An oxygen-filled die casting device based on casting processing and a die casting process

Abstract

The application discloses an oxygen-filled die casting device and die casting process based on casting processing and relates to the technical field of automobile manufacturing. The device comprises a die casting machine, a die, a lifting assembly and a cover assembly. After the die is opened, the lifting assembly moves the cover assembly to the position between the punch and the die, and in this process, the cover assembly is passively unfolded and covers the die to form a spraying cavity. A cleaning assembly sprays high-speed airflow to clean the die. A spraying assembly sprays release agent to the die cavity, and the generated aerosol is limited in the spraying cavity. The high-speed airflow sprayed by the cleaning assembly passively drives the cover assembly to unfold to form a closed spraying cavity, and the cleaning airflow and the release agent aerosol are limited in the cavity. The position adjustment and the buckling action are triggered synchronously, and the single-cycle time is shortened.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile manufacturing, in particular to an oxygen-filled die casting device and die casting process based on casting processing. BACKGROUND

[0002] Die casting is a casting method that uses high pressure to force molten metal into a mold cavity, and rapidly cools and solidifies under pressure to form a casting. It is widely used in the automotive industry. During die casting, if the air in the cavity cannot be discharged in time, it will cause defects such as porosity and porosity in the casting, affecting the mechanical properties and quality of the casting. In order to solve this problem, oxygen-filled die casting technology has emerged. This technology fills oxygen into the mold cavity before die casting, so that the air in the cavity is replaced by oxygen. When the metal liquid fills, the oxygen reacts with the metal liquid to form oxide particles, which are dispersed in the casting, reducing the formation of pores.

[0003] In the die casting process, the spraying of release agent is an important link. The release agent can form a thin film on the surface of the mold to prevent the metal liquid from sticking to the mold, facilitate the demolding of the casting, and also play a role in cooling and protecting the mold. At present, the existing die casting machine takes out the casting by a taking mechanism after opening the mold, and then a spraying mechanism sprays the release agent on the mold. However, a large amount of gas mist is generated during the spraying of the release agent, which is dispersed in large quantities and pollutes the surrounding environment. SUMMARY

[0004] The purpose of the present application is to provide an oxygen-filled die casting device and die casting process based on casting processing to solve the above-mentioned deficiencies in the prior art.

[0005] In order to achieve the above-mentioned purpose, the present application provides the following technical solution: an oxygen-filled die casting device based on casting processing, comprising a die casting machine, a mold and a lifting assembly, further comprising:

[0006] A cover assembly, after the mold is opened, the lifting assembly moves the cover assembly so that the cover assembly moves between the male mold and the female mold of the mold. In this process, the cover assembly is passively unfolded and covers the mold to form a spraying cavity;

[0007] A cleaning assembly, the cleaning assembly sprays high-speed airflow to clean the mold;

[0008] A spraying assembly for spraying release agent to the mold cavity, the generated gas mist is limited in the spraying cavity;

[0009] After the spraying is completed, the cleaning assembly sucks the gas mist in the spraying cavity, and the lifting assembly moves upward and synchronously drives the cover assembly to retract to separate from the mold.

[0010] Preferably, the die casting machine is used to control the mold to open and close.

[0011] Preferably, the lifting assembly includes a horizontal part and a vertical part, and the position of the cover assembly is adjusted by the cooperation of the horizontal part and the vertical part.

[0012] Preferably, the cover assembly includes a middle shell, a sliding sleeve, and a flow guide sleeve, the middle shell is fixedly connected with the lower part of the lifting assembly, the sliding sleeve is slidably connected to the outside of the middle shell, and the flow guide sleeve is fixedly installed on the outside of the sliding sleeve.

[0013] Preferably, an air flow channel is arranged between the flow guide sleeve and the sliding sleeve.

[0014] Preferably, the cleaning assembly includes air nozzles, a first connecting pipe, an internal collecting pipe, a vertical pipe, a first reducing pipe, a second reducing pipe, an air flow control member, and a second connecting pipe, the air nozzles are connected to the internal collecting pipe through the first connecting pipe, the lower part of the vertical pipe is connected to the internal collecting pipe, the upper part of the vertical pipe is connected to the first reducing pipe, the second reducing pipe is arranged on the upper part of the first reducing pipe, the air flow control member is arranged between the second reducing pipe and the first reducing pipe, one end of the second connecting pipe is connected to the second reducing pipe, and the other end of the second connecting pipe is connected to a bidirectional air pump.

[0015] Preferably, the drive part includes a central shaft, a turnover sleeve, a pin column, an annular groove, a straight groove, a base, a spring, and a connecting member, the base is fixedly installed on the middle shell, the central shaft is rotatably connected to the base, the turnover sleeve is fixedly installed on the central shaft, the annular groove and the straight groove are both arranged on the turnover sleeve, the pin column is fixedly connected to the lifting assembly, one end of the spring is connected to the sliding sleeve, and the other end of the spring is connected to the central shaft, one end of the connecting member is connected to the sliding sleeve, and the other end of the connecting member is connected to the central shaft.

[0016] Preferably, the spraying assembly includes adjustable nozzles, a third connecting pipe, and a fourth connecting pipe, the fourth connecting pipe is fixedly installed on the middle shell, and the nozzles are connected to the fourth connecting pipe through the third connecting pipe.

[0017] Preferably, the air flow control member includes an isolation plate, a rotating shaft, and a flow guide piece, the isolation plate is fixedly installed on the upper part of the first reducing pipe, the flow guide piece is installed on the rotating shaft, a pair of rotating shafts are rotatably connected to the isolation plate, and the included angle between the pair of flow guide pieces is passively adjusted according to the different directions of air flow.

[0018] A die casting process based on casting processing, comprising the following steps:

[0019] S1, die closing controlled by the die casting machine: the die casting machine is started, and the die casting machine controls the punch and the die to close, forming a complete die cavity, and then the molten metal is injected into the die cavity under the pressure of the die casting machine to complete the die casting;

[0020] S2, die opening: after the die casting is completed, the die is opened by the die casting machine, and the punch and the die are separated to expose the formed casting;

[0021] Take out the casting: the casting is taken out from the mold by manual or mechanical arm and the like;

[0022] S3, action of the lifting assembly: the lifting assembly is started, and the horizontal part and the vertical part cooperate to move to adjust the position of the cover assembly;

[0023] The horizontal part first drives the cover assembly to move in the horizontal direction to align the area between the punch and the die of the mold, and then the vertical part moves in the vertical direction to accurately move the cover assembly between the punch and the die of the mold, the cover assembly is passively unfolded, and the cover assembly is gradually covered on the mold to form a closed spraying cavity;

[0024] S4, start of the cleaning assembly: the cleaning assembly is started, the bidirectional air pump supplies air to the second reducing pipe through the second connecting pipe, the airflow passes through the airflow control member into the first reducing pipe, the vertical pipe, and finally the high-speed airflow is sprayed from the air nozzle through the first connecting pipe, and the high-speed airflow cleans the surface of the punch and the die of the mold;

[0025] S5, work of the spraying assembly: the spraying assembly is started, the release agent is transported to the adjustable nozzle through the fourth connecting pipe and the third connecting pipe, the spraying angle and flow of the adjustable nozzle are adjusted according to the specific shape of the mold cavity and the spraying requirement, and the release agent is uniformly sprayed to the mold cavity;

[0026] Gas mist limitation: since the cover assembly is unfolded to form a spraying cavity, the gas mist generated during the spraying process is limited in the cavity;

[0027] S6, the cleaning assembly is switched to the suction mode: after the spraying is completed, the bidirectional air pump is switched to the suction mode, and the release agent mist remaining in the spraying cavity is sucked into the pipeline of the cleaning assembly under the suction action;

[0028] S7, the horizontal part and the vertical part of the lifting assembly cooperate again to move the cover assembly away from the punch and the die of the mold, the sliding sleeve is retracted inward along the middle shell to separate from the mold, the spraying cavity disappears, and the lifting assembly is reset to the initial position to prepare for the next die casting cycle.

[0029] In the technical scheme, the oxygen-filled die casting device and die casting process based on casting processing are provided, the cover assembly is passively driven to expand by the position adjustment of the lifting assembly, so that a closed spraying cavity is formed, the clean airflow and the release agent aerosol are limited in the cavity, when cleaning, the high-speed airflow is directed to flush the mold surface, the residual oxide is cleaned with the airflow, the cleaning effect is good and there is no splashing, when spraying, the aerosol does not spread, the release agent utilization rate is improved; the position adjustment of the cover assembly is triggered synchronously with the buckling action, the single cycle time is shortened, and the beat efficiency is improved; the suction mode is switched by the bidirectional air pump of the cleaning assembly, the residual aerosol in the cavity is directly sucked after spraying is completed, and the process closed loop of cleaning, spraying and sucking is realized. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0031] Figure 1 It is a spraying release agent structure schematic view of the oxygen-filled die casting device and die casting process based on casting processing of the present application.

[0032] Figure 2 It is a cover assembly structure schematic view of the oxygen-filled die casting device and die casting process based on casting processing of the present application.

[0033] Figure 3 It is a cleaning assembly structure schematic view of the oxygen-filled die casting device and die casting process based on casting processing of the present application.

[0034] Figure 4 It is a local structure schematic view of the oxygen-filled die casting device and die casting process based on casting processing of the present application.

[0035] Figure 5 It is a gas flow control piece structure schematic view of the oxygen-filled die casting device and die casting process based on casting processing of the present application.

[0036] Figure 6 It is a local top view of the lifting assembly of the oxygen-filled die casting device and die casting process based on casting processing of the present application.

[0037] Figure 7 It is a gas nozzle and spray head structure schematic view of the oxygen-filled die casting device and die casting process based on casting processing of the present application.

[0038] Figure 8 It is a sliding sleeve and flow guide sleeve schematic view of the oxygen-filled die casting device and die casting process based on casting processing of the present application.

[0039] Figure 9 Figure 1 is a schematic view of a driving part of a cast processing based oxygen-filled die casting device and die casting process according to the present application;

[0040] Figure 10 Figure 2 is an enlarged schematic view of A of a cast processing based oxygen-filled die casting device and die casting process according to the present application;

[0041] Figure 11 Figure 3 is an enlarged schematic view of B of a cast processing based oxygen-filled die casting device and die casting process according to the present application.

[0042] Figure 1 is a schematic view of a driving part of a cast processing based oxygen-filled die casting device and die casting process according to the present application; DETAILED DESCRIPTION

[0043] In order to make the skilled in the art better understand the technical solutions of the present application, the present application will be further described in detail below with reference to the drawings.

[0044] Please refer to Figures 1-11 The cast processing based oxygen-filled die casting device provided by the embodiment of the present application comprises a die casting machine 1, a mold 2 and a lifting assembly 3, and further comprises:

[0045] A cover assembly 4, after the mold 2 is opened, the lifting assembly 3 moves the cover assembly 4, so that the cover assembly 4 is moved to between the convex mold and the concave mold of the mold 2, in this process, the cover assembly 4 is passively unfolded and covers the mold 2, to form a spraying cavity;

[0046] A cleaning assembly 5, the cleaning assembly 5 sprays high-speed airflow, and the high-speed airflow is used to clean the mold 2;

[0047] A spraying assembly 6, which is used to spray release agent to the mold cavity of the mold 2, and the generated aerosol is limited in the spraying cavity;

[0048] After the spraying is completed, the cleaning assembly 5 sucks the aerosol in the spraying cavity, the lifting assembly 3 moves upward and synchronously drives the cover assembly 4 to retract to separate from the mold 2.

[0049] In the embodiment of the application, the die casting machine 1, the mold 2 and the lifting assembly 3 are all prior art, and no technical improvement is provided in the application, so the specific working principle is not described here.

[0050] The position of the cover assembly 4 can be controlled by the lifting assembly 3. When the mold 2 is closed, the cover assembly 4 is above the die casting machine 1. After the mold 2 is opened, the male mold and the female mold are separated, and there is a gap between them. At this time, after the part is taken out by the mechanical hand, the lifting assembly 3 first controls the cover assembly 4 to translate in the horizontal direction, and then controls the cover assembly 4 to descend in the vertical direction, so that the cover assembly 4 is accurately moved between the male mold and the female mold of the mold 2. During the descending process of the lifting assembly 3, the cover assembly 4 is passively unfolded and covers the mold 2 to form a spraying cavity.

[0051] At this time, the cleaning assembly 5 is started. The cleaning assembly 5 can spray high-speed airflow, and the direction of the airflow is towards the mold 2. Under the action of the high-speed airflow, the residual oxides on the mold 2 are cleaned. At the same time, under the action of the high-speed airflow, the surface temperature of the mold 2 is reduced.

[0052] The spraying assembly 6 sprays the release agent. The spraying assembly 6 sprays the release agent onto the mold 2, and the output end of the spraying assembly 6 is in the spraying cavity. The gas mist generated during the spraying process is limited in the cavity, which greatly reduces the escape of the release agent.

[0053] After the spraying is completed, the cleaning assembly 5 is switched to the suction mode. Under the action of suction, the residual release agent gas mist in the spraying cavity is sucked into the pipeline of the cleaning assembly 5.

[0054] Synchronously, under the action of suction, the residual release agent gas mist in the spraying cavity is sucked into the pipeline of the cleaning assembly 5.

[0055] Compared with the traditional open operation, the high-speed airflow sprayed by the cleaning assembly 5 passively drives the cover assembly 4 to unfold to form a closed spraying cavity, which limits the cleaning airflow and the release agent gas mist in the cavity. During cleaning, the high-speed airflow is directed to flush the surface of the mold 2, and the residual oxides are cleaned with the airflow. The cleaning effect is good and there is no splashing. During spraying, the gas mist does not spread, the utilization rate of the release agent is improved, the cleaning and clamping actions are triggered synchronously, the single-cycle time is shortened, and the beat efficiency is improved by about 15%. The device switches the suction mode by the bidirectional air pump of the cleaning assembly. After the spraying is completed, the residual gas mist in the cavity is directly sucked, realizing the process closed loop of "cleaning-spraying-suction".

[0056] In the embodiment of the application, the die casting machine 1 is used to control the mold 2 to open and close.

[0057] The die-casting machine 1 is an existing device, and controlling the opening and closing of the mold 2 is only one of its functions, and its working principle will not be described in detail here.

[0058] In the embodiment of the present invention, the lifting assembly 3 includes a horizontal portion 31 and a vertical portion 32 , and the position of the covering assembly 4 is adjusted by the cooperation of the horizontal portion 31 and the vertical portion 32 .

[0059] The horizontal part 31 first drives the covering assembly 4 to move in the horizontal direction so that it is aligned with the area between the punch and the die of the mold 2. Then the vertical part 32 moves in the vertical direction to accurately move the covering assembly 4 between the punch and the die of the mold 2. The horizontal part 31 moves along the opening and closing direction of the mold. According to the different opening and closing gaps, the movement of the horizontal part 31 should be changed accordingly to ensure that the covering assembly 4 is located at the center line position between the punch and the die.

[0060] In the embodiments of the present invention, please refer to Figure 2 and Figure 8 The cover assembly 4 includes a central shell 41, a sliding sleeve 43, and a guide sleeve 44. The central shell 41 is fixedly connected to the lower part of the lifting assembly 3, the sliding sleeve 43 is slidably connected to the outside of the central shell 41, and the guide sleeve 44 is fixedly installed on the outside of the sliding sleeve 43.

[0061] An air flow channel 442 is provided between the guide sleeve 44 and the sliding sleeve 43 .

[0062] The middle shell 41 is fixedly mounted on the lower part of the vertical portion 32. Figure 8 As shown in the figure, the end faces of the sliding sleeve 43 and the guide sleeve 44 are not flush. When the sliding sleeve 43 is extended, since there is a protrusion 441 between the guide sleeve 44 and the sliding sleeve 43, the protrusion 441 abuts against the end face of the mold 2, and the guide sleeve 44 abuts on the mold 2. In this way, the spray cavity and the air flow channel 442 can be connected, and the pressure is released through the reserved air flow channel 442, which helps the sliding sleeve 43 to finally move closer to the mold 2 and unfold through the cover assembly 4 to form a closed spray cavity.

[0063] In the embodiments of the present invention, please refer to Figure 3The cleaning assembly 5 comprises an air nozzle 51, a first connecting pipe 52, an inner collecting pipe 53, a vertical pipe 54, a first reducing pipe 55, a second reducing pipe 56, an air flow control piece 57, a second connecting pipe 58, the air nozzle 51 is connected to the inner collecting pipe 53 through the first connecting pipe 52, the lower part of the vertical pipe 54 is connected to the inner collecting pipe 53, the upper part of the vertical pipe 54 is connected to the first reducing pipe 55, the second reducing pipe 56 is arranged at the upper part of the first reducing pipe 55, the air flow control piece 57 is arranged between the second reducing pipe 56 and the first reducing pipe 55, one end of the second connecting pipe 58 is connected to the second reducing pipe 56, and the other end of the second connecting pipe 58 is connected to the bidirectional air pump.

[0064] When cleaning, first, the bidirectional air pump injects air to the second connecting pipe 58, the second connecting pipe 58 supplies air to the second reducing pipe 56, the air flow enters the first reducing pipe 55, the vertical pipe 54 through the air flow control piece 57, and finally the high-speed air flow is sprayed out from the air nozzle 51 through the first connecting pipe 52, so that the surface of the male die and the female die of the mold 2 is cleaned.

[0065] In the embodiment of the present application, please refer to Figures 9-11 The driving part 7 comprises a central shaft 71, a turnover sleeve 72, a pin column 73, an annular groove 74, a straight groove 75, a base 76, a spring 77 and a connecting piece 78, the base 76 is fixedly installed on the middle casing 41, the central shaft 71 is rotationally connected to the base 76, the turnover sleeve 72 is fixedly installed on the central shaft 71, the annular groove 74 and the straight groove 75 are both arranged on the turnover sleeve 72, the pin column 73 is fixed on the lifting assembly 3, one end of the spring 77 is connected to the sliding sleeve 43, and the other end is connected to the central shaft 71, one end of the connecting piece 78 is connected to the sliding sleeve 43, and the other end is connected to the central shaft 71.

[0066] As shown in the drawings, at this time, the cover assembly 4 is in an unfolded state, after spraying is completed, the lifting assembly 3 drives the cover assembly 4 to move upwards, under the guidance of the pin column 73, so as to force the pin column 73 to rotate, at this time, the connecting piece 78 is wound on the central shaft 71, the connecting piece 78 exerts a pulling force on the sliding sleeve 43, the pulling force overcomes the elastic force of the spring 77, so that the sliding sleeve 43 is retracted synchronously.

[0067] The position of the turnover sleeve 72 on the central shaft 71 is adjustable, the trigger time of the turnover sleeve 72 will change, so as to realize corresponding adaptation when the height of the mold changes.

[0068] In the embodiment of the present application, please refer to Figure 3The spraying assembly 6 comprises an adjustable nozzle 61, a third connecting pipe 62 and a fourth connecting pipe 63, the fourth connecting pipe 63 is fixedly installed on the middle casing 41, and the plurality of adjustable nozzles 61 are connected to the fourth connecting pipe 63 through the third connecting pipe 62.

[0069] The fourth connecting pipe 63 is connected with an external material pump, the material pump is used for sucking the release agent and injecting the release agent into the fourth connecting pipe 63, the release agent is sprayed from the adjustable nozzles 61 through the conveying of the third connecting pipe 62, the atomization effect of the adjustable nozzles can be adjusted, the release agent sprayed from the adjustable nozzles 61 is attached to the mold 2, the spraying cavity is formed due to the unfolding of the sliding sleeve 43, the gas mist generated in the spraying process is limited in the cavity, the gas mist is prevented from diffusing to the surrounding environment, the pollution to the working environment is reduced, and the utilization rate of the release agent is improved.

[0070] In the embodiment of the application, the airflow control member 57 comprises an isolation plate 571, a rotating shaft 572 and a guide vane 573, the isolation plate 571 is fixedly installed on the upper portion of the first reducing pipe 55, the guide vane 573 is installed on the rotating shaft 572, and the pair of rotating shafts 572 are rotationally connected to the isolation plate 571.

[0071] After the spraying is completed, the cleaning assembly 5 is switched to the suction mode, the bidirectional air pump is switched to the working direction, and is changed to suck the gas from the second connecting pipe 58, under the action of suction, the release agent mist remaining in the spraying cavity is sucked into the pipeline of the cleaning assembly 5, at this time, the airflow and the mist are mixed and enter the first reducing pipe 55, the diameter of the vertical pipe 54 is small, the mist is combined between the airflows, the diameter of the first reducing pipe 55 is much larger than that of the vertical pipe 54, after the airflow enters the first reducing pipe 55, the flow rate is reduced, and it is difficult to carry the mist to continue to move upward, so that a part of the mist is reduced to move upward, similarly, the airflow control member 57 is arranged on the upper portion of the first reducing pipe 55, when the airflow flows upward, the guide vanes 573 are turned over as shown in the attached Figure 5 At this time, the spacing between the guide vanes 573 is reduced, the flow channel is reduced to hinder the airflow, and the position is provided with a limiting block to ensure that the guide vanes 573 cannot be closed, the V-shaped structure formed by the guide vanes 573 helps to reduce the mist, the airflow is kept in an open state downward in the cleaning mode, and the airflow is pushed upward in the suction mode, and the guide vanes 573 rotate counterclockwise around the rotating shaft 572 to reduce the included angle.

[0072] The gas mist during suction is temporarily stored in the pipeline of the cleaning assembly 5. During the next cleaning, the gas flow carries the sucked release agent in the pipeline and sprays it out. Since the release agent has viscosity, it is directly sprayed onto the mold 2 after being blown out with the gas flow. The release agent adsorbs the oxides on the mold 2, and then the oxides are carried away from the mold 2 by the release agent through the continuous outflow of the gas flow. Compared with single gas flow cleaning, the release agent is mixed in the gas flow to achieve better cleaning effect. The flow rate between the sliding sleeve 43, the flow guide sleeve 44, the mold 2 and the air flow channel 442 is large, and the release agent mixed with impurities is blown out of the edge of the sliding sleeve 43. Compared with the traditional open center gas flow with small edge gas flow, the edge cleaning of the present application is more thorough.

[0073] In the prior art, some release agents are also recycled, but the recycled release agents have been contaminated and cannot be directly utilized. Even after additional filtration and extraction, they cannot be comparable to new release agents. Therefore, in the present solution, the release agents that should be scrapped are reused to adsorb and clean the residual oxides on the mold 2 by combining the gas flow, that is, to realize high-speed gas flow directional flushing + release agent synergistic adsorption, which further improves the cleaning effect compared with traditional single gas cleaning.

[0074] A casting processing die casting process based on the steps of:

[0075] The die casting machine 1 controls the mold 2 to close: the die casting machine 1 is started, and the die casting machine 1 controls the male die and the female die of the mold 2 to close to form a complete die casting cavity. Oxygen is filled into the mold 2 cavity, and then molten metal is injected into the cavity. The die casting is completed under the pressure of the die casting machine 1;

[0076] S2, mold 2 opening: after die casting, the die casting machine 1 controls the mold 2 to open, and the male die and the female die are separated to expose the formed casting;

[0077] Take out the casting: the casting is taken out from the mold 2 by artificial or mechanical arm and the like;

[0078] S3, lifting assembly 3 action: the lifting assembly 3 is started, and the horizontal part 31 and the vertical part 32 cooperate to move to adjust the position of the cover assembly 4;

[0079] The horizontal part 31 first drives the cover assembly 4 to move in the horizontal direction, so that it is aligned with the area between the male die and the female die of the mold 2. Then the vertical part 32 moves in the vertical direction to accurately move the cover assembly 4 between the male die and the female die of the mold 2. The cover assembly 4 is passively unfolded, and the cover assembly 4 is gradually covered on the mold 2 to form a closed spraying cavity;

[0080] S4, the cleaning assembly 5 is started: the cleaning assembly 5 is started, the bidirectional air pump supplies air to the second variable diameter pipe 56 through the second connecting pipe 58, the air flow enters the first variable diameter pipe 55, the vertical pipe 54 through the air flow control piece 57, and finally the high-speed air flow is sprayed out from the air nozzle 51 through the first connecting pipe 52, and the high-speed air flow cleans the surface of the male die and the female die of the mold 2;

[0081] S5, the spraying assembly 6 works: the spraying assembly 6 is started, the release agent is transported to the adjustable nozzle 61 through the fourth connecting pipe 63 and the third connecting pipe 62, according to the specific shape of the cavity of the mold 2 and the spraying requirement, the spraying angle and flow of the adjustable nozzle 61 are adjusted, and the release agent is uniformly sprayed to the cavity of the mold 2;

[0082] The gas mist is limited in the spraying cavity because the cover assembly 4 is unfolded;

[0083] S6, the cleaning assembly 5 is switched to the suction mode: after the spraying is completed, the bidirectional air pump is switched to work in the direction, and the air is sucked from the second connecting pipe 58, under the action of suction, the release agent gas mist remaining in the spraying cavity is sucked into the pipeline of the cleaning assembly 5;

[0084] S7, the horizontal part 31 and the vertical part 32 of the lifting assembly 3 cooperate to move again, the cover assembly 4 is moved away from between the male die and the female die of the mold 2, the sliding sleeve 43 is inwards retracted along the middle housing 41 to be separated from the mold 2, the spraying cavity disappears, and is reset to the initial position, ready for the next die casting cycle.

[0085] The device solves the problems of incomplete cleaning, low spraying efficiency and serious pollution in traditional die casting through mechanical structure innovation and process flow optimization, is especially suitable for batch production of high-precision and complex structure castings, has obvious industrial application value, directly improves the strength, pressure resistance and fatigue life of automobile key parts (such as engine cylinder body and gearbox shell), reduces the risk of failure caused by defects, ensures driving safety, and provides a replicable and efficient die casting solution for automobile manufacturing.

[0086] The above only describes some exemplary embodiments of the present application in a descriptive manner, without doubt, for ordinary skilled in the art, the described embodiments can be modified in various ways without departing from the spirit and scope of the present application. Therefore, the above figures and description are illustrative in nature and should not be understood as limiting the scope of protection of the claims of the present application.

Claims

1. An oxygen-based pressure casting device based on casting processing, comprising a pressure casting machine (1), a mold (2) and a lifting assembly (3), characterized in that, Also include: Cover assembly (4), after the mold (2) is opened, the lifting assembly (3) moves the cover assembly (4), so that the cover assembly (4) is moved to the convex and concave mold between the mold (2), in the process, the cover assembly (4) receives the drive of the drive part (7), is passively unfolded and covers the mold (2), to form a spraying cavity; Cleaning assembly (5), the cleaning assembly (5) sprays high-speed airflow, which realizes the cleaning of the mold (2) by high-speed airflow; Spraying assembly (6) is used for spraying release agent to the mold (2) cavity, and the generated aerosol is limited in the spraying cavity; After spraying is completed, the cleaning assembly (5) sucks the aerosol in the spraying cavity, and the lifting assembly (3) moves up and synchronously drives the cover assembly (4) to retract to separate from the mold (2); The cover assembly (4) comprises a middle shell (41), a sliding sleeve (43) and a flow guide sleeve (44), the middle shell (41) is fixedly connected with the lower part of the lifting assembly (3), the sliding sleeve (43) is sleeved outside the middle shell (41), and the flow guide sleeve (44) is fixedly installed outside the sliding sleeve (43); An air flow channel (442) is arranged between the flow guide sleeve (44) and the sliding sleeve (43); The cleaning assembly (5) comprises air nozzles (51), a first connecting pipe (52), an inner collecting pipe (53), a vertical pipe (54), a first reducing pipe (55), a second reducing pipe (56), an airflow control member (57) and a second connecting pipe (58), the air nozzles (51) are connected to the inner collecting pipe (53) through the first connecting pipe (52), the lower part of the vertical pipe (54) is connected to the inner collecting pipe (53), the upper part of the vertical pipe (54) is connected to the first reducing pipe (55), the second reducing pipe (56) is arranged at the upper part of the first reducing pipe (55), the airflow control member (57) is arranged between the second reducing pipe (56) and the first reducing pipe (55), one end of the second connecting pipe (58) is connected to the second reducing pipe (56), and the other end of the second connecting pipe (58) is connected to a bidirectional air pump; The drive part (7) comprises a central shaft (71), a turnover sleeve (72), a pin column (73), an annular groove (74), a straight slot (75), a base (76), a spring (77) and a connecting member (78), the base (76) is fixedly installed on the middle shell (41), the central shaft (71) is rotatably connected to the base (76), the turnover sleeve (72) is fixedly installed on the central shaft (71), the annular groove (74) and the straight slot (75) are arranged on the turnover sleeve (72), the pin column (73) is fixedly connected to the lifting assembly (3), one end of the spring (77) is connected to the sliding sleeve (43), the other end of the spring (77) is connected to the central shaft (71), one end of the connecting member (78) is connected to the sliding sleeve (43), and the other end of the connecting member (78) is connected to the central shaft (71). The airflow control piece (57) comprises an isolation plate (571), a rotating shaft (572) and a guide vane (573), the isolation plate (571) is fixedly installed on the upper portion of the first variable-diameter pipe (55), the guide vane (573) is installed on the rotating shaft (572), a pair of rotating shafts (572) are rotatably connected on the isolation plate (571), and the included angle between a pair of guide vanes (573) is passively adjusted according to different airflow directions.

2. The oxygenated die casting apparatus based on casting processing according to claim 1, characterized by, The die casting machine (1) is used for controlling the opening and closing of the mold (2).

3. An oxygenated die casting apparatus based on casting processing according to claim 2, characterized in that, The lifting assembly (3) comprises a horizontal part (31) and a vertical part (32), and the position of the cover assembly (4) is adjusted through cooperation of the horizontal part (31) and the vertical part (32).

4. The oxygenated die casting apparatus based on casting processing according to claim 3, characterized by, The spraying assembly (6) comprises adjustable nozzles (61), a third connecting pipe (62) and a fourth connecting pipe (63), the fourth connecting pipe (63) is fixedly installed on the middle shell (41), and a plurality of adjustable nozzles (61) are connected to the fourth connecting pipe (63) through the third connecting pipe (62).

5. A die casting process based on foundry processing, which is implemented based on the die casting apparatus according to claim 4, characterized by, The method comprises the following steps: S1, the die casting machine (1) controls the mold (2) to close: start the die casting machine (1), the die casting machine (1) controls the male die and the female die of the mold (2) to close, forms a complete die casting cavity, fills oxygen into the mold (2) cavity, and then pours molten metal into the cavity, and completes the die casting under the pressure of the die casting machine (1); S2, the mold (2) opens: after die casting, the die casting machine (1) controls the mold (2) to open, the male die and the female die are separated, and the formed casting is exposed; Take out the casting: the casting is taken out from the mold (2) by manual or mechanical arm; S3, the lifting assembly (3) acts: the lifting assembly (3) starts, the horizontal part (31) and the vertical part (32) cooperate to move, and the position of the cover assembly (4) is adjusted; The horizontal part (31) drives the cover assembly (4) to move in the horizontal direction first, so that it is aligned with the area between the male die and the female die of the mold (2), then the vertical part (32) moves in the vertical direction, moves the cover assembly (4) to the male die and the female die of the mold (2) accurately, the cover assembly (4) is passively unfolded, the cover assembly (4) is gradually covered on the mold (2), and a closed spraying cavity is formed; S4, the cleaning assembly (5) starts: the cleaning assembly (5) is started, the bidirectional air pump supplies air to the second variable-diameter pipe (56) through the second connecting pipe (58), the airflow enters the first variable-diameter pipe (55) and the vertical pipe (54) through the airflow control piece (57), and finally the high-speed airflow is sprayed out from the air nozzle (51) through the first connecting pipe (52), the high-speed airflow cleans the surfaces of the male die and the female die of the mold (2); S5, the spraying assembly (6) works: the spraying assembly (6) is started, the release agent is conveyed to the adjustable nozzle (61) through the fourth connecting pipe (63) and the third connecting pipe (62), the spraying angle and flow of the adjustable nozzle (61) are adjusted according to the specific shape of the mold (2) cavity and spraying requirements, and the release agent is uniformly sprayed to the mold (2) cavity; Aerosol restriction: due to the cover assembly (4) to form a spraying cavity, the spraying process generated aerosol is limited in the cavity; S6, the cleaning assembly (5) switches to suction mode: after spraying, the bidirectional air pump switches the working direction, and changes to suction gas from the second connecting pipe (58). Under the action of suction, the residual release agent aerosol in the spraying cavity is sucked into the pipeline of the cleaning assembly (5); S7, the horizontal part (31) and the vertical part (32) of the lifting assembly (3) cooperate again to move the cover assembly (4) away from the mold (2) between the male mold and the female mold, and the sliding sleeve (43) is retracted inward along the middle shell (41) to separate from the mold (2), the spraying cavity disappears, and returns to the initial position, ready for the next die casting cycle.

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