Aluminum alloy die casting spraying device

Abstract

The invention relates to the technical field of casting spraying processing, and discloses an aluminum alloy die casting spraying device which comprises a circular truncated cone base, a circular groove is formed in the top of the circular truncated cone base, a connecting shaft is rotationally installed in the middle of the bottom of the circular groove through a bearing, and a rotating circular truncated cone is fixedly installed at the top of the connecting shaft. Twenty casting placing vertical grooves are annularly formed in the circumferential surface of the rotating circular truncated cone at equal intervals, circular-tube-shaped casting installing rotating components are installed at the bottoms of the twenty casting placing vertical grooves, an installing block is fixedly installed at the edge of the top of the circular truncated cone base, an installing groove is formed in the inner side of the installing block, and a conveying pipe is installed in the middle of the installing groove; one end of the conveying pipe extends to the outer side of the mounting block; the aluminum alloy die casting spraying device has the continuous machining function, batch and continuous feeding and discharging operation can be carried out, intermittent spraying operation can be carried out, and therefore the spraying machining efficiency and speed of aluminum alloy castings are effectively improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of casting spraying processing, and specifically relates to a spraying device for aluminum alloy die-castings. Background Art

[0002] Aluminum alloy die-cast products are relatively common in production and life, and are widely used in equipment such as automobiles, electronics, and household appliances. During the production process of aluminum alloy die-castings, surface spraying is required, which can not only achieve an aesthetic effect but also protect the aluminum alloy die-castings themselves. Therefore, the use of spraying devices is essential in the processing of aluminum alloy die-castings.

[0003] When the existing spraying device sprays and processes round-tubular aluminum alloy castings, it can only spray one or more workpieces at a time, and it cannot perform feeding operations batch by batch and continuously, thus reducing the efficiency and speed of spraying and processing aluminum alloy castings. At the same time, there is a lack of protection and drying functions during the spraying process, resulting in sputtering during the spraying process affecting the processing environment, and it is not convenient to remove the workpieces after spraying. Therefore, in view of the above problems, improvements are now needed. Summary of the Invention

[0004] To achieve the above object, the present invention provides the following technical solution: A spraying device for aluminum alloy die-castings, including a frustum-shaped base. A circular groove is opened at the top of the frustum-shaped base. The middle of the bottom of the circular groove is rotatably installed with a connecting shaft through a bearing. The top of the connecting shaft is fixedly installed with a rotating turntable that matches the circular groove. Twenty casting placement vertical grooves are annularly and equidistantly opened on the circumferential surface of the rotating turntable. Circular-tubular casting installation and rotation components are installed at the bottoms of the twenty casting placement vertical grooves. An installation block is fixedly installed at the edge of the top of the frustum-shaped base and is flush with the top of the rotating turntable. An installation groove is opened inside the installation block. A feeding pipe is installed in the middle of the installation groove. One end of the feeding pipe extends to the outside of the installation block. One end of the feeding pipe located inside the installation groove is fixedly installed with a vertical pipe. Nozzles are equidistantly installed on the surface of the vertical pipe. A baffle is fixedly installed on the top of the installation block and is in sliding contact with the top of the rotating turntable. An arc-shaped block is fixedly installed at the edge of the top of the frustum-shaped base and is flush with the top of the rotating turntable. An arc-shaped groove is opened on the inner arc surface of the arc-shaped block. Electric heating pipes are equidistantly installed inside the arc-shaped groove. An arc-shaped baffle is fixedly installed on the top of the arc-shaped block and is in sliding contact with the top of the rotating turntable.

[0005] Preferably, the twenty circular tubular casting mounting and rotating components all include hollow vertical pipes, and the hollow vertical pipes are all rotatably mounted at the bottoms of the twenty casting placing vertical grooves through bearings. On the surface of any one of the hollow vertical pipes, two arc-shaped abutting plates are symmetrically arranged. Between the inner arc surfaces of the arc-shaped abutting plates and the surfaces of the hollow vertical pipes, three first connecting rods are rotatably connected through movable shafts. Rubber blocks for clamping the inner walls of the circular tubular castings are fixedly mounted on the outer arc surfaces of the arc-shaped abutting plates, and support cross bars are fixedly mounted at the bottoms of the arc-shaped abutting plates.

[0006] Preferably, adjusting rods are rotatably mounted inside the hollow vertical pipes through bearings. The adjusting rods penetrate through the hollow vertical pipes. Threaded sections are provided at the tops of the adjusting rods, and lifting blocks are threadedly connected to the threaded sections. Second connecting rods are rotatably connected between the two ends of the lifting blocks and the tops of the two arc-shaped abutting plates on the surface of the hollow vertical pipes through movable shafts.

[0007] Preferably, the lower parts of the hollow vertical pipes penetrate through the rotating turntable and extend into the circular grooves, and gear rings are fixedly mounted on the lower parts of the hollow vertical pipes. A first gear is fixedly mounted at the bottom of the adjusting rod and is located directly below the gear ring. The first gear and the gear ring are of the same size.

[0008] Preferably, a short arc-shaped inner tooth block, a tall arc-shaped outer tooth block, a tall arc-shaped inner tooth block, and a short arc-shaped outer tooth block are fixedly mounted inside the circular groove. The short arc-shaped inner tooth block and the short arc-shaped outer tooth block are of the same height as the first gear, and the first gear is located between the short arc-shaped inner tooth block and the short arc-shaped outer tooth block. The tall arc-shaped outer tooth block, the tall arc-shaped inner tooth block, and the gear ring are of the same height, and the gear ring is located between the tall arc-shaped outer tooth block and the tall arc-shaped inner tooth block.

[0009] Preferably, a concave circular groove is provided in the middle of the circular groove. An internal gear ring is installed inside the concave circular groove. A second gear meshing with the internal gear ring is rotatably mounted inside the concave circular groove through a movable shaft, and a plurality of third gears meshing with the internal gear ring are rotatably mounted at equal arc distances inside the concave circular groove through movable shafts.

[0010] Preferably, a transmission shaft is rotatably mounted inside the concave circular groove through a bearing. A fourth gear meshing with the internal gear ring is fixedly mounted at the top of the transmission shaft. An inner cavity is provided in the middle of the turntable base and is located below the circular groove. The bottom of the transmission shaft extends into the inner cavity movably and is fixedly mounted with a first bevel gear. The connecting shaft extends into the inner cavity movably and is fixedly mounted with a second bevel gear.

[0011] Preferably, a motor is installed at one end of the inner cavity. The output end of the motor is fixedly installed with an adjusting shaft. One end of the adjusting shaft is rotationally and fixedly connected to the other end of the inner cavity through a bearing. One side of the adjusting shaft is fixedly installed with a first conical disc matching the first bevel gear. The inclined circumferential surface of the first conical disc is provided with a first arc-shaped tooth groove matching the first bevel gear and driving the first bevel gear.

[0012] Preferably, the other side of the adjusting shaft is fixedly installed with a second conical disc matching the second bevel gear. The inclined circumferential surface of the second conical disc is provided with a second arc-shaped tooth groove matching the second bevel gear and driving the second bevel gear.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0014] (1) The aluminum alloy die-casting part spraying device of the present invention has the function of continuous processing. It can perform batch and continuous loading and unloading operations and intermittent spraying operations, thus effectively improving the efficiency and speed of spraying and processing of aluminum alloy castings. At the same time, the spraying device has spraying protection and drying functions. The spraying protection effectively avoids the influence of spraying sputtering on the processing environment, and the drying function is conducive to the removal of the workpiece after spraying, thus facilitating continuous loading and unloading operations. Moreover, the structure of the aluminum alloy die-casting part spraying device of the present invention is simply designed, easy to use, the loading and conveying and spraying are stable and reliable, and its performance can meet the use requirements of spraying and processing of aluminum alloy die-castings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0016] In the drawings:

[0017] Figure 1 is a top view structural schematic diagram of the aluminum alloy die-casting part spraying device of the present invention;

[0018] Figure 2 is of the present invention Figure 1 partial structural schematic diagram;

[0019] Figure 3 is of the present invention Figure 2 sectional structural schematic diagram;

[0020] Figure 4 is a front sectional structural schematic diagram of the frustum base and the rotating turntable of the present invention;

[0021] Figure 5 is of the present invention Figure 4 partial structural schematic Figure One ;

[0022] Figure 6 For the present invention Figure 5 partial structural schematic diagram;

[0023] Figure 7 For the present invention Figure 4 partial structure schematic Figure Two ;

[0024] Figure 8 is the side sectional structure schematic diagram of the frustum base of the present invention;

[0025] In the figure: 1, frustum base; 2, circular groove; 3, connecting shaft; 4, rotating frustum; 5, vertical casting placement groove; 6, circular tube casting installation rotating part; 7, mounting block; 8, mounting groove; 9, feed pipe; 10, vertical pipe; 11, nozzle; 12, baffle; 13, arc-shaped block; 14, arc-shaped groove; 15, electric heating tube; 16, arc-shaped baffle; 17, hollow vertical pipe; 18, arc-shaped contact plate; 19, first connecting rod; 20, rubber block; 21, support cross bar; 22, adjusting rod; 23, threaded section; 24, lifting block; 25, second connecting rod; 26, gear ring; 27, first gear; 28, short arc-shaped inner tooth block; 29, tall arc-shaped outer tooth block; 30, tall arc-shaped inner tooth block; 31, short arc-shaped outer tooth block; 32, concave ring groove; 33, internal gear ring; 34, second gear; 35, third gear; 36, transmission shaft; 37, fourth gear; 38, inner cavity; 39, first bevel gear; 40, second bevel gear; 41, motor; 42, adjusting shaft; 43, first conical disc; 44, first arc-shaped tooth groove; 45, second conical disc; 46, second arc-shaped tooth groove. Specific embodiments

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0027] Embodiment 1, given by Figures 1 to 8 The present invention includes a frustum base 1. A circular groove 2 is opened at the top of the frustum base 1. The middle of the bottom of the circular groove 2 is rotatably installed with a connecting shaft 3 through a bearing. The top of the connecting shaft 3 is fixedly installed with a rotating frustum 4 that matches the circular groove 2. Twenty vertical casting placement grooves 5 are annularly and equidistantly opened on the circumferential surface of the rotating frustum 4. Circular tube casting installation rotating parts 6 are installed at the bottoms of the twenty vertical casting placement grooves 5.

[0028] A mounting block 7 flush with the top of the rotating truncated table 4 is fixedly installed at the edge of the top of the truncated table base 1, a mounting groove 8 is opened on the inner side of the mounting block 7, a feed pipe 9 is installed in the middle of the mounting groove 8, one end of the feed pipe 9 extends to the outside of the mounting block 7, one end of the feed pipe 9 located outside the mounting block 7 is connected to an external pump body, the external pump body is installed on the paint storage tank and communicated with the paint storage tank, a vertical pipe 10 is fixedly installed at one end of the feed pipe 9 located inside the mounting groove 8, nozzles 11 are installed at equal distances on the surface of the vertical pipe 10, and the top of the mounting block 7 is fixedly A baffle 12 is fixedly installed to be in sliding contact with the top of the rotating table 4, an arc block 13 flush with the top of the rotating table 4 is fixedly installed at the edge of the top of the table base 1, an arc groove 14 is opened on the inner arc surface of the arc block 13, electric heating tubes 15 are installed at equal distances inside the arc groove 14, the angle between any two adjacent electric heating tubes 15 is 9°, the angle between the vertical tube 10 and the nearest adjacent electric heating tube 15 is 27°, and an arc baffle 16 is fixedly installed on the top of the arc block 13 to be in sliding contact with the top of the rotating table 4.

[0029] The aluminum alloy die-casting spraying device has the function of continuous processing, and can perform batch and continuous loading and unloading operations as well as intermittent spraying operations, thereby effectively improving the efficiency and speed of the aluminum alloy casting spraying processing. At the same time, the spraying device has spraying protection and drying functions. The spraying protection effectively avoids the influence of spraying sputtering on the processing environment, and the drying function is conducive to the removal of the workpiece after spraying, which is conducive to continuous loading and unloading operations. In addition, the aluminum alloy die-casting spraying device has a simple structural design, is easy to use, and has stable and reliable loading, conveying and spraying. Its performance can meet the use requirements of aluminum alloy die-casting spraying processing.

[0030] Embodiment 2, on the basis of embodiment 1, twenty circular tubular casting mounting rotating parts 6 all include hollow vertical tubes 17, and the hollow vertical tubes 17 are rotatably mounted on the bottom of the twenty casting placement vertical grooves 5 through bearings, and the surface of any hollow vertical tube 17 is symmetrically provided with two arc-shaped contact plates 18, and the inner arc surface of the arc-shaped contact plate 18 and the surface of the hollow vertical tube 17 are rotatably connected by three first connecting rods 19 through a movable shaft, and the outer arc surface of the arc-shaped contact plate 18 is fixedly mounted with a rubber block 20 for clamping the inner wall of the circular tubular casting, and the bottom of the arc-shaped contact plate 18 is fixedly mounted with a supporting cross bar 21.

[0031] An adjusting rod 22 is rotatably installed inside the hollow vertical tube 17 through a bearing. The adjusting rod 22 passes through the hollow vertical tube 17. A threaded section 23 is provided on the top of the adjusting rod 22. A lifting block 24 is threadedly connected to the threaded section 23. A second connecting rod 25 is rotatably connected between the two ends of the lifting block 24 and the tops of the two arc-shaped contact plates 18 on the surface of the hollow vertical tube 17 through a movable shaft, thereby effectively installing and fixing the circular tubular casting.

[0032] Specifically, the tubular casting is sleeved on the surface of the tubular casting mounting rotating component 6 inside the casting placement vertical groove 5 and is located on the top of the supporting cross bar 21, and then the lifting block 24 is moved downward on the threaded section 23 by rotating the adjusting rod 22, and the downwardly moved lifting block 24 will drive the two second connecting rods 25 to move downward, and the downwardly moved second connecting rods 25 will push the arc-shaped resistance plate 18 to move downward obliquely, and finally the two arc-shaped resistance plates 18 on the surface of the hollow vertical tube 17 drive the rubber block 20 on its surface to resist and clamp the inner wall of the tubular casting, so that the tubular casting can be firmly installed.

[0033] The lower part of the hollow vertical tube 17 passes through the rotating truncated table 4 and extends to the inside of the circular groove 2, and a gear ring 26 is fixedly installed at the lower part of the hollow vertical tube 17, and a first gear 27 located directly below the gear ring 26 is fixedly installed at the bottom of the adjusting rod 22. The first gear 27 is the same size as the gear ring 26. A short arc-shaped inner tooth block 28, a high arc-shaped outer tooth block 29, a high arc-shaped inner tooth block 30 and a short arc-shaped outer tooth block 31 are fixedly installed inside the circular groove 2. The short arc-shaped inner tooth block 28 and the short arc-shaped outer tooth block 31 have the same height as the first gear 27, and the first gear 27 is located between the short arc-shaped inner tooth block 28 and the short arc-shaped outer tooth block 31. The first gear 27 meshes with the short arc inner tooth block 28 and the short arc outer tooth block 31 respectively during movement and performs rotation adjustment in different directions. The high arc outer tooth block 29, the high arc inner tooth block 30 and the gear ring 26 have the same height, and the gear ring 26 is located between the high arc outer tooth block 29 and the high arc inner tooth block 30. The gear ring 26 meshes with the high arc outer tooth block 29 and the high arc inner tooth block 30 respectively during movement and performs rotation adjustment in different directions. The short arc inner tooth block 28 and the high arc inner tooth block 30 are on the same circular trajectory, and the high arc outer tooth block 29 and the short arc outer tooth block 31 are located on the same circular trajectory.

[0034] Specifically, when the rotating truncated table 4 rotates through the connecting shaft 3 and the bearing, it will drive the twenty casting placement vertical slots 5 and the twenty tubular casting installation rotating parts 6 to rotate, so that the gear ring 26 and the first gear 27 rotate and move. When the moving gear ring 26 and the first gear 27 rotate and move and contact and mesh with the high arc outer tooth block 29 and the short arc inner tooth block 28 respectively, the moving gear ring 26 and the first gear 27 will rotate in opposite directions on the high arc outer tooth block 29 and the short arc inner tooth block 28 respectively. The moving gear ring 26 and the first gear 27 rotating in opposite directions will respectively drive the hollow vertical pipe 17 and the adjusting rod 22 to rotate in opposite directions, so that the lifting block 24 can be stably moved downward on the threaded section 23 for adjustment; the downward movement of the lifting block 24 enables the two arc-shaped contact plates 18 to contact and clamp the inner wall of the tubular casting through the rubber block 20;

[0035] Similarly, when the moving gear ring 26 and the first gear 27 are in contact with and rotate to adjust the high-arc inner tooth block 30 and the low-arc outer tooth block 31 respectively, the lifting block 24 can be stably adjusted upward on the threaded section 23; the upward movement of the lifting block 24 causes the two arc-shaped abutting plates 18 to drive the rubber block 20 to separate from the inner wall of the tubular casting, so that the sprayed and dried tubular casting can be removed from the tubular casting mounting rotating member 6;

[0036] The rotating table 4 rotates intermittently by 9° each time, so as to move the fixed tubular casting to align with the mounting groove 8 and intermittently stop. At this time, by starting the external pump body, the paint is sprayed through the surface of the feed pipe 9, the vertical pipe 10 and the nozzle 11. At this time, the nozzle 11 can only spray the surface of the tubular casting on the side facing the nozzle 11, and the surface of the tubular casting on the side facing away from the nozzle 11 cannot be sprayed; the wrapping of the rotating table 4, the mounting block 7 and the baffle 12 can prevent the splashing during the spraying of the nozzle 11;

[0037] Each intermittent 9° rotation of the rotating table 4 drives the already sprayed tubular casting to move. Finally, the sprayed tubular casting is moved between the inner sides of the arc-shaped block 13 and the arc-shaped baffle 16, and then by turning on the electric heating tube 15, it dries the sprayed tubular casting.

[0038] Embodiment 3, on the basis of Embodiment 1, a concave ring groove 32 is provided in the middle of the circular groove 2. An internal gear ring 33 is installed inside the concave ring groove 32. A second gear 34 meshing with the internal gear ring 33 is rotatably installed inside the concave ring groove 32 through a movable shaft. A plurality of third gears 35 meshing with the internal gear ring 33 are rotatably installed inside the concave ring groove 32 at equal intervals in an arc shape through a movable shaft. The angle between any two adjacent third gears 35 is 9°. The angle between the second gear 34 and the nearest third gear 35 to it is 27°. The second gear 34 and the plurality of third gears 35 have the same height as the gear ring 26, and the second gear 34 and the plurality of third gears 35 can mesh with the gear ring 26 and drive the gear ring 26.

[0039] Inside the concave circular groove 32, a transmission shaft 36 is rotatably installed through a bearing. At the top of the transmission shaft 36, a fourth gear 37 meshed with the internal gear ring 33 is fixedly installed. In the middle of the conical base 1, an inner cavity 38 located below the circular groove 2 is provided. The bottom of the transmission shaft 36 extends movably into the inner cavity 38 and a first bevel gear 39 is fixedly installed. One end of the connecting shaft 3 extends movably into the inner cavity 38 and a second bevel gear 40 is fixedly installed. At one end of the inner cavity 38, a motor 41 is installed. The output end of the motor 41 is fixedly installed with an adjusting shaft 42. One end of the adjusting shaft 42 is rotatably connected to the other end of the inner cavity 38 through a bearing. On one side of the adjusting shaft 42, a first conical disc 43 matched with the first bevel gear 39 is fixedly installed. On the inclined circumferential surface of the first conical disc 43, a first arc-shaped tooth groove 44 matched with the first bevel gear 39 and used for driving the first bevel gear 39 is provided. Both the motor 41 and the electric heating tube 15 are controlled through an external controller. By controlling the motor 41 through the external controller to rotate intermittently for an equal number of turns, and at the same time controlling the start and stop of an external pump body through the external controller. When the rotating turntable 4 stops rotating, the external pump body starts and the spray head 11 performs a spraying operation; when the rotating turntable 4 rotates, the external pump body stops and the spray head 11 stops spraying.

[0040] On the other side of the adjusting shaft 42, a second conical disc 45 matched with the second bevel gear 40 is fixedly installed. On the inclined circumferential surface of the second conical disc 45, a second arc-shaped tooth groove 46 matched with the second bevel gear 40 and used for driving the second bevel gear 40 is provided. The second arc-shaped tooth groove 46 is arranged in a dislocation manner with the first arc-shaped tooth groove 44, so as to be able to adjust the rotation of the rotating turntable 4 intermittently.

[0041] Specifically, during use, by starting the motor 41, the motor 41 drives the adjusting shaft 42 to rotate. The rotation of the adjusting shaft 42 drives the first conical disc 43, the first arc-shaped tooth groove 44, the second conical disc 45 and the second arc-shaped tooth groove 46 to rotate;

[0042] When the second arc-shaped tooth groove 46 rotates to drive the second bevel gear 40, the first arc-shaped tooth groove 44 is in a separated state from the first bevel gear 39 and the first bevel gear 39 does not rotate. The transmission of the second bevel gear 40 drives the connecting shaft 3 and the rotating turntable 4 to rotate, so that the rotating turntable 4 rotates by 9°. After that, the second arc-shaped tooth groove 46 is separated from the second bevel gear 40 and the rotating turntable 4 stops moving. The rotation of the rotating turntable 4 by 9° drives one of the tooth rings 26 to mesh with the second gear 34, and at the same time drives several other tooth rings 26 to mesh with several third gears 35;

[0043] Subsequently, the first arc-shaped tooth groove 44 will engage with the first bevel gear 39 to drive the first bevel gear 39 to rotate. The rotation of the first bevel gear 39 will drive the fourth gear 37 to rotate through the transmission shaft 36. The rotation of the fourth gear 37 will drive the internal gear ring 33 to rotate. The rotation of the internal gear ring 33 will drive the second gear 34 and all the third gears 35 to rotate. The rotation of the second gear 34 will drive the engaged gear ring 26 to rotate. The rotation of this gear ring 26 will drive the tubular casting opposite to the nozzle 11 to rotate, so as to uniformly and comprehensively spray the surface of the tubular casting with the nozzle 11. At the same time, the rotation of all the third gears 35 will drive the engaged gear ring 26 to rotate, so as to rotate the sprayed tubular casting opposite to the electric heating tube 15, and the sprayed tubular casting can be evenly dried.

[0044] Through the alternating transmission of the second arc-shaped tooth groove 46 to the second bevel gear 40 and the first arc-shaped tooth groove 44 to the first bevel gear 39, the rotating turntable 4 rotates intermittently and stops. During the stopping process of the rotating turntable 4, the tubular casting opposite to the nozzle 11 will rotate and be evenly sprayed, and at the same time, the tubular casting opposite to the electric heating tube 15 will rotate and be evenly dried. And during the stopping process of the rotating turntable 4, the installation of the tubular casting and the disassembly operation of the sprayed and dried tubular casting can be carried out. The rotation of the rotating turntable 4 enables continuous processing operations.

[0045] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0046] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An aluminum alloy die-casting spraying device, comprising a frustum-shaped base (1), characterized in that: The top of the truncated cone base (1) is provided with a circular groove (2), a connecting shaft (3) is rotatably mounted in the middle of the bottom of the circular groove (2) via a bearing, a rotating truncated cone (4) matching the circular groove (2) is fixedly mounted on the top of the connecting shaft (3), twenty casting placement vertical grooves (5) are equidistantly arranged in an annular manner on the circumferential surface of the rotating truncated cone (4), and a tubular casting mounting rotating component (6) is mounted at the bottom of each of the twenty casting placement vertical grooves (5); A mounting block (7) flush with the top of the rotating truncated table (4) is fixedly mounted at the edge of the top of the truncated table base (1), a mounting groove (8) is provided on the inner side of the mounting block (7), a feed pipe (9) is installed in the middle of the mounting groove (8), one end of the feed pipe (9) extends to the outside of the mounting block (7), a vertical pipe (10) is fixedly mounted on one end of the feed pipe (9) located inside the mounting groove (8), nozzles (11) are equidistantly mounted on the surface of the vertical pipe (10), and the mounting block (7) is provided with a mounting groove (8). ) is fixedly mounted on the top of the rotating table (4) with a baffle (12) in sliding contact with the top of the rotating table (4); an arc block (13) flush with the top of the rotating table (4) is fixedly mounted at the edge of the top of the table base (1); an arc groove (14) is provided on the inner arc surface of the arc block (13); electric heating tubes (15) are equidistantly mounted inside the arc groove (14); and an arc baffle (16) in sliding contact with the top of the rotating table (4) is fixedly mounted on the top of the arc block (13).

2. The spraying device for aluminum alloy die-castings according to claim 1, wherein: The twenty circular tubular casting installation rotating components (6) all include hollow vertical tubes (17), and the hollow vertical tubes (17) are rotatably installed at the bottom of the twenty casting placement vertical grooves (5) through bearings. The surface of any hollow vertical tube (17) is symmetrically provided with two arc-shaped contact plates (18), and the inner arc surface of the arc-shaped contact plate (18) and the surface of the hollow vertical tube (17) are rotatably connected by three first connecting rods (19) through a movable shaft. The outer arc surface of the arc-shaped contact plate (18) is fixedly installed with a rubber block (20) for clamping the inner wall of the circular tubular casting, and the bottom of the arc-shaped contact plate (18) is fixedly installed with a supporting cross bar (21).

3. The spraying device for aluminum alloy die-castings according to claim 2, characterized in that: An adjusting rod (22) is rotatably mounted inside the hollow vertical tube (17) via a bearing. The adjusting rod (22) penetrates the hollow vertical tube (17). A threaded section (23) is provided on the top of the adjusting rod (22). A lifting block (24) is threadedly connected to the threaded section (23). A second connecting rod (25) is rotatably connected between the two ends of the lifting block (24) and the tops of two arc-shaped contact plates (18) on the surface of the hollow vertical tube (17) via a movable shaft.

4. An aluminum alloy die-casting spraying device according to claim 3, characterized in that: The lower part of the hollow vertical tube (17) passes through the rotating truncated table (4) and extends to the inside of the circular groove (2), and a gear ring (26) is fixedly installed at the lower part of the hollow vertical tube (17), and a first gear (27) located directly below the gear ring (26) is fixedly installed at the bottom of the adjusting rod (22), and the first gear (27) and the gear ring (26) are the same size.

5. The spraying device for aluminum alloy die-castings according to claim 4, wherein: Inside the circular groove (2), a short arc-shaped inner tooth block (28), a tall arc-shaped outer tooth block (29), a tall arc-shaped inner tooth block (30), and a short arc-shaped outer tooth block (31) are fixedly installed. The short arc-shaped inner tooth block (28) and the short arc-shaped outer tooth block (31) have the same height as the first gear (27), and the first gear (27) is located between the short arc-shaped inner tooth block (28) and the short arc-shaped outer tooth block (31). The tall arc-shaped outer tooth block (29), the tall arc-shaped inner tooth block (30), and the tooth ring (26) have the same height, and the tooth ring (26) is located between the tall arc-shaped outer tooth block (29) and the tall arc-shaped inner tooth block (30).

6. The spraying device for aluminum alloy die-castings according to claim 5, wherein: In the middle of the circular groove (2), a concave circular groove (32) is provided. Inside the concave circular groove (32), an internal tooth ring (33) is installed. Inside the concave circular groove (32), a second gear (34) meshing with the internal tooth ring (33) is rotatably installed through a movable shaft, and a plurality of third gears (35) meshing with the internal tooth ring (33) are rotatably installed at equal arc distances through movable shafts inside the concave circular groove (32).

7. A spraying device for aluminum alloy die-castings according to claim 6, characterized in that: Inside the concave circular groove (32), a transmission shaft (36) is rotatably installed through a bearing. At the top of the transmission shaft (36), a fourth gear (37) meshing with the internal tooth ring (33) is fixedly installed. In the middle of the frustum base (1), an inner cavity (38) located below the circular groove (2) is provided. The bottom of the transmission shaft (36) extends movably into the inner cavity (38) and a first bevel gear (39) is fixedly installed. The connecting shaft (3) extends movably into the inner cavity (38) and a second bevel gear (40) is fixedly installed.

8. An aluminum alloy die-casting spraying device according to claim 7, characterized in that: At one end of the inner cavity (38), a motor (41) is installed. At the output end of the motor (41), an adjusting shaft (42) is fixedly installed. One end of the adjusting shaft (42) is rotatably connected to the other end of the inner cavity (38) through a bearing. On one side of the adjusting shaft (42), a first conical disc (43) matching the first bevel gear (39) is fixedly installed. On the inclined circumferential surface of the first conical disc (43), a first arc-shaped tooth groove (44) matching the first bevel gear (39) and driving the first bevel gear (39) is provided.

9. The spraying device for aluminum alloy die-castings according to claim 8, characterized in that: On the other side of the adjusting shaft (42), a second conical disc (45) matching the second bevel gear (40) is fixedly installed. On the inclined circumferential surface of the second conical disc (45), a second arc-shaped tooth groove (46) matching the second bevel gear (40) and driving the second bevel gear (40) is provided.

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