Die-casting die for oil delivery pump cover

Abstract

The utility model provides an oil delivery pump cover die-casting die which is used for die-casting manufacturing of oil delivery pump covers and comprises a movable die and a fixed die, the movable die and the fixed die are closed to form a die cavity and a material channel, the outer end of the material channel is connected with a pressure chamber, and the inner end of the material channel is communicated with the die cavity. A sinking material channel is arranged at the connecting position of the material channel and the die cavity, when the movable die and the fixed die are closed, in the height direction, the highest point of the sinking material channel is the connecting position of the die cavity, and material liquid overflows upwards into the die cavity to be formed after being guided by the sinking material channel. According to the utility model, the structures of the inner material channel and the material inlet of the die cavity are optimized, and the material liquid entering the die cavity overflows from bottom to top instead of transverse impact through the sinking material channel, so that on one hand, the offset of the kinetic energy of the material liquid by the side wall of the die cavity is reduced, and the flow speed of the material liquid is ensured; the liquid level of feed liquid can be more stable, waves are reduced, and the forming quality of the oil delivery pump cover is further improved.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, particularly die-casting mold technology, and more particularly to a die-casting mold for an oil pump cover. Background Technology

[0002] In the production of oil pump covers, die casting is typically used. Liquid or semi-liquid metal is filled into the die casting mold cavity at high speed under high pressure and then rapidly solidified under pressure to obtain the oil pump cover casting.

[0003] Existing die-casting molds for producing oil pump covers typically include a moving mold and a fixed mold. These molds close during casting to form a mold cavity and a material channel. The material channel is used to inject pressurized molten material into the mold cavity. In existing die-casting molds for oil pump covers, the material channel usually includes an external channel and an internal channel. The external channel connects to the pressure vessel and introduces molten material from the outside, while the internal channel connects the mold cavity and the external channel, guiding the molten material into the mold cavity. Existing internal channels are typically designed as follows... Figure 1 As shown, when the moving mold and the fixed mold are closed, the molten material is directly fed into the mold cavity from the lateral and horizontal directions. The inlet of the mold cavity and the outlet of the inner material channel are parallel in the horizontal direction, and the molten material enters from the side horizontally. With this feeding route design, part of the pressurized molten material directly impacts the side wall of the mold cavity from the lateral direction, while part follows the shape of the mold cavity upwards, downwards, or inwards to fill the mold cavity and form the oil pump cover.

[0004] With this design of the feed channel and inlet, kinetic energy is lost when the molten material enters the mold cavity. When the pressurized molten material impacts the mold cavity laterally, some of its kinetic energy is offset or absorbed by the side walls of the mold cavity, resulting in energy reduction and a decreased flow rate as the molten material subsequently fills the mold cavity. This energy reduction and decreased flow rate affect the formation of the oil pump cover during molten material filling the mold cavity.

[0005] At the same time, the impact process will cause the liquid material at the inlet to surge, and the undulation of the liquid material surface will cause waves, that is, the surface stability of the liquid material is poor, which will affect the molding quality of the oil pump cover. Utility Model Content

[0006] The technical problem to be solved by this utility model is: in order to overcome the shortcomings of the prior art, this utility model provides a die-casting mold for oil pump cover, which can effectively improve the direction of the liquid entering the mold cavity, reduce the impact on the side wall of the mold cavity, effectively reduce the energy loss during liquid filling, and effectively stabilize the surface of the liquid, thereby improving the molding quality of the oil pump cover.

[0007] The technical solution adopted by this utility model to solve its technical problem is: a die-casting mold for oil pump cover, used for die-casting to manufacture oil pump cover, including a moving mold and a fixed mold, wherein the moving mold and the fixed mold are closed to form a mold cavity and a material channel, wherein the outer end of the material channel is connected to a pressure chamber and the inner end is connected to the mold cavity; the connection position between the material channel and the mold cavity has a sinking material channel, wherein when the moving mold and the fixed mold are closed, the highest point of the sinking material channel is at the mold cavity connection position in the height direction, and the liquid material is guided upward by the sinking material channel and overflows into the mold cavity to form the cover.

[0008] In the above scheme, the sinking channel design ensures that the molten material enters the mold cavity from bottom to top, avoiding energy loss caused by direct impact of the molten material on the mold cavity sidewalls and guaranteeing the flow rate of the molten material. Simultaneously, the bottom-up filling of the mold cavity, compared to the traditional feeding method that directly impacts the mold cavity sidewalls laterally, results in a more stable liquid surface, reduces waves, and further improves the molding quality of the oil pump cover.

[0009] Furthermore, the material channel includes an outer material channel and an inner material channel; the outer end of the outer material channel is connected to the storage chamber and the pressure mechanism, and the inner end is connected to the inner material channel through the material channel; the inner end of the inner material channel is connected to the mold cavity; the sinking material channel is the section where the inner material channel connects to the mold cavity.

[0010] Furthermore, the lowering channel has an L-shaped cross-section, wherein the upper end of the vertical part of the L-shaped structure is connected to the mold cavity, and the horizontal part of the L-shaped structure is connected to the outer channel through the channel.

[0011] Furthermore, the vertical and horizontal sections of the L-shaped structure of the sinking channel are connected by an arc-shaped curve. This smooth transition design of the arc-shaped curve effectively guides the liquid material to overflow along the curve, reducing energy loss during the overflow process due to the liquid interacting with the sidewalls of the vertical section of the L-shaped structure.

[0012] Furthermore, the inlet connecting the mold cavity and the sinking channel is located on the lower outer side of the mold cavity, and the liquid overflows obliquely inward and upward along the top of the vertical part of the sinking channel into the mold cavity. Through the planning and design of the inlet direction, the liquid can also effectively achieve stable floating of the liquid surface when entering the mold cavity, thereby improving the molding quality of the oil pump cover.

[0013] The beneficial effects of this utility model are that the oil pump cover die-casting mold provided by this utility model has a reasonable structural design and optimizes the structure of the inner material channel and the mold cavity inlet. By designing a lower sinking material channel in the height direction, the direction of the liquid entering the mold cavity changes from lateral impact to overflow from bottom to top. On the one hand, it can reduce the offset of the kinetic energy of the liquid by the side wall of the mold cavity and ensure the flow rate of the liquid. On the other hand, the bottom-up filling method of the mold cavity can make the liquid surface more stable, reduce waves, and further improve the molding quality of the oil pump cover. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0015] Figure 1 This is a schematic diagram of the material inlet in an existing die-casting mold cavity (the arrows indicate the direction of material flow).

[0016] Figure 2 This is the front view of the preferred embodiment of this utility model.

[0017] Figure 3 yes Figure 2 Sectional view of AA.

[0018] Figure 4 yes Figure 3 Enlarged schematic diagram at point B (arrow direction indicates liquid flow direction).

[0019] In the diagram: 1. Mold cavity; 2. Moving mold; 3. Inner runner; 4. Fixed mold; 5. Sinking runner; 5-1. Vertical section; 5-2. Arc curve; 5-3. Horizontal section. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention. Therefore, they only show the components relevant to the present invention. Orientations and references (e.g., up, down, left, right, etc.) are only used to aid in the description of the features in the drawings. Therefore, the following specific embodiments are not intended to be restrictive, and the scope of the claimed subject matter is defined solely by the appended claims and their equivalents.

[0021] like Figures 2 to 4 The oil pump cover die-casting mold shown is the preferred embodiment of this utility model. This oil pump cover is used for die-casting to manufacture oil pump covers.

[0022] Specifically, the die-casting mold for the oil pump cover includes a moving mold 2 and a fixed mold 4. The moving mold 2 and the fixed mold 4 close to form a mold cavity 1 and a material channel. The material channel includes an outer material channel and an inner material channel 3. The outer end of the outer material channel is connected to the storage chamber and the pressure mechanism, while the inner end is connected to the inner material channel 3 through the material channel. The inner end of the inner material channel 3 is connected to the mold cavity 1. The sinking material channel 5 is the section where the inner material channel 3 connects to the mold cavity 1. The position where the mold cavity 1 connects to the sinking material channel 5 is the inlet. When the moving mold 2 and the fixed mold 4 are closed, in the height direction, the highest point of the sinking material channel 5 is the connection position of the mold cavity 1. The liquid material is guided upward by the sinking material channel 5 and overflows into the mold cavity 1 to form the mold.

[0023] like Figure 4As shown, in this embodiment, the sinking channel 5 has an L-shaped cross-section. The vertical part 5-1 and the horizontal part 5-3 of the L-shaped structure are connected by an arc-shaped curve 5-2. The upper end of the vertical part 5-1 of the L-shaped structure is connected to the inlet of the mold cavity 1, and the horizontal part 5-3 of the L-shaped structure is connected to the outer channel through the channel. Through the smooth transition design of the arc-shaped curve 5-2, the liquid material can be effectively guided to overflow along the arc-shaped curve 5-2, reducing the energy loss of the liquid material against the side wall of the vertical part 5-1 of the L-shaped structure during the overflow process.

[0024] During the feeding process of the oil pump cover die-casting mold, the sinking channel 5 is designed so that the liquid material flows from the channel into the mold cavity 1 from bottom to top, avoiding energy loss caused by the liquid material directly impacting the side wall of the mold cavity 1 and ensuring the flow rate of the liquid material. At the same time, in the shape design of the sinking channel 5, the pressurized liquid material flowing in from the side can move vertically upward along the smooth arc curve 5-2 and overflow from bottom to top to fill the mold cavity 1. Although there may be some energy loss in this process, it is much less than the direct impact on the side wall in traditional die-casting molds. Therefore, the L-shaped structure with the arc curve 5-2 transition provided in this embodiment can achieve the effect of reducing the energy loss of the liquid material.

[0025] Meanwhile, in the actual design, the inlet connecting the mold cavity 1 and the sinking channel 5 is located on the lower outer side of the mold cavity 1. The liquid overflows obliquely inward and upward from the top of the vertical part 5-1 of the sinking channel 5 into the mold cavity 1. Through the planning and design of the inlet direction, the liquid enters the mold cavity 1 obliquely inward and upward. This liquid inflow method can effectively achieve stable floating of the liquid surface, and while avoiding impact on the side wall of the mold cavity 1 that would cause the liquid surface to float, it further stabilizes the liquid surface, thereby making the oil pump cover manufactured using the oil pump cover die-casting mold provided in this embodiment have a more stable and reliable molding quality.

[0026] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A die-casting mold for an oil pump cover, used for die-casting the manufacture of an oil pump cover, characterized in that: It includes a moving mold (2) and a fixed mold (4). The moving mold (2) and the fixed mold (4) are closed to form a mold cavity (1) and a material channel. The outer end of the material channel is connected to the pressure chamber, and the inner end is connected to the mold cavity (1). The connection position between the material channel and the mold cavity (1) has a sunken material channel (5). When the moving mold (2) and the fixed mold (4) are closed, the highest point of the sunken material channel (5) is the connection position of the mold cavity (1) in the height direction. The liquid material is guided upward by the sunken material channel (5) and overflows into the mold cavity (1) to form the mold.

2. The oil pump cover die-casting mold as described in claim 1, characterized in that: The material channel includes an outer material channel and an inner material channel (3); the outer end of the outer material channel is connected to the storage chamber and the pressure mechanism, and the inner end is connected to the inner material channel (3) through the material channel; the inner end of the inner material channel (3) is connected to the mold cavity (1); the sinking material channel (5) is the section where the inner material channel (3) and the mold cavity (1) are connected.

3. The oil pump cover die-casting mold as described in claim 2, characterized in that: The sinking channel (5) has an L-shaped cross-section, wherein the upper end of the vertical part (5-1) of the L-shaped structure is connected to the mold cavity (1), and the horizontal part (5-3) of the L-shaped structure is connected to the outer channel through the channel.

4. The oil pump cover die-casting mold as described in claim 3, characterized in that: The vertical part (5-1) and the horizontal part (5-3) of the L-shaped structure of the sinking channel (5) are connected by an arc curve (5-2).

5. The oil pump cover die-casting mold as described in claim 4, characterized in that: The feed inlet connecting the mold cavity (1) and the sinking channel (5) is located on the outer side of the lower end of the mold cavity (1). The liquid overflows into the mold cavity (1) obliquely inward and upward along the top of the vertical part (5-1) of the sinking channel (5).

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