A type of shaft cover casting mold

Abstract

This utility model provides a shaft cover casting mold, comprising: an upper mold, in which an upper mold core is fixed and a feed port is provided; the upper mold core has two upper mold cavities that match the upper contour of the shaft cover, and the two upper mold cavities are centrally symmetrically arranged; and a lower mold, in which a lower mold core is fixed and a sprue cup is fixed below the feed port; the lower mold core has two contour blocks that match the lower contour of the shaft cover; a main runner is provided in the lower mold, and a first branch runner group and a second branch runner group are respectively provided on both sides of the main runner, the first branch runner group and the second branch runner group are respectively connected to the two contour blocks, and overflow grooves are provided on both sides of the contour blocks. This shaft cover casting mold can cast two shaft covers at once, and during the casting process, it can smoothly vent air, ensuring the forming quality of the shaft cover.

Description

Technical Field

[0001] This utility model relates to the field of casting, and in particular to a shaft cover casting mold. Background Technology

[0002] In the field of shaft cap casting molds, traditional casting molds typically employ linear venting channels, which have significant drawbacks in actual casting processes. The linear venting channel has a single venting path, and the gas flow is easily affected by the shape of the casting and the flow of molten metal, leading to poor venting. This results in residual gas inside the casting, causing casting defects such as porosity and inclusions, affecting the density and mechanical properties of the casting. Furthermore, traditional casting molds can only produce one shaft cap at a time, resulting in low efficiency. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a shaft cover casting mold that can cast two shaft covers at once. During the casting process, it can smoothly vent gas without backflow or eddy currents, ensuring the forming quality of the shaft cover.

[0004] To achieve the above objectives, this utility model adopts the following technical solution: a shaft cover casting mold, comprising:

[0005] An upper mold is provided, in which an upper mold core is fixed and a feed port is provided. A sprue cup is fixed below the feed port. The upper mold core is provided with two upper mold cavities that match the contour of the shaft cover. The two upper mold cavities are arranged in a centrally symmetrical manner.

[0006] The lower mold has a fixed lower mold core, and the lower mold core has two contour blocks that match the lower contour of the shaft cover. The two contour blocks are also centrally symmetrical. A main channel is also opened in the lower mold. A first branch channel group and a second branch channel group are respectively provided on both sides of the main channel. The first branch channel group and the second branch channel group are respectively connected to the two contour blocks. An overflow groove is provided on both sides of the contour blocks.

[0007] It also includes a first side module and a second side module fixed on both sides of the casting mold. The first side module and the second side module are provided with wave-shaped venting grooves. The first venting groove and the wave-shaped venting groove in the lower mold are connected. The other end of the first venting groove is connected to the contour block.

[0008] Furthermore, the molding block is embedded in the lower mold.

[0009] Furthermore, both the first side module and the second side module include an upper side module and a lower side module, the wave-shaped exhaust groove is disposed in the lower side module, and the upper side module is provided with a wave-shaped contour strip.

[0010] Furthermore, the wavy exhaust groove has a second exhaust groove at its tail end.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. This shaft cover casting mold can cast two shaft covers at once, and during the casting process, it can smoothly vent air to ensure the forming quality of the shaft cover.

[0013] 2. By embedding the molding block into the lower mold, it can be fastened with screws. If the molding block is damaged and needs maintenance, it can be quickly disassembled and maintained.

[0014] 3. By setting up the first side module and the second side module, the exhaust distance can be increased, making it easier for impurities in the molten metal to be deposited in the exhaust groove, reducing the amount of impurities entering the casting. At the same time, it can also disperse the thermal shock of the molten metal to the exhaust groove, extending the service life of the exhaust groove. Attached Figure Description

[0015] Figure 1 This is a structural diagram of the present invention;

[0016] Figure 2 This is a structural diagram of the lower mold core of this utility model;

[0017] Figure 3 This is a structural diagram of the two side modules of the lower mold core of this utility model after removing the upper side mold;

[0018] Figure 4 This is a structural diagram of the upper mold core of this utility model;

[0019] Figure 5 This is a structural diagram of the upper side mold of the two side modules of this utility model.

[0020] In the diagram: 1. Upper mold; 2. Upper mold core; 3. Inlet; 4. Sprue cup; 5. Upper mold cavity; 6. Lower mold core; 7. Imitation block; 8. Main runner; 9. First branch runner group; 10. Second branch runner group; 11. Overflow groove; 12. First side mold group; 13. Second side mold group; 14. Wave-shaped venting groove; 15. Wave-shaped imitation strip; 16. Straight venting groove; 17. Upper side mold; 18. Lower side mold; 19. Lower mold; Detailed Implementation

[0021] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0022] like Figures 1 to 5 The shown is a shaft cover casting mold, comprising:

[0023] An upper mold 1 is provided, in which an upper mold core 2 is fixed. An inlet 3 is also provided in the upper mold 1. The upper mold core 2 is provided with two upper mold cavities 5 that match the contour of the shaft cover. The two upper mold cavities 5 are arranged in a centrally symmetrical manner.

[0024] A lower mold 19 is provided, in which a lower mold core 6 is fixed. A sprue cup 4 is fixed below the inlet 3. The lower mold core 6 is provided with two contour blocks 7 that match the lower contour of the shaft cover. The two contour blocks are also centrally symmetrical. A main runner 8 that connects to the sprue cup is also provided in the lower mold 19. A first branch runner group 9 and a second branch runner group 10 are provided on both sides of the main runner 8. The first branch runner group and the second branch runner group are respectively connected to the two contour blocks. An overflow groove 11 is provided on both sides of the contour blocks.

[0025] It also includes a first side module 12 and a second side module 13 fixed on both sides of the casting mold. The first side module 12 and the second side module 13 are provided with wave-shaped venting grooves 14. The first venting groove 16 in the lower mold 19 is connected to the wave-shaped venting groove 14. The other end of the first venting groove 16 is connected to the contour block.

[0026] The process of using this utility model is as follows: In the process of casting the shaft cover, the upper mold 1 and the lower mold 19 are first closed. After the mold is closed, molten metal is injected from the feed port 3. The feed port enters the sprue cup 4 through the channel reserved on the upper mold core and flows into the main channel 8 through the sprue cup 4. Since the main channel 8 is provided with the first branch channel group 9 and the second branch channel group 10, the molten metal will flow out from the first branch channel group 9 and the second branch channel group 10 and enter the cavity formed by the contour block and the upper mold 1, gradually filling the cavity, thereby realizing the one-time molding of two shaft covers. During the filling process, excess solution will enter the overflow groove 11 to solidify, and finally be blocked by other parts of the upper mold 1 after mold closing, and solidify thereafter. At the same time, excess gas will be discharged from the first venting groove 16 and enter the wave-shaped venting groove 14. The wave-shaped venting groove 14, through its tortuous shape, allows for a longer venting channel to be arranged in the same space, thereby increasing the venting area and helping to more effectively discharge the gas in the cavity. At the same time, it can reduce the gas flow speed, making the gas flow in the venting groove more stable, reducing backflow and eddy current phenomena during the gas flow process, thereby reducing gas flow resistance, improving venting efficiency, and preventing gas from flowing back into the cavity, causing porosity in the casting.

[0027] Furthermore, the molding block 7 is embedded in the lower mold 19. Specifically, the molding block 7 of this invention is embedded in the lower mold 19 and can be fastened with screws. If damage occurs and maintenance is required, it can be quickly disassembled and maintained.

[0028] Furthermore, both the first side module 12 and the second side module 13 include an upper side module 17 and a lower side module 18. The upper side module is fixed on the upper mold, and the lower side module is fixed on the lower mold. The wave-shaped venting groove 14 is disposed in the lower side module 18, and the upper side module 17 is provided with a wave-shaped contour strip 15. Specifically, the wave-shaped contour strip and the wave-shaped venting groove are matched to form a wave-shaped venting groove. The wave-shaped venting groove 14 of this utility model is disposed in the first side module 12 and the second side module 13. By setting the first side module 12 and the second side module 13, the venting distance can be increased. Increasing the venting distance can prolong the residence time of the molten metal near the venting groove, making it easier for impurities in the molten metal to be deposited in the venting groove, reducing the impurities entering the casting. At the same time, it can also disperse the thermal shock of the molten metal to the venting groove, reduce the local temperature rise, reduce the probability of the venting groove failing due to thermal fatigue, and extend the service life of the venting groove.

[0029] Furthermore, the wavy venting groove 14 has a second venting groove 17 at its tail end. The second venting groove 17 at the tail end of the wavy venting groove 14 is straight, providing a more direct and smooth discharge path for the gas, ensuring that the gas can be discharged from the mold quickly and thoroughly, effectively reducing defects such as porosity and bubbles inside the casting, further improving the quality and performance of the casting, and increasing the yield rate of casting production.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A shaft cover casting mold characterized by, include: An upper mold is provided, in which an upper mold core is fixed and a feed port is provided. The upper mold core is provided with two upper mold cavities that match the contour of the shaft cover. The two upper mold cavities are arranged in a centrally symmetrical manner. The lower mold has a lower mold core fixed in it, and a sprue cup fixed below the inlet of the lower mold core. The lower mold core has two contour blocks that match the lower contour of the shaft cover. The two contour blocks are also centrally symmetrical. The lower mold also has a main runner that connects to the sprue cup. The main runner has a first branch runner group and a second branch runner group on both sides. The first branch runner group and the second branch runner group are respectively connected to the two contour blocks. The contour blocks have overflow grooves on both sides. It also includes a first side module and a second side module fixed on both sides of the casting mold. The first side module and the second side module are provided with wave-shaped venting grooves. The first venting groove and the wave-shaped venting groove in the lower mold are connected. The other end of the first venting groove is connected to the contour block.

2. A shaft cover casting mold according to claim 1, characterized in that: The molding block is embedded in the lower mold.

3. A shaft cover casting mold according to claim 2, wherein: The first side module and the second side module each include an upper side module and a lower side module. The wave-shaped venting groove is disposed in the lower side module, and the upper side module is provided with a wave-shaped contour strip.

4. A shaft cover casting mold according to claim 3, wherein: The wavy exhaust channel has a second exhaust channel at its tail end.

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