CN113510021A

CN113510021A - Automatic mold spraying machine for aluminum alloy casting mold and using method thereof

Info

Publication number: CN113510021A
Application number: CN202110708347.1A
Authority: CN
Inventors: 潘德强; 王帆
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-06-25
Filing date: 2021-06-25
Publication date: 2021-10-19

Abstract

The invention discloses an automatic die-spraying machine for an aluminum alloy casting die and a using method thereof, relating to the technical field of die-spraying machines; in order to solve the problem that the materials are inconvenient to move; the device comprises a shell, wherein a working platform is arranged on the outer wall of the top of the shell, a feeding and discharging mechanism is arranged on the outer wall of the top of the working platform, the outer wall of the top of the working platform is rotatably connected with a rotating platform, a fixing plate is arranged on the outer wall of the top of the rotating platform, a clamping mechanism is arranged on the inner wall of one side of the fixing plate, and an arc-shaped sliding rail is fixed on the outer wall of the top of the shell through a support rod; the use method of the device comprises the following steps: feeding materials; fixing the materials; driving the material to rotate; and (5) blanking after paint spraying. According to the invention, the working platform is arranged, the feeding and discharging mechanism is arranged on the outer wall of the top of the working platform, then the clamping mechanism fixes the material, the connecting mechanism is matched to rotate along the arc-shaped sliding rail, the material is rotated to the position below the paint spraying mechanism to be sprayed with paint, and finally the material is discharged at the position rotated to the discharging platform.

Description

Automatic mold spraying machine for aluminum alloy casting mold and using method thereof

Technical Field

The invention relates to the technical field of die spraying machines, in particular to an automatic die spraying machine for an aluminum alloy casting die and a using method thereof.

Background

In the prior art, aluminum alloy is a non-ferrous metal structural material which is most widely applied in industry and has been widely applied in aviation, aerospace, automobile, mechanical manufacturing, ships and chemical industry; the rapid development of industrial economy has increased the demand on aluminum alloy welded structural parts, so that the weldability research of aluminum alloy is also deepened; in the production and processing process of the aluminum alloy section, the surface of the aluminum alloy section needs to be sprayed with paint, so that the effects of corrosion resistance and attractiveness are achieved, but the paint sprayed by the existing paint spraying device is not uniform and fine, and the uniform and quick paint spraying effect on the surface of the aluminum alloy section cannot be achieved.

Through the retrieval, chinese patent application No. 20202139051.3 discloses an aluminum alloy machined part paint spraying apparatus, including the box, the first motor of left side fixedly connected with of box inner chamber bottom, the output fixedly connected with action wheel of first motor, the surperficial swing joint of action wheel has the belt, and the one end swing joint that the action wheel was kept away from to the belt has from the driving wheel, from the inner chamber fixedly connected with bull stick of driving wheel, the bottom fixed connection of bearing and box inner chamber is passed through to the one end of bull stick. The painting device for the aluminum alloy workpieces in the patent has the following defects: the splint remove and carry out the centre gripping fixed to the material, but at the fixed back of centre gripping, the material can't remove and rotate, is unfavorable for the spraying paint at the back, when taking out, needs the manual work to take out.

Disclosure of Invention

The invention aims to solve the defects in the prior art and provides an automatic injection molding machine for an aluminum alloy casting mold and an operation method thereof.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides an aluminum alloy casting mould is with automatic mold spraying machine, which comprises a housin, casing top outer wall is provided with work platform, work platform top outer wall is provided with unloading mechanism, work platform top outer wall rotates and is connected with the rotation platform, rotation platform top outer wall is provided with the fixed plate, fixed plate one side inner wall is provided with fixture, casing top outer wall is fixed with the arc slide rail through branch, arc slide rail one side inner wall sliding connection has the sliding block, sliding block one side outer wall is provided with coupling mechanism, fixture rotates and connects on coupling mechanism, work platform one side outer wall is provided with the tripod, tripod bottom outer wall sets up the hydraulic stem, the flexible end of hydraulic stem is fixed with the protection casing through the link, protection casing bottom inner wall is provided with the mechanism that sprays paint.

Preferably: the clamping mechanism comprises a fixing clamp, two fixing clamp plates, two connecting shafts and two-way cylinders, the two connecting shafts are arranged on the outer walls of the two sides of the fixing clamp respectively, the two-way cylinders are arranged on the inner walls of the two sides of the fixing clamp respectively, the two fixing clamp plates are arranged on the telescopic ends of the two-way cylinders respectively, one connecting shaft is connected to the inner wall of one side of a fixing plate in a rotating mode, the outer wall of the top of the fixing plate is provided with a second motor, and an output shaft of the second motor is connected with the connecting shafts through a coupler.

Further: the connecting mechanism comprises a connecting sleeve, two limiting frames, four springs, four connecting rods and two fixing frames, the two fixing frames are respectively arranged on two sides of the top and the bottom outer wall of the sliding block, the four connecting rods are respectively connected to the inner walls of the two sides of the four fixing frames in a sliding mode, and the four connecting rods are respectively connected with the two limiting frames.

Further preferred is: the four springs are respectively arranged on the outer walls of two sides of the four fixing frames, the four springs are respectively connected with the four connecting rods, the connecting sleeve is arranged on the outer wall of one side of the sliding block, one connecting shaft is rotatably connected to the inner wall of the connecting sleeve, the outer wall of the bottom of the working platform is provided with a third motor, and an output shaft of the third motor is connected with the rotating platform through a coupler.

As a preferable aspect of the present invention: go up unloading mechanism includes two motors one, material loading platform, two lead screws one and unloading platform, and the sliding tray has been seted up respectively to work platform top outer wall both sides, and two lead screws rotate respectively and connect in sliding tray one side inner wall, material loading platform and unloading platform be sliding connection in sliding tray one side inner wall respectively.

Further preferred as the invention: the feeding platform and the discharging platform are respectively connected to the outer walls of the two first screw rods through threads, the two first motors are respectively arranged on the outer wall of one side of the sliding groove, output shafts of the two first motors are respectively connected with the two first screw rods through couplers, and the feeding platform and the discharging platform are lifting platforms.

As a still further scheme of the invention: the mechanism of spraying paint includes motor four, lead screw two, the frame of spraying paint, two above paint spraying heads, gag lever post and the cover of breathing in, and motor four sets up in protection casing one side outer wall, and two rotations of lead screw are connected in protection casing one side inner wall, and the gag lever post sets up in protection casing one side inner wall, and the frame sliding connection that sprays paint is in the gag lever post outer wall, and the frame of spraying paint passes through threaded connection in two outer walls of lead screw, and two above paint spraying heads set up in the frame bottom outer wall that sprays paint.

On the basis of the scheme: the cover of breathing in sets up in protection casing top inner wall, and the cover one end of breathing in is provided with the dust absorption pipe, and the frame top inner wall that sprays paint is provided with and supplies the lacquer pipe, supplies the lacquer pipe to be connected with two above paint spraying heads, and casing one side outer wall is provided with dust catcher and paint kettle, and the paint kettle inner wall is provided with the agitator, and the dust catcher is connected with the dust absorption pipe, and paint kettle is connected with supplying the lacquer pipe, and the collecting vat has been seted up to casing top outer wall, and the collecting vat is located the protection casing below.

The use method of the automatic injection molding machine for the aluminum alloy casting mold comprises the following steps:

s1: placing a material on a feeding platform, then driving the feeding platform to move below a fixed clamp by a first motor, lifting the feeding platform, and driving two fixed clamping plates to move mutually by two bidirectional cylinders so as to clamp the material;

s2: the connecting shaft on the fixed clamp is rotatably connected to the inner wall of the connecting sleeve, and then the connecting shaft is clamped by the two limiting frames;

s3: starting a motor III to drive the fixing clamp to rotate, wherein the sliding block rotates along the arc-shaped sliding rail until the sliding block rotates to the position below the protective cover;

s4: controlling a hydraulic rod to enable a paint spraying head to be close to the material;

s5: supplying paint to more than two paint spraying heads by using a paint bucket, stirring by using a stirrer, starting a motor IV to drive the paint spraying heads to move, spraying paint on materials, starting a dust collector, and absorbing waste gas generated by spraying paint by using an air suction cover;

s6: controlling a motor II to drive the fixing clamp to rotate, so that the front side and the back side of the material are painted;

s7: and finally, rotating to a blanking platform for blanking.

The invention has the beneficial effects that:

1. through being provided with work platform, be provided with at work platform top outer wall and go up unloading mechanism, the rotary platform is located between the unloading mechanism, through putting the material on unloading mechanism, then fixture fixes the material, and cooperation coupling mechanism rotates along the arc slide rail, rotates the material to the mechanism below that sprays paint and sprays paint, at last rotates unloading in last unloading mechanism department of going up.

2. Through being provided with fixture, fixture includes mounting fixture, two solid fixed splint, two connecting axles and two-way cylinders, utilizes two-way cylinders to drive two solid fixed splint inter motion to accomplish the centre gripping to the material, when spraying paint, control motor two drives mounting fixture and rotates, thereby sprays paint to the material positive and negative.

3. Through being provided with coupling mechanism, coupling mechanism includes adapter sleeve, two spacing, four springs, four connecting rods and four mounts two, and the connecting axle on the mounting fixture rotates and connects in the adapter sleeve inner wall, then utilizes two spacing to carry out the centre gripping to the connecting axle, and starter motor three drives mounting fixture and rotates, and the sliding block is rotatory along the arc slide rail.

4. Through being provided with unloading mechanism, unloading mechanism includes two motors one, material loading platform, two lead screws one and unloading platform on going up, and material loading platform and unloading platform are lift platform, utilize motor one to drive material loading platform and unloading platform and remove to the mounting fixture below, then go up and down to the completion is gone up and down.

5. Through being provided with the mechanism of spraying paint, the mechanism of spraying paint includes motor four, lead screw two, the frame of spraying paint, two above paint spraying heads, gag lever post and the cover of breathing in, utilizes the paint kettle to supply lacquer to two above paint spraying heads, and the agitator stirs, then starter motor four, drives paint spraying head and removes, sprays paint to the material, starts the dust catcher, utilizes the cover of breathing in to absorb the waste gas that sprays paint and produce.

Drawings

FIG. 1 is a schematic structural view of an automatic injection molding machine for an aluminum alloy casting mold according to the present invention;

FIG. 2 is a schematic rear view of an automatic injection molding machine for an aluminum alloy casting mold according to the present invention;

FIG. 3 is a schematic structural view of a fixing clamp of an automatic mold spraying machine for an aluminum alloy casting mold according to the present invention;

FIG. 4 is a schematic structural view of a sliding block of an automatic mold spraying machine for an aluminum alloy casting mold according to the present invention;

FIG. 5 is a schematic structural view of a protective cover of an automatic mold spraying machine for an aluminum alloy casting mold according to the present invention;

FIG. 6 is a schematic view of the internal structure of a protective cover of an automatic mold spraying machine for an aluminum alloy casting mold according to the present invention.

In the figure: the automatic paint spraying machine comprises a shell 1, a first motor 2, a first feeding platform 3, a first lead screw 4, a sliding block 5, an arc-shaped sliding rail 6, a collecting tank 7, a tripod 8, a blanking platform 9, a dust collector 10, a paint bucket 11, a sliding groove 12, a working platform 13, a fixing clamp 14, a paint supply pipe 15, a dust collection pipe 16, a second motor 17, a rotating platform 18, a third motor 19, a fixing clamp plate 20, a connecting shaft 21, a bidirectional cylinder 22, a fixing plate 23, a connecting sleeve 24, a limiting frame 25, a spring 26, a connecting rod 27, a second fixing frame 28, a hydraulic rod 29, a connecting frame 30, a protective cover 31, a fourth motor 32, a second lead screw 33, a paint spraying frame 34, a paint spraying head 35, a limiting rod 36 and an air suction cover 37.

Detailed Description

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.

In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.

In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.

Example 1:

an automatic die-casting machine for aluminum alloy casting dies is shown in figures 1, 2, 3 and 5 and comprises a shell 1, wherein a working platform 13 is welded on the outer wall of the top of the shell 1, a feeding and discharging mechanism is arranged on the outer wall of the top of the working platform 13, a rotating platform 18 is connected on the outer wall of the top of the working platform 13 in a rotating mode, a fixing plate 23 is fixed on the outer wall of the top of the rotating platform 18 through bolts, a clamping mechanism is arranged on the inner wall of one side of the fixing plate 23, an arc-shaped sliding rail 6 is fixed on the outer wall of the top of the shell 1 through a support rod, a sliding block 5 is connected on the inner wall of one side of the arc-shaped sliding rail 6 in a sliding mode, a connecting mechanism is arranged on the outer wall of one side of the sliding block 5, the clamping mechanism is connected on the connecting mechanism in a rotating mode, a tripod 8 is fixed on the outer wall of one side of the working platform 13 through bolts, a hydraulic rod 29 is fixed on the outer wall of the bottom of the tripod 8 through bolts, a protective cover 31 is fixed on the telescopic end of the hydraulic rod 29 through the connecting frame 30, a paint spraying mechanism is arranged on the inner wall of the bottom of the protective cover 31; through being provided with work platform 13, be provided with at work platform 13 top outer wall and go up unloading mechanism, rotary platform 18 is located between the unloading mechanism, through putting the material on unloading mechanism, then fixture fixes the material, and cooperation coupling mechanism rotates along arc slide rail 6, rotates the material to the mechanism below that sprays paint and sprays paint, at last rotates unloading in last unloading mechanism department.

In order to clamp and fix the aluminum alloy; as shown in fig. 1 and 3, the clamping mechanism includes a fixing clamp 14, two fixing clamp plates 20, two connecting shafts 21 and two bidirectional cylinders 22, the two connecting shafts 21 are respectively welded on the outer walls of two sides of the fixing clamp 14, the two bidirectional cylinders 22 are respectively fixed on the inner walls of two sides of the fixing clamp 14 through bolts, the two fixing clamp plates 20 are respectively welded on the telescopic ends of the two bidirectional cylinders 22, one of the connecting shafts 21 is rotatably connected to the inner wall of one side of the fixing plate 23, a second motor 17 is fixed on the outer wall of the top of the fixing plate 23 through bolts, and an output shaft of the second motor 17 is connected with the connecting shaft 21 through a coupling; through being provided with fixture, fixture includes mounting fixture 14, two solid fixed splint 20, two connecting axles 21 and two-way cylinders 22, utilizes two-way cylinders 22 to drive two solid fixed splint 20 reciprocal movements to the completion is to the centre gripping of material, and when spraying paint, control motor two 17 drives mounting fixture 14 and rotates, thereby sprays paint to the material positive and negative.

In order to be able to support the other end when rotating the holding fixture 14; as shown in fig. 1, 3 and 4, the connecting mechanism includes a connecting sleeve 24, two limiting frames 25, four springs 26, four connecting rods 27 and four second fixing frames 28, the four second fixing frames 28 are respectively welded on two sides of the top and bottom outer walls of the sliding block 5, the four connecting rods 27 are respectively connected to the inner wall of one side of the four second fixing frames 28 in a sliding manner, the four connecting rods 27 are respectively connected to the two limiting frames 25, the four springs 26 are respectively clamped on the outer wall of one side of the four second fixing frames 28, the four springs 26 are respectively connected to the four connecting rods 27, the connecting sleeve 24 is welded on the outer wall of one side of the sliding block 5, one of the connecting shafts 21 is rotatably connected to the inner wall of the connecting sleeve 24, the outer wall of the bottom of the working platform 13 is fixed with a third motor 19 through bolts, and an output shaft of the third motor 19 is connected to the rotating platform 18 through a coupler; through being provided with coupling mechanism, coupling mechanism includes adapter sleeve 24, two spacing 25, four springs 26, four connecting rods 27 and four mount two 28, and connecting axle 21 on mounting fixture 14 rotates and connects in adapter sleeve 24 inner wall, then utilizes two spacing 25 to carry out the centre gripping to connecting axle 21, and the driving motor three 19 drives mounting fixture 14 and rotates, and sliding block 5 is rotatory along arc slide rail 6.

For loading and unloading; as shown in fig. 1 and 2, the feeding and discharging mechanism comprises two motors I2, a feeding platform 3, two lead screws I4 and a discharging platform 9, sliding grooves 12 are respectively formed in two sides of the outer wall of the top of a working platform 13, the two lead screws I4 are respectively rotatably connected to the inner wall of one side of each sliding groove 12, the feeding platform 3 and the discharging platform 9 are respectively slidably connected to the inner wall of one side of each sliding groove 12, the feeding platform 3 and the discharging platform 9 are respectively connected to the outer walls of the two lead screws I4 through threads, the two motors I2 are respectively fixed to the outer wall of one side of each sliding groove 12 through bolts, output shafts of the two motors I2 are respectively connected with the two lead screws I4 through couplers, and the feeding platform 3 and the discharging platform 9 are lifting platforms; through being provided with unloading mechanism, unloading mechanism includes two motors 2, material loading platform 3, two lead screws 4 and unloading platform 9 on the unloading mechanism, and material loading platform 3 and unloading platform 9 are lift platform, utilize motor 2 to drive material loading platform 3 and unloading platform 9 and remove to 14 below of mounting fixture, then go up and down to the completion is gone up and down.

When the material clamping device is used, a material is placed on the feeding platform 3, then the motor I2 drives the feeding platform 3 to move to the position below the fixed clamp 14, the feeding platform 3 is lifted, and the two bidirectional cylinders 22 are used for driving the two fixed clamping plates 20 to move mutually, so that the material is clamped; the connecting shaft 21 on the fixing clamp 14 is rotatably connected to the inner wall of the connecting sleeve 24, and then the connecting shaft 21 is clamped by using two limiting frames 25; starting a third motor 19 to drive the fixing clamp 14 to rotate, and rotating the sliding block 5 along the arc-shaped sliding rail 6 until the sliding block rotates to the position below the protective cover 31; controlling a second motor 17 to drive the fixed clamp 14 to rotate, so that the front side and the back side of the material are painted; and finally, rotating to a blanking platform 9 for blanking.

Example 2:

an automatic spray molding machine for aluminum alloy casting molds, as shown in FIGS. 1, 2, 5 and 6, for solving the problem of exhaust gas generated by spray painting; the paint spraying mechanism comprises a motor IV 32, a screw rod II 33, a paint spraying frame 34, more than two paint spraying heads 35, a limiting rod 36 and an air suction cover 37, wherein the motor IV 32 is fixed on the outer wall of one side of the protective cover 31 through bolts, the screw rod II 33 is rotatably connected on the inner wall of one side of the protective cover 31, the limiting rod 36 is clamped on the inner wall of one side of the protective cover 31, the paint spraying frame 34 is slidably connected on the outer wall of the limiting rod 36, the paint spraying frame 34 is connected on the outer wall of the screw rod II 33 through threads, the more than two paint spraying heads 35 are fixed on the outer wall of the bottom of the paint spraying frame 34 through bolts, the air suction cover 37 is clamped on the inner wall of the top of the protective cover 31, one end of the air suction cover 37 is clamped with a dust suction pipe 16, the inner wall of the top of the paint spraying frame 34 is clamped with a paint supply pipe 15, the paint supply pipe 15 is connected with the more than two paint spraying heads 35, the outer wall of one side of the shell 1 is fixed with a dust collector 10 and a paint bucket 11 through bolts, the inner wall of the paint bucket 11 is provided with a stirrer, the dust collector 10 is connected with the dust pipe 16, the paint bucket 11 is connected with the paint supply pipe 15, the outer wall of the top of the shell 1 is provided with a collecting groove 7, and the collecting groove 7 is positioned below the protective cover 31; through being provided with the mechanism of spraying paint, the mechanism of spraying paint includes motor four 32, two 33 of lead screw, the frame 34 of spraying paint, two above spray paint head 35, gag lever post 36 and cover 37 of breathing in, utilizes paint bucket 11 to supply lacquer to two above spray paint head 35, and the agitator stirs, then starter motor four 32, drives spray paint head 35 and removes, sprays paint to the material, starts dust catcher 10, utilizes cover 37 of breathing in to absorb the waste gas that sprays paint and produce.

When the device is used, the hydraulic rod 29 is controlled, so that the paint spray head 35 is close to the material; utilize paint kettle 11 to supply lacquer to more than two paint spraying heads 35, the agitator stirs, then starter motor four 32, drives paint spraying heads 35 and removes, sprays paint to the material, starts dust catcher 10, utilizes the cover 37 of breathing in to absorb the waste gas that sprays paint and produce.

Example 3:

s1: placing a material on a feeding platform 3, driving the feeding platform 3 to move below a fixed clamp 14 by a motor I2, lifting the feeding platform 3, and driving two fixed clamping plates 20 to move mutually by two bidirectional cylinders 22, so as to clamp the material;

s2: the connecting shaft 21 on the fixing clamp 14 is rotatably connected to the inner wall of the connecting sleeve 24, and then the connecting shaft 21 is clamped by using two limiting frames 25;

s3: starting a third motor 19 to drive the fixing clamp 14 to rotate, and rotating the sliding block 5 along the arc-shaped sliding rail 6 until the sliding block rotates to the position below the protective cover 31;

s4: controlling hydraulic lever 29 so that spray head 35 is close to the material;

s5: supplying paint to more than two paint spraying heads 35 by using a paint bucket 11, stirring by using a stirrer, starting a motor IV 32 to drive the paint spraying heads 35 to move, spraying paint on materials, starting a dust collector 10, and absorbing waste gas generated by spraying paint by using an air suction cover 37;

s6: controlling a second motor 17 to drive the fixed clamp 14 to rotate, so that the front side and the back side of the material are painted;

s7: and finally, rotating to a blanking platform 9 for blanking.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. An automatic mold spraying and molding machine for an aluminum alloy casting mold comprises a shell (1) and is characterized in that a working platform (13) is arranged on the outer wall of the top of the shell (1), a feeding and discharging mechanism is arranged on the outer wall of the top of the working platform (13), a rotating platform (18) is connected on the outer wall of the top of the working platform (13) in a rotating mode, a fixing plate (23) is arranged on the outer wall of the top of the rotating platform (18), a clamping mechanism is arranged on the inner wall of one side of the fixing plate (23), an arc-shaped sliding rail (6) is fixed on the outer wall of the top of the shell (1) through a supporting rod, a sliding block (5) is connected on the inner wall of one side of the arc-shaped sliding rail (6) in a sliding mode, a connecting mechanism is arranged on the outer wall of one side of the sliding block (5), the clamping mechanism is connected on the connecting mechanism in a rotating mode, a tripod (8) is arranged on the outer wall of one side of the working platform (13), a hydraulic rod (29) is arranged on the outer wall of the bottom of the tripod (8), the telescopic end of the hydraulic rod (29) is fixed with a protective cover (31) through a connecting frame (30), and the inner wall of the bottom of the protective cover (31) is provided with a paint spraying mechanism.

2. The automatic injection molding machine for the aluminum alloy casting mold according to claim 1, wherein the clamping mechanism comprises a fixing clamp (14), two fixing clamp plates (20), two connecting shafts (21) and two bidirectional cylinders (22), the two connecting shafts (21) are respectively arranged on outer walls of two sides of the fixing clamp (14), the two bidirectional cylinders (22) are respectively arranged on inner walls of two sides of the fixing clamp (14), the two fixing clamp plates (20) are respectively arranged on telescopic ends of the two bidirectional cylinders (22), one connecting shaft (21) is rotatably connected to an inner wall of one side of the fixing plate (23), a second motor (17) is arranged on an outer wall of the top of the fixing plate (23), and an output shaft of the second motor (17) is connected with the connecting shaft (21) through a coupler.

3. The automatic mold spraying and molding machine for the aluminum alloy casting mold as claimed in claim 2, wherein the connecting mechanism comprises a connecting sleeve (24), two limiting frames (25), four springs (26), four connecting rods (27) and four second fixing frames (28), the four second fixing frames (28) are respectively arranged on two sides of the outer wall of the top and the bottom of the sliding block (5), the four connecting rods (27) are respectively connected with the inner wall of one side of the four second fixing frames (28) in a sliding manner, and the four connecting rods (27) are respectively connected with the two limiting frames (25).

4. The automatic mold spraying and molding machine for the aluminum alloy casting mold as claimed in claim 3, wherein four springs (26) are respectively arranged on the outer wall of one side of four second fixing frames (28), the four springs (26) are respectively connected with four connecting rods (27), the connecting sleeve (24) is arranged on the outer wall of one side of the sliding block (5), one connecting shaft (21) is rotatably connected to the inner wall of the connecting sleeve (24), the outer wall of the bottom of the working platform (13) is provided with a third motor (19), and the output shaft of the third motor (19) is connected with the rotating platform (18) through a coupling.

5. The automatic die spraying and molding machine for the aluminum alloy casting die as claimed in claim 1, wherein the feeding and discharging mechanism comprises two motors I (2), a feeding platform (3), two screw rods I (4) and a discharging platform (9), sliding grooves (12) are respectively formed in two sides of the outer wall of the top of the working platform (13), the two screw rods I (4) are respectively rotatably connected to the inner wall of one side of the sliding grooves (12), and the feeding platform (3) and the discharging platform (9) are respectively slidably connected to the inner wall of one side of the sliding grooves (12).

6. The automatic die spraying and molding machine for the aluminum alloy casting mold as claimed in claim 5, wherein the feeding platform (3) and the discharging platform (9) are respectively connected to the outer walls of the two first screw rods (4) through threads, the two motors (2) are respectively arranged on the outer wall of one side of the sliding groove (12), the output shafts of the two motors (2) are respectively connected with the two first screw rods (4) through couplers, and the feeding platform (3) and the discharging platform (9) are lifting platforms.

7. The automatic die spraying and molding machine for the aluminum alloy casting die as recited in claim 1, wherein the paint spraying mechanism comprises a motor four (32), a screw rod two (33), a paint spraying frame (34), more than two paint spraying heads (35), a limiting rod (36) and an air suction cover (37), the motor four (32) is arranged on the outer wall of one side of the protective cover (31), the screw rod two (33) is rotatably connected to the inner wall of one side of the protective cover (31), the limiting rod (36) is arranged on the inner wall of one side of the protective cover (31), the paint spraying frame (34) is slidably connected to the outer wall of the limiting rod (36), the paint spraying frame (34) is connected to the outer wall of the screw rod two (33) through threads, and the more than two paint spraying heads (35) are arranged on the outer wall of the bottom of the paint spraying frame (34).

8. The automatic die spraying and molding machine for the aluminum alloy casting die as recited in claim 7, wherein the air suction cover (37) is arranged on the inner wall of the top of the protection cover (31), one end of the air suction cover (37) is provided with a dust suction pipe (16), the inner wall of the top of the paint spraying frame (34) is provided with a paint supply pipe (15), the paint supply pipe (15) is connected with more than two paint spraying heads (35), the outer wall of one side of the shell (1) is provided with a dust collector (10) and a paint bucket (11), the inner wall of the paint bucket (11) is provided with a stirrer, the dust collector (10) is connected with the dust suction pipe (16), the paint bucket (11) is connected with the paint supply pipe (15), the outer wall of the top of the shell (1) is provided with a collecting groove (7), and the collecting groove (7) is located below the protection cover (31).

9. A method of using an automatic injection molding machine for aluminum alloy casting molds according to any one of claims 1 to 8, comprising the steps of:

s1: placing a material on a feeding platform (3), driving the feeding platform (3) to move to the position below a fixed clamp (14) by a motor I (2), lifting the feeding platform (3), and driving two fixed clamping plates (20) to move mutually by two bidirectional cylinders (22) so as to clamp the material;

s2: a connecting shaft (21) on the fixed clamp (14) is rotatably connected to the inner wall of the connecting sleeve (24), and then the connecting shaft (21) is clamped by two limiting frames (25);

s3: starting a motor III (19) to drive the fixed clamp (14) to rotate, and rotating the sliding block (5) along the arc-shaped sliding rail (6) until the sliding block rotates to the position below the protective cover (31);

s4: controlling the hydraulic rod (29) to enable the paint spraying head (35) to be close to the materials;

s5: supplying paint to more than two paint spraying heads (35) by using a paint bucket (11), stirring by using a stirrer, starting a motor IV (32) to drive the paint spraying heads (35) to move, spraying paint on materials, starting a dust collector (10), and absorbing waste gas generated by spraying paint by using an air suction cover (37);

s6: controlling a second motor (17) to drive the fixed clamp (14) to rotate, so that the front and back surfaces of the material are painted;

s7: and finally, rotating to a blanking platform (9) for blanking.