An automotive crankcase casting system

Abstract

This invention relates to the field of sand casting technology, specifically to an automotive crankshaft box casting system. The system includes a furnace, a casting machine, and a transport module. The transport module transports molten iron from the furnace to the casting machine. Several molds are arranged below the casting machine. The automotive crankshaft box casting system operates according to the following steps: the casting machine sequentially pours iron into all molds and records the start time of each mold; based on the start times of all molds and the preset pouring speed of the casting machine, the estimated end time of the corresponding mold is calculated; the estimated end times of all molds are sorted in ascending order; and the receiving and transport operations are performed in advance according to the estimated end times of the corresponding molds, thereby reducing waiting time and improving production efficiency.

Description

Technical Field

[0001] This invention relates to the field of sand casting technology, and in particular to an automotive crankcase gating system. Background Technology

[0002] The part of the engine cylinder block used to mount the crankshaft is called the crankcase. The crankcase is divided into the upper crankcase and the lower crankcase. The upper crankcase is cast as one piece with the cylinder block, while the lower crankcase is used to store lubricating oil and seal the upper crankcase.

[0003] The crankcase of an automobile engine has a complex structure, thin walls, and high strength requirements, making it difficult to cast. Based on the analysis of imported casting production lines and the survey of the current domestic production status, the commonly used casting process is as follows: horizontal parting from the cylinder centerline, horizontal pouring, shaping with ordinary clay sand and core making with resin sand; core setting with fixtures, box assembly; molten iron, and pouring of the mold.

[0004] In the casting technology of crankcase, in order to improve the casting efficiency of crankcase, the automatic transportation of molten iron ladles is often completed by the cooperation of rails and transport trolleys. For example, Chinese utility model patent with announcement number CN217647480U discloses an H-type automatic molten iron transfer system. This H-type automatic molten iron transfer system places multiple sets of molten iron ladles on the production line, so that the transport vehicle can continuously transport the molten iron ladles to the casting machine, thereby reducing the idle time of the transport vehicle to a certain extent.

[0005] However, in the actual operation of the above-mentioned H-type molten iron automatic transfer system, manual judgment and operation of the transport vehicle are required, resulting in a lot of waiting time and low casting efficiency. Summary of the Invention

[0006] Therefore, it is necessary to provide an automotive crankcase casting system to address the problem of low production efficiency in the current crankcase casting process.

[0007] The above objectives are achieved through the following technical solutions:

[0008] An automotive crankcase casting system includes a furnace, a casting machine, and a transport module. The transport module is used to transport molten iron output from the furnace to the casting machine, and a plurality of molds are arranged below the casting machine.

[0009] The automotive crankcase gating system is executed according to the following steps:

[0010] Step S100: The casting machine sequentially casts the ink into all the molds and records the start time of casting for all the molds.

[0011] Step S200: Calculate the expected pouring end time of the corresponding mold based on the start pouring time of all the molds and the preset pouring speed of the pouring machine;

[0012] Step S300: Sort the expected pouring end times of all the molds in order from early to late, and carry out material receiving and transportation operations in advance according to the expected pouring end times of the corresponding molds in order from early to late.

[0013] Furthermore, the transport module includes a receiving unit, a transfer unit, and a unloading unit. The receiving unit is used to transport the molten iron output from the furnace to the transfer unit; the transfer unit is used to receive the molten iron from the receiving unit and transport it to the unloading unit; and the unloading unit is used to receive the molten iron from the transfer unit and transport it to the casting machine.

[0014] Furthermore, the casting machine is of two types, and each casting machine has a set of molds of the same size underneath it. When the molds under the two casting machines are of different sizes, the automotive crankshaft box casting system also performs the following steps:

[0015] In step S400, the casting machine sequentially casts the larger molds first, then the smaller molds, and records the start time of casting for all the molds.

[0016] Step S500: Calculate the expected pouring end time of the corresponding mold based on the start pouring time of all the molds and the preset pouring speed of the pouring machine;

[0017] Step S600: Sort the estimated pouring end times of all the molds in ascending order, and calculate the estimated pouring end time tn of the current mold and the estimated pouring end time tn of the next mold in ascending order. +1 The time difference ΔT1, the estimated pouring end time tn of the next mold. +1 The estimated pouring end time tn of the next mold. +2 Time difference ΔT2;

[0018] Step S700: Compare the time difference ΔT1 and time difference ΔT2 with the preset time difference T respectively;

[0019] Step S710: When the time difference ΔT2 is greater than T and the time difference ΔT1 is greater than T, molten iron is transported according to the first transportation mode; when the time difference ΔT2 is greater than T and the time difference ΔT1 is less than T, molten iron is transported according to the second transportation mode.

[0020] Furthermore, the receiving unit includes two receiving vehicles, and the transfer unit includes one transfer vehicle; the first transportation mode includes:

[0021] Step S711: Determine whether the transfer car transported the molten iron ladles from the two receiving cars in the previous transaction;

[0022] Step S7111: If so, the transfer vehicle transports the molten iron ladle from any of the receiving vehicles;

[0023] Step S7112, if not, the transfer car transports the molten iron ladle from another receiving car.

[0024] Furthermore, the transfer vehicle is equipped with a heat preservation module; after step S7112, the following is also included:

[0025] Step S712: Obtain the temperature parameters of the molten iron ladle on the receiving car;

[0026] Step S7121: Compare the temperature parameters of the molten iron ladle on the receiving car with the preset temperature;

[0027] Step S7122: When the temperature parameter of the molten iron ladle on the receiving car is greater than or equal to the preset temperature, the transfer car receives the molten iron ladle on the receiving car and continues to transfer it; when the temperature parameter of the molten iron ladle on the receiving car is less than the preset temperature, the molten iron ladle on the transfer car and the molten iron ladle on the receiving car are exchanged, and the molten iron ladle on the receiving car receives the molten iron output from the furnace, and the transfer car receives the molten iron ladle on the receiving car and continues to transfer it.

[0028] Furthermore, the second mode of transportation includes:

[0029] Step S720: Determine whether the current mold and the next mold are molds of the same size;

[0030] Step S721: If yes, start reset mode;

[0031] Step S722: If not, after the current mold pouring is completed, the expected pouring end time of the next mold shall be used as the reference, and the material receiving and transfer operation shall be carried out in advance according to the expected pouring end time.

[0032] Furthermore, the receiving unit includes two receiving carts, each equipped with a heating module; the transfer unit includes one transfer cart, which is equipped with a heat preservation module; after step S722, the following is also included:

[0033] Step S723: Obtain the temperature parameters of the molten iron ladles on the two receiving cars;

[0034] Step S7231: Compare the temperature parameters of the molten iron ladles on the two receiving cars with the preset temperature respectively;

[0035] Step S7232: When the temperature parameters of the molten iron ladles on both receiving cars are greater than the preset temperature, the transfer car receives the molten iron ladles from both receiving cars and continues to transfer them; when the temperature parameter of the molten iron ladle on one of the receiving cars is greater than the preset temperature, the molten iron ladle on the transfer car is exchanged with the molten iron ladle on the other receiving car, and the molten iron ladles on both receiving cars receive the molten iron output from the furnace, and the transfer car receives the molten iron ladles from both receiving cars and continues to transfer them; when the temperature parameters of the molten iron ladles on both receiving cars are less than the preset temperature, the heating module is activated to heat the molten iron ladles on both receiving cars to the preset temperature.

[0036] Furthermore, the power of the heating module is positively correlated with the difference between the temperature parameter of the molten iron ladle on the receiving car and the preset temperature.

[0037] Furthermore, after step S710, the following is also included:

[0038] Step S730: When the time difference ΔT2 is less than T and the time difference ΔT1 is less than T, start the reset mode.

[0039] Furthermore, in the reset mode, the receiving unit, the transfer unit, and the unloading unit all stop moving. After all the molds have been cast, the casting machine sequentially casts the molds with larger dimensions first, and then casts the molds with smaller dimensions.

[0040] The beneficial effects of this invention are:

[0041] The present invention provides an automotive crankcase casting system that calculates the expected casting end time of the corresponding mold based on the start casting time of all molds and the preset casting speed of the casting machine during the casting process. Then, in order from morning to night, the receiving and transportation operations are carried out in advance according to the expected casting end time of the corresponding mold, thereby achieving seamless connection of mold casting, reducing the waiting time of the transportation department, and improving the casting efficiency of the mold. Attached Figure Description

[0042] Figure 1 This is a schematic diagram of the flow structure of an automotive crankcase casting system according to an embodiment of the present invention;

[0043] Figure 2 This is a schematic diagram illustrating the working principle of an automotive crankcase casting system according to an embodiment of the present invention.

[0044] in:

[0045] 100. Furnace;

[0046] 200. Receiving track; 201. Receiving trolley;

[0047] 300. Transfer track; 301. Transfer vehicle;

[0048] 400. Feeding track; 401. Feeding trolley;

[0049] 500, large-size molds;

[0050] 600. Small-sized molds;

[0051] 700. Ladle of molten iron. Detailed Implementation

[0052] 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.

[0053] The serial numbers assigned to components in this document, such as "first," "second," etc., are merely used to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages). In the description of this invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and 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. Therefore, they should not be construed as limitations on the invention.

[0054] 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.

[0055] An embodiment of the present invention provides an automotive crankcase casting system for casting automotive crankcases. In this embodiment, the automotive crankcase casting system is configured to include a furnace 100, a casting machine, and a transport module. The transport module is used to transport the molten iron output from the furnace 100 to the casting machine. Several molds are arranged below the casting machine, which are used as crankcase molds. The casting machine is used to receive the molten iron and pour it into the molds.

[0056] like Figure 1 As shown, Figure 1 This is a schematic diagram of the flow structure of an automotive crankcase casting system according to an embodiment of the present invention. The automotive crankcase casting system is executed according to the following steps:

[0057] Step S100: The casting machine sequentially casts the ink into all the molds and records the start time of casting for all the molds.

[0058] Taking a casting machine with six molds at the bottom as an example, the casting machine pours into the six molds in sequence and records the start time of the pouring of the six molds.

[0059] Specifically, the start time of pouring for each of the six molds can be recorded by computer. Assume the start time of pouring for the first mold is 00:00, the second mold is 00:10, the third mold is 00:20, the fourth mold is 00:30, the fifth mold is 00:40, and the sixth mold is 00:50. The total time for the ladle 700 to receive the molten iron output from the furnace 100, plus the time for the transport unit to make one round trip between the furnace 100 and the pouring machine, is set to ten minutes.

[0060] It is understandable that the time it takes for the ladle 700 to receive the molten iron from the furnace 100 can be changed by altering the speed at which the molten iron is output from the furnace 100, and the time it takes for the transport unit to travel back and forth between the furnace 100 and the casting machine can be changed by altering the speed of the transport unit on the transport channel.

[0061] Step S200: Calculate the expected pouring end time of the corresponding mold based on the start pouring time of all the molds and the preset pouring speed of the pouring machine;

[0062] Specifically, the estimated pouring end time of the corresponding mold is calculated by using the computer-recorded start pouring time of the six molds and the preset pouring speed of the pouring machine.

[0063] The estimated completion time of the corresponding mold is the start time of the mold plus the volume of the mold divided by the preset pouring speed of the pouring machine.

[0064] Assuming the time obtained by dividing the volume of the mold by the preset pouring speed of the casting machine is one hour, the estimated pouring end time for the first mold is 01:00, the estimated pouring end time for the second mold is 01:10, the estimated pouring end time for the third mold is 01:20, the estimated pouring end time for the fourth mold is 01:30, the estimated pouring end time for the fifth mold is 01:40, and the estimated pouring end time for the sixth mold is 01:50.

[0065] Step S300: Sort the expected pouring end times of all the molds in order from early to late, and carry out material receiving and transportation operations in advance according to the expected pouring end times of the corresponding molds in order from early to late.

[0066] The estimated completion times of the six molds are arranged in ascending order: first mold, second mold, third mold, fourth mold, fifth mold, and sixth mold. When the sixth mold begins pouring, the transport unit moves along the transport channel from the pouring machine to the furnace 100, receives the molten iron output from the furnace 100 via the ladle 700, and then moves along the transport channel from the furnace 100 to the pouring machine. At this time, the first mold has just finished pouring, and the ladle 700 transported by the transport unit can be used to pour the molten iron for the first mold via the pouring machine. This achieves a seamless connection for the pouring of the first mold, reduces the waiting time of the transport unit, and thus improves the pouring efficiency of the molds.

[0067] The casting process for the second, third, fourth, fifth, and sixth molds is the same as that for the first mold, and will not be repeated here.

[0068] Understandably, once a mold completes a pouring task, its next estimated pouring end time will be entered into the sorting sequence again and arranged in chronological order. For example, when the first mold starts pouring again, if its estimated pouring end time is 02:00, it will be sorted in order from morning to night, namely the second mold, the third mold, the fourth mold, the fifth mold, the sixth mold, and the first mold, and so on.

[0069] Understandably, if mold changeover time needs to be considered, we can assume the mold changeover time is one minute. Then, the time obtained by dividing the mold volume by the preset pouring speed of the casting machine can be set to 59 minutes. Thus, the time after the first mold finishes pouring and is replaced is still 01:00, the time after the second mold finishes pouring and is replaced is still 01:10, the time after the third mold finishes pouring and is replaced is still 01:20, the time after the fourth mold finishes pouring and is replaced is still 01:30, the time after the fifth mold finishes pouring and is replaced is still 01:40, and the time after the sixth mold finishes pouring and is replaced is still 01:50.

[0070] In some embodiments, the transport module is configured to include a receiving unit, a transfer unit, and a unloading unit. The receiving unit is used to transport the molten iron output from the furnace 100 to the transfer unit; the transfer unit is used to receive the molten iron from the receiving unit and transport it to the unloading unit; and the unloading unit is used to receive the molten iron from the transfer unit and transport it to the casting machine.

[0071] Specifically, such as Figure 2 As shown, the transportation module includes a receiving track 200, a transfer track 300, and a discharge track 400. One end of the transfer track 300 is vertically connected to the middle of the receiving track 200, and the other end is vertically connected to the middle of the discharge track 400. The receiving track 200, transfer track 300, and discharge track 400 together form an H-shape. Two furnaces 100 and two casting machines are each used. The two furnaces 100 are respectively located at both ends of the receiving track 200, and the two casting machines are respectively located at both ends of the discharge track 400. The receiving unit includes two receiving carts 201, both of which can slide along the receiving track 200. The system consists of a receiving car 201 corresponding to a furnace 100. The receiving car 201 is used to transport the molten iron ladle 700 containing molten iron of a preset volume output from the furnace 100 to the transfer track 300. The transfer unit includes a transfer car 301 that can slide along the transfer track 300. The transfer car 301 is used to receive the molten iron ladle 700 on the receiving car 201 and transport it to the unloading track 400. The unloading unit includes two unloading cars 401 that can slide along the unloading track 400. The unloading cars 401 are used to receive the molten iron ladle 700 on the transfer car 301 and transport it to the casting machine.

[0072] Furthermore, when the transfer car 301 moves along the transfer track 300 to the junction of the receiving track 200 and the transfer track 300, one of the receiving cars 201 simultaneously moves a ladle 700 containing molten iron with a preset volume output from the furnace 100 from the furnace 100 to the junction of the receiving track 200 and the transfer track 300, and one of the unloading cars 401 simultaneously moves the ladle 700 containing molten iron with a preset volume output from the furnace 100 from the junction of the transfer track 300 and the unloading track 400 to the casting machine; when the transfer car 301 moves along the transfer track 300 to the junction of the transfer track 300 and the unloading track 400, one of the unloading cars 401 simultaneously moves from the casting machine to the junction of the transfer track 300 and the unloading track 400, and one of the receiving cars 201 simultaneously moves from the junction of the receiving track 200 and the transfer track 300 to the furnace 100.

[0073] Understandably, the time it takes for the receiving car 201 to travel back and forth between the furnace 100 and the casting machine once is twice that of the time it takes for the receiving car 201 to move the ladle 700 containing molten iron of a preset volume output from the furnace 100 from the furnace 100 to the junction of the receiving track 200 and the transfer track 300. This includes the time it takes for the receiving car 201 and the transfer car 301 to exchange ladles, the time it takes for the transfer car 301 to move from the junction of the receiving track 200 and the transfer track 300 to the junction of the transfer track 300 and the unloading track 400, the time it takes for the transfer car 301 and the unloading car 401 to exchange ladles, and the time it takes for the unloading car 401 to move from the junction of the transfer track 300 and the unloading track 400 to the casting machine.

[0074] Specifically, to facilitate the exchange of molten iron ladles 700 on receiving car 201, transfer car 301 and unloading car 401, each receiving car 201 is equipped with one molten iron ladle 700 to receive molten iron output from furnace 100; two molten iron ladles 700 are equipped on transfer car 301 to exchange molten iron ladles 700 on the two receiving cars 201; and each unloading car 401 is equipped with one molten iron ladle 700 to exchange molten iron ladles 700 on transfer car 301.

[0075] Specifically, to facilitate the exchange of molten iron ladles 700 on receiving car 201, transfer car 301, and unloading car 401, the automobile crankcase casting system is configured to also include mechanical claws. The number of mechanical claws is set to four. Two mechanical claws are respectively located at the junction of receiving track 200 and transfer track 300. One mechanical claw is used to grab the molten iron ladle 700 on receiving car 201 and place it on transfer car 301, and the other mechanical claw is used to grab the molten iron ladle 700 on transfer car 301 and place it on receiving car 201. The other two mechanical claws are respectively located at the junction of transfer track 300 and unloading track 400. One mechanical claw is used to grab the molten iron ladle 700 on transfer car 301 and place it on unloading car 401, and the other mechanical claw is used to grab the molten iron ladle 700 on unloading car 401 and place it on transfer car 301.

[0076] In other embodiments, a set of molds of the same size is provided below each casting machine. When the molds below two casting machines are of different sizes, for ease of description, as follows: Figure 2 As shown, the mold located above the transfer track 300 is named large mold 500, and the mold located below the transfer track 300 is named small mold 600. The size of the large mold 500 is set to be larger than the size of the small mold 600, and the number of both the large mold 500 and the small mold is set to three.

[0077] It is understandable that, with the preset pouring speed of the pouring machine remaining unchanged, the time required to pour the large-size mold 500 is greater than the time required to pour the small-size mold 600.

[0078] The automotive crankcase gating system is also used to perform the following steps:

[0079] In step S400, the casting machine sequentially casts the larger molds first, then the smaller molds, and records the start time of casting for all the molds.

[0080] Specifically, if the small mold 600 is fed and poured first, due to the short time required for pouring the small mold 600, one of the small molds 600 may finish pouring before all the large molds 500 are fed and poured. In this case, two scenarios exist: first, the large molds 500 continue to be fed and poured, leaving the already poured small mold 600 in a waiting state; second, the already poured small molds 600 are fed and poured first, leaving the unpoured large molds 500 in a waiting state, resulting in a large number of molds not yet in the pouring process. When all the large molds 500 begin pouring, the short time required for pouring the small molds 600 necessitates frequent starting of the receiving cart 201, transfer cart 301, and unloading cart 401, leading to chaotic operation of these vehicles and low mold pouring efficiency.

[0081] If large mold 500 and small mold 600 are cross-carried and poured, the time required to pour small mold 600 is relatively short. On the one hand, this can easily lead to a large number of molds that are not in the pouring state. On the other hand, the receiving car 201, the transfer car 301 and the unloading car 401 need to be started frequently, which will cause the receiving car 201, the transfer car 301 and the unloading car 401 to operate in a chaotic manner, resulting in low mold pouring efficiency.

[0082] Therefore, the casting machine is set to first cast three large molds 500, then cast three small molds 600, and the start time of casting for all molds is recorded.

[0083] Step S500: Calculate the expected pouring end time of the corresponding mold based on the start pouring time of all the molds and the preset pouring speed of the pouring machine;

[0084] Specifically, the estimated pouring end time of the corresponding mold is calculated by using the computer-recorded start pouring times of the three large molds 500 and three small molds 600, and the preset pouring speed of the pouring machine. Assume that the start pouring time of the first large mold 500 is 00:00, the start pouring time of the second large mold 500 is 00:10, the start pouring time of the third large mold 500 is 00:20, the start pouring time of the first small mold 600 is 00:30, the start pouring time of the second small mold 600 is 00:40, and the start pouring time of the third small mold 600 is 00:50.

[0085] The estimated completion time of the corresponding mold is the start time of the mold plus the volume of the mold divided by the preset pouring speed of the pouring machine.

[0086] Assuming that the time obtained by dividing the volume of the large mold 500 by the preset pouring speed of the pouring machine is one hour, the estimated pouring end time of the first large mold 500 is 01:00, the estimated pouring end time of the second large mold 500 is 01:10, and the estimated pouring end time of the third large mold 500 is 01:20.

[0087] Assuming that the time obtained by dividing the volume of the small mold 600 by the preset pouring speed of the pouring machine is 20 minutes, then the expected pouring end time of the first small mold 600 is 00:50, the expected pouring end time of the second small mold 600 is 01:00, and the expected pouring end time of the third small mold 600 is 01:10.

[0088] Step S600: Sort the estimated pouring end times of all the molds in ascending order, and calculate the estimated pouring end time tn of the current mold and the estimated pouring end time tn of the next mold in ascending order. +1 The time difference ΔT1, the estimated pouring end time tn of the next mold. +1 The estimated pouring end time tn of the next mold. +2 Time difference ΔT2;

[0089] Specifically, the estimated completion times of the pouring of the three large molds 500 and the three small molds 600 are ordered from earliest to latest as follows: the order is: the first small mold 600, the first large mold 500 and the second small mold 600, the second large mold 500 and the third small mold 600, and the third large mold 500. In other words, the first small mold 600 will be poured first, at which point ΔT1 is ten minutes and ΔT2 is ten minutes.

[0090] Step S700: Compare the time difference ΔT1 and time difference ΔT2 with the preset time difference T respectively;

[0091] Specifically, the preset time difference T is the set time difference, which can be set according to requirements.

[0092] Step S710: When the time difference ΔT2 is greater than T and the time difference ΔT1 is greater than T, the molten iron ladle on the receiving car is transported according to the first transportation mode; when the time difference ΔT2 is greater than T and the time difference ΔT1 is less than T, the molten iron ladle on the receiving car is transported according to the second transportation mode.

[0093] Specifically, when the time difference ΔT2 is greater than T and the time difference ΔT1 is greater than T, it means that the expected end times of the next three molds are relatively far apart, and the three molds can be transported and poured separately. In this case, the molten iron ladle on the receiving car 201 is transported according to the first transportation mode. When the time difference ΔT2 is greater than T and the time difference ΔT1 is less than T, it means that the expected end times of the next two molds are relatively close, and the two molds can be transported and poured simultaneously. In this case, the molten iron ladle on the receiving car 201 is transported according to the second transportation mode to improve the pouring efficiency of the molds.

[0094] In a further embodiment, the first transportation mode includes:

[0095] Step S711: Determine whether the transfer car transported the molten iron ladles from the two receiving cars in the previous transaction;

[0096] Specifically, in order to reduce the influence of the temperature of the molten iron ladle 700 on the temperature of the molten iron, it is necessary to determine whether the previous transfer car 301 transported the molten iron ladle from the two receiving cars 201.

[0097] Step S7111: If so, the transfer vehicle transports the molten iron ladle from any of the receiving vehicles;

[0098] Specifically, when the transfer car 301 is transporting molten iron ladles 700 from two receiving cars 201, it means that the waiting time for the molten iron ladles 700 from the two receiving cars 201 is relatively short, the temperature will not be too low, and thus the impact on the temperature of the molten iron is relatively small. Therefore, it is set that the transfer car 301 transports molten iron ladles 700 from either of the receiving cars 201.

[0099] Step S7112, if not, the transfer car transports the molten iron ladle from another receiving car.

[0100] Specifically, when the transfer car 301 is transporting the molten iron ladle 700 on one of the receiving cars 201, it means that the waiting time for the molten iron ladle 700 on the other receiving car 201 is relatively long. In order to avoid the molten iron ladle 700 being unused for a long time and thus causing the temperature of the molten iron to drop too low, the transfer car 301 is set to transport the molten iron ladle 700 on the other receiving car 201.

[0101] In a further embodiment, after step S7112, the method further includes:

[0102] Step S712: Obtain the temperature parameters of the molten iron ladle on the receiving car;

[0103] Specifically, the temperature parameters of the ladle 700 on the receiving car 201 can be obtained by setting a temperature sensor on the ladle 700.

[0104] Step S7121: Compare the temperature parameters of the molten iron ladle on the receiving car with the preset temperature;

[0105] Specifically, the preset temperature is the set temperature, which can be changed according to needs.

[0106] Step S7122: When the temperature parameter of the molten iron ladle on the receiving car is greater than or equal to the preset temperature, the transfer car receives the molten iron ladle on the receiving car and continues to transfer it; when the temperature parameter of the molten iron ladle on the receiving car is less than the preset temperature, the molten iron ladle on the transfer car and the molten iron ladle on the receiving car are exchanged, and the molten iron ladle on the receiving car receives the molten iron output from the furnace, and the transfer car receives the molten iron ladle on the receiving car and continues to transfer it.

[0107] Specifically, when the temperature parameter of the molten iron ladle 700 on the corresponding receiving car 201 is greater than or equal to the preset temperature, it indicates that the temperature of the molten iron ladle 700 on the receiving car 201 has little impact on the molten iron temperature. The molten iron ladle 700 on the receiving car 201 can normally receive the molten iron from the furnace 100, and the transfer car 301 receives the molten iron ladle on the corresponding receiving car 201 and continues to transfer it. When the temperature parameter of the molten iron ladle 700 on the corresponding receiving car 201 is less than the preset temperature, it indicates that the temperature of the molten iron ladle 700 on the receiving car 201 has a greater impact on the molten iron temperature. In this case, the molten iron ladle 700 on the transfer car 301 and the molten iron ladle 700 on the corresponding receiving car 201 can be exchanged. The molten iron ladle 700 on the corresponding receiving car 201 then receives the molten iron output from the furnace 100, and the transfer car 301 receives the molten iron ladle 700 on the corresponding receiving car 201 and continues to transfer it.

[0108] In some embodiments, the second transportation mode includes:

[0109] Step S720: Determine whether the current mold and the next mold are molds of the same size;

[0110] Specifically, the transfer car 301 can only transport two molten iron ladles 700 at a time, and the unloading car 401 can only receive one molten iron ladle 700 at a time. Therefore, it is necessary to determine whether the current mold and the next mold are molds of the same size.

[0111] Step S721: If yes, start reset mode;

[0112] Specifically, when the current mold and the next mold are of the same size, it means that the expected completion time of the pouring of multiple molds is relatively concentrated. In order to avoid affecting the pouring efficiency of the mold, the reset mode needs to be activated at this time.

[0113] Step S722: If not, after the current mold pouring is completed, the expected pouring end time of the next mold shall be used as the reference, and the material receiving and transfer operation shall be carried out in advance according to the expected pouring end time.

[0114] Specifically, when the current mold and the next mold are not the same size, in order to reduce the transportation frequency of the receiving car 201, the transfer car 301 and the unloading car 401, it is set that after the current mold finishes casting, the current mold will not be cast immediately. Instead, the expected casting end time of the next mold will be used as the reference, and the receiving and transfer operations will be carried out in advance according to the expected casting end time.

[0115] In a further embodiment, the receiving cart 201 is equipped with a heating module; after step S722, the following is also included:

[0116] Step S723: Obtain the temperature parameters of the molten iron ladles on the two receiving cars;

[0117] Specifically, temperature parameters of the molten iron ladle 700 on the two receiving cars 201 can be obtained by setting a temperature sensor on the molten iron ladle 700.

[0118] Step S7231: Compare the temperature parameters of the molten iron ladles on the two receiving cars with the preset temperature respectively;

[0119] Step S7232: When the temperature parameters of the molten iron ladles on both receiving cars are greater than the preset temperature, the transfer car receives the molten iron ladles from both receiving cars and continues to transfer them; when the temperature parameter of the molten iron ladle on one of the receiving cars is greater than the preset temperature, the molten iron ladle on the transfer car is exchanged with the molten iron ladle on the other receiving car, and the molten iron ladles on both receiving cars receive the molten iron output from the furnace, and the transfer car receives the molten iron ladles from both receiving cars and continues to transfer them; when the temperature parameters of the molten iron ladles on both receiving cars are less than the preset temperature, the heating module is activated to heat the molten iron ladles on both receiving cars to the preset temperature.

[0120] Specifically, when the temperature parameters of the molten iron ladles 700 on both receiving cars 201 are greater than or equal to the preset temperature, it indicates that the temperature of the molten iron ladles 700 on both receiving cars 201 has little impact on the molten iron temperature, and the molten iron ladles 700 on both receiving cars 201 can normally receive molten iron from the furnace 100. The transfer car 301 receives the molten iron ladles from both receiving cars 201 and continues to transfer them. When the temperature parameter of the molten iron ladle 700 on one of the receiving cars 201 is greater than the preset temperature, it indicates that the temperature of the molten iron ladle 700 on the other receiving car 201 has a greater impact on the molten iron temperature. In this case, the molten iron ladle 700 on the transfer car 301 and the molten iron ladle 700 on the other receiving car 201 can be transferred together. After the exchange of ladles 700, the molten iron ladles 700 on the two receiving carts 201 receive the molten iron output from the furnace 100, and the transfer cart 301 receives the molten iron ladles on the two receiving carts 201 and continues to transfer them. When the temperature parameters of the molten iron ladles 700 on the two receiving carts 201 are lower than the preset temperature, it indicates that the temperature of the molten iron ladles 700 on the two receiving carts 201 has a significant impact on the temperature of the molten iron. At this time, the heating module can be started to heat the molten iron ladles 700 on the two receiving carts 201 to the preset temperature. Then the molten iron ladles 700 on the two receiving carts 201 can receive the molten iron from the furnace 100 normally again, and the transfer cart 301 can receive the molten iron ladles on the two receiving carts 201 and continue to transfer them.

[0121] In a further embodiment, the power of the heating module is set to be positively correlated with the difference between the temperature parameter of the molten iron ladle 700 on the receiving cart 201 and the preset temperature. That is, when the difference between the temperature parameter of the molten iron ladle 700 on the receiving cart 201 and the preset temperature is larger, it indicates that the temperature parameter of the molten iron ladle 700 on the receiving cart 201 is lower. In order to quickly raise the temperature of the molten iron ladle 700 on the receiving cart 201, the power of the heating module needs to be higher. When the difference between the temperature parameter of the molten iron ladle 700 on the receiving cart 201 and the preset temperature is smaller, it indicates that the temperature parameter of the molten iron ladle 700 on the receiving cart 201 is closer to the preset temperature. In order to save energy, the power of the heating module needs to be lower.

[0122] In other embodiments, a heat preservation module is provided on the transfer vehicle 301 to keep the temperature of the molten iron ladle 700 on the transfer vehicle 301 above a preset temperature.

[0123] In some embodiments, the method further includes the following after step S710:

[0124] Step S730: When the time difference ΔT2 is less than T and the time difference ΔT1 is less than T, start the reset mode.

[0125] Specifically, when the time difference ΔT2 is less than T and the time difference ΔT1 is less than T, it indicates that the expected end time of the three molds is relatively close, and two of the three molds must be molds of the same size. This means that the expected pouring end time of multiple molds is relatively concentrated. In order to avoid affecting the pouring efficiency of the molds, the reset mode needs to be activated at this time.

[0126] In a further embodiment, the reset mode is that the receiving trolley 201, the transfer trolley 301 and the unloading trolley 401 all stop moving. After all the molds have been poured, the casting machine pours the molds with larger sizes first, and then pours the molds with smaller sizes.

[0127] 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.

[0128] 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 present 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 this patent should be determined by the appended claims.

Claims

1. An automotive crankcase pouring system characterized by, The automobile crankcase pouring system comprises a furnace, a pouring machine and a transportation module, the transportation module is used to transport the molten iron output by the furnace to the pouring machine, and comprises a receiving unit, a transfer unit and a discharging unit, the receiving unit is used to transport the molten iron output by the furnace to the transfer unit, and comprises two receiving trolleys; the transfer unit is used to receive the molten iron on the receiving unit and transport it to the discharging unit, and comprises a transfer trolley; the discharging unit is used to receive the molten iron on the transfer unit and transport it to the pouring machine; the number of the pouring machines is two, and each pouring machine is provided below with a group of molds of the same size; When the sizes of the molds below the two pouring machines are different, the automobile crankcase pouring system performs the following steps: Step S100, the pouring machine pours all the molds in turn and records the start pouring time of all the molds; Step S200, the expected pouring end time of the corresponding mold is calculated according to the start pouring time of all the molds and the preset pouring speed of the pouring machine; Step S300, the expected pouring end time of all the molds is sorted in the order from early to late, and the receiving and transporting operations are performed in advance according to the expected pouring end time of the corresponding mold in the order from early to late; Step S400, the pouring machine pours the molds of larger size first and then pours the molds of smaller size in turn and records the start pouring time of all the molds; Step S500, the expected pouring end time of the corresponding mold is calculated according to the start pouring time of all the molds and the preset pouring speed of the pouring machine; Step S600, sort all the estimated pouring end times of the molds in order from early to late, and calculate the time difference between the current corresponding estimated pouring end time of the mold and the estimated pouring end time of the next mold ;​​​​​ Step S700, comparing the time difference , the time difference with the preset time difference T, respectively; Step S710, when the time difference is greater than T and the time difference is greater than T, transporting the molten iron according to the first transportation mode; when the time difference is greater than T and the time difference is less than T, transporting the molten iron according to the second transportation mode; The first transportation mode comprises: Step S711, it is judged whether the transfer trolley transports the iron ladles on the two receiving trolleys last time; Step S7111, if yes, the transfer trolley transports the iron ladle on any one of the receiving trolleys; Step S7112, if no, the transfer trolley transports the iron ladle on the other receiving trolley; The second transportation mode comprises: Step S720, it is judged whether the corresponding mold and the next mold are molds of the same size; Step S721, if yes, the reset mode is started; Step S722, if no, after the corresponding mold is poured, the expected pouring end time of the next mold is used as the reference, and the receiving and transferring operations are performed in advance according to the expected pouring end time.

2. The automotive crankcase pouring system of claim 1, wherein, The transfer trolley is provided with a heat preservation module; after step S7112, the following steps are further included: Step S712, the temperature parameter of the iron ladle on the corresponding receiving trolley is obtained; Step S7121, the temperature parameter of the iron ladle on the corresponding receiving trolley is compared with a preset temperature; Step S7122, when the temperature parameter corresponding to the ladle on the receiving trolley is greater than or equal to the preset temperature, the transfer trolley receives the ladle corresponding to the receiving trolley and continues to transfer; when the temperature parameter corresponding to the ladle on the receiving trolley is less than the preset temperature, the ladle on the transfer trolley and the ladle corresponding to the receiving trolley are exchanged, and then the ladle corresponding to the receiving trolley receives the molten iron output by the furnace, the transfer trolley receives the ladle corresponding to the receiving trolley and continues to transfer.

3. The automotive crankcase pouring system of claim 1, wherein Each of the receiving trolleys is provided with a heating module; and the transfer trolley is provided with a heat preservation module. After step S722, the method further comprises: Step S723, obtaining the temperature parameters of the ladles on the two receiving trolleys; Step S7231, comparing the temperature parameters of the ladles on the two receiving trolleys with the preset temperature respectively; Step S7232, when the temperature parameters of the ladles on the two receiving trolleys are both greater than the preset temperature, the transfer trolley receives the ladles on the two receiving trolleys and continues to transfer; when the temperature parameter of the ladle on one of the receiving trolleys is greater than the preset temperature, the ladle on the transfer trolley and the ladle on the other receiving trolley are exchanged, and then the two ladles on the receiving trolleys receive the molten iron output by the furnace, the transfer trolley receives the two ladles on the receiving trolleys and continues to transfer; when the temperature parameters of the ladles on the two receiving trolleys are both less than the preset temperature, the heating modules are started to heat the two ladles on the receiving trolleys to the preset temperature respectively.

4. The automotive crankcase pouring system of claim 3, wherein, The power of the heating module is positively correlated with the difference between the temperature parameter of the ladle on the receiving trolley and the preset temperature.

5. The automotive crankcase pouring system of claim 1, wherein, After step S710, the method further comprises: Step S730, when the time difference is less than T and the time difference is less than T, a reset mode is started.

6. The automotive crankcase pouring system of claim 5, wherein, The reset mode is that the receiving unit, the transfer unit and the discharging unit all stop moving, and after all the molds are finished pouring, the pouring machine pours the molds in sequence, first the molds with larger size and then the molds with smaller size.

Images