Die-casting die for flange parts

Abstract

The utility model provides a die-casting die for flange parts, which comprises a fixed die, a movable die, a fixed die cavity arranged on the fixed die and a movable die cavity arranged on the movable die, and is characterized in that a cross gate communicated with the movable die cavity and a plurality of slag storage grooves are arranged on the movable die, the cross gate is tangentially communicated with the movable die cavity, and the slag storage grooves are communicated with the movable die cavity. The slag storage groove is communicated with the movable mold cavity through the slag discharge groove, and the movable mold is further provided with an exhaust groove communicated with the slag storage groove. Redundant molten metal is discharged into the slag storage groove through the slag discharge groove, and the exhaust groove can ensure that gas generated during casting can be discharged from a part, so that the problems of loose structure and deformation of a casting caused by too many air holes are avoided, and through a tangential communication mode, the molten metal can firstly flow to the part far away from a pouring gate when entering a mold cavity through a transverse pouring gate, and then flows to the part far away from the pouring gate; smooth exhausting and deslagging can be guaranteed.

Description

Technical Field

[0001] This utility model relates to a die-casting mold, particularly a die-casting mold for flange parts, and belongs to the field of mold design and manufacturing technology. Background Technology

[0002] Die casting mold forming is an important process step to ensure that die-cast parts meet the requirements. Commonly used flange parts have the following characteristics: (1) The shape is a regular cylinder with three through holes evenly distributed at the maximum outer contour; (2) Both ends of the inner side are countersunk, and square and round bosses are evenly distributed at the bottom of the countersunk. The bosses are provided with connecting screw holes, and the center is a through hole, etc. Part characteristics and production process requirements: (1) The inner surface of one end of the inner countersunk and the outer surface of the three bosses must be accurately positioned with the relevant connecting parts; (2) The screw holes at the bottom of the inner countersunk are firmly and reliably connected with the relevant connecting parts at the other end; (3) The internal structure of the die-cast parts is dense and compact, with few and small pores and shrinkage cavities, few slag inclusions, and no looseness; (4) It is necessary to ensure safe, reliable, continuous batch and efficient production. Existing die-casting technology uses a casting feeding structure where molten metal directly impacts the sidewall of the mold core I. Parts produced in batches using this structure often exhibit problems such as loose internal structure, large and numerous pores, and significant deformation, making it difficult to achieve the required firm, reliable, and precise positioning with related connecting parts. Therefore, it is necessary to improve the existing technology. Summary of the Invention

[0003] To address the problem that existing flange parts are prone to developing numerous pores during die casting, leading to loose structure and significant part deformation, this invention provides a die casting mold for flange parts.

[0004] This utility model is achieved through the following technical solution: a die-casting mold for flange-type parts, including a fixed mold and a moving mold, as well as a fixed mold cavity on the fixed mold and a moving mold cavity on the moving mold, characterized in that the moving mold is provided with a horizontal sprue communicating with the moving mold cavity and multiple slag storage grooves, wherein the horizontal sprue is tangentially connected to the moving mold cavity, the slag storage grooves are connected to the moving mold cavity through slag discharge grooves, and the moving mold is also provided with an venting groove communicating with the slag storage grooves, so that excess molten metal can be discharged into the slag storage grooves through the slag discharge grooves, and the venting grooves can ensure that the gas generated during casting can be discharged from the part, avoiding the problem of structural looseness and deformation caused by excessive porosity in the casting. Through the tangential connection, when the molten metal enters the mold cavity through the horizontal sprue, it can first flow to the part away from the gate, ensuring that venting and slag discharge can be carried out smoothly.

[0005] The fixed mold includes a horizontally arranged fixed mold base plate, a fixed mold plate located inside the fixed mold base plate, and a fixed mold cavity located on the fixed mold plate. The fixed mold has a gate at its center, which passes through the central through hole corresponding to the fixed mold base plate and the fixed mold plate. The upper end of the central through hole is open, and the lower end is connected to the horizontal runner so that molten metal can be poured into the mold cavity through the gate.

[0006] The gate is equipped with a gate sleeve, which is a cylindrical shape with open top and bottom ends, so as to protect the gate from corrosion by high-temperature molten metal.

[0007] The moving mold is located below the fixed mold and includes a horizontally arranged moving mold base plate and a support plate located above the moving mold base plate. The top of the support plate is connected to the moving mold template, and the bottom of the support plate is connected to the moving mold base plate through a pad. The moving mold base plate, the pad, and the support plate form a hollow layer. The top of the moving mold base plate is provided with a push plate and a push rod fixing plate located in the hollow layer. The push rod fixing plate is provided with multiple demolding push rods. The lower end of the multiple demolding push rods is connected to the push rod fixing plate, and the upper end piston rod extends upward and passes through the corresponding through holes of the support plate and the moving mold template, and then connects to the moving mold cavity, so that the cast part can be pushed out of the moving mold cavity by the demolding push rods.

[0008] The moving template has four vertically extending positioning pins at the top corners, and the fixed template has positioning holes at the bottom corners that mate with the positioning pins, so that the fixed and moving templates can be accurately closed.

[0009] The horizontal runner includes a central groove located in the center of the moving mold cavity and connected to the gate, and an arc-shaped flow channel. One end of the arc-shaped flow channel is connected to the central groove, and the other end is tangentially connected to the moving mold cavity, so that the molten metal can be tangentially introduced into the moving mold cavity through the horizontal runner.

[0010] The slag storage tank is designed as an elliptical groove, and multiple slag storage tanks are spaced around the periphery of the moving mold cavity. The inner end of each slag storage tank is connected to the moving mold cavity through a slag discharge tank, and the outer end is tangentially connected to the inner end of an exhaust tank. The exhaust tank is designed as a long groove with an open outer end, so that excess molten metal can enter the slag storage tank through the slag discharge tank during casting, preventing the molten metal from flowing out. At the same time, the exhaust tank discharges the gas generated during casting.

[0011] This utility model has the following advantages and effects: By adopting the above solution, excess molten metal is discharged into the slag storage tank through the slag discharge tank, while the venting tank can ensure that the gas generated during casting can be discharged from the part, avoiding the problem of loose structure and deformation caused by excessive porosity in the casting. Through the tangential connection, when the molten metal enters the mold cavity through the horizontal runner, it can first flow to the part away from the gate, ensuring that the venting and slag discharge can be carried out smoothly. Attached Figure Description

[0012] Figure 1 This is a top view of the present invention;

[0013] Figure 2 for Figure 1 AA view;

[0014] Figure 3 for Figure 1 BB view;

[0015] Figure 4 for Figure 3 CC view;

[0016] Figure 5 for Figure 2 Schematic diagram of the separation structure of the moving and fixed molds after die casting;

[0017] Figure 6 This is a schematic diagram of a flange-type part formed by die casting. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model. Example

[0019] The die-casting mold for flange parts provided by this utility model includes a fixed mold 14 and a moving mold 7, as well as a fixed mold cavity 15 on the fixed mold 14 and a moving mold cavity 16 on the moving mold 7. The moving mold 7 is provided with a horizontal sprue 3 and multiple slag storage tanks 12 that communicate with the moving mold cavity 16. The horizontal sprue 3 is tangentially connected to the moving mold cavity 16. The slag storage tanks 12 are connected to the moving mold cavity 16 through a slag discharge tank 21. The moving mold 7 is also provided with an exhaust tank 22 that communicates with the slag storage tank 12 so that excess molten metal can be discharged into the slag storage tank 12 through the slag discharge tank 21. The exhaust tank 22 can ensure that the gas generated during casting can be discharged from the part, avoiding problems such as loose structure and deformation caused by excessive porosity in the casting. Through the tangential connection, when the molten metal enters the moving mold cavity 6 through the horizontal sprue 3, it can first flow to the part away from the gate, ensuring smooth exhaust and slag discharge.

[0020] The fixed mold 14 includes a horizontally arranged fixed mold base plate 1, a fixed mold plate 13 located inside the fixed mold base plate 1, a fixed mold cavity 15 located on the fixed mold plate 13, and a gate 2 located at the center of the fixed mold 14. The gate 2 passes through the corresponding central through hole of the fixed mold base plate 1 and the fixed mold plate 13. The upper end of the central through hole is open and the lower end is connected to the horizontal runner 3 so that molten metal can be poured into the fixed mold cavity 15 and the moving mold cavity 16 through the gate 2 and the horizontal runner 3.

[0021] The gate 2 is provided with a gate sleeve 4, which is a cylindrical shape with open top and bottom ends, so as to protect the gate 2 from corrosion by high temperature molten metal.

[0022] The moving mold 7 is located below the fixed mold 14. It includes a horizontally arranged moving mold base plate 5 and a support plate 10 located above the moving mold base plate 5. The top of the support plate 10 is connected to the moving mold template 11. The bottom of the support plate 10 is connected to the moving mold base plate 5 through a pad 18. The moving mold base plate 5, the pad 18 and the support plate 10 form a hollow layer 9. The top of the moving mold base plate 5 is provided with a push plate 6 and a push rod fixing plate 8 located in the hollow layer 9. The push rod fixing plate 8 is provided with multiple demolding push rods 17. The lower end of the multiple demolding push rods 17 is connected to the push rod fixing plate 8, and the upper end piston rod extends upward and passes through the corresponding through holes of the support plate 10 and the moving mold template 11, and is connected to the moving mold cavity 16, so that the cast flange-type parts can be pushed out of the moving mold cavity 16 through the demolding push rods 17.

[0023] The four corners of the top of the moving template 11 are provided with vertically extending positioning pins 19, and the four corners of the bottom of the fixed template 13 are provided with positioning holes 20 that mate with the positioning pins 19, so that the fixed mold 14 and the moving mold 7 can be accurately closed and positioned through the positioning pins 19 and positioning holes 20.

[0024] The horizontal runner 3 includes a central groove 24 located in the center of the moving mold cavity 16 and connected to the gate 2, and an arc-shaped flow channel 23. One end of the arc-shaped flow channel 23 is connected to the central groove 24, and the other end is tangentially connected to the moving mold cavity 16, so that the molten metal can be tangentially introduced into the moving mold cavity 16 through the horizontal runner 3.

[0025] The slag storage tank 12 is an elliptical groove, and multiple slag storage tanks are spaced around the periphery of the moving mold cavity 16. The inner end of each slag storage tank 12 is connected to the moving mold cavity 16 through the slag discharge tank 21, and the outer end is tangentially connected to the inner end of the venting tank 22. The venting tank 22 is a long groove with an open outer end, so that excess molten metal during casting can enter the slag storage tank 12 through the slag discharge tank 21 to prevent the molten metal from flowing out. At the same time, the gas generated during casting is discharged to the outside through the venting tank 22.

[0026] Die-cast flange parts, such as Figure 6 As shown.

[0027] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A die-casting mold for flange-type parts, comprising a fixed mold and a movable mold, and a fixed mold cavity disposed on the fixed mold and a movable mold cavity disposed on the movable mold, characterized in that... The moving mold is provided with a horizontal sprue that communicates with the moving mold cavity and multiple slag storage grooves. The horizontal sprue is tangentially connected to the moving mold cavity, the slag storage grooves are connected to the moving mold cavity through slag discharge grooves, and the moving mold is also provided with an exhaust groove that communicates with the slag storage grooves.

2. The die-casting mold for flange-type parts according to claim 1, characterized in that... The fixed mold includes a horizontally arranged fixed mold base plate, a fixed mold plate located inside the fixed mold base plate, and a fixed mold cavity located on the fixed mold plate. The fixed mold has a gate at its center, which passes through the central through hole corresponding to the fixed mold base plate and the fixed mold plate. The upper end of the central through hole is open, and the lower end is connected to the horizontal runner.

3. The die-casting mold for flange-type parts according to claim 2, characterized in that... The gate is equipped with a gate sleeve, which is a cylindrical shape with open top and bottom.

4. The die-casting mold for flange-type parts according to claim 1, characterized in that... The moving mold is located below the fixed mold and includes a horizontally arranged moving mold base plate and a support plate located above the moving mold base plate. The top of the support plate is connected to the moving mold template, and the bottom of the support plate is connected to the moving mold base plate through a pad. The moving mold base plate, the pad, and the support plate form a hollow layer. The top of the moving mold base plate is provided with a push plate and a push rod fixing plate located in the hollow layer. The push rod fixing plate is provided with multiple demolding push rods. The lower end of the multiple demolding push rods is connected to the push rod fixing plate, and the upper end piston rod extends upward and passes through the corresponding through holes of the support plate and the moving mold template before connecting to the moving mold cavity.

5. The die-casting mold for flange-type parts according to claim 1, characterized in that... The moving template has four vertically extending positioning pins at the top corners, and the fixed template has positioning holes at the bottom corners that mate with the positioning pins.

6. The die-casting mold for flange-type parts according to claim 1, characterized in that... The horizontal runner includes a central groove located in the center of the moving mold cavity and connected to the gate, and an arc-shaped drainage channel. One end of the arc-shaped drainage channel is connected to the central groove, and the other end is tangentially connected to the moving mold cavity.

7. The die-casting mold for flange-type parts according to claim 1, characterized in that... The slag storage tank is designed as an elliptical groove, and multiple slag storage tanks are spaced around the periphery of the moving mold cavity. The inner end of each slag storage tank is connected to the moving mold cavity through a slag discharge tank, and the outer end is tangentially connected to the inner end of the venting tank. The venting tank is designed as a long groove with an open outer end.

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