Die-casting die for large-size thin-wall part

Abstract

The utility model provides a large-size thin-wall part die-casting die which comprises a die assembly, and the die assembly comprises a movable die base, a movable die plate, a water inlet pipe, a water outlet pipe, a through hole, an exhaust pipe, an electric telescopic rod, a connecting ring and a sliding rod. One side of the movable mold base is fixedly connected with a movable mold plate, the front surface of the movable mold plate is communicated with a water inlet pipe, the rear surface of the movable mold plate is communicated with a water outlet pipe, through holes are symmetrically formed in the inner side walls of the movable mold base and the movable mold plate, and the through holes are communicated with one end of an exhaust pipe. The exhaust pipe is connected with the vacuum equipment, the electric telescopic rod drives the connecting ring and the sliding rod to move, so that the exhaust pipe is communicated with the interior of the cavity, after die assembly, air in the cavity is pumped out through the vacuum equipment, the interior of the cavity is kept in a negative pressure state, the flow speed of metal melt is increased in the die-casting process, and the die-casting efficiency is improved. And therefore, the defects of shrinkage porosity and the like of the product are prevented, and the qualification rate of the product is improved.

Description

Technical Field

[0001] The utility model relates to a die-casting die, in particular to a die-casting die for large-sized thin-walled parts, belonging to the technical field of die-casting dies. Background Art

[0002] Die casting is a metal casting process, which is characterized by the use of the inner cavity of the mold to apply high pressure to the molten metal to produce castings. Die casting molds are a tool for casting metal parts, mainly used to complete the die casting process on a dedicated die forging machine. Die casting molds are widely used in industries such as automobiles, trucks, engineering vehicles, electrical instruments, telecommunications equipment, transportation, medical equipment, and light industrial hardware. They can produce engine housings, cylinder heads, security product housings, instrument and camera housings and brackets, electronic equipment housings and other parts.

[0003] When manufacturing large-sized thin-walled parts by die casting, due to the large surface area of ​​the casting, the small average wall thickness, and the poor fluidity of the molten metal, when the molten metal cannot quickly and fully fill the cavity, it is easy to cause defects such as shrinkage in the product, affecting the product qualification rate. Therefore, a die-casting mold for large-sized thin-walled parts is proposed. Utility Model Content

[0004] In view of this, the utility model provides a die-casting mold for large-sized thin-walled parts to solve or alleviate the technical problems existing in the prior art and at least provide a beneficial choice.

[0005] The technical solution of the embodiment of the utility model is implemented as follows: a die-casting mold for large-sized thin-walled parts, including a mold assembly, wherein the mold assembly includes a movable mold base, a movable mold plate, a water inlet pipe, a water outlet pipe, a through hole, an exhaust pipe, an electric telescopic rod, a connecting ring and a sliding rod;

[0006] One side of the movable mold base is fixedly connected with a movable mold plate, the front surface of the movable mold plate is connected with a water inlet pipe, and the rear surface of the movable mold plate is connected with a water outlet pipe. The inner side walls of the movable mold base and the movable mold plate are symmetrically provided with through holes, and the through holes are connected with one end of the exhaust pipe. Two electric telescopic rods are symmetrically installed on one side of the movable mold base, one end of the electric telescopic rod is fixedly connected with a connecting ring, and one side of the connecting ring is symmetrically fixedly connected with a sliding rod, and the sliding rod is slidably connected to the inner side wall of the through hole. After the mold is closed, the connecting ring and the sliding rod are driven to move by the electric telescopic rod, so that the exhaust pipe is connected with the inside of the cavity. One end of the exhaust pipe is connected to a vacuum device, and the air in the cavity is extracted by the vacuum device to keep the inside of the cavity in a negative pressure state, so as to increase the flow rate of the molten metal during the die-casting process, so that it can quickly and fully fill the cavity, prevent defects such as shrinkage and improve the qualified rate of the product, inject coolant through the water inlet pipe to cool the product, improve the product molding speed, and the coolant is discharged through the water outlet pipe after heating.

[0007] Further preferably: the mold assembly further includes a fixed mold base and a gate;

[0008] A gate is provided on one side of the fixed mold base.

[0009] Further preferably, one side of the fixed mold base is fixedly connected with a fixed mold plate.

[0010] Further preferably, a cavity is provided on one side of the fixed template.

[0011] Further preferably: an ejector assembly is provided on one side of the mold assembly, and the ejector assembly includes an ejector plate and a hydraulic cylinder;

[0012] A hydraulic cylinder is installed on one side of the ejection plate.

[0013] Further preferably, one end of the piston rod of the hydraulic cylinder is fixedly connected to the movable mold base.

[0014] Further preferably, a push rod is fixedly connected to one side of the ejector plate, and the push rod is slidably connected to the inner side wall of the movable mold base and the movable mold plate.

[0015] Further preferably, a guide rod is fixedly connected to one side of the ejection plate, and the movable mold seat is slidably connected to the outer side wall of the guide rod.

[0016] The embodiment of the utility model has the following advantages due to the adoption of the above technical solution:

[0017] The utility model connects the exhaust pipe to the vacuum equipment and drives the connecting ring and the sliding rod to move through the electric telescopic rod, so that the exhaust pipe is connected with the inside of the cavity. After the mold is closed, the air in the cavity is extracted through the vacuum equipment to keep the inside of the cavity in a negative pressure state, so as to increase the flow rate of the molten metal in the die-casting process, so that the molten metal can quickly and fully fill the cavity, prevent the product from having defects such as shrinkage, and improve the qualified rate of the product.

[0018] The above summary is for the purpose of description only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the utility model will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 This is a structural diagram from one perspective of the utility model;

[0021] Figure 2 This is another perspective structural diagram of the utility model;

[0022] Figure 3 This is a structural diagram of the movable template of the utility model;

[0023] Figure 4 This is a structural diagram of the connecting ring of the utility model.

[0024] Figure numerals: 10, mold assembly; 11, fixed mold base; 12, gate; 13, fixed mold plate; 14, cavity; 15, movable mold base; 16, movable mold plate; 17, water inlet pipe; 18, water outlet pipe; 19, through hole; 110, exhaust pipe; 111, electric telescopic rod; 112, connecting ring; 113, sliding rod; 20, ejector assembly; 21, ejector plate; 22, hydraulic cylinder; 23, ejector rod; 24, guide rod. DETAILED DESCRIPTION

[0025] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0026] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0027] like Figure 1-4 As shown, the embodiment of the utility model provides a die-casting mold for large-sized thin-walled parts, including a mold assembly 10, the mold assembly 10 includes a movable mold base 15, a movable mold plate 16, a water inlet pipe 17, a water outlet pipe 18, a through hole 19, an exhaust pipe 110, an electric telescopic rod 111, a connecting ring 112 and a sliding rod 113;

[0028] A movable mold plate 16 is fixedly connected to one side of the movable mold base 15, a water inlet pipe 17 is connected to the front surface of the movable mold plate 16, a water outlet pipe 18 is connected to the rear surface of the movable mold plate 16, through holes 19 are symmetrically provided on the inner side walls of the movable mold base 15 and the movable mold plate 16, and the through holes 19 are connected to one end of the exhaust pipe 110, and two electric telescopic rods 111 are symmetrically installed on one side of the movable mold base 15, one end of the electric telescopic rod 111 is fixedly connected to a connecting ring 112, and one side of the connecting ring 112 is symmetrically fixedly connected to a sliding rod 113, and the sliding rod 113 is slidably connected to the inner side wall of the through hole 19. After the mold is closed, The connecting ring 112 and the sliding rod 113 are driven to move by the electric telescopic rod 111, so that the exhaust pipe 110 is connected to the inside of the cavity 14. One end of the exhaust pipe 110 is connected to a vacuum device, and the air inside the cavity 14 is extracted by the vacuum device to keep the inside of the cavity 14 in a negative pressure state, so as to increase the flow rate of the molten metal during the die-casting process, so that it can quickly and fully fill the cavity 14, prevent the product from having defects such as shrinkage, and improve the qualified rate of the product. Coolant is injected through the water inlet pipe 17 to cool the product, thereby increasing the product molding speed. After the coolant is heated, it is discharged through the water outlet pipe 18.

[0029] In this embodiment, specifically: the mold assembly 10 further includes a fixed mold base 11 and a gate 12;

[0030] A gate 12 is formed on one side of the fixed mold base 11 , and the material is injected into the mold cavity 14 through the gate 12 .

[0031] In this embodiment, specifically: one side of the fixed mold base 11 is fixedly connected with a fixed mold plate 13 .

[0032] In this embodiment, specifically: a cavity 14 is provided on one side of the fixed mold plate 13 , and the material is molded in the cavity 14 .

[0033] In this embodiment, specifically: an ejector assembly 20 is provided on one side of the mold assembly 10, and the ejector assembly 20 includes an ejector plate 21 and a hydraulic cylinder 22;

[0034] A hydraulic cylinder 22 is installed on one side of the ejection plate 21 .

[0035] In this embodiment, specifically: one end of the piston rod of the hydraulic cylinder 22 is fixedly connected to the movable mold base 15, and the hydraulic cylinder 22 drives the movable mold base 15 to move to complete the mold closing and mold opening actions.

[0036] In this embodiment, specifically: a push rod 23 is fixedly connected to one side of the ejection plate 21, and the push rod 23 is slidably connected to the inner side walls of the movable mold base 15 and the movable mold plate 16, and the push rod 23 is used to eject the molded product.

[0037] In this embodiment, specifically: a guide rod 24 is fixedly connected to one side of the ejection plate 21, and the movable mold base 15 is slidably connected to the outer wall of the guide rod 24. The guide rod 24 plays a role in assisting movement and improving the stability of the movable mold base 15 during movement.

[0038] When the utility model is working: the hydraulic cylinder 22 drives the movable mold base 15 to move to complete the mold closing and opening actions. During the die-casting process, after the mold is closed, the electric telescopic rod 111 drives the connecting ring 112 and the sliding rod 113 to move, so that the exhaust pipe 110 is connected to the inside of the cavity 14. One end of the exhaust pipe 110 is connected to a vacuum device, and the air inside the cavity 14 is extracted by the vacuum device to keep the inside of the cavity 14 in a negative pressure state, so as to increase the flow rate of the molten metal during the die-casting process, so that it can quickly and fully fill the cavity 14, prevent the product from having defects such as shrinkage, and improve the qualified rate of the product. After the vacuuming is completed, the sliding rod 113 is reset, and the material is injected into the cavity 14 through the gate 12. After the die-casting is completed, the coolant is injected through the water inlet pipe 17 to cool the product, thereby improving the product molding speed.

[0039] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A die casting die for large-sized thin-walled parts, comprising a die assembly (10), characterized in that: The mold assembly (10) comprises a movable mold base (15), a movable mold plate (16), a water inlet pipe (17), a water outlet pipe (18), a through hole (19), an exhaust pipe (110), an electric telescopic rod (111), a connecting ring (112) and a sliding rod (113); A movable die plate (16) is fixedly connected to one side of the movable die seat (15); a water inlet pipe (17) is connected to the front surface of the movable die plate (16); a water outlet pipe (18) is connected to the rear surface of the movable die plate (16); through holes (19) are symmetrically provided on the inner side walls of the movable die seat (15) and the movable die plate (16); the through holes (19) are connected to one end of an exhaust pipe (110); two electric telescopic rods (111) are symmetrically installed on one side of the movable die seat (15); one end of the electric telescopic rod (111) is fixedly connected to a connecting ring (112); one side of the connecting ring (112) is symmetrically fixedly connected to a sliding rod (113); the sliding rod (113) is slidably connected to the inner side wall of the through hole (19).

2. A die-casting mold for large-sized thin-walled parts according to claim 1, characterized in that: The mold assembly (10) further comprises a fixed mold base (11) and a gate (12); A gate (12) is provided on one side of the fixed mold base (11).

3. A die-casting mold for large-sized thin-walled parts according to claim 2, characterized in that: A fixed die plate (13) is fixedly connected to one side of the fixed die seat (11).

4. A die-casting mold for large-sized thin-walled parts according to claim 3, characterized in that: A mold cavity (14) is provided on one side of the fixed mold plate (13).

5. The die-casting mold for large-sized thin-walled parts according to claim 1, characterized in that: An ejector assembly (20) is provided on one side of the mold assembly (10), and the ejector assembly (20) comprises an ejector plate (21) and a hydraulic cylinder (22); A hydraulic cylinder (22) is installed on one side of the ejection plate (21).

6. A die-casting mold for large-sized thin-walled parts according to claim 5, characterized in that: One end of the piston rod of the hydraulic cylinder (22) is fixedly connected to the movable die seat (15).

7. A die-casting mold for large-sized thin-walled parts according to claim 5, characterized in that: A push rod (23) is fixedly connected to one side of the ejection plate (21), and the push rod (23) is slidably connected to the inner side walls of the movable mold base (15) and the movable mold plate (16).

8. A die-casting mold for large-sized thin-walled parts according to claim 7, characterized in that: A guide rod (24) is fixedly connected to one side of the ejection plate (21), and the movable mold seat (15) is slidably connected to the outer side wall of the guide rod (24).

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