Mechanism for preventing displacement of die-casting aluminum alloy embedded insert and die-casting die

Abstract

The utility model discloses a mechanism for preventing a die-casting aluminum alloy embedded insert from shifting and a die-casting die, the mechanism for preventing the die-casting aluminum alloy embedded insert from shifting comprises an insert, an electromagnetic suction device is arranged in the insert, and a metal piece is placed on the insert; the die-casting die comprises a movable die base and a fixed die base, and the insert is installed on the movable die base. The steel alloy and the aluminum alloy are compounded together, so that the strength of an aluminum alloy product is improved, the defect that the local strength is insufficient when the aluminum alloy product is applied is overcome, and the product quality is improved. Before demolding, the electromagnetic suction device sucks and fixes the steel sleeve insert on the insert, and the electromagnetic suction device is automatically closed during demolding to enable a product to be smoothly demolded, so that the situation that the product quality is affected due to deviation of the steel sleeve insert caused by embedding and fixing modes such as interference fit is avoided.

Description

Technical Field

[0001] The utility model relates to the field of preventing displacement of embedded inserts in die-cast aluminum alloy, and specifically relates to a mechanism for preventing displacement of embedded inserts in die-cast aluminum alloy and a die-casting mold. Background Technique

[0002] The aluminum alloy die-casting process is an efficient and precise casting method. Molten aluminum alloy is injected into a die-casting mold under high pressure and forms parts with the required shape after cooling and solidification. Existing aluminum alloy die-casting molds are not only easy to disassemble but also reusable.

[0003] In the die-casting molds of the prior art, in addition to being easy to disassemble, the number of air holes in the product can be reduced by improving the inside of the mold, thereby improving the product quality. For example, the Chinese patent with the application number CN202211354096.2 discloses an aluminum casting die-casting mold. During die-casting, the air in the mold cavity passes through the through holes and is discharged, and then the pouring liquid in the mold cavity is die-cast and formed. Since the air is removed in advance through the through holes, the amount of air holes in the die-cast product is greatly reduced, and the strength of the formed die-cast part is prevented from being affected.

[0004] Although reducing air holes can improve the strength of aluminum alloy castings, due to the limitation of the strength of the product material itself, the local strength of aluminum alloy casting products cannot meet the required standards for actual application at the client side. Therefore, it is necessary to set high-strength solid alloy in the die-casting mold to be formed synchronously with the aluminum alloy to increase the local strength of the aluminum alloy product. However, in order to facilitate product demolding, the solid alloy cannot be fixedly embedded in one position; as the die-casting mold is continuously opened and closed, the relative position of the fixed alloy embedded in the mold will shift, making the die-cast product not meet the design requirements; at the same time, during die-casting, the fixed alloy will also be impacted by the aluminum liquid due to the gap between the fixed alloy and the die-casting mold, resulting in the shift of the relative position, affecting the actual size of the product, reducing the product quality, and even causing the product to be scrapped. Summary of the Utility Model

[0005] (1) Problems to be Solved

[0006] The technical problem to be solved by the utility model is to provide a mechanism for preventing displacement of embedded inserts in die-cast aluminum alloy and a die-casting mold according to the current situation of the prior art.

[0007] (2) Technical Solution

[0008] The utility model is realized through the following technical solutions:

[0009] The utility model provides a mechanism for preventing displacement of embedded inserts in die-cast aluminum alloy, which includes an insert, and an electromagnetic tightening device is arranged inside the insert. A metal part is placed on the insert.

[0010] By adopting the above technical solution, the metal part is fixed on the insert through the electromagnetic attraction device, which can ensure that the fixed position of the metal part will not shift, and improve the quality of die-cast products.

[0011] Further, the metal part is composed of one or more alloys among steel alloy, titanium alloy and copper alloy.

[0012] Further, the metal part is a steel sleeve insert; the metal part is annular.

[0013] Further, a metal part placement position is provided on the insert, and the metal part is placed on the metal part placement position.

[0014] Further, a heat insulation sleeve is provided between the insert and the electromagnetic attraction device.

[0015] Further, the insert is installed on the moving die block of the die-casting mold.

[0016] The present utility model provides a die-casting mold, which includes an insert, and an electromagnetic attraction device is arranged inside the insert. A metal part is placed on the insert. The metal part is composed of one or more alloys among steel alloy, titanium alloy and copper alloy. The metal part is a steel sleeve insert, and the metal part is annular. A metal part placement position is provided on the insert, and the metal part is placed on the metal part placement position. A heat insulation sleeve is provided between the insert and the electromagnetic attraction device. The insert is installed on the moving die block of the die-casting mold. The die-casting mold further includes a moving die block and a fixed die block, and the insert is installed on the moving die block.

[0017] By adopting the above technical solution, the above mechanism for preventing the displacement of the die-cast aluminum alloy embedded insert is arranged inside the die-casting mold, and it cooperates to complete the composite molding of the aluminum alloy and the steel sleeve insert, improving the local strength of the die-cast product to meet the requirements of practical applications.

[0018] Further, a moving die cavity is installed inside the moving die block, and a fixed die cavity is installed inside the fixed die block.

[0019] (III) Beneficial effects

[0020] In the production of aluminum alloy products, the present utility model fixes the steel sleeve insert on the insert on the moving die block. During die-casting, the steel sleeve insert is combined with the aluminum alloy and demolded synchronously as the product. By the method of combining the steel alloy and the aluminum alloy, the strength of the aluminum alloy product is improved, the defect of insufficient local strength in the application of the aluminum alloy product is overcome, and the product quality is improved. The steel sleeve insert is attracted and fixed on the insert through the electromagnetic attraction device. When demolding, the electromagnetic attraction device is automatically turned off to enable the product to be smoothly demolded, avoiding the offset of the steel sleeve insert caused by interference fit and other fitting and fixing methods, which affects the product quality. In addition, a heat insulation sleeve is provided between the insert and the electromagnetic attraction device, which can prevent the electromagnetic attraction device from being damaged due to the influence of high temperature. Description of the drawings

[0021] The accompanying drawings, which form a part of this application, are used to provide a further understanding of the present utility model. The schematic embodiments and descriptions thereof of the present utility model are used to explain the present utility model and do not constitute an improper limitation to the present utility model.

[0022] Figure 1 is a three-dimensional view of a mechanism for preventing displacement of pre-embedded inserts in die-cast aluminum alloy according to the present utility model;

[0023] Figure 2 is a schematic cross-sectional view of a mechanism for preventing displacement of pre-embedded inserts in die-cast aluminum alloy according to the present utility model;

[0024] Figure 3 is a schematic cross-sectional structure view of the die-casting mold according to the present utility model;

[0025] The reference numerals are explained as follows:

[0026] 1. Insert; 2. Electromagnetic tightening device; 3. Metal part; 4. Steel sleeve insert; 5. Metal part placement position; 6. Heat insulation sleeve; 7. Die-casting mold; 8. Moving die block; 9. Fixed die block; 10. Moving die cavity; 11. Fixed die cavity. Detailed implementation manners

[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0028] In the description of this application, it should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0029] In the description of this application, it should be understood that the orientation or positional relationship indicated by terms such as "thickness", "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to this application.

[0030] Please refer to Figures 1-3, the utility model provides a technical solution: a mechanism for preventing displacement of pre-embedded inserts in die-cast aluminum alloy and a die-casting mold.

[0031] A mechanism for preventing displacement of pre-embedded inserts in die-cast aluminum alloy includes an insert 1, and an electromagnetic tightening device 2 is arranged inside the insert 1. A metal part 3 is placed on the insert 1. Generally, the metal part 3 is a hollow cylinder and is in interference fit with the protruding cylinder arranged in the middle of the insert 1. When the insert 1 at the moving die end drives the metal part 3 to move, the position of the metal part 3 will inevitably shift. This technical solution firmly attracts the metal part 3 to the insert 1 by using the electromagnetic tightening device 2. Before demolding, the electromagnetic tightening device 2 attracts and fixes the steel sleeve insert 4 to the insert 1, and the electromagnetic tightening device 2 is automatically turned off during demolding to enable the product to be demolded smoothly, which can ensure that the fixed position of the metal part 3 will not shift, and improve the quality and yield rate of die-cast products.

[0032] Specifically, the metal part 3 is composed of one or more alloys among steel alloy, titanium alloy and copper alloy. By using alloys with different material components and adopting metal parts with different densities and shapes, the needs of different strength requirements in parts of die-cast parts can be customized to be met.

[0033] Specifically, a metal part placement position 5 is arranged on the insert 1, and the metal part 3 is placed on the metal part placement position 5. In this embodiment, a cylindrical protrusion is arranged on the insert 1 to provide the metal part placement position 5, so that the steel sleeve insert 4 can be fitted and placed on the cylindrical protrusion at the center of one end of the insert 1. In addition, when dealing with different designs, different styles of metal part placement positions 5 can also be customized according to different metal parts 3. The metal part placement position 5 can provide good bearing capacity for the metal part 3, so that the metal part 3 is more stable in the predetermined design position of product forming.

[0034] Specifically, a heat insulation sleeve 6 is arranged between the insert 1 and the electromagnetic tightening device 2. It can prevent the electromagnetic tightening device 2 from being damaged by high temperature.

[0035] Specifically, the insert 1 is installed on the moving die block 8 of the die-casting mold 7. The installation method of the insert 1 on the moving die block 8 includes fixing with bolts, fixing with a pressing plate, and cooperating and fixing with positioning devices such as positioning pins and positioning blocks.

[0036] A die-casting mold includes an insert 1, and an electromagnetic tightening device 2 is arranged inside the insert 1. A metal part 3 is placed on the insert 1. The metal part 3 is composed of one or more alloys among steel alloy, titanium alloy and copper alloy. The metal part 3 is a steel sleeve insert 4, and the metal part 3 is annular. A metal part placement position 5 is arranged on the insert 1, and the metal part 3 is placed on the metal part placement position 5. A heat insulation sleeve 6 is arranged between the insert 1 and the electromagnetic tightening device 2. The insert 1 is installed on the moving die block 8 of the die-casting mold 7. The die-casting mold 7 further includes a moving die block 8 and a fixed die block 9, and the insert 1 is installed on the moving die block 8.

[0037] By adopting the above technical solution, the mechanism for preventing the displacement of the pre-embedded insert in die-cast aluminum alloy is arranged inside the die-casting mold 7 to cooperate with the composite molding of the aluminum alloy and the steel sleeve insert 4, improving the local strength of the die-cast product to meet the requirements of practical applications. Among them, the following two composite molding processes may occur between the metal part 3 and the aluminum liquid in the cavity: 1. At a sufficiently high temperature, the surface layer of the steel shell may be locally melted and mixed with the aluminum liquid to form a metallurgical bond. 2. The aluminum liquid solidifies on the surface of the steel shell, and at the same time, aluminum and iron elements diffuse at the interface to form a diffusion bonding layer.

[0038] Specifically, a moving die cavity 10 is installed in the moving die block 8, and a fixed die cavity 11 is installed in the fixed die block 9. By providing a detachable moving die cavity 10 in the moving die and a detachable fixed die cavity 11 in the fixed die, the die-cast product is cooled and formed between the moving die cavity 10 and the fixed die cavity 11. This facilitates the replacement of the die components when producing die-cast products with different designs.

[0039] Specifically, the die-casting mold 7 may further include ejector pins, a demolding mechanism, and other inserts that serve as non-fixed metal parts 3. By providing these components, the die-casting mold 7 is optimized. The ejector pins can reduce the generation of air holes and improve the product quality. Automatic demolding through the demolding mechanism can reduce labor costs and improve production efficiency.

[0040] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A mechanism for preventing the displacement of pre-embedded inserts in die-cast aluminum alloy, characterized in that: It includes an insert, and an electromagnetic suction device is arranged inside the insert; a metal part is placed on the insert; the metal part is a steel sleeve insert; the metal part is annular; a placement position for the metal part is arranged on the insert, and the metal part is placed on the placement position for the metal part.

2. A mechanism for preventing displacement of pre-embedded inserts in die-cast aluminum alloy, according to claim 1, characterized in that: A heat insulation sleeve is arranged between the insert and the electromagnetic suction device.

3. A mechanism for preventing the displacement of pre-embedded inserts in die-cast aluminum alloy, according to claim 1, characterized in that: The insert is installed on the moving die block of the die-casting mold.

4. A die-casting mold, comprising the mechanism for preventing the displacement of the pre-embedded insert in die-cast aluminum alloy according to any one of claims 1 to 3, characterized in that, It further includes a moving die block and a fixed die block, and the insert is installed on the moving die block.

5. A die-casting mold according to claim 4, characterized in that: A moving die cavity is installed inside the moving die block, and a fixed die cavity is installed inside the fixed die block.

Images