Die bottom plate for producing multiple narrow-runner impeller castings

Abstract

The utility model relates to a mold bottom plate for producing a plurality of narrow-runner impeller castings. The mold bottom plate comprises a square outer frame, a #-shaped reinforcing rib plate fixedly mounted in an inner cavity of the square outer frame, a base plate fixedly mounted at the top of the square outer frame, and mold mounting positioning holes mounted on the base plate at intervals, an anti-rotation assembly is arranged on the inner side of the mold mounting and positioning hole, and a mold anti-falling assembly is arranged on the outer side of the mold mounting and positioning hole; sand box supporting assemblies and positioning assemblies are arranged at four corners of the top surface of the base plate; according to the utility model, batch production of a plurality of narrow-runner impeller castings can be carried out, the narrow-runner impeller mold can be quickly mounted and dismounted, the production efficiency of the castings is obviously improved, the impeller mold is accurately positioned, the quality of the impeller castings is effectively controlled, and the on-site use requirements are met.

Description

Technical Field

[0001] The utility model relates to a mold bottom plate used for producing multiple narrow-channel impeller castings, belonging to the technical field of mechanical parts processing. Background Art

[0002] Impeller castings are called narrow channel impellers because of their large diameter and narrow flow channel (impeller maximum diameter φ500mm, flow channel width 5-15mm and below 5mm). Narrow channel impellers are widely used in aviation, energy, mining and other fields. Their manufacturing process requires high-precision and high-quality castings, which are difficult to cast and have high process requirements. Existing narrow channel impeller castings are usually produced in single pieces or small quantities, with low production efficiency and difficult quality control. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a mold bottom plate which is accurate in positioning and convenient in assembly and disassembly and is used for producing multiple narrow-channel impeller castings.

[0004] The utility model adopts the following technical solutions:

[0005] The utility model comprises a square outer frame, a well-shaped reinforcing rib plate fixedly installed in the inner cavity of the square outer frame, a base plate fixedly installed on the top of the square outer frame, and mold installation positioning holes installed on the base plate at intervals; an anti-rotation component is arranged on the inner side of the mold installation positioning hole, and a mold anti-detachment component is arranged on the outer side of the mold installation positioning hole; and a sand box support component and a positioning component are arranged at the four corners of the top surface of the base plate.

[0006] The mold installation positioning hole of the utility model is in a stepped shape, and the anti-rotation component is a triangular positioning protrusion arranged on the inner side of the mold installation positioning hole.

[0007] The utility model mold anti-dropping assembly comprises a bolt whose bottom is screwed on a base plate and a strip-shaped pressing plate screwed on the bolt; one end of the pressing plate is rotated to be located above the mold installation positioning hole; the bolt is tightened to make the corresponding end of the pressing plate press the mold to prevent it from falling out.

[0008] The base plate of the utility model is square, and the sand box supporting assembly comprises a triangular pad fixedly installed on each corner of the base plate, and two side edges of the triangular pad are flush with the side edges of the base plate.

[0009] The utility model positioning component comprises conical positioning pins which are installed on three corners of a base plate, and the positioning pins are arranged on the inner side of a triangular pad.

[0010] The utility model has hanging handles arranged at intervals on both side walls of a square outer frame, one end of the hanging handle is provided with an anti-drop groove and is cast-connected with the square outer frame, and the other end is columnar.

[0011] The square outer frame and the base plate of the utility model are made of ZL104 aluminum alloy.

[0012] The positive effects of the utility model are as follows: the utility model can carry out batch production of multiple narrow channel impeller castings, the utility model can be quickly installed and disassembled, the casting production efficiency is significantly improved, the impeller mold is accurately positioned, the quality of the impeller casting is effectively controlled, and the on-site use requirements are met.

[0013] The utility model is suitable for the production of narrow-channel impellers, guard plates, auxiliary impellers and stuffing box castings with a diameter of less than 500 mm. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Attached Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Attached Figure 2 This is a schematic diagram of the top view structure of the utility model;

[0016] Attached Figure 3 This is a schematic diagram of the installation structure of the well-shaped reinforcing rib plate of the utility model;

[0017] Attached Figure 4 This is a schematic diagram of the installation structure of the pressure plate of the utility model. DETAILED DESCRIPTION

[0018] As attached Figure 1-4 As shown, the utility model comprises a square outer frame 1, a tic-tac-toe reinforcing rib plate 2 fixedly mounted in the inner cavity of the square outer frame 1, a base plate 3 fixedly mounted on the top of the square outer frame 1, and mold installation positioning holes 4 installed at intervals on the base plate 3; an anti-rotation component is arranged inside the mold installation positioning hole 4, and a mold anti-slipping component is arranged outside the mold installation positioning hole 4; a sandbox support component and a positioning component are arranged at the four corners of the top surface of the base plate 3; the base plate 3 is square. Hanging handles 10 are arranged at intervals on the two side walls of the square outer frame 1, one end of the hanging handle 10 is provided with an anti-slipping groove, which is cast and connected to the square outer frame 1, and the other end is cylindrical, which is used to hang the utility model.

[0019] As attached Figure 1 , 2 As shown, the mold installation positioning hole 4 of the utility model is stepped, which is convenient for placing the impeller mold of corresponding size in the mold installation positioning hole 4. The anti-rotation component is a triangular positioning protrusion 5 arranged inside the mold installation positioning hole 4. The triangular positioning protrusion 5 is plugged into the positioning hole on the impeller mold to prevent the impeller mold from rotating and shifting. In this example, there are four mold installation positioning holes 4, so that four narrow flow channel impellers can be manufactured on the substrate 3 at one time.

[0020] As attached Figure 4As shown, the mold anti-slip assembly of the utility model includes a bolt 6 screwed on the base plate 3 at the bottom and a strip-shaped pressure plate 7 screwed on the bolt 6. One end of the pressure plate 7 is rotated to be located above the mold installation positioning hole 4. The bolt 6 is tightened to make the corresponding end of the pressure plate 7 press the impeller mold to prevent it from slipping out.

[0021] As attached Figure 1 , 2 As shown in Figure 4, the sand box support assembly of the utility model includes a triangular pad 8 fixedly installed on each corner of the base plate 3. The two side edges of the triangular pad 8 are flush with the side edges of the base plate 3 and are used to support the sand box, increase the sand intake of the sand mold to improve the rigidity of the sand mold (the sand box will be filled with mixed resin sand in its inner frame during use, and the resin sand will form a sand mold after hardening). The positioning assembly includes conical positioning pins 9 installed on the three corners of the base plate 3. The positioning pins 9 are arranged on the inner side of the triangular pad 8, that is, the positioning pins 9 are arranged between the triangular pad 8 and the mold installation positioning hole 4 to ensure accurate positioning of each sand mold and prevent misalignment and displacement.

[0022] The utility model can carry out batch production of multiple narrow-channel impeller castings, can be quickly installed and disassembled, and the casting production efficiency is significantly improved. The impeller mold is accurately positioned, and the quality of the impeller casting is effectively controlled to meet on-site use requirements.

[0023] The utility model is suitable for the production of narrow-channel impellers, guard plates, auxiliary impellers and stuffing box castings with a diameter of less than 500 mm.

Claims

1. A mold base plate for producing multiple narrow-channel impeller castings, characterized in that: It comprises a square outer frame (1), a well-shaped reinforcing rib plate (2) fixedly mounted in the inner cavity of the square outer frame (1), a base plate (3) fixedly mounted on the top of the square outer frame (1), and mold installation positioning holes (4) installed at intervals on the base plate (3); An anti-rotation component is arranged inside the mold installation positioning hole (4), and a mold anti-slipping component is arranged outside the mold installation positioning hole (4); and a sand box support component and a positioning component are arranged at the four corners of the top surface of the base plate (3).

2. A mold base plate for producing multiple narrow-channel impeller castings according to claim 1, characterized in that: The mold installation positioning hole (4) is in a stepped shape, and the anti-rotation component is a triangular positioning protrusion (5) arranged on the inner side of the mold installation positioning hole (4).

3. A mold base plate for producing multiple narrow-channel impeller castings according to claim 1 or 2, characterized in that: The mold anti-slip assembly comprises a bolt (6) whose bottom is screwed onto a base plate (3) and a strip-shaped pressing plate (7) screwed onto the bolt (6). One end of the pressing plate (7) is rotated to be located above the mold installation positioning hole (4). The bolt (6) is tightened to make the corresponding end of the pressing plate (7) press the mold to prevent it from slipping out.

4. A mold base plate for producing multiple narrow-channel impeller castings according to claim 3, characterized in that: The base plate (3) is square, and the sand box support assembly comprises a triangular pad (8) fixedly mounted on each corner of the base plate (3), and two side edges of the triangular pad (8) are flush with the side edges of the base plate (3).

5. A mold base plate for producing multiple narrow-channel impeller castings according to claim 4, characterized in that: The positioning assembly comprises conical positioning pins (9) mounted on three corners of the base plate (3); the positioning pins (9) are arranged on the inner side of the triangular pad (8).

6. A mold base plate for producing multiple narrow-channel impeller castings according to claim 5, characterized in that: Hanging handles (10) are arranged at intervals on both side walls of the square outer frame (1), one end of the hanging handle (10) is provided with an anti-drop groove and is cast-connected to the square outer frame (1), and the other end is columnar.

7. A mold base plate for producing multiple narrow-channel impeller castings according to claim 5, characterized in that: The square outer frame (1) and the base plate (3) are made of ZL104 aluminum alloy.

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