A cam bearing cap die-casting mold

Abstract

The utility model belongs to a cam bearing cover pressure casting die belongs to pressure casting die technical field. The utility model discloses a material cake, material cake is connected with main runner, and main runner is connected with first sub -runner and second sub -runner respectively, first sub -runner is connected with first feed port, and second sub -runner is connected with second feed port and third feed port, first feed port, second feed port and third feed port are all connected with cavity, and the slide of slidable is arranged in the one side of cavity, and the inside of slide is equipped with spot cooling mechanism, and cavity is also connected with first overflow groove, second overflow groove, third overflow groove, fourth overflow groove, fifth overflow groove and sixth overflow groove, first overflow groove, second overflow groove, third overflow groove and fourth overflow groove are connected with wave board exhaust block, and fifth overflow groove is directly connected with first exhaust groove, and sixth overflow groove is directly connected with second exhaust groove. The utility model can solve the problems of existing technology, such as gas winding, production difficulty, poor slagging, material sticking and exhaust interference.

Description

Technical Field

[0001] This utility model belongs to the field of die casting mold technology, and specifically relates to a die casting mold for a cam bearing cover. Background Technology

[0002] Cam bearing caps, as crucial engine components, are typically manufactured using die casting. Existing die casting molds for cam bearing caps suffer from several drawbacks: First, their sprue cross-sectional area is too small, making them prone to air entrapment during high-speed aluminum filling, leading to porosity and scrapping. Second, the mold's mounting interface is usually only compatible with single-tonnage die casting machines (e.g., 500T), making production scheduling difficult and inflexible when that machine is occupied. Third, the overflow channel is not precisely positioned in the area where the aluminum is last filled, causing the lower-temperature molten metal with a large amount of gas to remain inside the casting and create defects. Furthermore, the mold slider lacks effective cooling, making it prone to material sticking due to overheating during production. Some overflow channels are interconnected rather than independent, leading to mutual interference and reduced venting efficiency. Finally, the mold lacks a bottom sealing plate, which can damage the die casting machine's moving mold base plate over long-term use. Utility Model Content

[0003] This invention addresses the aforementioned problems and overcomes the shortcomings of existing technologies by providing a die-casting mold for a cam bearing cover. This invention can solve problems such as air entrapment, difficult production, poor slag discharge, material adhesion, and exhaust interference in existing technologies.

[0004] To achieve the above objectives, the present invention adopts the following technical solution.

[0005] This utility model provides a die-casting mold for a cam bearing cap, characterized in that it includes a material cake connected to a main runner, the main runner being connected to a first sub-runner and a second sub-runner respectively; the first sub-runner is connected to a first inlet, and the second sub-runner is connected to a second inlet and a third inlet; the first inlet, the second inlet, and the third inlet are all connected to a cavity, a slidable slider is provided on one side of the cavity, the slider having a cooling mechanism inside, and the cavity is also connected to a first overflow groove, a second overflow groove, and... The mold has a third overflow trough, a fourth overflow trough, a fifth overflow trough, and a sixth overflow trough. The first overflow trough, the second overflow trough, the third overflow trough, and the fourth overflow trough are connected to the corrugated plate venting block. The fifth overflow trough is directly connected to the first venting trough, and the sixth overflow trough is directly connected to the second venting trough. A bottom sealing plate is provided on one side of the die-casting machine corresponding to the mold. A top rod plate is slidably provided on the moving mold base of the mold through guide pillars. Multiple sets of first tie rod mounting holes, second tie rod mounting holes, and third tie rod mounting holes are provided on the top rod plate.

[0006] Furthermore, the cross-sectional area of ​​the second gating channel is greater than the sum of the cross-sectional areas of the second feed inlet and the third feed inlet.

[0007] Furthermore, the cross-sectional area of ​​the second sprue is 1.2 times the sum of the cross-sectional areas of the second inlet and the third inlet.

[0008] Furthermore, the fourth overflow groove is located at the bottom of the cavity.

[0009] Furthermore, the cooling mechanism includes two cooling holes.

[0010] Furthermore, the first tie rod mounting hole is used for a 500T die-casting machine, the second tie rod mounting hole is used for a 400T die-casting machine, and the third tie rod mounting hole is used for a 650T die-casting machine.

[0011] Furthermore, the first exhaust channel and the second exhaust channel are set independently and do not pass through the wave plate exhaust block.

[0012] Furthermore, the wave plate exhaust block is connected to the first overflow groove, the second overflow groove, the third overflow groove, and the fourth overflow groove.

[0013] The beneficial effects of this utility model.

[0014] The cross-sectional area of ​​the second gating channel of this invention is larger than the sum of the cross-sectional areas of its downstream inlets, effectively reducing the flow velocity of the molten aluminum, stabilizing the filling process, and thus significantly reducing air entrapment and the rate of internal porosity in the product. The mold template is equipped with multiple sets of tie rod mounting holes, allowing it to be compatible with die-casting machines of various tonnages such as 400T, 500T, and 650T, solving the production bottleneck problem caused by the occupation of specific equipment. The fourth overflow channel is located at the bottom of the cavity, at the end of the final aluminum filling, effectively collecting the lower-temperature molten metal with a large amount of gas trapped at the front, preventing the lower-quality molten metal from remaining inside the product and forming scrap. Simultaneously, the fifth and sixth overflow channels are designed for independent venting, avoiding mutual interference between venting airflows and improving overall venting efficiency. An integrated cooling mechanism inside the slider effectively cools the slider, controlling its operating temperature and fundamentally preventing material sticking to the slider during production. Adding a bottom sealing plate to the bottom of the mold increases the contact area with the die-casting moving mold base plate, disperses the injection force, prevents the die-casting process and the moving mold base plate from being damaged, and extends the service life of the equipment. Attached Figure Description

[0015] To make the technical problems solved, the technical solutions, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0016] Figure 1 This is a front view cross-sectional structural diagram of this utility model.

[0017] Figure 2 This is a side view of the structure of this utility model.

[0018] Figure 3 This is a schematic diagram of the rear view structure of this utility model.

[0019] The markings in the diagram are as follows: 1 is the material cake, 2 is the main runner, 3 is the first sub-runner, 4 is the second sub-runner, 5 is the first feed inlet, 6 is the second feed inlet, 7 is the third feed inlet, 8 is the cavity, 9 is the first overflow groove, 10 is the second overflow groove, 11 is the third overflow groove, 12 is the fourth overflow groove, 13 is the fifth overflow groove, 14 is the sixth overflow groove, 15 is the corrugated plate vent block, 16 is the first vent groove, 17 is the second vent groove, 18 is the slider, 19 is the cooling hole, 20 is the bottom sealing plate, 21 is the guide post, 22 is the top rod plate, 23 is the first tie rod mounting hole, 24 is the second tie rod mounting hole, and 25 is the third tie rod mounting hole. Detailed Implementation

[0020] As shown in the accompanying drawings, this embodiment provides a die-casting mold for a cam bearing cover, including a material cake 1. The material cake 1 is connected to a main runner 2. The main runner 2 is connected to a first sub-runner 3 and a second sub-runner 4. The first sub-runner 3 is connected to a first inlet 5. The second sub-runner 4 is connected to a second inlet 6 and a third inlet 7. The first inlet 5, the second inlet 6, and the third inlet 7 are all connected to a cavity 8.

[0021] Molten aluminum is injected into the die-casting machine nozzle into the sprue 1 and then enters the main runner 2. The main runner 2 diverts the molten aluminum to the first sub-runner 3 and the second sub-runner 4. The first sub-runner 3 guides the molten aluminum to the first feed port 5 and into the mold cavity 8. The second sub-runner 4 simultaneously feeds the molten aluminum to the second feed port 6 and the third feed port 7, through which the molten aluminum enters the mold cavity 8. In particular, the cross-sectional area of ​​the second sub-runner 4 is designed to be 1.2 times the sum of the cross-sectional areas of the second feed port 6 and the third feed port 7. This "wide runner, narrow feed port" design acts like a buffer pool, effectively reducing the flow velocity of the molten aluminum before entering the mold cavity 8, allowing it to fill smoothly, thereby greatly reducing the problem of air entrapment caused by turbulence.

[0022] Cavity 8 is the space for product forming. A sliding slider 18 is provided on one side of cavity 8 for forming the lateral structure of the bearing cover. In order to prevent molten aluminum from adhering to slider 18 at high temperature, a cooling mechanism is machined inside slider 18. The cooling mechanism includes two cooling holes 19, which can be circulated with cooling water to cool slider 18.

[0023] The cavity 8 is also connected to a first overflow channel 9, a second overflow channel 10, a third overflow channel 11, a fourth overflow channel 12, a fifth overflow channel 13, and a sixth overflow channel 14. The fourth overflow channel 12 is located at the bottom of the cavity 8 to better collect the last filled molten aluminum. The first overflow channel 9, the second overflow channel 10, the third overflow channel 11, and the fourth overflow channel 12 are connected to the corrugated plate exhaust block 15. The gas and cold material collected by the first overflow channel 9, the second overflow channel 10, the third overflow channel 11, and the fourth overflow channel 12 are discharged through the corrugated plate exhaust block 15. The fifth overflow channel 13 is directly connected to the first exhaust channel 16, and the sixth overflow channel 14 is directly connected to the second exhaust channel 17. The first exhaust channel 16 and the second exhaust channel 17 are set independently and do not pass through the corrugated plate exhaust block 15. This "partially shared, partially independent" exhaust design avoids the back pressure and interference that may be caused by the convergence of all airflows, and especially ensures the smoothness of exhaust in key areas.

[0024] A bottom sealing plate 20 is provided on one side of the die-casting machine corresponding to the mold, and a bottom sealing plate 20 is provided at the bottom of the mold. It serves as a reinforcing pad between the mold and the die-casting machine's moving mold base, increasing the contact area and preventing the expensive die-casting machine table from being pressed into a dent.

[0025] An ejector plate 22 is slidably mounted on the moving mold base of the mold via guide pillars 21. Multiple sets of first tie rod mounting holes 23, second tie rod mounting holes 24, and third tie rod mounting holes 25 are provided on the ejector plate 22. The first tie rod mounting hole 23 is used for a 500T die-casting machine, the second tie rod mounting hole 24 for a 400T die-casting machine, and the third tie rod mounting hole 25 for a 650T die-casting machine. This allows one mold to be flexibly installed and used on three different types of equipment, greatly improving production flexibility.

[0026] It is understood that the above specific description of this utility model is only used to illustrate this utility model and is not limited to the technical solutions described in the embodiments of this utility model. Those skilled in the art should understand that modifications or equivalent substitutions can still be made to this utility model to achieve the same technical effect; as long as the use needs are met, they are all within the protection scope of this utility model.

Claims

1. A die-casting mold for a cam bearing cover, characterized in that, The mold includes a material cake (1), which is connected to the main gating system (2). The main gating system (2) is connected to the first sub-gating system (3) and the second sub-gating system (4). The first sub-gating system (3) is connected to the first inlet (5), and the second sub-gating system (4) is connected to the second inlet (6) and the third inlet (7). The first inlet (5), the second inlet (6), and the third inlet (7) are all connected to the mold cavity (8). A sliding slider (18) is provided on one side of the mold cavity (8). The slider (18) is equipped with a cooling mechanism. The mold cavity (8) is also connected to the first overflow groove (9), the second overflow groove (10), the third overflow groove (11), and the fourth overflow groove (12). The fifth overflow groove (13) and the sixth overflow groove (14) are connected to the first overflow groove (9), the second overflow groove (10), the third overflow groove (11) and the fourth overflow groove (12). The fifth overflow groove (13) is directly connected to the first vent groove (16). The sixth overflow groove (14) is directly connected to the second vent groove (17). A bottom plate (20) is provided on one side of the die-casting machine corresponding to the mold. A top rod plate (22) is slidably provided on the moving mold base of the mold through a guide post (21). Multiple sets of first tie rod mounting holes (23), second tie rod mounting holes (24) and third tie rod mounting holes (25) are provided on the top rod plate (22).

2. The die-casting mold for a cam bearing cover according to claim 1, characterized in that, The cross-sectional area of ​​the second sub-sprue (4) is greater than the sum of the cross-sectional areas of the second feed inlet (6) and the third feed inlet (7).

3. The die-casting mold for a cam bearing cover according to claim 2, characterized in that, The cross-sectional area of ​​the second sub-sprue (4) is 1.2 times the sum of the cross-sectional areas of the second feed inlet (6) and the third feed inlet (7).

4. The die-casting mold for a cam bearing cover according to claim 1, characterized in that, The fourth overflow groove (12) is located at the bottom of the cavity (8).

5. A die-casting mold for a cam bearing cover according to claim 1, characterized in that, The cooling mechanism includes two cooling holes (19).

6. The die-casting mold for a cam bearing cover according to claim 1, characterized in that, The first tie rod mounting hole (23) is used for a 500T die casting machine, the second tie rod mounting hole (24) is used for a 400T die casting machine, and the third tie rod mounting hole (25) is used for a 650T die casting machine.

7. The die-casting mold for a cam bearing cover according to claim 1, characterized in that, The first exhaust groove (16) and the second exhaust groove (17) are set independently and do not pass through the wave plate exhaust block (15).

8. A die-casting mold for a cam bearing cover according to claim 1, characterized in that, The wave plate exhaust block (15) is connected to the first overflow groove (9), the second overflow groove (10), the third overflow groove (11) and the fourth overflow groove (12).

Images