Casting mold for sand prevention hole of turbocharger compressor shell

Abstract

The utility model discloses a turbocharger compressor shell sand prevention hole casting mold which comprises a lower mold, a lower half mold cavity is formed in the lower mold, an upper mold is arranged on the lower mold, an upper half mold cavity is formed in the upper mold, a casting cavity is formed by the upper half mold cavity and the lower half mold cavity, a casting hole is formed in the upper mold, and a sand prevention hole is formed in the lower half mold cavity. A molten metal feeding mechanism is arranged on the outer side of the pouring hole, and a feeding mechanism fixing frame is arranged on the outer side of the molten metal feeding mechanism; a molten metal feeding mechanism and a molten metal feeding inclined pipe are arranged on a pouring hole, so that the distance of high-temperature molten metal entering a pouring cavity is prolonged, the flow speed of the high-temperature molten metal entering the pouring cavity is reduced, turbulent flow of the molten metal is reduced, meanwhile, a ceramic filter screen is installed in a molten metal feeding hopper, the high-temperature molten metal is filtered through the ceramic filter screen, and the high-temperature molten metal is prevented from entering the pouring cavity. Gravels and impurities contained in the device are filtered out, and the probability of sand hole generation is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to turbocharger production technical field, concretely is a kind of sand hole casting mould of turbocharger compressor casing. BACKGROUND

[0002] Turbocharger compressor casing is one of the key components of turbocharger, its main function is to accommodate and guide compressor impeller, air is compressed and sent into engine combustion chamber, to improve the intake efficiency and combustion efficiency of engine.

[0003] In the casting process of turbocharger compressor casing, sand hole is a common casting defect, mainly due to the gas in the mold cavity cannot be smoothly discharged, or the sand hole formed by the sand grain in sand mould into metal liquid, sand hole can seriously affect the strength, sealing and surface quality of casting, so effective measures must be taken to prevent the generation of sand hole. UTILITY MODEL CONTENT

[0004] (One) the technical problem solved

[0005] In view of the deficiencies of prior art, the utility model aims at providing a kind of sand hole casting mould of turbocharger compressor casing body to solve the problem that sand hole appears in the turbocharger compressor casing body in the above background technology.

[0006] (Two) technical scheme

[0007] To achieve the above object, the utility model provides the following technical scheme: a kind of sand hole casting mould of turbocharger compressor casing body, including lower mould, the lower mould is opened in lower half mold cavity, upper mould is arranged on the lower mould, the upper half mold cavity is opened in the upper mould, the upper half mold cavity and lower half mold cavity form casting cavity, pouring hole is arranged in the upper mould, metal liquid feeding mechanism is arranged on the outside of pouring hole, metal liquid feeding mechanism outside is provided with feed mechanism fixing frame;

[0008] The metal liquid feeding mechanism includes metal liquid feeding hopper, metal liquid feeding inclined pipe;Metal liquid feeding hopper is fixed on the top of feed mechanism fixing frame, metal liquid feeding inclined pipe is welded on the bottom of metal liquid feeding hopper, and metal liquid feeding inclined pipe is fixedly connected on pouring hole.

[0009] As preferred in the utility model, the bottom of metal liquid feeding hopper is provided with filter screen placing groove, and ceramic filter screen is arranged on the filter screen placing groove.

[0010] As preferred in the utility model, the outer wall of the upper half mold cavity is provided with upper exhaust passage, and the upper exhaust passage is distributed at the bending portion of the upper half mold cavity.

[0011] As the utility model is preferred, lower exhaust passage is arranged on the outer wall of the lower half cavity, and the lower exhaust passage is arranged at the bending part of the lower half cavity.

[0012] As the utility model is preferred, upper communicating holes are arranged around the upper die, lower communicating holes are arranged around the lower die, the upper communicating holes are aligned with the lower communicating holes, and connecting bolts are arranged inside.

[0013] As the utility model is preferred, positioning grooves are arranged around the contact surface of the upper die, positioning bosses are arranged around the lower die, and the positioning bosses are embedded in the positioning grooves.

[0014] As the utility model is preferred, cooling liquid pipes are arranged around the outside of the casting cavity, and the cooling liquid pipes are divided into upper and lower parts and arranged in the upper die and the lower die.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] 1、The utility model discloses a metal liquid feeding mechanism is arranged on the pouring hole, high-temperature metal liquid pours into the metal liquid feeding hopper, high-temperature metal liquid flows into the pouring hole along the metal liquid feeding inclined pipe, the metal liquid feeding inclined pipe prolongs the distance of high-temperature metal liquid entering the casting cavity, reduces the flow rate of high-temperature metal liquid entering the casting cavity, reduces the turbulent flow of metal liquid, and reduces the probability of sand hole.

[0017] 2、The utility model discloses a ceramic filter screen is installed in the metal liquid feeding hopper, the ceramic filter screen filters high-temperature metal liquid, filters out the sand and impurities contained in the inside, improves the purity of high-temperature metal liquid, thereby reducing the sand hole on the surface of metal liquid after cooling, and improving the processing quality of the air compressor shell. DRAWINGS

[0018] Figure 1 It is the overall plane structure schematic diagram of the utility model;

[0019] Figure 2 It is the enlarged plane structure schematic diagram of the metal liquid feeding mechanism of the utility model;

[0020] Figure 3 It is the plane structure schematic diagram of the utility model Figure 1 It is the enlarged plane structure schematic diagram of the place A of the utility model.

[0021] In the diagram: 1. Lower mold; 101. Lower connecting hole; 102. Positioning boss; 2. Lower half mold cavity; 201. Lower venting channel; 3. Upper mold; 301. Upper connecting hole; 302. Positioning groove; 4. Upper half mold cavity; 401. Upper venting channel; 5. Gating hole; 6. Molten metal feeding mechanism; 601. Molten metal feeding hopper; 602. Molten metal feeding inclined pipe; 603. Filter screen placement slot; 604. Ceramic filter screen; 7. Feeding mechanism fixing frame; 8. Connecting bolts; 9. Coolant pipe. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] like Figures 1 to 3 As shown, this utility model provides a casting mold for sand-proof holes in a turbocharger compressor housing, including a lower mold 1, a lower half mold cavity 2, an upper mold 3 on the lower mold 1, an upper half mold cavity 4 in the upper mold 3, the upper half mold cavity 4 and the lower half mold cavity 2 forming a casting cavity, a pouring hole 5 in the upper mold 3, a molten metal feeding mechanism 6 outside the pouring hole 5, and a feeding mechanism fixing frame 7 outside the molten metal feeding mechanism 6.

[0024] refer to Figure 1 The molten metal feeding mechanism 6 includes a molten metal feeding hopper 601 and a molten metal feeding inclined tube 602. The molten metal feeding hopper 601 is fixed on the top of the feeding mechanism fixing frame 7, and the molten metal feeding inclined tube 602 is welded to the bottom of the molten metal feeding hopper 601. The molten metal feeding inclined tube 602 is fixedly connected to the pouring hole 5.

[0025] By setting a molten metal feeding mechanism 6 on the pouring hole 5, the high-temperature molten metal is poured into the molten metal feeding hopper 601 and flows into the pouring hole 5 along the molten metal feeding inclined pipe 602. The molten metal feeding inclined pipe 602 extends the distance of the high-temperature molten metal into the casting cavity, reduces the flow rate of the high-temperature molten metal into the casting cavity, reduces the turbulence of the molten metal, and reduces the probability of sand holes.

[0026] refer to Figures 1-2 The bottom of the molten metal feed hopper 601 is provided with a filter screen placement groove 603, and a ceramic filter screen 603 is provided on the filter screen placement groove 603.

[0027] By installing the ceramic filter screen 603 in the metal liquid feeding hopper 601, the ceramic filter screen 603 filters the high-temperature metal liquid, filters out the sand, impurities contained in the interior, improves the purity of the high-temperature metal liquid, thereby reducing the sand holes on the surface of the metal liquid after cooling, and improving the processing quality of the compressor shell.

[0028] Method of use

[0029] The working principle and use process of the utility model: high-temperature metal liquid is poured in through the metal liquid feeding hopper 601, the metal liquid flows into the pouring hole 5 along the metal liquid feeding inclined pipe 602, the metal liquid feeding inclined pipe 602 prolongs the distance of the high-temperature metal liquid entering the pouring cavity, reduces the flow rate of the high-temperature metal liquid entering the pouring cavity, reduces the turbulent flow of the metal liquid, and the ceramic filter screen 603 filters the high-temperature metal liquid, filters out the sand, impurities contained in the interior, improves the purity of the high-temperature metal liquid, and then the metal liquid flows into the pouring cavity through the pouring hole 5, the air in the pouring cavity is discharged through the upper exhaust passage 401 and the lower exhaust passage 201, the air hole is reduced, and the compressor shell is cooled and formed by the cooling liquid pipe 9 surrounding the outside of the pouring cavity, and the pouring of the compressor shell is completed.

[0030] It should be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0031] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the following claims and their equivalents.

Claims

1. A casting mold for sand-proof holes in a turbocharger compressor housing, comprising a lower mold (1), characterized in that: The lower mold (1) has a lower half mold cavity (2) inside, and an upper mold (3) is provided on the lower mold (1). The upper mold (3) has an upper half mold cavity (4) inside. The upper half mold cavity (4) and the lower half mold cavity (2) form a casting cavity. The upper mold (3) has a pouring hole (5) inside. A molten metal feeding mechanism (6) is provided outside the pouring hole (5). A feeding mechanism fixing frame (7) is provided outside the molten metal feeding mechanism (6). The molten metal feeding mechanism (6) includes a molten metal feeding hopper (601) and a molten metal feeding inclined tube (602); the molten metal feeding hopper (601) is fixed on the top of the feeding mechanism fixing frame (7), and the molten metal feeding inclined tube (602) is welded to the bottom of the molten metal feeding hopper (601), and the molten metal feeding inclined tube (602) is fixedly connected to the pouring hole (5).

2. The casting mold for sand-proof holes in a turbocharger compressor housing according to claim 1, characterized in that: The bottom of the molten metal feed hopper (601) is provided with a filter screen placement groove (603), and a ceramic filter screen (604) is provided on the filter screen placement groove (603).

3. The casting mold for sand-proof holes in a turbocharger compressor housing according to claim 1, characterized in that: An upper exhaust channel (401) is provided on the outer wall of the upper half mold cavity (4), and the upper exhaust channel (401) is distributed at the bend of the upper half mold cavity (4).

4. The casting mold for sand-proof holes in a turbocharger compressor housing according to claim 1, characterized in that: The lower half mold cavity (2) has a lower exhaust channel (201) on its outer wall, and the lower exhaust channel (201) is distributed at the bend of the lower half mold cavity (2).

5. The casting mold for sand-proof holes in a turbocharger compressor housing according to claim 1, characterized in that: The upper mold (3) has an upper connecting hole (301) around its perimeter, and the lower mold (1) has a lower connecting hole (101) around its perimeter. The upper connecting hole (301) and the lower connecting hole (101) are aligned, and a connecting bolt (8) is provided inside them.

6. The casting mold for sand-proof holes in a turbocharger compressor housing according to claim 1, characterized in that: The upper mold (3) has a positioning groove (302) around its contact surface, and the lower mold (1) has a positioning boss (102) around its perimeter, which is embedded in the positioning groove (302).

7. The casting mold for sand-proof holes in a turbocharger compressor housing according to claim 1, characterized in that: The casting cavity is surrounded by a coolant pipe (9), which is divided into upper and lower parts and is installed in the upper mold (3) and lower mold (1).

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