Die casting mold for magnesium alloy computer accessories

Abstract

This utility model discloses a die-casting mold for magnesium alloy computer parts. The mold aims to solve the problem that in existing magnesium alloy computer parts die-casting processes, the use of inclined guide posts to pull apart the core-pulling movable block in the lower mold easily leads to wear and reduces service life. The mold includes an upper mold and a lower mold. The upper surface of the lower mold has through grooves on all four sides, and a movable block is slidably disposed inside the through grooves. A core-pulling mold is fixedly connected to the inner side of the movable block. Die-casting cavities are formed between the four corners of the upper and lower molds and the core-pulling mold. This utility model fixes a fixed base with roller assemblies in the mounting groove on the movable block. When the upper and lower molds are closed, the inclined guide post is inserted into the inclined guide hole on the fixed base and positioned between two guide rollers. At this time, the guide rollers can rotate, and the inclined guide post is limited by the guide rollers on both sides, thereby reducing wear on the inclined guide post and improving its service life.

Description

Technical Field

[0001] This utility model belongs to the field of computer accessory molding technology, specifically relating to a die-casting mold for magnesium alloy computer accessories. Background Technology

[0002] Magnesium alloys, as a lightweight, high-strength, high-specific-stiffness metallic material with excellent electromagnetic shielding and heat dissipation properties, are finding increasingly widespread use in computer components. In laptops, magnesium alloys are extensively used in key components, not only reducing the weight of the chassis but also enhancing the product's texture and appearance. The internal frame is also frequently made of magnesium alloy, providing a stable support structure for various electronic components inside the computer.

[0003] In the existing die-casting process of magnesium alloy computer parts, inclined guide pillars are used to pull open the core-pulling movable block in the lower mold to achieve demolding of magnesium alloy computer parts. Since the advantage of injection molding is high production speed, the inclined guide pillars and the inclined guide holes in the core-pulling movable block are prone to wear during high-frequency contact, which reduces the service life. Utility Model Content

[0004] (1) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a die-casting mold for magnesium alloy computer parts. This mold aims to solve the problem that in the existing die-casting process of magnesium alloy computer parts, the inclined guide post pulls open the core-pulling movable block in the lower mold, which easily leads to wear and reduces service life.

[0006] (2) Technical solution

[0007] To solve the above-mentioned technical problems, this utility model provides a die-casting mold for magnesium alloy computer parts. The mold includes an upper mold and a lower mold. The upper surface of the lower mold has through grooves on all four sides. A movable block is slidably arranged inside the through groove. A core-pulling mold is fixedly connected to the inner side of the movable block. Die-casting cavities are formed between the four corners of the upper mold and the lower mold and the core-pulling mold. The lower surface of the upper mold has inclined guide posts fixedly connected to all four sides. The upper surface of the movable block has an installation groove. A fixing seat is fixedly connected inside the installation groove by screws. The fixing seat has inclined guide holes corresponding to the inclined guide posts. Roller assemblies are set on the inner walls of the left and right sides of the inclined guide holes through adjusting components. Operating holes communicating with the installation groove are opened on the left and right sides of the movable block.

[0008] Preferably, the movable block includes a fixedly connected mounting part and a sliding part, and a groove is provided on the lower surface of the upper mold. The mounting part is located inside the groove, and the depth of the groove is greater than the height of the mounting part.

[0009] Furthermore, the roller assembly includes two movable plates. The bottom end of the inclined guide hole is provided with a mounting cavity. The movable plate is located inside the mounting cavity and is fixedly connected to the first slider on both the front and rear sides. The inner walls of the front and rear sides of the mounting cavity are provided with first grooves corresponding to the first sliders. A U-shaped frame is fixedly connected to the inner side of the movable plate. The inner walls of the front and rear sides of the U-shaped frame are rotatably connected to the guide rollers through bearings.

[0010] Furthermore, the adjustment assembly includes lead screws threaded to the left and right sides of the fixed base. One end of the lead screw is rotatably connected to the movable plate via a bearing, and the other end of the lead screw has a wrench groove.

[0011] Furthermore, a locking nut is fixedly connected to the outer surface of the lead screw, and the operating hole is larger than the size of the locking nut.

[0012] Furthermore, the lower mold has a base plate fixedly connected to both sides of the lower surface via support plates. A demolding plate is set between the two support plates. Multiple demolding ejector rods are fixedly connected to the upper surface of the demolding plate. The top of the demolding ejector rods extends to the die-casting cavity. A gate is opened on the upper mold.

[0013] Furthermore, the bottom end of the inclined guide post has a rounded structure and penetrates the lower surface of the movable block, and the inner bottom wall of the through groove is provided with a clearance groove corresponding to the inclined guide post.

[0014] (3) Beneficial effects

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] 1. This utility model fixes the fixed base with the roller assembly in the mounting groove on the movable block. When the upper mold and the lower mold are closed, the inclined guide post is inserted into the inclined guide hole on the fixed base and is located between the two guide rollers. At this time, the guide rollers can rotate. The inclined guide post is limited by the guide rollers on both sides, thereby reducing the wear of the inclined guide post and improving its service life.

[0017] 2. This utility model separates the upper mold and lower mold to expose the movable block. Then, a tool is inserted through the operating hole and into the wrench slot to rotate the screw. Since the screw is threadedly connected to the fixed seat, the screw can drive the movable plate, U-shaped frame and guide roller to move during the rotation, thereby adjusting the gap between the inclined guide post and the guide roller, ensuring tight contact between the upper mold and lower mold and the core-pulling mold after the upper mold and lower mold are closed, thus improving the quality of product die casting. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0019] Figure 2 This is a front view cross-sectional structural diagram of this utility model.

[0020] Figure 3 This is the utility model Figure 2 A magnified structural diagram of point A in the middle.

[0021] Figure 4 This is a three-dimensional structural diagram of the fixing base of this utility model.

[0022] Figure 5 This is a bottom-view three-dimensional structural diagram of the fixing base of this utility model.

[0023] Figure 6 This is a bottom view of the fixed base of this utility model.

[0024] The markings in the attached diagram are as follows: 1. Upper mold; 2. Lower mold; 3. Through slot; 4. Movable block; 5. Core-pulling mold; 6. Die-casting cavity; 7. Angled guide post; 8. Mounting slot; 9. Screw; 10. Fixed seat; 11. Angled guide hole; 12. Adjustment component; 13. Roller assembly; 14. Operating hole; 101. Sprue; 201. Support plate; 202. Base plate; 203. Demolding plate; 204. Demolding ejector pin; 301. Clearance groove; 401. Mounting part; 402. Sliding part; 403. Groove; 1201. Lead screw; 1202. Wrench groove; 1203. Locking nut; 1301. Movable plate; 1302. Mounting cavity; 1303. First slider; 1304. First slide groove; 1305. U-shaped frame; 1306. Guide roller. Detailed Implementation

[0025] This specific embodiment is a die-casting mold for magnesium alloy computer parts, and its structural schematic diagram is shown below. Figures 1-6 As shown, the mold includes an upper mold 1 and a lower mold 2. The upper surface of the lower mold 2 has through grooves 3 on all four sides. A movable block 4 is slidably arranged inside the through groove 3. A core-pulling mold 5 is fixedly connected to the inner side of the movable block 4. The four corners between the upper mold 1 and the lower mold 2 form a die-casting cavity 6 with the core-pulling mold 5. The lower surface of the upper mold 1 has inclined guide posts 7 fixedly connected on all four sides. The upper surface of the movable block 4 has an installation groove 8. A fixing seat 10 is fixedly connected inside the installation groove 8 by screws 9. An inclined guide hole 11 corresponding to the inclined guide post 7 is opened on the fixing seat 10. Roller assemblies 13 are set on the inner walls of the left and right sides of the inclined guide hole 11 through adjusting components 12. The left and right sides of the movable block 4 have operating holes 14 communicating with the installation groove 8.

[0026] like Figure 1 and Figure 2As shown: In this embodiment, the movable block 4 includes a fixedly connected mounting part 401 and a sliding part 402. A groove 403 is provided on the lower surface of the upper mold 1. The mounting part 401 is located inside the groove 403. The depth of the groove 403 is greater than the height of the mounting part 401. In this way, the screw 9 will not affect the mold closing of the upper mold 1 and the lower mold 2. The core-pulling mold 5 is fixedly connected to the sliding part 402. The operating hole 14 is opened on the mounting part 401.

[0027] like Figure 3 and Figure 5 As shown: In this embodiment, the roller assembly 13 includes two movable plates 1301. The bottom end of the inclined guide hole 11 is provided with a mounting cavity 1302. The movable plate 1301 is located inside the mounting cavity 1302 and is fixedly connected to the front and rear sides with first sliders 1303. The inner walls of the front and rear sides of the mounting cavity 1302 are provided with first grooves 1304 corresponding to the first sliders 1303. The inner side of the movable plate 1301 is fixedly connected to a U-shaped frame 1305. The inner walls of the front and rear sides of the U-shaped frame 1305 are rotatably connected to guide rollers 1306 through bearings. In this way, the inclined guide post 7 is inserted into the inclined guide hole 11 on the fixed seat 10 and is located between the two guide rollers 1306. At this time, the guide rollers 1306 can rotate. The inclined guide post 7 is limited by the guide rollers 1306 on both sides, thereby reducing the wear of the inclined guide post 7 and improving its service life.

[0028] like Figure 3 and Figure 4 As shown: In this embodiment, the adjusting component 12 includes a lead screw 1201 threadedly connected to the left and right sides of the fixed base 10. One end of the lead screw 1201 is rotatably connected to the movable plate 1301 through a bearing, and the other end of the lead screw 1201 is provided with a wrench groove 1202. By separating the upper mold 1 and the lower mold 2 to expose the movable block 4, a tool is used to pass through the operating hole 14 and insert into the wrench groove 1202 to rotate the lead screw 1201. Since the lead screw 1201 is threadedly connected to the fixed base 10, the lead screw 1201 can drive the movable plate 1301, the U-shaped frame 1305 and the guide roller 1306 to move during the rotation, thereby adjusting the gap between the inclined guide post 7 and the guide roller 1306, ensuring that the upper mold 1 and the lower mold 2 are in close contact with the core-pulling mold 5 after mold closing, and improving the quality of product die casting.

[0029] like Figure 3 and Figure 4 As shown: In this embodiment, a locking nut 1203 is fixedly connected to the outer surface of the lead screw 1201, and the operating hole 14 is larger than the size of the locking nut 1203; by setting the locking nut 1203, the locking nut 1203 is loosened by using a sleeve when rotating the lead screw 1201, and after adjustment, the locking nut 1203 is tightened to prevent the lead screw 1201 from rotating arbitrarily.

[0030] like Figure 1 and Figure 2 As shown: In this embodiment, the lower mold 2 has a base plate 202 fixedly connected to both the left and right sides of the lower surface of the mold 2 via a support plate 201. A demolding template 203 is provided between the two support plates 201. Multiple demolding ejector rods 204 are fixedly connected to the upper surface of the demolding template 203. The top of the demolding ejector rods 204 extends to the die-casting cavity 6. A gate 101 is provided on the upper mold 1. The demolding template 203 drives the demolding ejector rods 204 to move upward, ejecting the formed product.

[0031] like Figure 2 and Figure 3 As shown: In this embodiment, the bottom end of the inclined guide post 7 is a round head structure and penetrates the lower surface of the movable block 4. The inner bottom wall of the through groove 3 is provided with a relief groove 301 corresponding to the inclined guide post 7. The inner walls of the front and rear sides of the through groove 3 are provided with second sliding grooves. The front and rear sides of the sliding part 402 are fixedly connected with second sliders. The second sliding groove is slidably connected inside the second slider, so that the movable block 4 can only move laterally along the through groove 3.

[0032] Working principle: During use, the fixed seat 10, which is equipped with the roller assembly 13, is fixed to the mounting groove 8 on the movable block 4 by screws 9. When the upper mold 1 and the lower mold 2 are closed, the inclined guide post 7 is inserted into the inclined guide hole 11 on the fixed seat 10 and is located between the two guide rollers 1306. At this time, the guide rollers 1306 can rotate. The inclined guide post 7 is limited by the guide rollers 1306 on both sides, thereby reducing the wear of the inclined guide post 7 and improving its service life. Then, the injection punch of the die-casting machine injects molten metal at a high speed. The molten metal is injected from the gate 101 under high pressure and high speed. Then, the molten metal quickly fills the die-casting cavity 6 along the flow channel and enters the holding pressure stage. When it solidifies to a certain extent, the mold begins to open. At this time, the upper mold 1 and the lower mold 2 separate. Since the movable block 4 can only move laterally along the through groove 3, the inclined guide post 7 on the upper mold 1 causes the movable block 4 and the core-pulling mold 5 to move outward until the core-pulling mold 5 completely detaches from the forming support. Then, the ejector plate 203 drives the ejector pin 204 to move upward and eject the formed product.

[0033] All technical features in this embodiment can be freely combined according to actual needs.

[0034] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. A die-casting mold for magnesium alloy computer parts, the mold comprising an upper mold (1) and a lower mold (2), characterized in that: The upper surface of the lower mold (2) is provided with through grooves (3) on all four sides. A movable block (4) is slidably arranged inside the through groove (3). A core-pulling mold (5) is fixedly connected to the inner side of the movable block (4). A die-casting cavity (6) is formed between the four corners of the upper mold (1) and the lower mold (2) and the core-pulling mold (5). An inclined guide post (7) is fixedly connected to the lower surface of the upper mold (1). An installation groove (8) is provided on the upper surface of the movable block (4). A fixed seat (10) is fixedly connected inside the installation groove (8) by screws (9). An inclined guide hole (11) corresponding to the inclined guide post (7) is provided on the fixed seat (10). Roller assemblies (13) are provided on the inner walls of the left and right sides of the inclined guide hole (11) through the adjustment assembly (12). An operation hole (14) communicating with the installation groove (8) is provided on the left and right sides of the movable block (4).

2. The die-casting mold for magnesium alloy computer accessories according to claim 1, characterized in that, The movable block (4) includes a fixedly connected mounting part (401) and a sliding part (402). The lower surface of the upper mold (1) is provided with a groove (403). The mounting part (401) is located inside the groove (403). The depth of the groove (403) is greater than the height of the mounting part (401).

3. The die-casting mold for magnesium alloy computer accessories according to claim 2, characterized in that, The roller assembly (13) includes two movable plates (1301). The bottom end of the inclined guide hole (11) is provided with a mounting cavity (1302). The movable plate (1301) is located inside the mounting cavity (1302) and is fixedly connected to the front and rear sides with first sliders (1303). The inner walls of the front and rear sides of the mounting cavity (1302) are provided with first grooves (1304) corresponding to the first sliders (1303). The inner side of the movable plate (1301) is fixedly connected with a U-shaped frame (1305). The inner walls of the front and rear sides of the U-shaped frame (1305) are rotatably connected to the guide rollers (1306) through bearings.

4. The die-casting mold for magnesium alloy computer accessories according to claim 3, characterized in that, The adjustment assembly (12) includes a lead screw (1201) threaded to the left and right sides of the fixed base (10). One end of the lead screw (1201) is rotatably connected to the movable plate (1301) through a bearing, and the other end of the lead screw (1201) is provided with a wrench groove (1202).

5. The die-casting mold for magnesium alloy computer accessories according to claim 4, characterized in that, A locking nut (1203) is fixedly connected to the outer surface of the lead screw (1201), and the operating hole (14) is larger than the size of the locking nut (1203).

6. The die-casting mold for magnesium alloy computer accessories according to claim 5, characterized in that, The lower mold (2) has a base plate (202) fixedly connected to the left and right sides of the lower surface by a support plate (201). A demolding plate (203) is provided between the two support plates (201). Multiple demolding ejector rods (204) are fixedly connected to the upper surface of the demolding plate (203). The top of the demolding ejector rods (204) extends to the die-casting cavity (6). A gate (101) is provided on the upper mold (1).

7. The die-casting mold for magnesium alloy computer accessories according to claim 6, characterized in that, The bottom end of the inclined guide post (7) is a round head structure and penetrates the lower surface of the movable block (4). The inner bottom wall of the through groove (3) is provided with a relief groove (301) corresponding to the inclined guide post (7).

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