Water cooling structure for edge die and casting rotary die

Abstract

The utility model discloses a water cooling structure and cast spinning mould for side mould, including upper die, lower mould, side mould, and side mould includes side mould body, water cavity cover plate, water spray pipe, water cooling insert, the back of side mould body is provided with water cavity, and the lower portion of water cavity is provided with through groove, and the water spray pipe in water cavity is used to spray cooling water to water cavity and cool down, and the lower portion designs water cooling insert, is used for cooling the casting spoke hot section, can improve the solidification of wheel rim and can improve the solidification speed of spoke hot section, and the temperature of side mould is lower in this mould, and the temperature of upper die is higher, makes the aluminium temperature temperature drop speed slow down, avoids the casting defects such as cold separation and can effectively solve the inner wheel rim cold separation, the casting problem of product cracking after spinning, improves product pass rate, and reduces production cost.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, and in particular to a water-cooled structure for side molds and a casting mold. Background Technology

[0002] New energy vehicles require large-size aluminum alloy wheels due to their large curb weight and fast start-up speed. Therefore, the mechanical strength requirements for the wheels are high. The existing wheel production generally adopts the process of low-pressure casting to form wheel discs and rim blanks, and then spinning to form wheel rims.

[0003] At the end of the aluminum melt filling section is a thick part. The natural cooling rate of the casting in this area is slow and it is far from the gate, which is not conducive to the feeding of aluminum melt and the improvement of casting efficiency. Therefore, when designing the casting process, active cooling is usually applied at this position to accelerate the cooling rate, which is beneficial to solving internal defects in the casting and improving production efficiency. If strong cooling is applied to the upper mold, the mold temperature at this position will be too low. When the front end of the aluminum melt flow comes into contact with this position, the aluminum temperature drops rapidly. When multiple streams of aluminum melt converge, it is easy to cause casting defects such as cold shut. Utility Model Content This utility model aims to solve at least one of the technical problems existing in the prior art. To this end, a first aspect of this utility model proposes a water-cooling structure for a side mold, including a side mold body, a water cavity cover plate, a water spray pipe, and a water-cooling insert; a water cavity is provided on the back of the side mold body, and a through groove is opened below the water cavity, the through groove being independent of the water cavity; the water cavity cover plate is fixedly fitted onto the opening of the water cavity, and a water outlet pipe is installed on the water cavity cover plate; the water spray pipe is located inside the water cavity, and its rear end extends through the water cavity cover plate, the water spray pipe having spray holes for spraying cooling water into the water cavity; the water-cooling insert is installed in the through groove, and a water-cooling channel is provided inside the water-cooling insert.

[0004] According to some embodiments of this utility model, in order to ensure the sealing of the water cavity and prevent cooling water from flowing out from the gap between the water cavity cover plate and the side mold body, a sealing gasket is also installed to prevent cooling water leakage from affecting normal production activities.

[0005] According to some embodiments of this utility model, an mounting surface is provided around the opening of the water cavity, and a sealing gasket is located between the water cavity cover plate and the mounting surface.

[0006] According to some embodiments of this utility model, the mounting surface is a plane, and the contact between the water cavity cover and the sealing gasket is also a plane, so as to ensure that the water cavity cover can tightly press the sealing gasket against the mounting surface to ensure sealing.

[0007] According to some embodiments of this utility model, an annular groove is provided on the mounting surface. The annular groove surrounds the opening of the water cavity and accommodates a sealing gasket to ensure the accurate installation position of the sealing gasket and prevent the sealing gasket from shifting after the water cavity cover is installed, thereby affecting the sealing performance.

[0008] According to some embodiments of this utility model, the mounting surface is also provided with a plurality of threaded holes A, which surround the outer side of the annular groove; the water cavity cover is provided with a plurality of threaded through holes, and the threaded holes A and the threaded through holes are connected by fixing bolts to lock the water cavity cover.

[0009] According to some embodiments of this utility model, the water spray pipe includes an arc-shaped pipe and a water inlet pipe connected to the arc-shaped pipe. The end of the arc-shaped pipe is closed, and the distance D1 between the arc-shaped pipe and the water cavity is approximately 8-10 mm.

[0010] According to some embodiments of this utility model, multiple water spray holes are arranged on the arc-shaped tube, with the water spray holes facing the side mold body, so that the water jets sprayed from the water spray holes can be sprayed onto the cavity wall of the water cavity.

[0011] According to some embodiments of this utility model, the front surface of the arc-shaped pipe is provided with a blank area, and the rear surface of the arc-shaped pipe is provided with a water inlet. The water inlet is located behind the blank area and is welded to the water inlet pipe.

[0012] According to some embodiments of this utility model, the water inlet pipe passes through the water chamber cover plate, so that the rear section of the water inlet pipe extends outward to facilitate connection to external cooling water supply equipment.

[0013] According to some embodiments of this utility model, water outlet pipes are installed on both the left and right sides of the water inlet pipe. Cooling water enters the arc-shaped pipe through the water inlet pipe and is sprayed from the spray hole onto the wall of the water chamber. After flow heat exchange, it is discharged from the water outlet pipe.

[0014] According to some embodiments of this utility model, the water outlet pipe and the water cavity cover plate, and the water inlet pipe and the water cavity cover plate are connected by welding or threading.

[0015] According to some embodiments of the present invention, the water cooling channel includes an arc-shaped channel and a water inlet channel. The arc-shaped channel is connected to the water inlet channel, and the water inlet channel is provided with a water inlet that opens at the rear of the water cooling insert.

[0016] A second aspect of this utility model provides a casting mold, including an upper mold, a lower mold, and a side mold, wherein the side mold adopts the water-cooling structure described above for the side mold.

[0017] To complement the adjustment of the side mold cooling scheme, water cooling channels are also provided on the upper and lower mold bodies, thereby improving the overall casting efficiency.

[0018] This utility model has at least the following beneficial effects: 1. A water cavity is designed in the upper part of the side mold body. Cooling water is sprayed into the water cavity through a water spray pipe for cooling. A water-cooling insert is designed in the lower part to cool the hot joint of the casting wheel spoke. This can improve the solidification of both the wheel rim and the hot joint of the wheel spoke, which is conducive to improving the cooling speed of the thick parts of the casting and improving production efficiency.

[0019] 2. In this mold, the side mold temperature is lower and the upper mold temperature is higher. This slows down the rate at which the aluminum temperature drops when the front end of the molten aluminum comes into contact with the upper mold, thus avoiding casting defects such as cold shuts when multiple streams of molten aluminum converge. This effectively solves the casting problems of cold shuts on the inner rim and cracking of the product after spinning, improves the product qualification rate, and reduces production costs. 3. Since the blank area is directly opposite the water inlet pipe, the water flow towards the blank area is very large. If a water spray hole is opened here, it will cause the water flow in the blank area to be too large, while the flow of the water spray hole on both sides of the blank area will be too small. This will cause a difference in the flow of cooling water, so that the cooling effect of the water cavity wall area opposite the blank area is higher than that of other areas, resulting in uneven cooling of the water cavity wall and thus affecting the cooling effect. Therefore, no water spray hole is opened in the blank area, but multiple water spray holes are arranged on the left and right sides of the blank area.

[0020] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0021] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is an exploded view of the side mold according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the side mold in use according to an embodiment of the present utility model; Figure 3 This is a schematic diagram of the side mold body according to an embodiment of the present utility model; Figure 4 This is a schematic diagram of the water cavity cover, spray pipe, and outlet pipe assembly according to an embodiment of the present utility model; Figure 5 This is a schematic diagram of the water spray pipe according to an embodiment of the present utility model; Figure 6 This is a side view of the water-cooled insert according to an embodiment of the present invention; Figure 7 for Figure 6 Schematic diagram of the AA section; Figure 8 This is a schematic cross-sectional view of the casting mold according to an embodiment of the present utility model; Detailed Implementation The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0022] In the description of this utility model, "more than" means two or more, and "greater than," "less than," "exceeding," etc., are understood to exclude the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly specifying the number of indicated technical features or their sequential relationship.

[0023] At the end of the aluminum melt filling section is a thick part. The natural cooling rate of the casting in this area is slow and it is far from the gate, which is not conducive to the feeding of aluminum melt and the improvement of casting efficiency. Therefore, when designing the casting process, active cooling is usually applied at this position to accelerate the cooling rate, which is beneficial to solving internal defects in the casting and improving production efficiency. If strong cooling is applied to the upper mold 100, the mold temperature at this position will be too low. When the front end of the aluminum melt flow comes into contact with this position, the aluminum temperature drops rapidly. When multiple streams of aluminum melt converge, it is easy to cause casting defects such as cold shut.

[0024] Reference Figure 1 , 2 As shown, the water-cooling structure for the side mold includes a side mold body, a water cavity cover plate 400, a water spray pipe 500, a water outlet pipe 600, and a water-cooling insert 700. A water cavity 310 is provided on the back of the side mold body, and a through groove 320 is provided below the water cavity 310. The through groove 320 is independent of the water cavity 310. The water cavity cover plate 400 is fixedly installed over the opening of the water cavity 310, and the water outlet pipe 600 is installed on the water cavity cover plate 400. The water spray pipe 500 is located inside the water cavity 310, and the rear end of the water spray pipe 500 extends out of the water cavity cover plate 400. The water spray pipe 500 is provided with a water spray hole 501, which is used to spray cooling water into the water cavity 310. The water-cooling insert 700 is installed in the through groove 320, and a water-cooling channel 710 is provided inside the water-cooling insert 700.

[0025] A water cavity 310 is designed in the upper part of the side mold body. Cooling water is sprayed into the water cavity 310 by a water spray pipe 500 for cooling. A water-cooling insert 700 is designed in the lower part to cool the hot joint of the casting wheel spoke. This can improve the solidification of the wheel rim and the solidification speed of the hot joint of the wheel spoke, which is conducive to improving the cooling speed of the thick parts of the casting and improving production efficiency.

[0026] Reference Figure 1 , 3As shown, in order to ensure the sealing of the water cavity 310 and prevent cooling water from flowing out from the gap between the water cavity cover plate 400 and the side mold body, a sealing gasket 800 is also installed to prevent cooling water leakage from affecting normal production activities.

[0027] Specifically, an mounting surface 330 is provided around the opening of the water cavity 310, and a sealing gasket 800 is located between the water cavity cover plate 400 and the mounting surface 330.

[0028] In this embodiment, the mounting surface 330 is a plane, and the contact between the water cavity cover plate 400 and the sealing gasket 800 is also a plane, so as to ensure that the water cavity cover plate 400 can tightly press the sealing gasket 800 against the mounting surface 330 to ensure sealing.

[0029] Reference Figure 3 As shown, an annular groove 331 is provided on the mounting surface 330. The annular groove 331 surrounds the opening of the water cavity 310. The annular groove 331 accommodates the sealing gasket 800 to ensure the accurate installation position of the sealing gasket 800 and to prevent the sealing gasket 800 from shifting after the water cavity cover plate 400 is installed, thereby affecting the sealing performance.

[0030] Reference Figure 3-4 As shown, the mounting surface 330 is also provided with a plurality of threaded holes A332, which surround the outer side of the annular groove 331; the water cavity cover plate 400 is provided with a plurality of threaded through holes 410, the distance between the threaded holes A332 and the threaded through holes 410 is designed to be 80-120mm, and the threaded holes A332 and the threaded through holes 410 are connected by fixing bolts to lock the water cavity cover plate 400.

[0031] Reference Figure 5 As shown, the water spray pipe 500 includes an arc-shaped pipe 510 and a water inlet pipe 520 connected to the arc-shaped pipe 510. The end of the arc-shaped pipe 510 is closed, and the distance D1 between the arc-shaped pipe 510 and the water chamber 310 is approximately 8-10 mm.

[0032] Multiple water jet holes 501 are arranged on the arc-shaped tube 510, with the water jet holes 501 facing the wall of the water cavity. The diameter D2 of the water jet holes 501 is between 1.5mm and 2.5mm, so that the water jet from the water jet holes 501 can be sprayed toward the wall of the water cavity 310.

[0033] The spacing between the water spray holes 501 is between 20 and 30 mm, which makes the water spray evenly distributed in the water cavity 310 and improves the uniformity of water cooling of the cavity wall of the water cavity 310.

[0034] The front surface of the arc-shaped pipe 510 is provided with a blank area 511, and the rear surface of the arc-shaped pipe 510 is provided with a water inlet 512. The water inlet 512 is located behind the blank area 511, and the water inlet 512 is welded to the water inlet pipe 520.

[0035] Since the blank area 511 is directly opposite the water inlet pipe 520, the water flow rate rushing towards the blank area 511 is very large. If a water spray hole 501 is opened here, it will cause the water flow rate of the blank area 511 to be too large, while the flow rate of the water spray holes 501 on both sides of the blank area 511 will be too small, resulting in a difference in the flow rate of cooling water. As a result, the cooling effect of the cavity wall area of ​​the water cavity 310 opposite to the blank area 511 is higher than that of other areas, resulting in uneven cooling of the cavity wall of the water cavity 310, thus affecting the cooling effect. Therefore, no water spray hole 501 is opened in the blank area 511, but multiple water spray holes 501 are arranged on the left and right sides of the blank area 511.

[0036] Reference Figure 3 , 4 As shown, the water inlet pipe 520 passes through the water chamber cover plate 400, so that the rear section of the water inlet pipe 520 extends outward to facilitate connection to external cooling water supply equipment.

[0037] Meanwhile, water outlet pipes 600 are installed on both sides of the water inlet pipe 520. In this embodiment, the inlet of the water inlet pipe 520 extends into the water cavity 310 by a distance D3 of about 10 mm. Cooling water enters the arc-shaped pipe 510 through the water inlet pipe 520 and is sprayed from the spray hole 501 onto the cavity wall of the water cavity 310. After heat exchange, it is discharged from the water outlet pipe 600.

[0038] In this embodiment, the thickness of the locking water chamber cover plate 400 is about 20-25mm, and the water outlet pipe 600 and the water chamber cover plate 400, and the water inlet pipe 520 and the water chamber cover plate 400 are connected by welding or thread.

[0039] Reference Figure 6 , 7 As shown, the water-cooling channel 710 includes an arc-shaped channel 711, a water inlet channel 712, and a water outlet channel 713. The arc-shaped channel 711 is connected to the water inlet channel 712 and the water outlet channel 713. Both the water inlet channel 712 and the water outlet channel 713 open at the rear of the water-cooling insert (700).

[0040] Reference Figure 8 As shown, the casting mold includes an upper mold 100, a lower mold 200, and a side mold 300. The side mold 300 adopts the water-cooling structure described above for side molds.

[0041] In this mold, the side mold 300 has a lower temperature and the upper mold 100 has a higher temperature. This slows down the temperature drop of the aluminum when the front end of the molten aluminum comes into contact with the upper mold 100, thus avoiding casting defects such as cold shut when multiple streams of molten aluminum converge. This effectively solves the casting problems of cold shut on the inner rim and cracking of the product after spinning, improves the product qualification rate, and reduces production costs. In order to coordinate with the adjustment of the cooling scheme of the side mold 300, the upper mold 100 and the lower mold 200 are also provided with water cooling channels 101 on the mold body. The water cooling channels 101 are used to introduce cooling water to cool the upper mold 100 and the lower mold 200, thereby improving the overall casting efficiency.

[0042] In the description of this specification, references to terms such as "some embodiments" or "as one might imagine" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above 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 embodiment or example.

[0043] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A water-cooling structure for edge molds, characterized in that, include: The side mold body has a water cavity (310) on its back and a through groove (320) below the water cavity (310). The through groove (320) is independent of the water cavity (310). A water cavity cover plate (400) is fixedly installed over the opening of the water cavity (310), and a water outlet pipe (600) is installed on the water cavity cover plate (400). A water spray pipe (500) is located inside the water chamber (310). The rear end of the water spray pipe (500) extends out through the water chamber cover plate (400). The water spray pipe (500) is provided with a water spray hole (501), which is used to spray cooling water into the water chamber (310). A water-cooled insert (700) is installed in the through groove (320), and a water-cooled channel (710) is provided in the water-cooled insert (700).

2. The water-cooling structure for the side mold according to claim 1, characterized in that, It also includes a sealing gasket (800), and an mounting surface (330) is provided around the opening of the water cavity (310). The sealing gasket (800) is sandwiched between the water cavity cover plate (400) and the mounting surface (330).

3. The water-cooling structure for the side mold according to claim 2, characterized in that, The mounting surface (330) is provided with an annular groove (331), which surrounds the opening of the water cavity (310) and contains the sealing gasket (800).

4. The water-cooling structure for the side mold according to claim 3, characterized in that, The mounting surface (330) is also provided with a plurality of threaded holes A (332), which surround the outer side of the annular groove (331); the water cavity cover plate (400) is provided with a plurality of threaded through holes (410), and the threaded holes A (332) and the threaded through holes (410) are connected by fixing bolts.

5. The water-cooling structure for the side mold according to claim 1, characterized in that, The water spray pipe (500) includes an arc-shaped pipe (510) and an inlet pipe (520) connected to the arc-shaped pipe (510). The ends of the arc-shaped pipe (510) are closed. Multiple water spray holes (501) are arranged on the arc-shaped pipe (510), and the water spray holes (501) face the wall of the water cavity (310). The inlet pipe (520) passes through the water chamber cover plate (400), so that the rear section of the inlet pipe (520) extends outward, and the outlet pipe (600) is installed on the left and right sides of the inlet pipe (520).

6. The water-cooling structure for the side mold according to claim 5, characterized in that, The front surface of the arc-shaped pipe (510) is provided with a blank area (511), and multiple water spray holes (501) are arranged on the left and right sides of the blank area (511). The rear surface of the arc-shaped pipe (510) is provided with a water inlet (512), which is located behind the blank area (511), and the water inlet pipe (520) is welded to the water inlet (512).

7. The water-cooling structure for the side mold according to claim 5, characterized in that, The water outlet pipe (600) and the water cavity cover plate (400), and the water inlet pipe (520) and the water cavity cover plate (400) are connected by welding or thread.

8. The water-cooling structure for the side mold according to claim 1, characterized in that, The water-cooling channel (710) includes an arc-shaped channel (711), a water inlet channel (712), and a water outlet channel (713). The arc-shaped channel (711) is connected to the water inlet channel (712) and the water outlet channel (713). Both the water inlet channel (712) and the water outlet channel (713) open at the rear of the water-cooling insert (700).

9. A casting mold, characterized in that, It includes an upper mold (100), a lower mold (200), and a side mold (300), wherein the side mold (300) adopts the water-cooling structure for the side mold as described in any one of claims 1 to 8.

10. The casting mold according to claim 9, characterized in that, The upper mold (100) and the lower mold (200) are provided with water cooling channels (101).

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