Automobile engine shell casting mold and casting method thereof

Abstract

The invention relates to the technical field of metal casting, in particular to an automobile engine shell casting mold and a casting method.The automobile engine shell casting mold comprises a lower mold body, a rotary column, a partition plate and a sleeve, a cooling cavity is formed in the lower mold body, and the cooling cavity is filled with cooling liquid; the rotating column is rotationally arranged on the lower die around the axis of the rotating column, one end of the rotating column extends into the cooling cavity, two through holes used for promoting circulation of cooling liquid in the cooling cavity are formed in the end, located in the cooling cavity, of the rotating column, and the partition plate is arranged on the rotating column, located between the two through holes, spirally arranged and extends in the axial direction of the rotating column; the sleeve is arranged in the cooling cavity, one end of the sleeve is connected outside the rotating column in a sleeving mode, the sleeve is coaxial with the rotating column and can rotate relative to the rotating column, and the sleeve makes contact with the partition plate. And the rotating column is rotationally arranged, and cooling liquid flowing into the cooling cavity can enable the partition plate to rotate under impact force, so that the peripheral surface of the sleeve is scraped, and the situation that impurities adhere to the inner wall of the sleeve to affect the cooling effect of the workpiece is avoided.

Description

Technical Field

[0001] This invention relates to the field of metal casting technology, and in particular to a casting mold for an automobile engine housing and its casting method. Background Technology

[0002] In the automotive manufacturing industry, the engine casing, as a core load-bearing component, directly affects the engine's operational stability and service life due to its casting quality. Because of the complex structure of the engine casing, which often includes multiple deep holes, partitioned cooling channels have become the mainstream cooling structure for deep-hole casting molds to ensure uniform and controllable mold temperature during the casting process and reduce defects such as shrinkage cavities and cracks in the casting. By dividing the channels into multiple sets of flow paths using partitions, the heat exchange efficiency between the cooling water and the inner wall of the mold is improved, ensuring rapid and uniform cooling of the casting and guaranteeing molding accuracy.

[0003] However, existing partitioned cooling water channels have a key technical defect in long-term use: during the circulation of cooling water, minerals such as calcium and magnesium ions in the water are prone to precipitate on the inner wall of the water channel and the surface of the partitions, forming scale deposits. As the operating time increases, the scale will gradually accumulate and thicken, which will not only reduce the cross-sectional area of ​​the water channel and increase the water flow resistance, but also reduce the cooling water flow rate and significantly worsen the cooling effect of the mold, thus affecting the uniformity of casting cooling and causing product quality fluctuations; more seriously, scale blockage can cause local water channel interruption, causing the temperature of the corresponding area of ​​the mold to be too high, aggravating the thermal fatigue damage of the mold, shortening the overall service life of the mold, and increasing production and maintenance costs and downtime losses. Summary of the Invention

[0004] Therefore, it is necessary to provide a casting mold for automobile engine housing and its casting method to address the current problem of easy blockage inside the cooling water channel.

[0005] The above objectives are achieved through the following technical solutions: A casting mold for an automobile engine housing includes an upper mold, a lower mold, and a cooling mechanism. The upper and lower molds are arranged along a first direction and can slide and abut against each other along the first direction. A forming cavity is provided between the upper and lower molds. A cooling cavity is provided in the lower mold and is filled with coolant for cooling the forming cavity. The cooling mechanism includes a rotating column, a partition plate, and a sleeve. The rotating column is rotatably mounted on the lower mold around its own axis, with one end extending into the cooling cavity and its axis extending along the first direction. The end of the rotating column located in the cooling cavity has two through holes for promoting the circulation of coolant in the cooling cavity. The partition plate is disposed on the rotating column and located between the two through holes. The partition plate is spirally arranged and extends along the axial direction of the rotating column. The sleeve is disposed in the cooling cavity and one end is sleeved on the outside of the rotating column. The sleeve is coaxial with the rotating column and can rotate relative to the rotating column. The sleeve contacts the partition plate.

[0006] Preferably, the sleeve can slide axially relative to the rotating column and there is a gap between the end of the sleeve away from the rotating column and the lower mold. The outer peripheral surface of the sleeve is provided with an outer conical surface. The sleeve can abut against the lower mold through the outer conical surface. The large end of the outer conical surface is closer to the rotating column than its small end. The lower mold is provided with a drain channel. After the drain channel is separated from the lower mold by the outer conical surface, it can communicate with the cooling cavity.

[0007] Preferably, the rotating column is provided with two annular grooves, which are arranged along the axial direction of the rotating column and are respectively connected to a through hole. The lower mold is provided with two flow channels, each of which is connected to an annular groove.

[0008] Preferably, the inner circumferential surface of the sleeve is provided with an inner conical surface, the larger end of the inner conical surface is closer to the rotating column than its smaller end, the side of the partition plate is in contact with the inner conical surface of the sleeve and there is friction between them, and the friction decreases as the sleeve approaches the rotating column.

[0009] Preferably, a scraper is provided on the side of the partition closest to the sleeve, and the partition can contact the sleeve through the scraper, which has a certain degree of flexibility.

[0010] Preferably, a spring is provided inside the lower mold, with both ends of the spring connected to the sleeve and the lower mold, for controlling the reset of the sleeve.

[0011] Preferably, the lower mold includes a first mold and a second mold. The first mold can abut against the upper mold, and the second mold is located on the side of the first mold away from the upper mold. The first mold and the second mold are connected by bolts.

[0012] Preferably, the drain channel is located between the first mold and the second mold.

[0013] Preferably, the automobile engine housing casting mold further includes a first mounting base, a second mounting base, and an ejection mechanism. The upper mold is mounted on the first mounting base, the lower mold is mounted on the second mounting base, and the ejection mechanism is mounted on the second mounting base for ejecting the workpiece from the forming cavity.

[0014] This invention also provides a method for casting an automobile engine housing, utilizing the aforementioned automobile engine housing casting mold, comprising the following steps: S1, inject molten metal into the forming cavity, and apply pressure to the upper and lower molds to form the material.

[0015] S2, coolant is injected into the cooling chamber through one of the through holes and then discharged from the other through hole, so that the coolant in the cooling chamber circulates.

[0016] S3, when cleaning the cooling chamber, coolant is injected into the cooling chamber through the through hole to increase the internal pressure of the cooling chamber. Under the action of pressure, the sleeve approaches the rotating column and connects the drain channel with the cooling chamber, and the coolant in the cooling chamber is discharged.

[0017] The beneficial effects of this invention are as follows: The spiral arrangement of the baffles allows the coolant to enter the cooling chamber through one through-hole, flow within the spiral channel between the sleeve and the baffle, and exit through the other through-hole. This extends the flow path of the coolant within the cooling chamber and reduces the dead zone, thus improving the cooling effect. The rotating column design allows the coolant flowing into the cooling chamber to cause the baffles to rotate due to impact, thereby scraping the circumferential surface of the sleeve and preventing impurities adhering to the inner wall of the sleeve from affecting the cooling effect on the workpiece. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a casting mold for an automobile engine housing provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the mating structure of the upper and lower molds of an automobile engine housing casting mold provided in an embodiment of the present invention; Figure 3 for Figure 2 Top view; Figure 4 for Figure 3 Sectional view along the middle AA direction; Figure 5 for Figure 4 Enlarged view of point B in the middle; Figure 6 for Figure 5 Enlarged view of point C in the middle; Figure 7 This is a schematic diagram of the structure of a partition plate in a casting mold for an automobile engine housing, provided as an embodiment of the present invention.

[0019] in: 100. Upper mold; 101. First mold; 102. Second mold; 103. Cooling chamber; 104. Rotating column; 105. Partition plate; 106. Sleeve; 107. Through hole; 108. Drainage channel; 109. Annular groove; 110. Flow channel; 111. Scraper; 112. Spring; 113. Mounting groove; 114. First mounting seat; 115. Second mounting seat; 116. Ejection mechanism; 117. Sprue. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0021] The component designations used in this document, such as "first" and "second," are merely for distinguishing the described objects and do not have any sequential or technical meaning. The terms "connection" and "linkage" used in this invention, unless otherwise specified, include both direct and indirect connections (linkages). It should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention.

[0022] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0023] like Figures 1 to 7 As shown, this embodiment of the invention provides a casting mold for an automobile engine housing, including an upper mold 100, a lower mold, and a cooling mechanism. The upper mold 100 and the lower mold are arranged along a first direction and can slide and abut against each other along the first direction. A forming cavity is provided between the upper mold 100 and the lower mold. A cooling cavity 103 is provided in the lower mold. The cooling cavity 103 is filled with coolant and used to cool the forming cavity. The cooling mechanism includes a rotating column 104, a partition plate 105, and a sleeve 106. The rotating column 104 is rotatably mounted on the lower mold around its own axis, and one end of it extends into the cooling cavity 105. The rotating column 104 is located inside the cooling chamber 103 and its axis extends along the first direction. One end of the rotating column 104 is provided with two through holes 107 for promoting the circulation of coolant in the cooling chamber 103. The partition 105 is disposed on the rotating column 104 and located between the two through holes 107. The partition 105 is spirally disposed and extends along the axial direction of the rotating column 104. The sleeve 106 is disposed inside the cooling chamber 103 and one end of it is sleeved on the outside of the rotating column 104. The sleeve 106 is coaxial with the rotating column 104 and can rotate relative to the rotating column 104. The sleeve 106 is in contact with the partition 105.

[0024] The baffle 105 is spirally arranged, allowing the coolant to enter the cooling chamber 103 through one through hole 107. The coolant then flows within the spiral channel between the sleeve 106 and the baffle 105, and exits through the other through hole 107. This extends the flow path of the coolant within the cooling chamber 103 and reduces the dead zone, thus improving cooling efficiency. The rotating column 104 is rotatable, allowing the coolant flowing into the cooling chamber 103 to cause the baffle 105 to rotate due to impact. This scrapes the circumference of the sleeve 106, preventing impurities adhering to the inner wall of the sleeve 106 from affecting the cooling effect on the workpiece.

[0025] In this embodiment, the sleeve 106 can slide axially relative to the rotating column 104 and there is a gap between the end of the sleeve 106 away from the rotating column 104 and the lower mold. The outer peripheral surface of the sleeve 106 is provided with an outer conical surface. The sleeve 106 can abut against the lower mold through the outer conical surface. The large end of the outer conical surface is closer to the rotating column 104 than its small end. The lower mold is provided with a drain channel 108. After the drain channel 108 is separated from the lower mold by the outer conical surface, it can communicate with the cooling cavity 103.

[0026] During the cooling process, one through-hole 107 fills the cooling chamber 103 with liquid, while the liquid in the cooling chamber 103 drains out through the other through-hole 107. When cleaning the inner conical surface of the sleeve 106 is required, coolant is simultaneously introduced into the cooling chamber 103 through both through-holes 107, increasing the internal pressure of the cooling chamber 103 and causing the sleeve 106 to slide. The coolant in the cooling chamber 103 flows towards the drain channel 108. The diameter of the drain channel 108 is larger than the diameter of the through-hole 107, making it less prone to clogging by impurities. The simultaneous filling of the cooling chamber 103 with liquid through both through-holes 107 causes the baffle 105 to rotate faster, improving its cleaning effect on impurities.

[0027] In this embodiment, the rotating column 104 is provided with two annular grooves 109, which are arranged along the axial direction of the rotating column 104 and are respectively connected to a through hole 107. The lower mold is provided with two flow channels 110, each of which is connected to an annular groove 109.

[0028] Specifically, the two flow channels 110 are respectively connected to the external cooling tank. The cooling tank can simultaneously fill the two flow channels 110 with coolant, and can also fill the cooling chamber 103 with coolant through one flow channel 110 and collect the coolant in the other flow channel 110. After the annular groove 109 is set, the cooling chamber 103 can still be filled with coolant through the corresponding flow channel 110 when the rotating column 104 rotates.

[0029] In this embodiment, the inner circumferential surface of the sleeve 106 is provided with an inner conical surface. The larger end of the inner conical surface is closer to the rotating column 104 than its smaller end. The side of the partition 105 is in contact with the inner conical surface of the sleeve 106 and there is friction between them. The friction decreases as the sleeve 106 approaches the rotating column 104.

[0030] Specifically, during normal operation of the cooling chamber 103, the internal pressure prevents the sleeve 106 from approaching the rotating column 104. The sleeve 106 and the baffle 105 have significant friction, preventing the baffle 105 from easily rotating after being impacted by the liquid flow. This avoids prolonged friction and wear between the baffle 105 and the sleeve 106, which would affect the subsequent cleaning of impurities on the inner wall of the sleeve 106 by the baffle 105, thus extending the service life of both the baffle 105 and the sleeve 106. When cleaning is required after a period of use, the internal pressure of the cooling chamber 103 is increased, connecting the drain channel 108 to the cooling chamber 103. Simultaneously, the friction between the baffle 105 and the sleeve 106 is reduced, allowing the sleeve 106 to rotate relative to the baffle 106 under the impact of the coolant without separating from the baffle 105. The baffle 105 then scrapes away impurities adhering to the conical surface inside the sleeve 106.

[0031] In this embodiment, a scraper 111 is provided on one side of the partition 105 near the sleeve 106. The partition 105 can contact the sleeve 106 through the scraper 111, and the scraper 111 has a certain degree of flexibility.

[0032] Specifically, a flexible scraper 111 is provided. The scraper 111 can ensure the sealing of the spiral channel between the sleeve 106 and the partition 105, and at the same time, it can ensure that the rotation of the partition 105 can clean the inner conical surface of the sleeve 106.

[0033] In this embodiment, a spring 112 is provided inside the lower mold. The two ends of the spring 112 are connected to the sleeve 106 and the lower mold, and are used to control the reset of the sleeve 106.

[0034] The lower mold has a mounting groove 113 located below the sleeve 106. A spring 112 is sleeved on the rotating column 104 and located within the mounting groove 113. Under normal conditions, the spring 112 is compressed, consistently providing a force that keeps the sleeve 106 in contact with the lower mold. When the pressure inside the cooling chamber 103 increases to a certain value, it overcomes the elastic force of the spring 112, causing the sleeve 106 to separate from the lower mold.

[0035] In this embodiment, the lower mold includes a first mold 101 and a second mold 102. The first mold 101 can abut against the upper mold 100. The molding cavity is located between the upper mold 100 and the first mold 101. The cooling cavity 103 is located on the first mold 101. The second mold 102 is located on the side of the first mold 101 away from the upper mold 100. The first mold 101 and the second mold 102 are connected by bolts. The mounting groove 113 is located on the second mold 102. The split design of the lower mold facilitates the maintenance of the internal mechanism.

[0036] Specifically, the second mold 102 is provided with a receiving groove, the rotating column 104 is rotatably disposed in the receiving groove, two annular grooves 109 are also located in the receiving groove, and two flow channels 110 are opened on the second mold 102 and are connected to the receiving groove and connected to the corresponding annular grooves 109 through the receiving groove.

[0037] In this embodiment, the drain channel 108 is located between the first mold 101 and the second mold 102 for easy processing.

[0038] In this embodiment, the automobile engine housing casting mold further includes a first mounting base 114, a second mounting base 115, and an ejection mechanism 116. An upper mold 100 is mounted on the first mounting base 114 and has a pouring gate 117 for filling the molding cavity with liquid metal. A lower mold is mounted on the second mounting base 115, and the ejection mechanism 116 is mounted on the second mounting base 115 for ejecting the workpiece from the molding cavity. The working principles of the first mounting base 114, the second mounting base 115, and the ejection mechanism 116, as well as the specific steps of workpiece molding, are existing technologies and will not be described in detail here.

[0039] The working principle of the automobile engine housing casting mold provided in the above embodiment is as follows: First, the upper mold 100 and the first mold 101 are closed by the first mounting base 114 and the second mounting base 115. Then, liquid metal is filled into the molding cavity through the sprue 117. Then, pressure is applied to better shape the workpiece.

[0040] If cooling is required during the casting process, coolant is injected into one of the flow channels 110 through the cooling box. The coolant enters the corresponding annular groove 109 through the flow channel 110 and enters the cooling chamber 103 through the corresponding through hole 107. The coolant in the cooling chamber 103 begins to flow spirally under the guidance of the spiral baffle 105. After passing through one spiral channel, the coolant flows into another spiral channel, and then exits through another through hole 107 into the corresponding annular groove 109. Finally, it flows back into the cooling box from the corresponding flow channel 110.

[0041] After a period of use, impurities formed by coolant will adhere to the inner conical surface of the sleeve 106, affecting the heat exchange efficiency. At this time, coolant can be simultaneously introduced into the two flow channels 110 through the cooling box. The coolant in the two flow channels 110 enters the cooling chamber 103 at the same time, increasing the pressure in the cooling chamber 103. The coolant applies pressure through the end face of the sleeve 106, compressing the spring 112 and moving closer to the second mold 102. A gap is created between the outer conical surface of the sleeve 106 and the first mold 101. The drain channel 108 is connected to the cooling chamber 103, and the coolant in the cooling box flows into the drain channel 108. At the same time, the distance between the inner conical surface of the sleeve 106 and the baffle 105 increases, the pressure on the scraper 111 decreases, that is, the friction between the scraper 111 and the inner conical surface decreases. The coolant flowing from the through hole 107 into the cooling chamber 103 impacts the baffle 105, causing the baffle 105 to generate a rotational force. The rotating baffle 105 drives the scraper 111 and the rotating column 104 to rotate relative to the sleeve 106. The scraper 111 cleans the impurities attached to the inner conical surface. The impurities floating in the coolant enter the drain channel 108 with the flow of the coolant and are discharged from the drain channel 108.

[0042] This invention also provides a method for casting an automobile engine housing, utilizing the aforementioned automobile engine housing casting mold, comprising the following steps: S1, inject molten metal into the forming cavity, and apply pressure to the upper mold 100 and the lower mold to form the material.

[0043] S2, when it is necessary to cool down the workpiece in the forming cavity, the cooling box is started to fill the coolant into one of the flow channels 110. The coolant is filled into the cooling cavity 103 through one of the corresponding through holes 107. The coolant entering the cooling cavity 103 flows spirally under the guidance of the partition plate 105, and then is discharged from the other through hole 107, so that the coolant in the cooling cavity 103 circulates.

[0044] S3, when cleaning the cooling chamber 103, coolant is simultaneously injected into the two flow channels 110 through the cooling box. After the coolant is injected into the cooling chamber 103 through the two through holes 107, the internal pressure of the cooling chamber 103 increases. The coolant applies pressure to the sleeve 106 through the end face of the sleeve 106. Under the action of pressure, the sleeve 106 approaches the rotating column 104 and connects the drain channel 108 with the cooling chamber 103, and the coolant in the cooling chamber 103 is discharged. At the same time, the friction between the sleeve 106 and the scraper 111 decreases. The baffle 105 rotates under the action of the flowing coolant and drives the scraper 111 to scrape off the impurities on the conical surface inside the sleeve 106. The scraped impurities are discharged from the drain channel 108 under the impact of the coolant.

[0045] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0046] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. An automobile engine housing casting mold characterized by comprising: The application relates to a cooling mechanism for a die-casting machine. The cooling mechanism comprises a rotating column, a partition plate and a sleeve, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column is arranged on the lower die and extends along the first direction, the rotating column 2. The casting mold for an automobile engine housing according to claim 1, wherein ​ 3. The mold for casting an engine block of an automobile as set forth in claim 1, wherein ​ 4. The casting mold for an automobile engine housing according to claim 1, wherein ​ 5. The casting mold for an automobile engine housing according to claim 1, wherein ​ 6. The casting mold for an automobile engine housing according to claim 1, wherein ​ 7. The mold for casting an engine housing of an automobile according to claim 1, wherein ​ 8. The mold for casting an engine block of an automobile as defined in claim 7, wherein ​ 9. The mold for casting an engine housing of an automobile according to claim 1, wherein ​ 10. A casting method of an automobile engine housing using the automobile engine housing casting mold according to any one of claims 1 to 9, characterized by, ​ ​ ​ ​

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