CN204276821U - Air compressor cylinder sand core structure - Google Patents

Abstract

The utility model relates to an air compressor cylinder sand core structure, which comprises an arc-shaped main body, an arc-shaped connecting part integrally connected with the end of the arc-shaped main body and forming an obtuse angle with it, and the arc-shaped connecting part is integrally provided with Two symmetrical cylindrical core heads, the cylindrical core heads run through and are perpendicular to the arc-shaped connection part, the distance between one end of the two cylindrical core heads is greater than the distance between the other ends, and the distance between the two cylindrical core heads is relatively small The small end is integrally provided with a plurality of protrusions, and it also includes two first loose pieces that are clamped on the protrusions and matched with the cylindrical core head and clamped between the first loose pieces. And the second movable block that can be pulled out. By clamping the first loose piece matched with it on the protrusion of the cylindrical core head, and setting the second loose piece between the two first loose pieces, the first loose piece and the second loose piece can be easily moved from The separation of the sand core structure is beneficial to the overall molding of the sand core structure and is conducive to reducing the overall number of sand cores in the air compressor cylinder casting.

Description

Air compressor cylinder sand core structure

technical field

The utility model belongs to the field of mechanical casting and relates to a sand core structure, in particular to an air compressor cylinder sand core structure.

Background technique

Air compressor is the abbreviation of air compressor. It is the basic product of industrial modernization. It is the core equipment of the pneumatic system, which is the core equipment of the pneumatic system. A device that generates gas pressure energy is a gas pressure generating device that compresses air. Piston air compressor is a kind of air compressor. When the reciprocating piston in the cylinder moves to the right, when the pressure in the left chamber of the piston in the cylinder is lower than the atmospheric pressure, the suction valve opens and the outside air is sucked into the cylinder. , this process is called the compression process; when the pressure in the cylinder is higher than the pressure in the output air pipe, the exhaust valve opens. The cylinder is an important part of the piston air compressor, and its performance directly affects the quality of the piston air compressor. With the continuous optimization of the structure of the air compressor, its cylinder structure is also developing towards a complex and integrated direction, so that the corresponding sand core structure is also becoming more and more complicated, which makes the production of the sand core structure more and more difficult, even Difficult to remove from core box.

Contents of the invention

The purpose of the utility model is to provide an air compressor cylinder sand core structure in order to overcome the deficiencies of the prior art.

In order to achieve the above purpose, the technical solution adopted by the utility model is: an air compressor cylinder sand core structure, which includes an arc-shaped main body, an arc-shaped connecting part integrally connected with the end of the arc-shaped main body and forming an obtuse angle with it, Two symmetrical cylindrical core heads are integrally arranged on the arc-shaped connecting part, the cylindrical core heads run through and are perpendicular to the arc-shaped connecting part, and the distance between one end of the two cylindrical core heads is greater than the distance between the other ends One end of the two cylindrical core heads with a small distance is integrally provided with a plurality of protrusions, and it also includes two first movable blocks and a clamping joint on the protrusions and matched with the cylindrical core heads. A detachable second movable block is arranged between the first movable blocks.

Preferably, the protrusion is rotationally symmetrical about the axis of the cylindrical core.

Preferably, the other end of the arc-shaped main body is provided with a plurality of engaging grooves.

Preferably, the first movable block is provided with a groove matching the protrusion.

Due to the application of the above technical solutions, the utility model has the following advantages compared with the prior art: the utility model air compressor cylinder sand core structure, by clamping the first movable block matched with it on the protrusion of the cylindrical core head, And a second movable block is set between the two first movable blocks, so that the first movable block and the second movable block can be easily pulled away from the sand core structure, which is beneficial to the overall molding of the sand core structure and reduces the The number of overall sand cores for air compressor cylinder castings.

Description of drawings

Accompanying drawing 1 is the structural representation of the utility model air compressor cylinder sand core structure;

Accompanying drawing 2 is the dismantling diagram of the sand core structure of air compressor cylinder of the utility model;

Among them, 1. arc-shaped main body; 11. engaging groove; 2. arc-shaped connecting part; 3. cylindrical core head; 31. protrusion; 4. first movable block; 41. groove; 5. second movable block .

Detailed ways

Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in detail:

The air compressor cylinder sand core structure shown in Figure 1 and Figure 2 mainly includes an arc-shaped main body 1, an arc-shaped connecting portion 2, a cylindrical core head 3, a first movable block 4 and a second movable block 5.

Wherein, the upper end of the arc-shaped main body 1 is integrally connected with an arc-shaped connecting portion 2 forming an obtuse angle, and two cylindrical core heads 3 are integrally provided on the arc-shaped connecting portion 2 . These two cylindrical core heads 3 run through and are perpendicular to the arc-shaped connection part 2, and are symmetrical about the symmetry plane of the arc-shaped main body 1, so that a certain angle is formed between the two cylindrical core heads 3, that is, the distance between their one ends is greater than The distance between the other ends; while the one end with the smaller distance between the two cylindrical core heads 3 is integrally provided with a plurality of protrusions 31 . There are also two first movable blocks 4, which are correspondingly clamped on the protrusion 31 and matched with the cylindrical core head 3; the second movable block 5 is clamped between the two first movable blocks 4. Both the first movable block 4 and the second movable block 5 can be pulled away from the protrusion 31 of the cylindrical core head 3, which is conducive to the overall molding of the sand core structure and is conducive to reducing the overall number of sand cores in the air compressor cylinder casting , thereby improving the quality gradually and reducing the cost.

In this embodiment, the protrusion 31 is rotationally symmetrical to the axis of the cylindrical core 3 . The other end (lower end) of the arc-shaped main body 1 is provided with a plurality of engaging grooves 11 . The first movable block 4 is provided with a groove 41 matching with the protrusion 31 for snapping it onto the protrusion 31 .

The above-mentioned embodiments are only to illustrate the technical conception and characteristics of the present utility model, and its purpose is to allow those familiar with this technology to understand the content of the present utility model and implement it accordingly, and cannot limit the protection scope of the present utility model. Equivalent changes or modifications made according to the spirit of the present utility model shall fall within the protection scope of the present utility model.

Claims (4)

1. an air compressor cylinder sand core structure, it comprises curved body (1), be connected and arc connecting portion (2) obtuse-angulate with its shape with described curved body (1) end one, described arc connecting portion (2) is wholely set two symmetrical cylinder core prints (3), described cylinder core print (3) is run through and perpendicular to described arc connecting portion (2), the spacing of two described cylinder core print (3) one end is greater than the spacing of the other end, one end that two described cylinder core print (3) spacing are less has been wholely set multiple projection (31), it is characterized in that: it also comprises and is connected to upper and two the first loose pieces (4) matched with described cylinder core print (3) of described projection (31) and is fastened on the second loose piece (5) between described first loose piece (4) and drawable.

2. air compressor cylinder sand core structure according to claim 1, is characterized in that: described projection (31) is with the axial line phase Rotational Symmetry of described cylinder core print (3).

3. air compressor cylinder sand core structure according to claim 1, is characterized in that: described curved body (1) the other end is provided with multiple slot (11).

4. air compressor cylinder sand core structure according to claim 1, is characterized in that: described first loose piece (4) is provided with the groove (41) matched with described projection (31).