Injection punch of die-casting integrated large casting

Abstract

An injection punch of a die-casting integrated large casting comprises an injection punch body and a connecting seat, the upper end of the injection punch body is connected with the connecting seat, the injection punch body is cylindrical, a first sealing ring is arranged at the upper end of the outer side circumference, a second sealing ring is arranged at the middle end of the injection punch body, and a third sealing ring is arranged at the bottom end of the injection punch body. A plurality of annular inner cavity cooling grooves which are distributed in the radial direction are formed in an inner cavity of the axial end face of the injection punch body, a circular outer side cooling groove is formed in the center of the outer side of the end face, a plurality of annular outer side cooling grooves which are distributed in the radial direction are formed outside the circular outer side cooling groove, and the inner cavity cooling grooves and the outer side cooling grooves are arranged alternately. And the inner cavity cooling groove is arranged between the two outer side cooling grooves. According to the injection punch of the die-casting integrated large casting, the cooling time of molten aluminum can be shortened, the die-casting rhythm is shortened, the production efficiency is improved, and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the field of die-casting machines, in particular to a die-casting injection punch for large integrated castings. Background Art

[0002] In the die-casting machine, the die-shot punch is an important part of the die-shot system. The patent document with patent number 202320498932.8 discloses a die-casting machine die-shot punch. The end wall of the die-shot punch shaft is relatively thick, and the end face and the inner cavity end wall are both smooth planes. This die-shot punch structure is not easy to cool the molten aluminum even with coolant cooling. If the ideal die-casting effect is to be achieved, the cooling time will be extended, resulting in a long die-casting cycle, which does not meet the production requirements of large integrated die-casting parts. If the purpose is to shorten the die-casting cycle, the cooling time will be insufficient, the molten aluminum has not yet cooled, and the molten aluminum has not solidified, which will cause the molten aluminum to splash. At this time, the splashed molten aluminum needs to be shut down and cleaned, which will extend the die-casting cycle, reduce factory production efficiency, and increase production costs. Summary of the invention

[0003] The purpose of the utility model is to provide a die-casting integrated large casting punch to address the corresponding deficiencies of the prior art. The die-casting integrated large casting punch can reduce the cooling time of aluminum liquid, shorten the die-casting cycle, improve production efficiency, and reduce production costs.

[0004] The purpose of the utility model is achieved by adopting the following scheme: a die-casting integrated large casting die-casting punch, comprising a die-casting punch body and a connecting seat, the upper end of the die-casting punch body is connected to the connecting seat, the die-casting punch body is cylindrical, the upper end of the outer circumference is provided with a first sealing ring, the middle end is provided with a second sealing ring, and the bottom end is provided with a third sealing ring, the axial end face inner cavity of the die-casting punch body is provided with a plurality of radially arranged annular inner cavity cooling grooves, a circular outer cooling groove is provided at the center of the outer side of the end face, and a plurality of radially arranged annular outer cooling grooves are provided outside the circular outer cooling groove, the inner cavity grooves and the outer cooling grooves are arranged alternately, and the inner cavity cooling groove is provided between the two outer cooling grooves.

[0005] The outer side of the axial end surface of the injection punch body is an inwardly concave end surface.

[0006] The cross-sectional shapes of the inner cavity cooling groove and the outer cooling groove are both trapezoidal.

[0007] The injection punch body is connected to the connecting seat by bolts.

[0008] The first sealing ring and the third sealing ring are made of H13 hot working die steel, and the second sealing ring is made of brass.

[0009] The injection punch body is made of H13 hot working die steel.

[0010] The advantages of the utility model are: 1. Radially arranged grooves are added inside and outside the end face of the die-casting punch, and these grooves can increase the heat exchange area of ​​the end face of the die-casting punch, accelerate the cooling of the aluminum liquid, reduce the splash of aluminum liquid, reduce the downtime for inspection, shorten the die-casting cycle, improve the die-casting production efficiency, and reduce the production cost.

[0011] 2. Improvements are made on the basis of the existing press-shot punch, which will not increase the cost of the press-shot punch and at the same time improve the cooling capacity of the press-shot punch. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model;

[0013] Figure 2 It is a cross-sectional view of the utility model;

[0014] Figure 3 It is the left view of the utility model;

[0015] Figure 4 It is the right view of the utility model. DETAILED DESCRIPTION

[0016] like Figures 1 to 4 As shown, a die-casting integrated large casting injection punch includes an injection punch body 4 and a connecting seat 5. The upper end of the injection punch body 4 is connected to the connecting seat 5, and the injection punch body 4 and the connecting seat 5 are connected by bolts. The injection punch body 4 is cylindrical, and a first sealing ring 6 is provided at the upper end of the outer circumference, a second sealing ring 7 is provided at the middle end, and a third sealing ring 1 is provided at the bottom end. The first sealing ring 6 and the third sealing ring 1 are made of H13 hot working die steel, and the second sealing ring 7 is made of brass. The injection punch body 4 is made of H13 hot working die steel. The inner cavity of the axial end face of the injection punch body 4 is provided with a plurality of radially arranged annular inner cavity cooling grooves 3, a circular outer cooling groove 2 is provided at the center of the outer side of the end face, and a plurality of radially arranged annular outer cooling grooves 2 are provided outside the circular outer cooling groove 2, the inner cavity cooling grooves 3 and the outer cooling grooves 2 are arranged alternately, the inner cavity cooling grooves 3 are provided between the two outer cooling grooves 2, and the inner cavity cooling grooves 3 and the outer cooling grooves 2 are both used to enhance the cooling effect of the aluminum liquid. The cross-sectional shapes of the inner cavity cooling grooves 3 and the outer cooling grooves 2 are both trapezoidal, and the trapezoidal grooves can increase the heat exchange area of ​​the end face of the injection punch body 4. The outer side of the axial end face of the injection punch body 4 is an inwardly concave end face.

[0017] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modification made to the present invention by those skilled in the art without departing from the spirit of the present invention shall fall within the protection scope of the present invention.

Claims

1. A die-casting punch for a large integrated casting, comprising a die-casting punch body (4) and a connecting seat (5), wherein the upper end of the die-casting punch body (4) is connected to the connecting seat (5), the die-casting punch body (4) is cylindrical, a first sealing ring (6) is arranged at the upper end of the outer circumference, a second sealing ring (7) is arranged at the middle end, and a third sealing ring (1) is arranged at the bottom end, characterized in that: The inner cavity of the axial end face of the injection punch body (4) is provided with a plurality of radially arranged annular inner cavity cooling grooves (3), a circular outer cooling groove (2) is provided at the center of the outer side of the end face, and a plurality of radially arranged annular outer cooling grooves (2) are provided outside the circular outer cooling groove (2), the inner cavity cooling grooves (3) and the outer cooling grooves (2) are arranged alternately, and the inner cavity cooling groove (3) is provided between the two outer cooling grooves (2).

2. The injection punch for die-casting integrated large casting according to claim 1, characterized in that: The outer side of the axial end surface of the injection punch body (4) is an inwardly concave end surface.

3. The injection punch for die-casting integrated large casting according to claim 1, characterized in that: The cross-sectional shapes of the inner cavity cooling groove (3) and the outer cavity cooling groove (2) are both trapezoidal.

4. The injection punch for die-casting integrated large casting according to claim 1, characterized in that: The injection punch body (4) and the connecting seat (5) are connected via bolts.

5. The injection punch for the die-casting integrated large casting according to claim 1, characterized in that: The first sealing ring (6) and the third sealing ring (1) are made of H13 hot working die steel, and the second sealing ring (7) is made of brass.

6. The injection punch for the die-casting integrated large casting according to claim 1, characterized in that: The injection punch body (4) is made of H13 hot working die steel.

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