CN221639487U - Oil pump body die casting die - Google Patents

Abstract

The utility model relates to a die casting die for a pump body of an oil pump, which comprises: a cavity arranged between the upper die core and the lower die core; the glue inlet is communicated with the cavity through the first runner and the second runner; the first glue overflow groove is communicated with the cavity through a third flow passage; the third flow passage is positioned between the first flow passage and the second flow passage; the second runner is added on the basis of the first runner, so that the aluminum liquid enters the cavity from the glue inlet through the first runner and the second runner, the flow entering the cavity can be increased, the filling speed of the cavity is increased, and the front-back cooling of the product in the cavity is avoided.

Description

A die-casting mold for an oil pump body

Technical Field

The utility model relates to a die-casting die, in particular to a die-casting die for an oil pump body.

Background Art

In the process of die-casting the oil pump body, it is necessary to pour aluminum liquid into the die-casting mold, fill the cavity with the flow of aluminum liquid, cool the aluminum liquid in the cavity, and polish it to obtain the pump body;

In the die-casting process, the existing solution has only one flow channel connecting the glue inlet and the cavity. As a result, the aluminum liquid enters the cavity through this flow channel. The flow rate of the aluminum liquid entering the cavity is small, resulting in part of the aluminum liquid being formed in the cavity before the filling is completed, resulting in defective workpieces after molding.

In summary, how to increase the flow rate of molten aluminum entering the mold cavity has become an urgent problem that researchers in this field need to solve.

Utility Model Content

The technical problem to be solved by the utility model is: how to increase the flow rate of aluminum liquid entering the mold cavity;

In order to solve the above technical problems, the technical solution adopted by the utility model is:

The utility model is a die-casting mold for an oil pump body, comprising: a mold cavity arranged between an upper mold core and a lower mold core; a glue inlet, which is connected to the mold cavity through a first flow channel and a second flow channel; a first glue overflow groove, which is connected to the mold cavity through a third flow channel; the third flow channel is located between the first flow channel and the second flow channel;

In this solution, a second flow channel is added on the basis of the first flow channel, so that the aluminum liquid enters the cavity from the glue inlet through the first flow channel and the second flow channel, which can increase the flow rate entering the cavity and increase the filling speed of the cavity.

If two runners are used to connect the mold cavity and the glue inlet, the lengths of the two runners are inconsistent due to avoiding the first overflow groove, and the first runner is relatively short, resulting in the aluminum liquid entering the mold cavity in sequence, that is, the aluminum liquid in the first runner enters the mold cavity first, and the aluminum liquid in the second runner enters the mold cavity later. In this way, the cooling time of the aluminum liquid in the mold cavity is inconsistent, which also causes the defective workpiece after molding. In order to solve the above problem, the utility model adopts a flaring structure at the end of the first runner to communicate with the mold cavity;

By setting the expansion structure, the speed of the molten aluminum is slowed down when it flows through here, and the speed of the molten aluminum in the second flow channel remains unchanged. In this way, the molten aluminum can reach the cavity synchronously, and the two paths of molten aluminum in the cavity can be cooled synchronously, reducing defects after product molding.

In order to further reduce the speed of the aluminum liquid in the first flow channel, the utility model adopts that the depth of the first flow channel is greater than the depth of the second flow channel;

In this way, when the aluminum liquid enters the deeper first flow channel, its flow speed is slower, which further enables the two paths of aluminum liquid to enter the mold cavity synchronously.

A plurality of fourth flow channels are provided at the cavity of the first flow channel and the second flow channel; a plurality of fourth flow channels are provided at the cavity away from the first flow channel and the second flow channel; the plurality of fourth flow channels are correspondingly connected to the second overflow groove provided at the lower mold core;

In this way, the excess aluminum liquid will enter the second overflow glue groove through the fourth flow channel, and enter the first overflow glue groove through the third flow channel, so that the excess aluminum liquid can be collected.

In order to realize the demoulding of the molded product, the utility model adopts that each of the second overflow glue groove and the first overflow glue groove is provided with an ejector pin hole;

The ejector pin passes through the ejector pin hole and abuts against the forming blocks in the first overflow glue groove and the second overflow glue groove, thereby realizing the ejection of the forming blocks and the product.

The beneficial effects of the utility model: the utility model is a die-casting mold for an oil pump body, in which a second flow channel is added on the basis of the first flow channel, so that the aluminum liquid enters the cavity from the glue inlet through the first flow channel and the second flow channel, which can increase the flow rate entering the cavity, increase the filling speed of the cavity, and avoid front and rear cooling of the product in the cavity.

BRIEF DESCRIPTION OF THE DRAWINGS

The utility model is further described below in conjunction with the accompanying drawings and embodiments.

Fig. 1 is a schematic diagram of the structure of the utility model;

Figure 2 is a schematic diagram of the structure of the upper mold core and the lower mold core;

FIG3 is a schematic structural diagram of the lower mold core;

FIG4 is a schematic structural diagram of the lower mold core from another perspective;

In the figure: 1-upper mold core, 2-lower mold core, 3-glue inlet, 4-first flow channel, 5-second flow channel, 6-first glue overflow groove, 7-third flow channel, 8-expansion structure, 9-fourth flow channel, 10-second glue overflow groove, 11-upper mold base, 12-ejector pin hole, 22-lower mold base.

DETAILED DESCRIPTION

Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

As shown in Fig. 1-4, the utility model is a die-casting mold for an oil pump body, comprising: a cavity arranged between an upper die core 1 and a lower die core 2; the upper die core 1 is installed in an upper die seat 11, and the lower die core 2 is installed in a lower die seat 22; a glue inlet 3, which is connected to the cavity through a first flow channel 4 and a second flow channel 5; a first glue overflow groove 6, which is connected to the cavity through a third flow channel 7; the third flow channel 7 is located between the first flow channel 4 and the second flow channel 5;

In this solution, a second flow channel is added on the basis of the first flow channel, so that the aluminum liquid enters the cavity from the glue inlet through the first flow channel and the second flow channel, which can increase the flow rate entering the cavity and increase the filling speed of the cavity.

As shown in Fig. 3-4, if two runners are used to connect the mold cavity and the glue inlet, the lengths of the two runners are inconsistent due to avoiding the first overflow groove, and the first runner is relatively short, resulting in the aluminum liquid entering the mold cavity in sequence, that is, the aluminum liquid in the first runner enters the mold cavity first, and the aluminum liquid in the second runner enters the mold cavity later. In this way, the cooling time of the aluminum liquid in the mold cavity is inconsistent, which also causes the defective workpiece after molding. In order to solve the above problems, the utility model adopts a flaring structure 8 provided at the end of the first runner 4 to communicate with the mold cavity;

By setting the expansion structure, the speed of the molten aluminum is slowed down when it flows through here, and the speed of the molten aluminum in the second flow channel remains unchanged. In this way, the molten aluminum can reach the cavity synchronously, and the two paths of molten aluminum in the cavity can be cooled synchronously, reducing defects after product molding.

As shown in FIG3-4 , in order to further reduce the speed of the aluminum liquid in the first flow channel, the utility model adopts that the depth of the first flow channel 4 is greater than the depth of the second flow channel 5;

In this way, when the aluminum liquid enters the deeper first flow channel, its flow speed is slower, which further enables the two paths of aluminum liquid to enter the mold cavity synchronously.

As shown in Fig. 3-4, a plurality of fourth flow channels are provided at the cavity of the first flow channel and the second flow channel; a plurality of fourth flow channels 9 are provided at the cavity away from the first flow channel 4 and the second flow channel 5; the plurality of fourth flow channels 9 are correspondingly connected to the second overflow groove 10 provided at the lower mold core 2;

In this way, the excess aluminum liquid will enter the second overflow glue groove through the fourth flow channel, and enter the first overflow glue groove through the third flow channel, so that the excess aluminum liquid can be collected.

As shown in FIG. 3-4 , in order to realize the ejection of the molded product, the utility model adopts that each of the second overflow glue groove 10 and the first overflow glue groove 6 is provided with an ejector pin hole 12;

The ejector pin passes through the ejector pin hole and abuts against the forming blocks in the first overflow glue groove and the second overflow glue groove, thereby realizing the ejection of the forming blocks and the product.

Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims (5)

1. The utility model provides an oil pump body die casting die which characterized in that includes:

A cavity arranged between the upper die core and the lower die core;

the glue inlet is communicated with the cavity through the first runner and the second runner;

The first glue overflow groove is communicated with the cavity through a third flow passage;

The third flow passage is positioned between the first flow passage and the second flow passage.

2. The die casting die for the pump body of the oil pump according to claim 1, wherein the end part of the first flow passage is provided with a flaring structure communicated with the cavity.

3. The die casting die for the pump body of the oil pump according to claim 1, wherein the depth of the first runner is greater than the depth of the second runner.

4. The die casting die for the pump body of the oil pump according to claim 1, wherein a plurality of fourth runners are arranged at the positions, far away from the first runner and the second runner, of the die cavities;

and the fourth runners are correspondingly connected with a second glue overflow groove formed at the lower die core.

5. The die casting die for the pump body of the oil pump of claim 4, wherein a top pinhole is arranged at each of the second glue overflow groove and the first glue overflow groove.