bottom of the inner cavity of the die holder; the lever is of an L-shaped structure, is arranged in a central through groove in the back of the base plate of the die holder and is in sliding fit with a fulcrum pin shaft fixed in a concentric hole of an upper fulcrum of the base plate of the die holder, the end of a resistance arm of the lever positioned below a tail post of the top plate is made into an arc surface, and the vertical end of a power arm of the lever is positioned in a U-shaped notch of the die holder.

2. The spherical nozzle part bulging die of claim 1, wherein after the upper die assembly is assembled, the polyurethane rubber elastomer male die is pre-compressed by 0.5-1 mm through the supporting plate and the stepped screw.

3. The spherical nozzle part bulging die of claim 1, wherein a vertical end of a lever power arm in a demoulding mechanism of the lower die assembly extends 10-15 mm above an upper surface of a U-shaped notch of the die holder.

Images