Short-time forced cooling spline type sprue spreader

Abstract

The utility model relates to the technical field of hub casting, and discloses a short-time forced cooling spline type sprue spreader which comprises a sprue spreader body, a spline type groove is formed in the conical surface of the sprue spreader body, and the spline type groove can serve as a pouring gate for filling molten aluminum into a mold cavity and a channel for feeding the molten aluminum. And a water cooling structure is arranged in the sprue spreader body. The spline-shaped groove can be used as a pouring gate for filling molten aluminum into a mold cavity and a molten aluminum feeding channel, so that a molten aluminum filling channel and a feeding channel are expanded, the filling efficiency and the feeding capacity are improved, the defect that air holes and cracks are easily formed at a hub riser is overcome, the repair rate and the rejection rate of a hub blank are reduced, and the service life of the hub blank is prolonged. The increase of the production cost is restrained; meanwhile, due to the spline-shaped groove structure, the pouring area and thickness of the riser of the hub are increased, and the stress crack defect of the riser is further overcome; and due to the arrangement of the water cooling structure, the cooling effect of short-time forced cooling can be achieved, and the cooling process requirement of the sprue spreader body is met.

Description

Technical Field

[0001] The utility model relates to the technical field of aluminum alloy wheel hub casting, in particular to a spline type diversion cone with short-time intense cooling. Background Art

[0002] With the increasingly fierce market competition, aluminum alloy wheel hub manufacturers have been stricter in controlling product quality and production costs. Reasonably reducing the generation of waste products has become the key work of current technical improvement. Through the analysis of the current waste product situation, the shrinkage cavity crack defect of the product has become a key problem affecting product quality. The reasons for this are mainly that the relative thickness of the wheel hub riser is relatively thin and the runner is narrow during the casting process of the product, and the feeding capacity of the molten aluminum is limited during the cooling process, which is easy to produce defects such as pores and cracks. In addition, the riser area remains at a high temperature for a long time, and the cooling rate of the molten aluminum is low, which is easy to produce stress cracks during the solidification process of the molten aluminum. This problem has continuously troubled on-site production and urgently needs to be solved.

[0003] Based on this, developing a spline type diversion cone with short-time intense cooling for actual production to improve the shrinkage cavity crack defect of the wheel hub, reduce the rejection rate, and save the production cost of enterprises is an urgent problem to be solved at present. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a spline type diversion cone with short-time intense cooling for the above problems, so as to solve the problems of cracks and pore defects at the wheel hub riser during the use of the existing diversion cone.

[0005] To solve the above technical problems, the technical solution adopted by the utility model is as follows:

[0006] A spline type diversion cone with short-time intense cooling includes a diversion cone body. A spline-shaped groove is formed on the conical surface of the diversion cone body, and the spline-shaped groove can be used as a runner for molten aluminum to fill the mold cavity and a channel for molten aluminum feeding.

[0007] Preferably, the profile of the spline-shaped groove is a curve with smooth transition to play a stable guiding role for the filling molten aluminum.

[0008] Preferably, the notch of the spline-shaped groove is arranged corresponding to the spoke part of the wheel hub blank to widen the feeding channel of the spoke part.

[0009] Preferably, a water cooling structure for cooling and temperature reduction of the diversion cone body is arranged inside the diversion cone body. The water cooling structure includes a water inlet pipe that can be connected to a cooling water source. A cooling cavity is formed in the diversion cone body corresponding to the water inlet pipe. The water inlet pipe is inserted into the cooling cavity, and the gap between the water inlet pipe and the inner wall of the cooling cavity serves as a return water channel for the cooling water.

[0010] Preferably, water outlet holes are formed in the side wall of the water inlet pipe, and the water outlet holes are arranged corresponding to the middle part of the shunt cone body to increase the cooling intensity of the middle part of the shunt cone body.

[0011] Preferably, a plurality of water outlet holes are evenly distributed along the circumferential direction of the water inlet pipe to improve the uniformity of the inner wall cooling of the shunt cone body.

[0012] Preferably, a plug is arranged at the bottom of the water inlet pipe for blocking the water inlet pipe.

[0013] The beneficial effects of the present utility model are as follows: by arranging spline-shaped grooves on the conical surface of the shunt cone body, the present utility model can be used as a runner for molten aluminum to fill the mold cavity and a channel for molten aluminum feeding during the wheel casting process, thereby expanding the molten aluminum filling channel and feeding channel, improving the filling efficiency and feeding capacity, improving the defects of porosity and cracks easily formed at the riser of the hub, reducing the repair rate and rejection rate of the hub blank, curbing the increase in production cost; meanwhile, the structure of the spline-shaped groove forms a casting structure at the riser part of the hub during the cooling process, increasing the casting area and thickness at the riser of the hub, further improving the stress crack defect at the riser; the setting of the water cooling structure improves the cooling efficiency, can achieve the cooling effect of short-time strong cooling, and meets the cooling process requirements of the shunt cone body. Description of the Drawings

[0014] The following further describes the present utility model in detail with reference to the drawings and specific embodiments.

[0015] Figure 1 It is a three-dimensional structure diagram of the present utility model.

[0016] Figure 2 It is a cross-sectional structure diagram of the present utility model.

[0017] In the figure: 1 - shunt cone body; 2 - spline-shaped groove; 21 - groove opening; 3 - water cooling structure; 31 - water inlet pipe; 32 - cooling cavity; 33 - return water channel; 34 - water outlet hole; 35 - plug. Specific Embodiments

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0019] Such as Figure 1-2As shown in the figure, a spline-type flow-dividing cone with short-time strong cooling includes a flow-dividing cone body 1, and spline-shaped grooves 2 are formed on the conical surface of the flow-dividing cone body 1. During filling, the molten aluminum supplied by the riser pipe enters the mold cavity through the conical surface of the flow-dividing cone body 1. During the wheel casting process, the spline-shaped grooves 2 on the flow-dividing cone body 1 can serve as the runner for the molten aluminum to enter the mold cavity and the channel for molten aluminum feeding, thereby expanding the molten aluminum filling channel and feeding channel, improving the filling efficiency and feeding capacity, and further improving the defects such as thinness at the hub riser, easy formation of pores and cracks, reducing the repair rate and scrap rate of the hub blank. At the same time, the structure of the spline-shaped grooves 2 forms the casting structure at the hub riser part during the cooling process, increasing the casting area and thickness at the hub riser part, and improving the stress crack defects at the riser part.

[0020] Preferably, the profile of the spline-shaped groove 2 is a smoothly transitioning curve shape, which can play a stable guiding role for the filling molten aluminum, making the molten aluminum flow more smoothly, reducing the impact of the molten aluminum on the spline-shaped groove 2, ensuring the stability of the molten aluminum flow while improving the filling efficiency of the molten aluminum, and alleviating problems such as molten aluminum turbulence and splashing.

[0021] Preferably, the notch 21 of the spline-shaped groove 2 is arranged corresponding to the spoke part of the hub blank to widen the feeding channel of the spoke part and reduce defects such as misruns and pores in the thicker-cast spoke part of the hub. During casting, a part of the molten aluminum enters the spoke part of the hub through the notch 21 of the spline-shaped groove 2 to complete the efficient filling of the spoke part; when the mold is insulated and cooled, the notch 21 of the spline-shaped groove 2 will serve as the channel for molten aluminum feeding, ensuring the smoothness of the feeding channel, improving the feeding capacity of the spoke part of the hub blank, and ensuring the casting quality.

[0022] In a further embodiment, a water-cooling structure 3 is arranged inside the flow-dividing cone body 1 for cooling and temperature reduction of the flow-dividing cone body 1. The water-cooling structure 3 includes a water inlet pipe 31 that can be connected to a cooling water source. A cooling cavity 32 is formed in the flow-dividing cone body 1 corresponding to the water inlet pipe 31. The water inlet pipe 31 is inserted into the cooling cavity 32, and the gap between the water inlet pipe 31 and the inner wall of the cooling cavity 32 serves as the return water channel 33 for the cooling water. During cooling, the cooling water is supplied into the cooling cavity 32 by the water inlet pipe 31. After heat exchange in the cooling cavity 32, it flows out of the cooling cavity 32 through the return water channel 33 to complete the cooling and temperature reduction of the flow-dividing cone body 1.

[0023] As a preferred embodiment, water outlet holes 34 are formed on the side wall of the water inlet pipe 31, and the water outlet holes 34 are arranged corresponding to the middle part of the flow-dividing cone body 1 to increase the cooling intensity of the middle part of the flow-dividing cone body 1 and improve the overall cooling efficiency of the flow-dividing cone body 1. During cooling, the cooling water is sprayed horizontally on the inner wall of the flow-dividing cone body 1 through the water outlet holes 34 to form efficient cooling of the side wall of the flow-dividing cone body 1.

[0024] Preferably, a plurality of the water outlet holes 34 are circumferentially and uniformly distributed along the water inlet pipe 31 to improve the uniformity of cooling the inner wall of the flow dividing cone body 1. Further, a plug 35 is provided at the bottom of the water inlet pipe 31 for blocking the water inlet pipe 31. All the cooling water entering the water inlet pipe 31 is concentratedly sprayed onto the inner wall of the flow dividing cone body 1 through the water outlet holes 34, so that short-time strong cooling can be formed on the flow dividing cone to meet the requirements of the cooling process.

[0025] The specific embodiments of the present invention disclosed above are only for illustration, but the present invention is not limited thereto. For those of ordinary skill in the art, any modifications made without departing from the principle of the present invention shall be considered as belonging to the protection scope of the present invention.

Claims

1. A spline-type splitter cone for short-time strong cooling, characterized in that: It comprises a flow dividing cone body (1), wherein a spline groove (2) is provided on the conical surface of the flow dividing cone body (1), and the spline groove (2) can be used as a pouring channel for aluminum liquid to be filled into a mold cavity and a channel for aluminum liquid to compensate for shrinkage.

2. A spline-type splitter cone for short-time strong cooling according to claim 1, characterized in that: The profile of the spline groove (2) is a smoothly transitioned curve shape, so as to play a stable guiding role for the aluminum liquid being filled into the mold.

3. A spline-type splitter cone for short-time strong cooling according to claim 1, characterized in that: The notch (21) of the spline groove (2) is arranged corresponding to the spoke portion of the hub blank to widen the shrinkage compensation channel of the spoke portion.

4. The spline-type splitter cone for short-time strong cooling according to claim 1, characterized in that: The diverter cone body (1) is provided with a water cooling structure (3) for cooling the diverter cone body (1), the water cooling structure (3) comprising a water inlet pipe (31) that can be connected to a cooling water source, a cooling cavity (32) is provided in the diverter cone body (1) corresponding to the water inlet pipe (31), the water inlet pipe (31) is inserted in the cooling cavity (32), and a gap between the water inlet pipe (31) and the inner wall of the cooling cavity (32) serves as a return channel (33) for cooling water.

5. A spline-type splitter cone for short-time strong cooling according to claim 4, characterized in that: A water outlet hole (34) is provided on the side wall of the water inlet pipe (31), and the water outlet hole (34) is arranged corresponding to the middle part of the diverter cone body (1) to increase the cooling intensity of the middle part of the diverter cone body (1).

6. A spline-type splitter cone for short-time strong cooling according to claim 5, characterized in that: A plurality of water outlet holes (34) are evenly distributed along the circumference of the water inlet pipe (31) to improve the uniformity of cooling the inner wall of the splitter cone body (1).

7. The spline-type splitter cone for short-time strong cooling according to claim 5, characterized in that: A plug (35) is provided at the bottom of the water inlet pipe (31) for sealing the water inlet pipe (31).

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