CN114653901A - Flow coating device and flow coating method for automatic production line of magnesium alloy cabin casting mold - Google Patents

Abstract

The invention discloses a flow coating device and a flow coating method for an automatic production line of a magnesium alloy cabin casting mold, belonging to the technical field of casting flow coating, the scheme utilizes a feeding diaphragm pump to convey coating to an automatic flow coating tank under the action of gas driving, a mud core type spray head and a sand box type spray head are matched to carry out flow coating on different outer molds and mud cores, the flow coating effect is improved, a pool body is utilized to collect dropped coating, a backflow diaphragm pump is matched to convey the coating collected by the pool body to a coating preparation assembly through a backflow pipe of the flow coating tank under the action of gas driving, the coating can be recycled, the use of the coating is effectively saved, meanwhile, a casting mold grabbing robot can also seamlessly connect the flow coated casting mold to a surface drying process, the originally independent two production processes are orderly fused, the working beat of coating the casting mold and the surface drying is accelerated, and the coating consistency of the coating is improved, the using amount of the coating is saved.

Description

Flow coating device and flow coating method for automatic production line of magnesium alloy cabin casting mold

Technical Field

The invention relates to the technical field of casting flow coating, in particular to a flow coating device and a flow coating method for an automatic production line of a magnesium alloy cabin casting mold.

Background

The current economic development has the requirements on various aspects such as high quality, high efficiency, low consumption, greenness and the like for castings, and the light weight, the integration and the precision become the important development direction of the casting industry in the new period. Therefore, complex thin-wall light alloy precision castings, particularly complex thin-wall magnesium alloy castings, are vigorously developed in all countries.

Flow coating is a method for applying casting coating with high efficiency, which utilizes a coating pump to pour the coating on the surface of a sand mold or a sand core at a certain pressure and flow rate, so that the coating can be quickly and uniformly coated on the whole surface of the sand mold or the sand core. Compared with manual brush coating, flow coating has the advantages of high coating efficiency, small artificial influence and good coating quality consistency, and can meet the requirements of automatic casting technology.

However, the traditional flow coating equipment generally adopts a manual hand-held flow coating gun to spray coating, and is assisted by a turnover mechanism or a travelling crane to turn over a sand mold, so that the working efficiency is low, the traditional flow coating equipment can only be used as single equipment, the automatic continuous production efficiency of a molding line is seriously influenced, and meanwhile, the accurate and stable control requirement of a casting process cannot be met.

Therefore, the flow coating device and the flow coating method for the automatic production line of the magnesium alloy cabin casting mold are provided to effectively solve the problems in the prior art.

Disclosure of Invention

1. Technical problem to be solved

Aiming at the problems in the prior art, the invention aims to provide a flow coating device and a flow coating method for an automatic production line of a magnesium alloy cabin casting mold, wherein a feeding diaphragm pump is used for conveying a coating to an automatic flow coating tank under the action of gas driving, a mud core type spray head and a sand box type spray head are matched for flow coating different outer molds and mud cores, so that the flow coating effect is improved, a pool body is used for collecting the dropped coating, a backflow diaphragm pump is matched for conveying the coating collected by the pool body to a coating preparation assembly through a backflow pipe of the flow coating tank under the action of gas driving, the coating can be recycled, the use of the coating is effectively saved, and a casting mold grabbing robot can also be used for seamlessly connecting the flow coated casting mold to a surface drying process, so that the originally two independent production processes are sequentially fused, the working cycle of casting mold coating and surface drying is accelerated, and the coating consistency of the coating is improved, the using amount of the coating is saved.

2. Technical scheme

In order to solve the above problems, the present invention adopts the following technical solutions.

A flow coating device of an automatic production line of a magnesium alloy cabin casting mold comprises an automatic flow coating tank, a coating preparation assembly and an electrical control system, wherein the automatic flow coating tank is connected with the coating preparation assembly through a hose, the electrical control system is connected with the automatic flow coating tank and the coating preparation assembly through a pipeline, the automatic flow coating tank comprises a coating liquid receiving disc below the automatic flow coating tank, a tank body is arranged above the coating liquid receiving disc, a stainless steel basket is arranged inside the tank body, a flow coating assembly is arranged on the inner side of the tank body and comprises a liquid supply pipe positioned on the rear wall of the tank body, the upper end of the liquid supply pipe is connected with a mud core type spray head and a sand box type spray head through a pneumatic angle seat valve, a pressure relief backflow pipe is arranged at one end, close to the pneumatic angle seat valve, of the mud core type spray head, the upper end of the pressure relief backflow pipe is communicated with the mud core type spray head and the sand box type spray head, a backflow diaphragm pump is arranged at the upper end of the coating liquid receiving disc, positioned on the right side of the tank body, and the input end of the backflow diaphragm pump is communicated with the inside of the tank body through a suction pipe, the coating preparation component comprises a base at the bottom, a stirring barrel is arranged above the base, a sealing cover is arranged at the upper end of the stirring barrel, a backflow pipe and a stirring motor are arranged at the upper end of the sealing cover, a stirrer penetrating through the sealing cover and extending to the inside of the stirring barrel is arranged at the output end of the stirring motor, the backflow pipe is connected to the output end of the backflow diaphragm pump through a pipeline II, a feeding diaphragm pump is arranged at the upper end of the base, the input end of the feeding diaphragm pump is communicated to the bottom end of the stirring barrel through a pipeline I, an electrical control system comprises an external electrical box body, a main gas pipe is arranged on the outer side of the electrical box body, a slide valve is arranged inside the electrical box body, the main gas pipe is connected to the slide valve, the slide valve is connected with an oil atomizer pressure reducing valve and a filtering pressure reducing valve, the main gas pipe is divided through a double-pipe universal elbow, the double-pipe universal elbow is mutually connected with the main gas pipe through the pressure reducing valve, the three-way electromagnetic valve is connected with the three-way electromagnetic valve, a manual switching valve is arranged inside the electrical box body, the manual switching valve is connected to the return diaphragm pump and the feed diaphragm pump.

Furthermore, a splash guard is arranged above the tank body and connected to the tank body through a support, and the splash guard is of a funnel shape with a downward opening.

Further, the left side and the right side of the upper end of the tank body are both provided with splash plates, and the inner walls of the splash plates are polished to obtain smooth surfaces.

Further, sealed upper end of covering is equipped with the material level detection switch, and material level detection switch sense terminal runs through sealed lid and extends to inside the agitator.

Further, the inside stainless steel basket that is equipped with of cell body, stainless steel basket surface obtains smooth surface through the processing of polishing.

Further, the agitator includes a plurality of stirring leaves that pivot and lower extreme set up, stirs further, is provided with the attenuator on the feed diaphragm pump, and the anticorrosive coating has been laid to the attenuator outer wall, and the feed diaphragm pump outside is equipped with the dust cover.

Furthermore, the bottom wall of the stirring barrel is of a funnel shape with an upward opening.

Furthermore, a manual ball valve is arranged on the first pipeline.

The specific operation steps are as follows:

s1, preparation: firstly, workers need to detect the tightness of each pipeline, then paint is poured into the stirring barrel, a stirring motor is controlled to drive a stirrer to rotate, the paint is uniformly stirred, and finally, a casting mold grabbing robot is used for grabbing an outer mold or a mud core of a magnesium alloy cabin body to be flow-coated and placing the outer mold or the mud core into the tank body.

S2, low-depth external mold flow coating: when the low-depth outer mold is subjected to flow coating, the track motion is only carried out in an XY plane, when the low-depth outer mold sand box is subjected to flow coating and moves to a sand box type spray head, the automatic flow coating pool receives a sand box flow coating starting signal of the casting mold grabbing robot, the three-way electromagnetic valve controls the pneumatic angle seat valve to be opened, the coating flows out from the sand box type spray head through the liquid supply pipe, and the sand box of the outer mold moves along a cross track; and after the track operation is finished, the casting mold grabbing robot transmits a flow coating completion signal to the automatic flow coating pool, the three-way electromagnetic valve controls the pneumatic angle seat valve to be closed, and the coating stops flowing out.

S3, deep cylinder type external mold flow coating: when the deep cylinder type outer mold is in flow coating, the deep cylinder type outer mold moves along a track on an XY plane and reciprocates along a Z-axis direction at a fixed position, when the deep cylinder type outer mold moves to a sand box type spray head, an automatic flow coating pool receives a sand box flow coating starting signal of a casting mold grabbing robot, a three-way electromagnetic valve controls a pneumatic angle seat valve to be opened, coating flows out from the sand box type spray head through a liquid supply pipe, the outer mold sand box moves along a circular track on the XY plane, and the flow coating starting signal is closed after the circular track is finished; and moving the vertical cylinder to the position below the sand box type spray head, reopening the flow coating starting signal, performing 2-3 times of reciprocating motion in the Z-axis direction, and closing the flow coating starting signal in the position switching process of the vertical cylinder.

S4, core flow coating: when the sand core moves to the position below a sand core type spray head, the automatic flow coating pool receives a sand core flow coating starting signal of a casting grabbing robot, the three-way electromagnetic valve controls the pneumatic angle seat valve to be opened, the coating flows out of the sand core type spray head through the liquid supply pipe, the sand core starts to rotate clockwise and reciprocates along the Y axis direction on the YZ plane, the Y axis reciprocating motion is stopped after the sand core rotates 360 degrees, and the sand core flow coating starting signal is closed.

3. Advantageous effects

Compared with the prior art, the invention has the advantages that:

(1) this scheme is carried coating to automatic flow coating pond through utilizing the feed diaphragm pump under gas drive effect, cooperation mud core type shower nozzle and sand box type shower nozzle carry out the flow coating to different external molds and mud core, the effect of flow coating has been improved, utilize the cell body to collect the coating of drippage, cooperation backward flow diaphragm pump passes through the flow coating pond back flow with the coating that the cell body was collected under gas drive effect and carries coating preparation subassembly, make coating can cyclic utilization, the use of coating has effectively been practiced thrift, snatch the robot simultaneously through the casting mould and can also be connected to the surface dry process with the casting mould seamless that has flowed coated, make two independent production processes fuse in order originally, casting mould coating and the work beat of surface dry have been accelerated, coating's uniformity has been improved, the use amount of coating has been practiced thrift.

(2) Cell body top in this scheme is equipped with the splashproof cover, and the splashproof cover passes through leg joint on the cell body, and the splashproof cover is the funnel type that the opening is decurrent, utilizes the splashproof cover can effectively reduce to flow and scribbles the sputter of in-process coating, effectively avoids polluting the external environment, utilizes the splashproof cover of funnel type can make the sputter coating drip to the inside cyclic utilization again of cell body, has practiced thrift coating.

(3) Cell body upper end left and right sides in this scheme all is provided with the splash shield, and the splash shield inner wall obtains smooth surface through the processing of polishing, and glossy splash shield can effectively prevent coating sputtering to external environment and make coating along smooth surface landing to the cell body in for coating can cyclic utilization, has further practiced thrift coating.

(4) Sealed upper end in this scheme is equipped with the material level detection switch, and inside material level detection switch sense terminal ran through sealed lid and extended to the agitator, utilize material level detection switch can in time detect what of coating, be convenient for remind the staff in time to add coating, effectively avoided because the coating disappearance leads to the flow to scribble the effect reduction.

(5) Inside the being equipped with stainless steel basket of cell body in this scheme, stainless steel basket surface obtains smooth surface through the processing of polishing, and the stainless steel basket of can hinder partial impurity to get into the circulating line again, effectively avoids the circulating line to be blockked up by impurity, has improved the device's practicality.

(5) The agitator in this scheme includes a plurality of stirring leaves that pivot and lower extreme set up, and the stirring leaf adopts stainless steel material to make, utilizes a plurality of stirring leaves can improve stirring efficiency for coating more even has effectively improved the quality of flow coating.

(6) Be provided with the attenuator on the feed diaphragm pump in this scheme, the anticorrosive coating has been laid to the attenuator outer wall, and the feed diaphragm pump outside is equipped with the dust cover, utilizes the attenuator can reduce vibrations and the noise that the feed diaphragm pump produced at work, has reduced the vibrations that transmit to the subassembly of scribbling, has further improved the quality of scribbling.

(7) The agitator diapire in this scheme is the ascending funnel type of opening, and the agitator diapire of funnel type can be so that the coating free fall of stirring, has practiced thrift the energy.

Drawings

FIG. 1 is a schematic view of the main structure of the present invention;

FIG. 2 is a schematic front view of the automatic flow coating tank of the present invention;

FIG. 3 is a schematic view of the back side structure of the automatic flow coating tank of the present invention;

FIG. 4 is a schematic view of the backside structure of the coating preparation assembly of the present invention;

FIG. 5 is a schematic front view of the paint preparation assembly of the present invention;

FIG. 6 is an exploded view of the paint preparation assembly of the present invention;

FIG. 7 is a schematic view of the combination of the stirring motor and the stirrer according to the present invention;

FIG. 8 is a schematic view of the configuration of an electro-pneumatic control system of the present invention;

FIG. 9 is a schematic structural view of the present invention in a state of flow coating to the outer mold;

FIG. 10 is a schematic structural view of the present invention in a state of flow coating a core.

The numbering in the figures illustrates:

1 automatic flow coating pool, 11 splash guard, 12 flow coating component, 121 sand core type spray head, 122 sand box type spray head, 123 pressure relief return pipe, 124 liquid supply pipe, 125 pneumatic angle seat valve, 13 pool body, 131 stainless steel net basket, 132 splash guard, 14 paint liquid receiving disc, 15 return diaphragm pump, 2 paint preparation component, 21 stirring motor, 211 stirrer, 22 feed diaphragm pump, 221 damper, 23 return pipe, 24 material level detection switch, 25 manual ball valve, 26 stirring barrel, 27 base, 28 dust cover, 3 electric control system, 31 slide valve, 32 oil mist device pressure reducing valve, 33 filter pressure reducing valve, 34 pressure reducing valve, 35 three-way electromagnetic valve, 36 manual switching valve and 37 electric box body.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the connection can be direct connection or indirect connection through an intermediate medium, and can be communication inside the model adapting element. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1:

referring to fig. 1-8, an automatic production line flow coating apparatus for magnesium alloy cabin casting mold comprises an automatic flow coating tank 1, a coating preparation assembly 2 and an electrical control system 3, wherein the automatic flow coating tank 1 is connected to the coating preparation assembly 2 through a hose, the electrical control system 3 is connected to the automatic flow coating tank 1 and the coating preparation assembly 2 through a pipeline, the automatic flow coating tank 1 comprises a coating liquid receiving tray 14 below, a tank body 13 is arranged above the coating liquid receiving tray 14, a stainless steel basket 131 is arranged inside the tank body 13, a flow coating assembly 12 is arranged inside the tank body 13, the flow coating assembly 12 comprises a liquid supply pipe 124 positioned on the rear wall of the tank body 13, the upper end of the liquid supply pipe 124 is connected with a mud core type nozzle 121 and a sand box type nozzle 122 through a pneumatic angle seat valve 125, a pressure relief return pipe 123 is arranged at one end of the mud core type nozzle 121 close to the pneumatic angle seat valve 125, the upper end of the pressure relief return pipe 123 is communicated with the mud core type nozzle 121 and the sand box type nozzle 122, the upper end of the coating liquid receiving disc 14 is positioned on the right side of the tank body 13 and is provided with a backflow diaphragm pump 15, the input end of the backflow diaphragm pump 15 is communicated to the inside of the tank body 13 through a suction pipe, the coating preparation assembly 2 comprises a base 27 at the bottom, a stirring barrel 26 is arranged above the base 27, the upper end of the stirring barrel 26 is provided with a sealing cover, the upper end of the sealing cover is provided with a backflow pipe 23 and a stirring motor 21, the output end of the stirring motor 21 is provided with a stirrer 211 penetrating through the sealing cover and extending to the inside of the stirring barrel 26, the backflow pipe 23 is connected to the output end of the backflow diaphragm pump 15 through a pipeline II, the upper end of the base 27 is provided with a feeding diaphragm pump 22, the input end of the feeding diaphragm pump 22 is communicated to the bottom end of the stirring barrel 26 through a pipeline I, the electric control system 3 comprises an external electric box body 37, the outer side of the electric box body 37 is provided with a main gas pipe, the inside of the electric box body 37 is provided with a slide valve 31, the main gas pipe is connected to the slide valve 31, the slide valve 31 is connected with an oil mist reducing valve 32 and a filtering reducing valve 33, the main gas pipe is divided by a double-pipe universal elbow, the double-pipe universal elbow and the main gas pipe are connected with each other through a pressure reducing valve 34, the pressure reducing valve 34 is connected with a three-way electromagnetic valve 35, a manual switching valve 36 is arranged inside an electric box body 37, and the manual switching valve 36 is connected with the backflow diaphragm pump 15 and the feeding diaphragm pump 22.

Referring to fig. 2, a splash guard 11 is arranged above a tank body 13, the splash guard 11 is connected to the tank body 13 through a bracket, the splash guard 11 is of a funnel shape with a downward opening, sputtering of paint in a flow coating process can be effectively reduced by using the splash guard 11, external environment pollution is effectively avoided, the sputtered paint can be dripped into the tank body 13 by using the funnel-shaped splash guard 11 to be recycled, and the paint is saved.

Referring to fig. 2, a stainless steel basket 131 is disposed inside the tank body 13, the surface of the stainless steel basket 131 is polished to obtain a smooth surface, and the stainless steel basket 131 can prevent part of impurities from entering the circulation pipeline again, so that the circulation pipeline is effectively prevented from being blocked by the impurities, and the practicability of the device is improved.

Referring to fig. 3, the left and right sides of the upper end of the tank body 13 are provided with the anti-splash plates 132, the inner walls of the anti-splash plates 132 are polished to obtain a smooth surface, and the smooth anti-splash plates 132 can effectively prevent the paint from splashing to the external environment and make the paint slide into the tank body 13 along the smooth surface, so that the paint can be recycled, and the paint is further saved.

Referring to fig. 5, a material level detection switch 24 is arranged at the upper end of the sealing cover, the detection end of the material level detection switch 24 penetrates through the sealing cover and extends into the stirring barrel 26, the amount of the coating can be detected in time by using the material level detection switch 24, so that the worker can be reminded to add the coating in time, and the reduction of the flow coating effect caused by the coating loss is effectively avoided.

Referring to fig. 7, the stirrer 211 includes a rotating shaft and a plurality of stirring blades disposed at a lower end of the rotating shaft, the stirring blades are made of stainless steel, and the stirring efficiency can be improved by the plurality of stirring blades, so that the coating is more uniform, and the flow coating quality is effectively improved.

Referring to fig. 5, the damper 221 is disposed on the feeding diaphragm pump 22, the outer wall of the damper 221 is coated with an anti-corrosion layer, and the dust cover 28 is disposed outside the feeding diaphragm pump 22, so that the damper 221 can reduce vibration and noise generated during operation of the feeding diaphragm pump 22, reduce vibration transmitted to the flow coating assembly 12, and further improve the flow coating quality.

The bottom wall of the stirring barrel 26 is funnel-shaped with an upward opening, and the bottom wall of the funnel-shaped stirring barrel 26 can enable the paint which is uniformly stirred to freely fall, so that the energy is saved.

It is to be added here that the first pipe is provided with a manual ball valve 25.

A flow coating method for an automatic production line of a magnesium alloy cabin casting mold comprises a casting mold grabbing robot, and comprises the following specific operation steps:

s1, preparation: firstly, workers need to detect the tightness of each pipeline, then paint is poured into the stirring barrel 26, the stirring motor 21 is controlled to drive the stirrer 211 to rotate, the paint is uniformly stirred, and finally, the outer die or the mud core of the magnesium alloy cabin body needing flow coating is grabbed by the cast grabbing robot and is placed in the pool body 13.

S2, low-depth external mold flow coating: referring to fig. 9, when the low-depth external mold is flow coated, the low-depth external mold only moves in the XY plane, when the low-depth external mold flask is flow coated and moves to the flask type nozzle 122, the automatic flow coating pool 1 receives a flask flow coating start signal of the mold gripping robot, the three-way electromagnetic valve 35 controls the pneumatic angle seat valve 125 to open, the coating flows out from the flask type nozzle 122 through the liquid supply pipe 124, and the external mold flask moves along the cross track; after the track operation is finished, the casting mold grabbing robot transmits a flow coating completion signal to the automatic flow coating pool 1, the three-way electromagnetic valve 35 controls the pneumatic angle seat valve 125 to be closed, and the coating stops flowing out.

S3, deep cylinder type external mold flow coating: when the deep cylinder type outer mold is in flow coating, the deep cylinder type outer mold moves along a track on an XY plane and reciprocates along a Z-axis direction at a fixed position, when the deep cylinder type outer mold moves to a sand box type spray head 122, the automatic flow coating pool 1 receives a sand box flow coating starting signal of a casting mold grabbing robot, the three-way electromagnetic valve 35 controls the pneumatic angle seat valve 125 to be opened, the coating flows out from the sand box type spray head 122 through the liquid supply pipe 124, the sand box of the outer mold moves along a circular track on the XY plane, and the flow coating starting signal is closed after the circular track is finished; and moving the vertical cylinder to the position below the sand box type spray head 122, reopening the flow coating starting signal, performing 2-3 times of reciprocating motion in the Z-axis direction, and closing the flow coating starting signal in the position switching process of the vertical cylinder.

S4, core flow coating: referring to fig. 10, during core flow coating, the core reciprocates along the Y-axis direction on the YZ plane, and simultaneously the core rotates, when the core moves to the position below the core nozzle 121, the automatic flow coating tank 1 receives a core flow coating start signal of a mold grabbing robot, the three-way electromagnetic valve 35 controls the pneumatic angle seat valve 125 to open, the coating flows out from the core nozzle 121 through the liquid supply pipe 124, the core starts to rotate clockwise and reciprocates along the Y-axis direction on the YZ plane, the Y-axis reciprocation is stopped after the core rotates 360 degrees, and the core flow coating start signal is turned off.

When using the device, carry coating to automatic flow coating pond 1 through utilizing feed diaphragm pump 22 under the gas drive effect, cooperation mud core type shower nozzle 121 and sand box type shower nozzle 122 flow coating different external molds and mud cores, the effect of flow coating has been improved, utilize cell body 13 to collect the coating of drippage, cooperation backward flow diaphragm pump 15 passes through back flow 23 with the coating that cell body 13 collected under the gas drive effect and carries to agitator 26, make coating can cyclic utilization, the use of coating has effectively been practiced thrift.

The foregoing is only a preferred embodiment of the present invention; the scope of the invention is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.

Claims (10)

1. The flow coating device for the automatic production line of the magnesium alloy cabin casting mold comprises an automatic flow coating pool (1), a coating preparation assembly (2) and an electrical control system (3), wherein the automatic flow coating pool (1) is connected to the coating preparation assembly (2) through a hose, the electrical control system (3) is connected to the automatic flow coating pool (1) and the coating preparation assembly (2) through pipelines, and the flow coating device is characterized in that: the automatic flow coating tank (1) comprises a coating liquid receiving disc (14) at the lower part, a tank body (13) is arranged above the coating liquid receiving disc (14), a stainless steel basket (131) is arranged in the tank body (13), a flow coating component (12) is arranged on the inner side of the tank body (13), the flow coating assembly (12) comprises a liquid supply pipe (124) positioned on the rear wall of the tank body (13), the upper end of the liquid supply pipe (124) is connected with a sand core type spray head (121) and a sand box type spray head (122) through a pneumatic angle seat valve (125), one end of the sand core type spray head (121) close to the pneumatic angle seat valve (125) is provided with a pressure relief return pipe (123), the upper end of the pressure relief return pipe (123) is communicated with the mud core type spray head (121) and the sand box type spray head (122), a reflux diaphragm pump (15) is arranged at the upper end of the coating liquid receiving disc (14) and positioned at the right side of the tank body (13), the input end of the reflux diaphragm pump (15) is communicated to the inside of the tank body (13) through a suction pipe;

the coating preparation assembly (2) comprises a base (27) at the bottom, a stirring barrel (26) is arranged above the base (27), a sealing cover is arranged at the upper end of the stirring barrel (26), a return pipe (23) and a stirring motor (21) are arranged at the upper end of the sealing cover, an agitator (211) which penetrates through the sealing cover and extends to the inside of the stirring barrel (26) is arranged at the output end of the stirring motor (21), the return pipe (23) is connected to the output end of a return diaphragm pump (15) through a second pipeline, a feeding diaphragm pump (22) is arranged at the upper end of the base (27), the input end of the feeding diaphragm pump (22) is communicated to the bottom end of the stirring barrel (26) through a first pipeline, the electrical control system (3) comprises an external electrical box body (37), a main air pipe is arranged on the outer side of the electrical box body (37), and a slide valve (31) is arranged inside the electrical box body (37), the main gas pipe is connected with a slide valve (31), the slide valve (31) is connected with a sprayer pressure reducing valve (32) and a filtering pressure reducing valve (33), the main gas pipe is divided by a double-pipe universal elbow, the double-pipe universal elbow and the main gas pipe are connected with each other through the pressure reducing valve (34), the pressure reducing valve (34) is connected with a three-way electromagnetic valve (35), a manual switching valve (36) is arranged inside an electric box body (37), and the manual switching valve (36) is connected with a backflow diaphragm pump (15) and a feeding diaphragm pump (22).

2. The flow coating device of the automatic production line of the magnesium alloy cabin casting mold according to claim 1, characterized in that: cell body (13) top is equipped with splash guard (11), splash guard (11) pass through leg joint on cell body (13), splash guard (11) are the downward funnel type of opening.

3. The flow coating device of the automatic production line for the magnesium alloy cabin body casting mold according to claim 1, characterized in that: the cell body (13) upper end left and right sides all is provided with splash shield (132), splash shield (132) inner wall obtains smooth surface through the processing of polishing.

4. The flow coating device of the automatic production line of the magnesium alloy cabin casting mold according to claim 1, characterized in that: sealed lid upper end is equipped with material level detection switch (24), material level detection switch (24) sense terminal runs through sealed lid and extends to inside agitator (26).

5. The flow coating device of the automatic production line of the magnesium alloy cabin casting mold according to claim 1, characterized in that: the pool body (13) is internally provided with a stainless steel basket (131), and the surface of the stainless steel basket (131) is polished to obtain a smooth surface.

6. The flow coating device of the automatic production line of the magnesium alloy cabin casting mold according to claim 1, characterized in that: the stirrer (211) comprises a rotating shaft and a plurality of stirring blades arranged at the lower end of the rotating shaft, and the stirring blades are made of stainless steel materials.

7. The flow coating device of the automatic production line of the magnesium alloy cabin casting mold according to claim 1, characterized in that: the feeding diaphragm pump (22) is provided with a damper (221), the outer wall of the damper (221) is coated with an anticorrosive layer, and the outer side of the feeding diaphragm pump (22) is provided with a dustproof cover (28).

8. The flow coating device of the automatic production line of the magnesium alloy cabin casting mold according to claim 1, characterized in that: the bottom wall of the stirring barrel (26) is of a funnel shape with an upward opening.

9. The flow coating device of the automatic production line for the magnesium alloy cabin body casting mold according to claim 1, characterized in that: and a manual ball valve (25) is arranged on the first pipeline.

10. The flow coating method for the automatic production line of the magnesium alloy cabin body casting mold according to the claims 1 to 9, which is characterized by comprising a casting mold grabbing robot, and the specific operation steps are as follows:

s1, preparation: firstly, workers need to detect the sealing performance of each pipeline, then paint is poured into the stirring barrel (26), a stirring motor (21) is controlled to drive a stirrer (211) to rotate, the paint is uniformly stirred, and finally a casting mold grabbing robot is used for grabbing an outer mold or a mud core of a magnesium alloy cabin body to be flow-coated and placing the outer mold or the mud core into a pool body (13);

s2, low-depth external mold flow coating: when the low-depth external mold is subjected to flow coating, the low-depth external mold only moves in an XY plane, when the low-depth external mold sand box is subjected to flow coating and moves to a sand box type spray head (122), the automatic flow coating pool (1) receives a sand box flow coating starting signal of a casting mold grabbing robot, the three-way electromagnetic valve (35) controls the opening of the pneumatic angle seat valve (125), the coating flows out of the sand box type spray head (122) through the liquid supply pipe (124), and the external mold sand box moves along a cross track; after the track operation is finished, the casting mold grabbing robot transmits a flow coating finishing signal to the automatic flow coating pool (1), the three-way electromagnetic valve (35) controls the pneumatic angle seat valve (125) to be closed, and the coating stops flowing out;

s3, deep cylinder type external mold flow coating: when the deep cylinder type outer mold is in flow coating, the deep cylinder type outer mold does not only move along a track on an XY plane, but also reciprocates along a Z-axis direction at a fixed position, when the deep cylinder type outer mold moves to a sand box type spray head (122), an automatic flow coating pool (1) receives a sand box flow coating starting signal of a casting mold grabbing robot, a three-way electromagnetic valve (35) controls a pneumatic angle seat valve (125) to be opened, paint flows out from the sand box type spray head (122) through a liquid supply pipe (124), the outer mold sand box moves along a circular track on the XY plane, and the flow coating starting signal is closed after the circular track is finished; moving the vertical cylinder to the position below a sand box type spray head (122), reopening a flow coating starting signal, performing reciprocating motion for 2-3 times in the Z-axis direction, and closing the flow coating starting signal in the position switching process of the vertical cylinder;

s4, core flow coating: when the sand core flows and coats, the sand core reciprocates along the Y-axis direction on a YZ plane, and simultaneously the sand core rotates, when the sand core moves to the position below a sand core type spray head (121), the automatic flow coating pool (1) receives a sand core flow coating starting signal of a casting mold grabbing robot, the three-way electromagnetic valve (35) controls the pneumatic angle seat valve (125) to be opened, the coating flows out of the sand core type spray head (121) through a liquid supply pipe (124), the sand core starts to rotate clockwise and reciprocates along the Y-axis direction on the YZ plane, the Y-axis reciprocating motion is stopped after the sand core rotates 360 degrees, and the sand core flow coating starting signal is closed.

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