Die for die casting pump body

Abstract

The utility model provides a kind of pump body die casting, belong to die casting mould technical field, including fixed module, movable module, first feed inlet, second feed inlet and third feed inlet, the fixed module top four corners are equipped with downward recess, the movable module corresponding position is equipped with upward bulge to with the fixed module clamping, the gate is set in the movable module upper surface recess, the first feed inlet, the second feed inlet and the third feed inlet are located in the gate close to movable module center direction end, the first feed inlet, the second feed inlet and the third feed inlet bottom surface are inclined upward along close to movable module center direction.The utility model can adjust the flow velocity and impact direction of die casting liquid, protect the inner wall of mould, improve mould life, with good practicality and economy.

Description

Technical Field

[0001] This utility model belongs to the field of die casting mold technology, specifically a pump body die casting mold. Background Technology

[0002] With the development of the casting industry, higher requirements are being placed on the quality of blanks. Excellent mold process design is the main guarantee for a high yield of die-cast blanks. The contact surfaces of the fixed and moving modules of the existing pump body die-casting mold adopt a large flat surface design and lack the design of a process platform at the edge of the die-cast blank. The non-rounded corner connection between the inlet and the side causes the impact force of the die-casting liquid to directly contact the mold wall without being eliminated. At the same time, the inlet is directly opposite the structure used to form the pump body sealing groove, causing a small stream of die-casting liquid to overflow and directly hit this part during the filling process. Since there cannot be any through protrusions or depressions in the pump body sealing groove, it is not possible to repair the mold by making inserts. Other routine mold repair solutions, such as welding and reprocessing, cannot be implemented here because the sealing groove structure is special. The mold body at the protrusions and narrow gaps is very small. Welding will inevitably result in slag porosity and air holes, making it impossible to ensure internal density. Therefore, it is impossible to repair the mold, resulting in the mold being scrapped entirely due to early erosion of this part. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a pump body die-casting mold that avoids erosion of the pump body sealing groove module, which is caused by the erosion of the existing mold pump body sealing groove module.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0005] A pump body die-casting mold includes a fixed module, a moving module, a first inlet, a second inlet, and a third inlet. The fixed module has downward recesses at its four top corners, and the moving module has upward protrusions at corresponding positions to engage with the fixed module. The gating system is disposed in the recesses on the upper surface of the moving module. The first inlet, the second inlet, and the third inlet are located at the ends of the gating system near the center of the moving module. The bottom surfaces of the first inlet, the second inlet, and the third inlet are inclined upwards along the direction near the center of the moving module.

[0006] Furthermore, a pump body sealing groove sub-module is provided in the recess on the upper surface of the fixed module, and the positioning platform protrusion is arranged circumferentially along the outer side of the recess on the upper surface of the fixed module.

[0007] Furthermore, the upper surface of the moving module is provided with a positioning platform recess corresponding to the protrusion of the positioning platform.

[0008] Furthermore, the first and second feed inlets are respectively connected to the rounded corners at the ends of the gating system.

[0009] Furthermore, the height of the first feed inlet, the second feed inlet, and the third feed inlet is all 3mm.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0011] 1) The downward recesses at the four corners of the fixed module and the upward protrusions at the corresponding positions of the moving module are designed to engage with each other, simplifying the difficulty of mold installation and alignment. The positioning platform protrusion on the fixed module and the recess on the upper surface of the moving module correspond to the process platform for die casting to form the edge of the product blank, which facilitates subsequent processing and positioning.

[0012] 2) The bottom surfaces of the first, second, and third feed inlets are inclined upwards along the direction close to the center of the moving module, so that the die-casting liquid will not directly contact the edge of the pump body sealing groove sub-module after flowing out of the feed inlet, causing erosion of the sub-module;

[0013] 3) The first and second inlet outlets are connected with rounded corners to prevent small streams of sprue from overflowing and directly impacting the mold sealing groove.

[0014] 4) It greatly extends the service life of the mold and has good economic efficiency and practicality. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a fixed module in the prior art;

[0016] Figure 2 This is a schematic diagram of the structure of a moving module in the prior art;

[0017] Figure 3 This is a schematic diagram of the feed inlet at position A of the moving module in the prior art;

[0018] Figure 4 This is a schematic diagram of the structure of the fixed module of this utility model;

[0019] Figure 5 This is a schematic diagram of the structure of the moving module of this utility model;

[0020] Figure 6 This is a schematic diagram of the feed inlet at position B of the moving module of this utility model.

[0021] Among them, 1-fixed module, 2-pump body sealing groove sub-module, 3-positioning platform protrusion, 4-moving module, 5-first feed inlet, 6-second feed inlet, 7-third feed inlet, 8-positioning platform recess, 9-sprue. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] In the description of this utility model, it should be noted that the terms "upper," "lower," "horizontal," "top," "side," "far," "near," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In this utility model, it should be noted that, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral part; it can refer to a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0025] Example

[0026] See Figure 4-6The die casting system includes a fixed module 1, a pump body sealing groove sub-module 2, a moving module 4, a first inlet 5, a second inlet 6, and a third inlet 7. The fixed module 1 has downward-facing recesses at its four top corners, and the moving module 4 has upward-facing protrusions at corresponding positions to engage with the fixed module 1. The gating system 9 is located within the recesses on the upper surface of the moving module 4. The first inlet 5, the second inlet 6, and the third inlet 7 are located at the ends of the gating system 9 near the center of the moving module 4. The bottom surfaces of the first inlet 5, the second inlet 6, and the third inlet 7 slope upwards near the center of the moving module 4. The die casting liquid used in this embodiment is molten aluminum. The use of molten aluminum as the die casting liquid type is only for illustrating the technical solution and not for limitation. The gating system 9 is the passageway for molten aluminum to enter the internal cavity of the mold from the outside through the three inlets. By changing the outlet height of the three inlets, the outlet avoids directly facing the pump body sealing groove sub-module 2, eliminating the direct impact of the molten aluminum. The moving module 4 is provided with a first inlet 5 and a second inlet 6 connected to the rounded corners of the end of the sprue 9. The mold adopts a three-sprue 9 design, with rounded corners added to two of the sprues 9 to prevent the small sprue 9 from overflowing independently into the direct-flow pump body sealing groove sub-module 2.

[0027] The fixed module 1 has a pump body sealing groove sub-module 2 recessed in its upper surface, and the positioning platform protrusion 3 is arranged circumferentially along the outer side of the recessed upper surface of the fixed module 1. The moving module 4 has a positioning platform recess 8 corresponding to the positioning platform protrusion 3 on its upper surface. The positioning platform protrusion 3 and the positioning platform recess 8 do not contact each other, and the central space is connected to the rest of the mold space to provide a positioning platform for die casting of die casting blanks.

[0028] The first feed port 5, the second feed port 6 and the third feed port 7 are all 3mm high. This ensures that the die-casting temperature meets the requirements when the molten aluminum enters the mold, while preventing the molten aluminum from flowing too much and impacting the inner wall of the mold.

[0029] During the die casting of the pump body, molten aluminum flows through three gating channels 9 from the first inlet 5, the second inlet 6, and the third inlet 7 into the internal cavity of the mold. Utilizing the viscosity of molten aluminum, rounded corners of a certain size are designed on the sidewalls of the first inlet 5 and the second inlet 6 to prevent small streams of molten aluminum from overflowing directly into the pump body sealing groove module 2, thus eliminating the impact on the pump body sealing groove module 2. Simultaneously, by raising the bottom height of the inlet outlet, the molten aluminum entering the internal cavity of the mold from the three inlets avoids directly impacting the pump body sealing groove module 2. After traveling a relatively long filling distance and experiencing a significant temperature drop, the molten aluminum begins to contact the pump body sealing groove module 2. At this point, the filling kinetic energy and temperature of the molten aluminum have significantly decreased, insufficient to further corrode the pump body sealing groove module 2. Furthermore, the inclined design of the inlet outlets also slows down the speed at which the molten aluminum enters the internal cavity of the mold, thereby reducing the impact on the mold. After improvements, the service life of the pump body die casting mold has been greatly extended. Originally, it was scrapped after 7,000 mold cycles due to severe erosion of the pump body sealing groove module 2. Now, it is used for 35,000 mold cycles before slight erosion begins to appear in the internal cavity of the mold. It can continue to be used for 80,000 mold cycles before reaching the scrapping requirement.

[0030] Finally, it should be noted that the above embodiments are merely preferred embodiments of this utility model, and are only used to illustrate the technical solution of this utility model and not to limit it. Any modifications, improvements, or other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be included within the protection scope of this utility model.

Claims

1. A pump body die-casting mold, characterized in that: It includes a fixed module (1), a moving module (4), a first feed port (5), a second feed port (6), a third feed port (7), and a gating system (9). The fixed module (1) has four downward recesses at its top corners, and the moving module (4) has upward protrusions at corresponding positions to engage with the fixed module (1). The gating system (9) is located in the recesses on the upper surface of the moving module (4). The first feed port (5), the second feed port (6), and the third feed port (7) are located at the end of the gating system (9) near the center of the moving module (4). The bottom surfaces of the first feed port (5), the second feed port (6), and the third feed port (7) are inclined upward along the direction near the center of the moving module (4).

2. The pump body die-casting mold as described in claim 1, characterized in that: The fixed module (1) has a pump body sealing groove sub-module (2) in the recessed area on the upper surface, and the positioning platform protrusion (3) is arranged circumferentially along the outer side of the recessed area on the upper surface of the fixed module (1).

3. The pump body die-casting mold as described in claim 2, characterized in that: The upper surface of the moving module (4) is provided with a positioning platform recess (8) corresponding to the positioning platform protrusion (3).

4. The pump body die-casting mold as described in claim 1, characterized in that: The first feed port (5) and the second feed port (6) are respectively connected to the rounded corners at the end of the gating channel (9).

5. The pump body die-casting mold as described in claim 1, characterized in that: The height of the first feed inlet (5), the second feed inlet (6) and the third feed inlet (7) is 3mm.

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