Local pressurizing die for aluminum alloy die casting

Abstract

The utility model discloses an aluminum alloy die casting local pressurizing die which comprises a bottom plate, stand columns are fixedly connected to the four corners of the top of the bottom plate, a static die plate is fixedly connected to the top ends of the four stand columns, a movable die plate is connected to the bottom of the static die plate, and electric telescopic rods are symmetrically and fixedly connected to the top of the bottom plate. The end of a piston rod of the electric telescopic rod is fixedly connected with the movable mold plate, an upper mold cavity is formed in the bottom of the static mold plate, a lower mold cavity is formed in the top of the movable mold plate, the lower mold cavity communicates with the interior of the upper mold cavity, and local pressurizing mechanisms are arranged at the bottom of the movable mold plate and the four side walls of the movable mold plate correspondingly. The mold has the beneficial effects that the pressure condition of liquid on the four side walls and the bottom of the interior of the mold cavity can be detected through the matched arrangement of the plugging plate and the pressure sensor, so that measures can be taken in time, and the local pressurizing mechanisms are arranged on the four side walls and the bottom of the lower mold cavity; and pressure can be applied to parts with different local pressures according to a detection result.

Description

Technical Field

[0001] The utility model relates to the technical field of lamp processing, in particular to a local pressurizing die for an aluminum alloy die casting. Background Art

[0002] A lamp is an appliance that can transmit, distribute and change the distribution of light from a light source. It includes all the parts required to fix and protect the light source except the light source, as well as the line accessories necessary for connecting to the power supply. The lamp needs a casing to fix and protect the power cord, light-emitting parts (bulbs), etc., so that the lamp can be used safely. The parts of the lamp include aluminum alloy parts. Aluminum alloy die-castings are needed in the processing of the lamp. Pressurized molds are needed in the processing of aluminum alloy die-castings to die-cast the parts.

[0003] Die casting is a metal casting process. At present, in the die casting process of aluminum alloy die castings, it is easy for the local pressure to be insufficient, resulting in local roughness or low density of the product, resulting in product quality problems. According to a local pressurization mold for aluminum alloy die castings disclosed in Patent No. CN218503304 U, the device pushes the aluminum alloy into the interior of the movable mold insert through a piston body. Under the action of high pressure, the compression spring receives a certain degree of pressure. Through the elastic characteristics of the compression spring, under the limiting action of the blind hole, the compression spring feeds back the pressure to the limiting column, and the limiting column pushes the movable mold insert, thereby pressurizing the liquid inside the movable mold insert, thereby preventing the occurrence of lock holes. However, when the device is locally pressurized, it does not specifically understand the pressure conditions of each surface of the product, and directly performs local pressurization through the reaction of the spring, which is easy to cause the local pressure to fail to reach or the pressure to be excessive, and the use effect is low. For this reason, we propose a local pressurization mold for aluminum alloy die castings. Utility Model Content

[0004] The utility model aims to provide a local pressure die for aluminum alloy die castings to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a local pressurization mold for aluminum alloy die-castings, comprising a base plate, the top four corners of the base plate are fixedly connected with columns, and the tops of the four columns are fixedly connected with a static mold plate, the bottom of the static mold plate is connected with a dynamic mold plate, the top of the base plate is symmetrically fixedly connected with an electric telescopic rod, and the piston rod end of the electric telescopic rod is fixedly connected to the dynamic mold plate, an upper mold cavity is opened at the bottom of the static mold plate, a lower mold cavity is opened at the top of the dynamic mold plate, and the lower mold cavity is connected to the inside of the upper mold cavity, and the bottom of the dynamic mold plate and the four side walls of the dynamic mold plate are provided with a local pressurization mechanism.

[0006] Preferably, a pressure casting port is provided at the top of the static mold plate, and pouring channels are provided equidistantly at the bottom of the pressure casting port in the static mold plate, the pouring channels are connected to the inside of the pressure casting port, and the bottom end of the pouring channels is connected to the inside of the upper mold cavity.

[0007] Preferably, the local pressurizing mechanism includes a sealing plate, a pressure sensor, a pressurizing pipe, a connecting pipe and a branch pipe. An installation cavity is opened at the bottom and four inner walls of the lower mold cavity in the movable template, and a pressure sensor is fixedly installed in the installation cavity. A sealing plate is connected to the end of the pressure sensor in the installation cavity. A pressurizing pipe is provided at the bottom of the movable template and the four side walls of the movable template, and the end of the pressurizing pipe extends into the interior of the movable template and is connected to a connecting pipe. Both ends of the connecting pipe are connected to branch pipes, and the branch pipes are connected to the interior of the installation cavity.

[0008] Preferably, guide columns are fixedly connected to the outside of the four columns at the top of the base plate, and vertical positioning holes are equidistantly provided at the four corners of the bottom of the movable template. The ends of the guide columns extend into the positioning holes, and the guide columns are slidably connected inside the positioning holes.

[0009] Preferably, a convex plate is symmetrically and integrally provided at one end of the blocking plate located inside the installation cavity, and the two convex plates are slidably connected to the inner wall of the installation cavity.

[0010] Preferably, a one-way valve is installed on the outer side of one end of the pressure pipe located outside the movable template.

[0011] Preferably, a pressure gauge is installed on the outside of the pressurized pipe and outside the one-way valve.

[0012] Preferably, the end of the blocking plate away from the pressure sensor is located in the same plane as the inner wall of the lower mold cavity, and the side wall of the blocking plate and the end of the convex plate are sealed and connected to the inner wall of the installation cavity.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model can detect the pressure conditions of the liquid on the four side walls and the bottom of the mold cavity through the coordinated setting of the sealing plate and the pressure sensor, so as to facilitate timely measures to be taken; by arranging local pressurizing mechanisms on the four side walls and the bottom of the lower mold cavity, pressure can be applied to parts with different local pressures according to the detection results; the pressure conditions can be monitored by the pressure gauge, so as to achieve appropriate pressure and avoid product quality problems caused by excessive or insufficient pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a cross-sectional structural diagram of the connection between the static template and the dynamic template of the utility model;

[0016] Figure 3 It is a schematic structural diagram of the enlarged view of point A of the present utility model.

[0017] In the figure: 1. Base plate; 2. Column; 3. Static template; 4. Moving template; 5. Convex plate; 6. Electric telescopic rod; 7. Lower mold cavity; 8. Pressure casting mouth; 9. Pouring channel; 10. Upper mold cavity; 11. Installation cavity; 12. Sealing plate; 13. Pressure sensor; 14. Pressurized pipe; 15. Connecting pipe; 16. Branch pipe; 17. One-way valve; 18. Pressure gauge; 19. Local pressurization mechanism; 20. Guide column. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-3 The utility model provides a technical solution: a local pressure mold for aluminum alloy die castings, including a bottom plate 1, the top four corners of the bottom plate 1 are fixedly connected with columns 2, and the tops of the four columns 2 are fixedly connected with static mold plates 3, the bottom of the static mold plates 3 is connected with a dynamic mold plate 4, the top of the bottom plate 1 is symmetrically fixedly connected with electric telescopic rods 6, and the piston rod end of the electric telescopic rod 6 is fixedly connected to the dynamic mold plate 4, an upper mold cavity 10 is opened at the bottom of the static mold plate 3, a lower mold cavity 7 is opened at the top of the dynamic mold plate 4, and the lower mold cavity 7 is connected to the inside of the upper mold cavity 10, and the bottom of the dynamic mold plate 4 and the four side walls of the dynamic mold plate 4 are all provided with local pressure mechanisms 19.

[0020] It should be noted that when the utility model is used, liquid aluminum alloy is injected through the pressure casting port 8, and the liquid is evenly injected into the mold cavity through multiple pouring channels 9. Then, the external pressurizing device is connected to the pressure casting port 8 to apply high pressure to the inside of the mold cavity. After the pressurization is completed, the pressure conditions are detected respectively by the pressure sensors 13 on the four side walls and the bottom of the lower mold cavity 7. When the local pressure is insufficient, the pressurizing pipe 14 on the side of the insufficient pressure of the external pressurizing device is connected to pressurize the inside of the installation cavity 11. At the same time, the local pressurizing intensity is adjusted according to different degrees of pressure. The pressure degree of the sealing plate 12 is observed by the pressure gauge 18. The sealing plate 12 locally pressurizes the liquid inside the lower mold cavity 7 to prevent the occurrence of lock holes.

[0021] A pressure casting port 8 is provided at the top of the static mold plate 3 , and pouring channels 9 are provided equidistantly at the bottom of the pressure casting port 8 in the static mold plate 3 . The pouring channels 9 are connected to the inside of the pressure casting port 8 , and the bottom of the pouring channels 9 is connected to the inside of the upper mold cavity 10 .

[0022] It should be noted that the pressure casting port 8 facilitates the injection of aluminum alloy liquid, which is placed inside the mold cavity through the pouring channel 9. Moreover, by connecting the pressure casting port 8 with an external pressurizing device, high pressure can be applied to the injected aluminum alloy liquid to form the aluminum alloy liquid by die casting.

[0023] The local pressurizing mechanism 19 includes a sealing plate 12, a pressure sensor 13, a pressurizing pipe 14, a connecting pipe 15 and a branch pipe 16. An installation cavity 11 is opened at the bottom and four inner walls of the lower mold cavity 7 in the movable template 4, and a pressure sensor 13 is fixedly installed in the installation cavity 11. The end of the pressure sensor 13 in the installation cavity 11 is connected to the sealing plate 12. A pressurizing pipe 14 is provided at the bottom of the movable template 4 and the four side walls of the movable template 4, and the end of the pressurizing pipe 14 extends into the interior of the movable template 4 and is connected to a connecting pipe 15. Both ends of the connecting pipe 15 are connected to branch pipes 16, and the branch pipes 16 are connected to the interior of the installation cavity 11.

[0024] It should be noted that the pressure conditions are detected respectively by the pressure sensors 13 on the four side walls and the bottom of the lower mold cavity 7. Each pressure sensor 13 detects the pressure condition of each part. When the local pressure is lower than the pressure value set by the pressure sensor 13, it means that the pressure at that part is insufficient, and shrinkage holes are likely to occur. When the local pressure is insufficient, the pressure tube 14 on the side of the insufficient pressure of the external pressurizing device is connected to pressurize the inside of the installation cavity 11. At the same time, the local pressure intensity is adjusted according to different pressure levels. The pressure level of the sealing plate 12 is observed by the pressure gauge 18. The sealing plate 12 locally pressurizes the liquid inside the lower mold cavity 7 to prevent the occurrence of lock holes.

[0025] The top of the base plate 1 is located outside the four columns 2 and is fixedly connected with guide columns 20. The four corners of the bottom of the movable template 4 are equidistantly provided with vertical positioning holes. The ends of the guide columns 20 extend into the positioning holes, and the guide columns 20 are slidably connected inside the positioning holes.

[0026] It should be noted that when the movable template 4 moves up and down, the movable template 4 rises and falls outside the guide column 20, which ensures the stability of the movable template 4, facilitates the perfect fit between the movable template 4 and the static template 3, and ensures the accuracy of the die-casting product.

[0027] A convex plate 5 is symmetrically and integrally provided at one end of the blocking plate 12 located inside the installation cavity 11 , and the two convex plates 5 are slidably connected to the inner wall of the installation cavity 11 .

[0028] It should be noted that the provision of the protruding plate 5 can ensure that the blocking plate 12 is located inside the installation cavity 11 , thereby preventing the blocking plate 12 from being separated from the installation cavity 11 .

[0029] A one-way valve 17 is installed on the outer side of one end of the pressure pipe 14 located outside the movable template 4.

[0030] It should be noted that a one-way valve 17 is installed on the outside of the pressurizing pipe 14 to enable the pressure to reach the connecting pipe 15 from the pressurizing pipe 14, preventing the pressure inside the connecting pipe 15 from flowing back, thereby ensuring a good pressurizing effect.

[0031] A pressure gauge 18 is installed outside the pressure pipe 14 and outside the one-way valve 17 .

[0032] It should be noted that the pressure gauge 18 can clearly observe the pressure value to prevent the pressure from failing to achieve the desired effect.

[0033] One end of the blocking plate 12 away from the pressure sensor 13 is located in the same plane as the inner wall of the lower mold cavity 7 , and the side wall of the blocking plate 12 and the end of the protruding plate 5 are sealed and connected to the inner wall of the installation cavity 11 .

[0034] It should be noted that the sealing plate 12 and the convex plate 5 are sealedly connected to the inner wall of the installation cavity 11, so that when the branch pipe 16 passes high pressure into the installation cavity 11, the high pressure can push the sealing plate 12, so that the sealing plate 12 applies uniform pressure to one side of the liquid.

[0035] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0036] In addition, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first", "second", "third" and "fourth" may explicitly or implicitly include at least one of such features.

[0037] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A local pressure die for aluminum alloy die castings, comprising a bottom plate (1), characterized in that: The four corners of the top of the base plate (1) are fixedly connected to columns (2), and the tops of the four columns (2) are fixedly connected to a static mold plate (3), the bottom of the static mold plate (3) is connected to a dynamic mold plate (4), the top of the base plate (1) is symmetrically fixedly connected to an electric telescopic rod (6), and the piston rod end of the electric telescopic rod (6) is fixedly connected to the dynamic mold plate (4), the bottom of the static mold plate (3) is provided with an upper mold cavity (10), the top of the dynamic mold plate (4) is provided with a lower mold cavity (7), and the lower mold cavity (7) is connected to the inside of the upper mold cavity (10), and the bottom of the dynamic mold plate (4) and the four side walls of the dynamic mold plate (4) are provided with a local pressurizing mechanism (19).

2. The local pressure die for aluminum alloy die casting according to claim 1, characterized in that: A pressure casting port (8) is provided at the top of the static mold plate (3), and a pouring channel (9) is provided in the static mold plate (3) at an equidistant position from the bottom end of the pressure casting port (8), the pouring channel (9) is connected to the inside of the pressure casting port (8), and the bottom end of the pouring channel (9) is connected to the inside of the upper mold cavity (10).

3. The local pressure die for aluminum alloy die casting according to claim 1, characterized in that: The local pressurizing mechanism (19) comprises a sealing plate (12), a pressure sensor (13), a pressurizing pipe (14), a connecting pipe (15) and a branch pipe (16); an installation cavity (11) is provided at the bottom and four inner walls of the lower mold cavity (7) in the movable mold plate (4), and a pressure sensor (13) is fixedly installed in the installation cavity (11); a sealing plate (12) is connected to the end of the pressure sensor (13) in the installation cavity (11); a pressurizing pipe (14) is provided at the bottom of the movable mold plate (4) and the four side walls of the movable mold plate (4), and the end of the pressurizing pipe (14) extends into the interior of the movable mold plate (4) and is connected to a connecting pipe (15); both ends of the connecting pipe (15) are connected to branch pipes (16), and the branch pipes (16) are connected to the interior of the installation cavity (11).

4. The local pressure die for aluminum alloy die casting according to claim 1, characterized in that: The top of the base plate (1) is located outside the four columns (2) and is fixedly connected to guide columns (20). The four corners of the bottom of the movable template (4) are equidistantly provided with vertical positioning holes. The ends of the guide columns (20) extend into the positioning holes, and the guide columns (20) are slidably connected inside the positioning holes.

5. The local pressure die for aluminum alloy die casting according to claim 3, characterized in that: A convex plate (5) is symmetrically and integrally provided at one end of the blocking plate (12) located inside the installation cavity (11), and the two convex plates (5) are slidably connected to the inner wall of the installation cavity (11).

6. The local pressure die for aluminum alloy die casting according to claim 3, characterized in that: A one-way valve (17) is installed on the outer side of one end of the pressure pipe (14) located outside the movable template (4).

7. The local pressure die for aluminum alloy die casting according to claim 3, characterized in that: A pressure gauge (18) is installed outside the pressure pipe (14) and outside the one-way valve (17).

8. The local pressure die for aluminum alloy die casting according to claim 5, characterized in that: The end of the sealing plate (12) away from the pressure sensor (13) is located in the same plane as the inner wall of the lower mold cavity (7), and the side wall of the sealing plate (12) and the end of the convex plate (5) are both sealed and connected to the inner wall of the installation cavity (11).

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