Casting mold capable of reducing use cost of dead head

Abstract

The utility model discloses a casting mould capable of reducing the use cost of a riser, which comprises an upper mould and a lower mould, the lower end of the upper mould is provided with an upper casting cavity, the upper mould is provided with the riser and a pouring gate which are communicated with the upper casting cavity, and the upper end of the pouring gate is provided with a pouring gate; a lower casting cavity is formed in the upper end of the lower mold, an inner chilling block groove is formed in the bottom of the lower casting cavity, and an inner chilling block is arranged in the inner chilling block groove; an outer chilling block groove is formed in the lower end of the lower die, an outer chilling block is arranged in the outer chilling block groove, the outer chilling block is provided with an inner cavity, and the inner cavity of the outer chilling block is communicated with the circulating heat dissipation liquid path. The inner chilling block is arranged at the bottom of the casting, and the outer chilling block is arranged at the bottom of the die, so that the bottom of the casting is solidified in advance, a hot spot is upwards transferred to the position near the risers, the size and the number of the needed risers can be reduced, and the purpose of feeding the casting can be achieved through the small risers.

Description

Technical Field

[0001] The utility model relates to the technical field of casting, in particular to a casting mould which reduces the use cost of a riser. Background Art

[0002] Risers are often used in castings to feed shrinkage, especially for thicker and larger castings with numerous hot spots. This requires larger and more risers, significantly increasing casting costs. Therefore, it is crucial to find a process solution that reduces the use of risers.

[0003] Publication No. CN221336523U discloses a casting structure for a wheel-side reducer hub, comprising a hub casting mold and a double-layer casting conduit. The hub casting mold is a vertical structure with a feeding riser at the top and external chilling iron rings located inside and outside the bottom step. The double-layer casting conduit is installed on the side of the hub casting mold. Two rings of external chilling iron are installed at the bottom of the casting mold to replace the original side risers. This improves casting quality while solving the problems of multiple risers, high molten steel consumption, and heavy cutting work.

[0004] This prior art is suitable for wheel hubs with limited shapes and is not easily applicable to thick castings with flat bottoms. Utility Model Content

[0005] In view of the above-mentioned defects in the prior art, the purpose of the present invention is to provide a casting mold which reduces the cost of using a riser.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A casting mold that reduces the cost of using risers, comprising an upper mold and a lower mold, wherein the lower end of the upper mold is provided with an upper casting cavity, the upper mold is provided with a riser and a runner connected to the upper casting cavity, and the upper end of the runner is provided with a gate; the upper end of the lower mold is provided with a lower casting cavity, the bottom of the lower casting cavity is provided with an inner cooling iron groove, and an inner cooling iron is provided in the inner cooling iron groove; the lower end of the lower mold is provided with an outer cooling iron groove, and an outer cooling iron is provided in the outer cooling iron groove, and the outer cooling iron is provided with an inner cavity, and the inner cavity of the outer cooling iron is connected to a circulating heat dissipation liquid path.

[0008] Furthermore, the circulating heat dissipation liquid circuit includes a liquid pump and a heat dissipation box;

[0009] Specifically, the heat dissipation box is connected to the inner cavity of the outer chiller through a first pipeline and a second pipeline. The liquid pump is provided on the first pipeline or the second pipeline to pump the heat dissipation liquid from the heat dissipation box into the inner cavity of the outer chiller.

[0010] Furthermore, the heat dissipation box or the external chiller comprises a shell, pipeline connection ports are provided at both ends of the shell, and staggered partitions are provided inside the shell;

[0011] Specifically, the outer wall of the shell of the heat dissipation box is provided with heat dissipation fins, and a fan facing the heat dissipation box is provided outside the heat dissipation box.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] The utility model arranges an inner chiller at the bottom of the casting and an outer chiller at the bottom of the mold, so that the bottom of the casting solidifies in advance and the heat node is transferred upward to the vicinity of the riser, so that the size and number of the required risers can be reduced, and the purpose of shrinkage compensation of the casting can be achieved with smaller risers. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a structural schematic diagram of a casting mold for reducing the cost of using a riser in the utility model;

[0015] Figure 2 It is a schematic diagram of the internal structure of the cold iron and heat dissipation box in the utility model.

[0016] In the figure: 1. Upper mold; 2. Lower mold; 3. External chiller; 4. Liquid pump; 5. Fan; 6. Heat sink; 7. Riser; 8. Gate; 9. Runner; 10. Lower casting cavity; 11. Upper casting cavity; 12. Internal chiller; 13. Parting surface; 14. Housing; 15. Partition. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] See also Figure 1 The utility model provides a casting mold that reduces the cost of using risers, comprising an upper mold 1 and a lower mold 2. The upper mold 1 is provided with an upper casting cavity 11 at the lower end, and the upper mold 1 is provided with a riser 7 and a runner 9 connected to the upper casting cavity 11, and the upper end of the runner 9 is provided with a gate 8; the upper end of the lower mold 2 is provided with a lower casting cavity 10, and the bottom of the lower casting cavity 10 is provided with an inner cooling iron groove, and an inner cooling iron 12 is provided in the inner cooling iron groove, and the lower end of the lower mold 2 is provided with an outer cooling iron groove, and an outer cooling iron 3 is provided in the outer cooling iron groove. The outer cooling iron 3 is provided with an inner cavity, and the inner cavity of the outer cooling iron 3 is connected to the circulating heat dissipation liquid path.

[0019] The circulating heat dissipation liquid circuit includes a liquid pump 4 and a heat dissipation box 6. The heat dissipation box 6 is connected to the inner cavity of the outer chiller 3 through a first pipeline and a second pipeline. The liquid pump 4 is arranged on the first pipeline or the second pipeline to pump the heat dissipation liquid from the heat dissipation box 6 into the inner cavity of the outer chiller 3. The liquid pump 4 absorbs the cold liquid to prevent the liquid pump 4 from overheating and maintain the working efficiency of the liquid pump 4.

[0020] The heat dissipation box 6 not only stores the heat dissipation liquid, but also reduces the temperature of the heat dissipation liquid.

[0021] The heat dissipation box 6 or the external cold iron 3 includes an outer shell 14, and pipeline connection ports are set at both ends of the outer shell 14 for connecting the first pipeline and the second pipeline. Staggered partitions 15 are set in the outer shell 14 to make the inner cavity into a rotating shape, extend the liquid path, expand the heat exchange area, and improve the heat exchange efficiency. The outer wall of the outer shell of the heat dissipation box 6 is provided with heat dissipation fins, and a fan 5 facing the heat dissipation box 6 is provided outside the heat dissipation box 6 to improve the heat dissipation efficiency of the heat dissipation box 6.

[0022] Specifically, the liquid pump 3 is a hot oil pump with a relatively high operating temperature, and the heat dissipation liquid is thermal oil.

[0023] A casting mold that reduces the cost of using risers: When in use, the lower mold 2 is placed on the outer chiller 3, so that the outer chiller 3 is embedded in the outer chiller groove. The outer chiller 3 serves as a base. The upper mold 1 and the lower mold 2 are then closed together for casting. The inner chiller 12 and the outer chiller 3 jointly absorb heat, causing the hot spot to move upward. The circulating heat dissipation liquid circuit increases the amount of heat that can be absorbed by the outer chiller 3, allowing the hot spot of large castings to move upward. In this case, only a relatively small riser is needed to feed the hot spot of the casting, reducing the number of risers used and the cost of the mold. Production verification has shown that the cast castings are free of shrinkage.

[0024] All components not discussed in detail in this application and the connection methods of the components in this application are well-known technologies in the technical field and can be directly applied without further explanation.

[0025] In this utility model, the term "plurality" refers to two or more, unless otherwise specified. Terms such as "installed," "connected," "connected," and "fixed" should be interpreted broadly. For example, "connected" can mean fixed, removable, or integral; "connected" can mean directly or indirectly through an intermediary. Those skilled in the art will understand the specific meanings of these terms in this utility model based on specific circumstances.

[0026] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by terms such as "up", "down", "left", "right", "front" and "back" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the present invention.

[0027] Throughout this specification, terms such as "one embodiment," "some embodiments," and "specific embodiments" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0028] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A casting mold for reducing the cost of using a riser, comprising an upper mold and a lower mold, wherein the lower end of the upper mold is provided with an upper casting cavity, the upper mold is provided with a riser and a runner communicating with the upper casting cavity, the upper end of the runner is provided with a gate; the upper end of the lower mold is provided with a lower casting cavity, characterized in that: The bottom of the lower casting cavity is provided with an inner cooling iron groove, and the inner cooling iron is provided in the inner cooling iron groove; The lower end of the lower mold is provided with an external cooling iron groove, in which an external cooling iron is provided, and the external cooling iron is provided with an inner cavity, and the inner cavity of the external cooling iron is communicated with a circulating heat dissipation liquid path.

2. A casting mold for reducing the cost of using a riser according to claim 1, characterized in that: The circulating heat dissipation liquid circuit includes a liquid pump and a heat dissipation box; The heat dissipation box is connected to the inner cavity of the outer chiller through the first pipeline and the second pipeline. The liquid pump is arranged on the first pipeline or the second pipeline to pump the heat dissipation liquid from the heat dissipation box into the inner cavity of the outer chiller.

3. A casting mold for reducing the cost of using a riser according to claim 2, characterized in that: The heat dissipation box or the external chiller comprises a shell, pipeline connection ports are provided at both ends of the shell, and staggered partitions are provided inside the shell; The outer wall of the shell of the heat dissipation box is provided with heat dissipation fins, and a fan facing the heat dissipation box is provided outside the heat dissipation box.

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