CN221639451U - Casting die of refrigerator compressor crankcase - Google Patents

Abstract

The utility model discloses a casting mold for a refrigerator compressor crankcase, including a pouring cup, the pouring cup is inserted into a horizontal runner, the two sides of the bottom of the horizontal runner are connected to vertical runners, and the vertical runners are connected to the mold cavity through a water inlet. The utility model blocks sand and buffers molten iron through a horizontal runner and a plurality of flow blocking overlaps, avoiding defects such as sand holes and pores caused by excessive filling of the mold, thereby ensuring the appearance of the casting; the excess molten iron entering the mold cavity overflows through the shrinkage feeding riser, and the shrinkage feeding riser pulls out the internal heat node of the casting to avoid shrinkage and depression of the casting; the fracture groove is 1.5 mm away from the casting to ensure that the water inlet remains relatively flat when the casting is separated, reducing the amount of casting grinding and reducing the grinding cost.

Description

A casting mold for refrigerator compressor crankcase

Technical Field

The utility model relates to the technical field of casting moulds, in particular to a casting mould for a refrigerator compressor crankcase.

Background Art

Announcement No.: CN218425441U, published Chinese patent, specifically a pouring system for a crankcase, including a sand mold for a case body, a sprue is vertically arranged on the sand core on the rear end face of the sand mold for the case body, the lower end of the sprue is connected to the cross runner, and a plurality of groups of inner gates are symmetrically extended upward on both sides of the cross runner, the upper end of the cross runner and the first U-shaped groove at the bottom end of the crankcase are arranged opposite to each other, the two sides of the crankcase are thin-walled, the inner gate is arranged at the bottom of the crankcase and on the middle thick wall on both sides of the first U-shaped groove, and is connected to the mold cavity through the inner gate.

However, there are the following defects: there are sand holes, air holes, depressions, etc. on the surface of the casting; there is shrinkage inside the casting; there are many residues at the water inlet and the grinding cost is high.

Utility Model Content

The utility model aims to provide a casting mold for a refrigerator compressor crankcase, which has the advantages of no defects such as sand holes and pores on the casting surface, no shrinkage inside the casting, little water inlet residue, and low grinding cost, thereby solving the problems in the prior art.

To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a casting mold for a refrigerator compressor crankcase, comprising a pouring cup, wherein the pouring cup penetrates into a horizontal runner, and the two sides of the bottom of the horizontal runner are connected to vertical runners, and the vertical runners are connected to the cavity through a water inlet.

Preferably, the vertical runner includes a left vertical runner and a right vertical runner; the left vertical runner is arranged on one side of the bottom of the horizontal runner, and the cavities are distributed in rows of two on both sides of the left vertical runner, and the two cavities in each row are distributed symmetrically around the center; the right vertical runner is arranged on the other side of the bottom of the horizontal runner, and the cavities are distributed on the same side of the right vertical runner.

Preferably, a plurality of shrinkage feed risers are provided on the left vertical runner and the right vertical runner, and the shrinkage feed risers are provided beside the water inlet.

Preferably, a plurality of flow-blocking overlaps are provided on the left vertical runner and the right vertical runner, and the flow-blocking overlaps are located between two adjacent cavities in the upper and lower directions.

Preferably, the height of the pouring cup is 55 mm.

Preferably, the fracture groove of the water inlet is 1.5 mm away from the casting.

Preferably, the height of the feeding riser is 20 mm.

Compared with the prior art, the beneficial effects of the utility model are as follows: molten iron flows from the pouring cup into the cross runner, the cross runner can effectively buffer the molten iron, and a number of flow-blocking overlaps arranged in the left vertical runner and the right vertical runner also block sand and buffer the molten iron, avoiding excessive filling that causes sand particles to be drawn into the cavity to form defects such as sand holes and pores, thereby ensuring the appearance of the casting; excess molten iron entering the cavity overflows through the shrinkage feed riser, and the shrinkage feed riser pulls out the hot nodes inside the casting to avoid shrinkage and depression of the casting; the fracture groove is 1.5 mm away from the casting, which can ensure that the water inlet residue is relatively flat when the casting is separated, reducing the amount of casting grinding and reducing the grinding cost.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is a front view of the utility model;

Fig. 2 is a perspective view of the utility model;

FIG. 3 is an axonometric view of the present invention.

In the figure: 1. pouring cup; 2. horizontal runner; 3. vertical runner; 31. left vertical runner; 32. right vertical runner; 4. cavity; 5. water inlet; 6. shrinkage feed riser; 7. flow-blocking overlap.

DETAILED DESCRIPTION

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.

In order to solve the problems existing in the prior art such as defects such as sand holes and pores on the casting surface, shrinkage inside the casting, large amount of water inlet residues, and high grinding cost, the following technical solution is provided, please refer to Figures 1-3;

A casting mold for a refrigerator compressor crankcase comprises a pouring cup 1, the pouring cup 1 penetrates into a horizontal runner 2, both sides of the bottom of the horizontal runner 2 are connected to vertical runners 3, and the vertical runners 3 are connected to a cavity 4 through a water inlet 5.

The vertical runner 3 includes a left vertical runner 31 and a right vertical runner 32; the left vertical runner 31 is arranged on one side of the bottom of the horizontal runner 2, and the cavities 4 are distributed in rows of two on both sides of the left vertical runner 31, and the two cavities 4 in each row are distributed symmetrically around the center; the right vertical runner 32 is arranged on the other side of the bottom of the horizontal runner 2, and the cavities 4 are distributed on the same side of the right vertical runner 32.

Specifically, the molten iron flows from the pouring cup 1 to the cross runner 2, the cross runner 2 can effectively buffer the molten iron and guide the molten iron into the left vertical runner 31 and the right vertical runner 32 on both sides of the bottom of the cross runner 2; the left vertical runner 31 and the right vertical runner 32 receive the molten iron drained by the cross runner 2, and guide the molten iron into the mold cavity 4 through the water inlet 5.

A plurality of flow-blocking overlaps 7 are provided on the left vertical runner 31 and the right vertical runner 32 . The flow-blocking overlaps 7 are located between two adjacent cavities 4 .

Specifically, the molten iron passes through a plurality of flow-blocking overlaps 7 in the left vertical pouring channel 31 and the right vertical pouring channel 32 , and the flow-blocking overlaps 7 block sand and buffer the molten iron to prevent sand from being drawn into the mold cavity 4 to form sand holes due to excessively fast filling.

A plurality of feeding risers 6 are provided on the left vertical runner 31 and the right vertical runner 32 . The feeding risers 6 are provided beside the water inlet 5 .

The height of the feeding riser 6 is 20 mm.

Specifically, the excess molten iron entering the mold cavity 4 overflows through the feeding riser 6, and the feeding riser 6 pulls out the internal hot spots of the casting to prevent the casting from shrinking and sinking.

The height of the pouring cup 1 is 55 mm.

Specifically, the pouring cup 1 with a height of 55 mm can effectively improve the quality of the casting.

The fracture groove of the water inlet 5 is 1.5 mm away from the casting.

Specifically, the fracture groove is 1.5 mm away from the casting, which can ensure that the remaining water inlet 5 is relatively smooth when the casting is separated, thereby reducing the amount of grinding of the casting.

Working principle: molten iron flows from the pouring cup 1 to the cross runner 2, and is guided into the left vertical runner 31 and the right vertical runner 32 on both sides of the bottom of the cross runner 2. The flow-blocking overlap 7 provided in the left vertical runner 31 and the right vertical runner 32 blocks sand and buffers the molten iron. The molten iron is filled into the mold cavity 4 through the water inlet 5, and the excess molten iron overflows through the shrinkage-feeding riser 6 to avoid shrinkage and depression of the casting. The fracture groove of the water inlet 5 is 1.5 mm away from the casting to ensure the residual flatness of the water inlet 5 when the casting is separated.

It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims (4)

1. A casting mold for a refrigerator compressor crankcase, comprising a pouring cup (1), characterized in that the pouring cup (1) penetrates into a horizontal runner (2), the two sides of the bottom of the horizontal runner (2) are connected to vertical runners (3), the vertical runner (3) is connected to a mold cavity (4) through a water inlet (5), and the vertical runner (3) comprises a left vertical runner (31) and a right vertical runner (32); the left vertical runner (31) is arranged on one side of the bottom of the horizontal runner (2), and the mold cavities (4) are distributed in a row of two on both sides of the left vertical runner (31), The two cavities (4) in each row are centrally symmetrically distributed; the right vertical runner (32) is arranged on the other side of the bottom of the horizontal runner (2), and the cavities (4) are distributed on the same side of the right vertical runner (32); a plurality of shrinkage feed risers (6) are arranged on the left vertical runner (31) and the right vertical runner (32), and the shrinkage feed risers (6) are arranged beside the water inlet (5); a plurality of flow blocking overlaps (7) are arranged on the left vertical runner (31) and the right vertical runner (32), and the flow blocking overlaps (7) are located between two upper and lower adjacent cavities (4). 2. A casting mold for a refrigerator compressor crankcase according to claim 1, characterized in that the height of the pouring cup (1) is 55 mm. 3. A casting mold for a refrigerator compressor crankcase according to claim 2, characterized in that the fracture groove of the water inlet (5) is 1.5 mm away from the casting. 4. A casting mold for a refrigerator compressor crankcase according to claim 3, characterized in that the height of the feeding riser (6) is 20 mm.