Aluminum alloy die-casting die for automobile structural member

Abstract

The utility model relates to die casting mould technical field especially an automobile structural member aluminum alloy die casting mould, including outer mould and inner mould, the outer mould includes upper die and lower die, the upper die and lower die all are established with accommodating groove that cooperates with the inner mould, the one side of lower die is provided with the installation site that cooperates with accommodating groove, the installation site is provided with the guide in the inner mould cooperation, the upper die is installed with the pouring opening, the lower extreme of pouring opening is connected with the guide piece, the upper die and lower die all are provided with the fixed structure that cooperates with the inner mould, through setting up accommodating groove installation has the inner mould of forming cavity, when the forming cavity abrasion deformation, can take out and change, thereby avoid mould overall scrap and cause waste, through setting up fixed structure to the inner mould is fixed, prevent the inner mould in the mould opening process loose and fall off, take out the inner mould simultaneously convenient maintenance and replacement.

Description

Technical Field

[0001] This utility model relates to the field of die casting mold technology, and in particular to an aluminum alloy die casting mold for automotive structural parts. Background Technology

[0002] Die casting molds are tools used to cast metal parts. They are tools used to complete the die casting process on a dedicated die casting and forging machine. The basic process of die casting is as follows: molten metal is first poured into the mold cavity at low or high speed. The mold has movable cavity surfaces, which are pressurized and forged as the molten metal cools. This process eliminates shrinkage cavities and porosity defects in the blank and also makes the internal structure of the blank reach the forged state with broken grains. The overall mechanical properties of the blank are significantly improved. The alloys used in die casting are mainly non-ferrous alloys. Ferrous metals (steel, iron, etc.) are rarely used due to mold material and other issues. Among non-ferrous alloy die castings, aluminum alloys are the most widely used, followed by zinc alloys.

[0003] Existing aluminum alloy die-casting molds typically consist of two parts: a fixed mold and a moving mold. The mold has a cavity, gating system, overflow system, ejection mechanism, and other structures that match the desired casting shape. For example, Chinese Patent Publication No. CN118950978A discloses a "die-casting mold for an aluminum alloy shell of an automotive structural component." This mold uses an arc groove ring to initially contact the injected material. The arc groove increases the contact surface with the injected material, allowing the arc groove ring to better transmit pressure through the cavity to the baffle, causing the spring to deform. Simultaneously, after deformation, the baffle and cavity move downwards, opening the gap between the baffle and the bottom post, allowing the material to enter the forming cavity through the gap. After injection stops, the baffle and cavity move upwards, allowing excess material to overlap through the gap, separating the material in the forming cavity from the material in the injection pipe. This prevents the material in the pipe from adhering to the material in the forming cavity after cooling, avoiding blockages in the injection pipe and increased difficulty in demolding.

[0004] However, in actual use, due to long-term use, scratches, cracks and other wear phenomena appear on the surface of the molding cavity. At the same time, excessively high mold temperature or insufficient cooling time may cause local deformation of the molding cavity, which in turn affects the geometric accuracy of the die casting. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies, such as scratches, cracks, and other wear phenomena on the surface of the molding cavity after long-term use, as well as the local deformation of the molding cavity, which affects the geometric accuracy of the die-cast parts. Therefore, this invention proposes an aluminum alloy die-casting mold for automotive structural parts.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] Design a die-casting mold for aluminum alloy automotive structural components, including an outer mold and an inner mold. The outer mold includes an upper mold and a lower mold. Both the upper mold and the lower mold have receiving grooves that mate with the inner mold. One side of the lower mold has a mounting position that mates with the receiving groove. A guide component that mates with the inner mold is provided in the mounting position. A pouring gate is installed on the upper mold. The lower end of the pouring gate is connected to the guide component. Both the upper mold and the lower mold have fixing structures that mate with the inner mold.

[0008] Furthermore, the fixing structure includes a positioning block, and corresponding slots are provided on both the upper and lower molds. An insert block is fixedly provided on each positioning block, and an insertion hole corresponding to the insert block is opened on each inner mold.

[0009] Furthermore, a groove is provided at the lower end of the slot, and a slider is slidably disposed in the groove. The slider is connected to the positioning block through a connecting structure.

[0010] Furthermore, the connection structure includes a connecting part fixedly disposed on the slider, and a connecting groove corresponding to the connecting part is provided on the positioning block, and the connecting groove is rotatably connected to the connecting part.

[0011] Furthermore, guide portions are fixedly provided on both sides of the positioning block, guide grooves corresponding to the guide portions are provided on both sides of the slide groove, and positioning structures that cooperate with the guide portions are provided on both the upper mold and the lower mold.

[0012] Furthermore, the positioning structure includes a positioning rod that is movably inserted into the upper mold and the lower mold, a positioning hole corresponding to the positioning rod is provided on the guide part, a first spring is provided between the positioning rod and the upper mold or the lower mold, and a toggle part is fixedly provided on the positioning rod.

[0013] Furthermore, a reset groove is provided at the lower end of the slider, and a mounting block that is inserted into the reset groove is fixedly provided at the bottom of the groove. A second spring is provided between the mounting block and the reset groove.

[0014] The beneficial effects of the aluminum alloy die-casting mold for automotive structural parts proposed in this utility model are as follows:

[0015] In this invention, an inner mold with a molding cavity is installed by setting a receiving groove. When the molding cavity is worn and deformed, it can be removed and replaced, thereby avoiding the waste caused by the overall scrapping of the mold.

[0016] Secondly, in this utility model, a fixing structure is set to fix the inner mold, preventing the inner mold from loosening and falling off during the mold opening process, while also making it convenient to remove the inner mold for maintenance and replacement. Attached Figure Description

[0017] Figure 1 This is a structural schematic diagram of an aluminum alloy die-casting mold for automotive structural parts proposed in this utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the insert block of this utility model;

[0019] Figure 3 This is an enlarged structural diagram of region A of this utility model;

[0020] Figure 4 This is a schematic diagram of the positioning rod of this utility model;

[0021] Figure 5 This is a schematic diagram of the mounting block of this utility model.

[0022] In the diagram: 1. Outer mold; 11. Upper mold; 12. Lower mold; 2. Inner mold; 3. Guide component; 4. Pour gate; 5. Fixing structure; 51. Positioning block; 52. Insert block; 53. Slider; 54. Connecting structure; 541. Connecting part; 55. Guide part; 56. Positioning structure; 561. Positioning rod; 562. First spring; 563. Actuating part; 57. Mounting block; 58. Second spring. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Reference Figure 1-5 An aluminum alloy die-casting mold for automotive structural parts includes an outer mold 1 and an inner mold 2 with a forming cavity. The outer mold 1 includes an upper mold 11 and a lower mold 12, the upper mold 11 being a moving mold and the lower mold 12 being a fixed mold. The inner mold 2 is divided into a corresponding inner upper mold and an inner lower mold. Both the upper mold 11 and the lower mold 12 are provided with receiving grooves that cooperate with the inner mold 2. One side of the lower mold 12 is provided with an installation position that cooperates with the receiving groove. A guide 3 that cooperates with the inner mold 2 is provided in the installation position. A pouring gate 4 is installed on the upper mold 11, and the lower end of the pouring gate 4 is connected to the guide 3. Both the upper mold 11 and the lower mold 12 are provided with a fixing structure 5 that cooperates with the inner mold 2.

[0025] In this utility model, an inner mold 2 with a molding cavity is installed by providing receiving grooves on both the upper mold 11 and the lower mold 12. When the molding cavity is worn and deformed, the inner mold 2 can be removed and replaced when the mold is opened, thereby avoiding the waste caused by the overall scrapping of the mold. Furthermore, the inner mold 2 is fixed by a fixing structure 5 to prevent it from loosening and falling off during the mold opening process when it does not need to be replaced.

[0026] Furthermore, in this embodiment, the fixing structure 5 includes a positioning block 51, and the upper mold 11 and the lower mold 12 are each provided with a corresponding slot. The positioning block 51 is fixedly provided with an insertion block 52, and the inner mold 2 is provided with an insertion hole corresponding to the insertion block 52. By inserting the insertion block 52 into the insertion hole of the inner mold 2, the inner mold 2 and the positioning block 51 are formed into an integral structure, thereby fixing the inner mold 2 and preventing it from falling off.

[0027] Furthermore, in this embodiment, a sliding groove is provided at the lower end of the slot, and a slider 53 is slidably disposed in the sliding groove. The slider 53 is connected to the positioning block 51 through a connecting structure 54. The slider 53 is a dovetail block or a T-shaped block, and the sliding groove is a corresponding dovetail groove or a T-shaped groove. The connection between the slider 53 and the positioning block 51 fixes the positioning block 51 and the inner mold 2 to prevent them from falling off.

[0028] It should be noted that, in this embodiment, the connecting structure 54 includes a connecting part 541 fixedly disposed on the slider 53. The positioning block 51 has a connecting groove corresponding to the connecting part 541. The connecting groove is rotatably connected to the connecting part 541. When it is necessary to remove the inner mold 2, the positioning block 51 is moved backward to separate the insert block 52 from the inner mold 2, so that the inner mold 2 can be removed for replacement. In order to make it easier to replace the inner mold, the positioning block 51 is rotated to separate it from the slot, increasing the activity space of the inner mold 2, thereby facilitating the removal and installation of the inner mold 2.

[0029] Furthermore, in this embodiment, guide portions 55 are fixedly provided on both sides of the positioning block 51, and guide grooves corresponding to the guide portions are opened on both sides of the slide groove. Positioning structures 56 that cooperate with the guide portions 55 are provided on the upper mold 11 and the lower mold 12. The guide portions 55 are restricted by the guide grooves, thereby fixing the positioning block 51 and preventing it from rotating and causing the inner mold 2 to fall off when it is not necessary to replace the inner mold 2, which is safer.

[0030] In detail, in this embodiment, the positioning structure 56 includes a positioning rod 561 that is movably inserted into the upper mold 11 and the lower mold 12. The guide portion 55 has a positioning hole corresponding to the positioning rod 561. A first spring 562 is provided between the positioning rod 561 and the upper mold 11 or the lower mold 12. A toggle portion 563 is fixedly provided on the positioning rod 561. By inserting the positioning rod 561 into the positioning hole, the positions of the guide portion 55, the positioning block 51, and the slider 53 are fixed to prevent movement during use and to prevent the inner mold 2 from falling off.

[0031] More specifically, in this embodiment, a reset groove is provided at the lower end of the slider 53, and a mounting block 57 that is inserted into the reset groove is fixedly provided at the bottom of the groove. A second spring 58 is provided between the mounting block 57 and the reset groove. By setting the second spring 58 to cooperate with the mounting block 57 and the reset groove, the moved slider 53 and the positioning block 51 are reset, and the inner mold 2 is clamped to facilitate installation.

[0032] Working method: During operation, the inner mold 2 with a forming cavity is installed by having receiving grooves on both the upper mold 11 and the lower mold 12. When the forming cavity is worn and deformed, when the mold is opened, the moving part 563 is moved upward to separate it from the positioning hole on the guide part 55. The positioning block 51 is moved backward to separate the insert block 52 from the inner mold 2 until the guide part 55 is separated from the guide groove. Then, the positioning block 51 is rotated to separate it from the slot, increasing the activity space of the inner mold 2, thereby facilitating the removal and installation of the inner mold 2 for replacement.

[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A die-casting mold for aluminum alloy automotive structural parts, comprising an outer mold (1) and an inner mold (2), characterized in that, The outer mold (1) includes an upper mold (11) and a lower mold (12). Both the upper mold (11) and the lower mold (12) are provided with receiving grooves that cooperate with the inner mold (2). One side of the lower mold (12) is provided with an installation position that cooperates with the receiving groove. The installation position is provided with a guide (3) that cooperates with the inner mold (2). The upper mold (11) is provided with a pouring port (4). The lower end of the pouring port (4) is connected to the guide (3). Both the upper mold (11) and the lower mold (12) are provided with a fixing structure (5) that cooperates with the inner mold (2).

2. The aluminum alloy die-casting mold for automotive structural parts according to claim 1, characterized in that: The fixed structure (5) includes a positioning block (51), and the upper mold (11) and the lower mold (12) are provided with corresponding slots. The positioning block (51) is fixedly provided with a plug (52), and the inner mold (2) is provided with a plug hole corresponding to the plug (52).

3. The aluminum alloy die-casting mold for automotive structural parts according to claim 2, characterized in that: The lower end of the slot is provided with a sliding groove, and a slider (53) is slidably disposed in the sliding groove. The slider (53) is connected to the positioning block (51) through a connecting structure (54).

4. The aluminum alloy die-casting mold for automotive structural parts according to claim 3, characterized in that: The connecting structure (54) includes a connecting part (541) fixedly disposed on the slider (53), and a connecting groove corresponding to the connecting part (541) is provided on the positioning block (51), and the connecting groove is rotatably connected to the connecting part (541).

5. The aluminum alloy die-casting mold for automotive structural parts according to claim 4, characterized in that: The positioning block (51) is fixedly provided with guide parts (55) on both sides, and guide grooves corresponding to the guide parts are opened on both sides of the slide groove. The upper mold (11) and the lower mold (12) are provided with positioning structures (56) that cooperate with the guide parts (55).

6. The aluminum alloy die-casting mold for automotive structural parts according to claim 5, characterized in that: The positioning structure (56) includes a positioning rod (561) that is movably inserted into the upper mold (11) and the lower mold (12). The guide part (55) is provided with a positioning hole corresponding to the positioning rod (561). A first spring (562) is provided between the positioning rod (561) and the upper mold (11) or the lower mold (12). A toggle part (563) is fixedly provided on the positioning rod (561).

7. The aluminum alloy die-casting mold for automotive structural parts according to claim 3, characterized in that: The lower end of the slider (53) is provided with a reset groove, and the bottom of the slider is fixedly provided with a mounting block (57) that is inserted into the reset groove. A second spring (58) is provided between the mounting block (57) and the reset groove.

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