Special cooling and purging equipment for large disc of rotary coating machine

Abstract

The utility model discloses special cooling and purging equipment for a large disc of a rotary coating machine, which comprises a shell, the large disc, a large disc bracket, a purging device, a dust collection guide component, a coupling lifting device and a driving mechanism, the large disc bracket is arranged in the shell, a table top is arranged on the large disc bracket, a purging cavity is arranged above the table top, the coupling lifting device is arranged on the table top, and the driving mechanism is arranged on the large disc bracket. The lower portion of the coupling lifting device is connected with the driving mechanism, and the upper portion of the coupling lifting device is coupled with the bottom of the large disc. The blowing device is arranged in the blowing cavity in the vertical direction, located in front of the large disc and aligned with the large disc to blow air so that dust on the large disc can be blown off, a dust collection guide assembly is arranged behind the large disc and collects the dust blown off from the large disc, and an air hole penetrating through the shell is formed behind the dust collection guide assembly. Air blown by the blowing device passes through the large disc and then is discharged outwards from the air holes; the device can effectively collect blown dust and is high in cleaning efficiency.

Description

Technical Field

[0001] The utility model belongs to the technical field of cleaning equipment for coating machines, and particularly relates to a special cooling and purging device for the large plate of a rotary coating machine. Background Art

[0002] Rotary coating is a method of forming a uniform and controllable thin film on the surface of a workpiece by using a high-speed rotating workpiece. The process flow is to place the workpiece in a rotary coating machine, perform air evacuation treatment, and then place the coating material in a coater in a vacuum environment. Through thermal cathode electron beam bombardment or DC arc heating, the coating material generates metal vapor, which is deposited on the surface of the workpiece to form a uniform and dense thin film. Rotary coating technology is widely used in various fields such as optics, electronics manufacturing, and aerospace industry.

[0003] During the rotary coating process, the workpiece needs to be installed on a rotating large plate for rotation. Therefore, after the processing is completed, the surface of the rotating large plate will be contaminated with coating materials and dust and ash residues, which need to be cleaned by operators. The existing cleaning method is that the operator pushes the large plate out of the furnace into the purging room and waits for it to cool before purging it with an air gun. When purging, the large plate also needs to be manually rotated to cooperate with the action of the air gun. However, when the large plate cools outdoors, ash residues will fall on the ground and cannot be effectively collected, affecting the management of the on-site environment. Moreover, since the purging room is not absolutely sealed and the exhaust system is not perfect, the purged dust cannot be effectively and timely processed, and some dust will also remain on the large plate, affecting the subsequent use of the large plate. Manual operation is also difficult to ensure the standardization of the operation, the cleaning effect is unstable, and the labor intensity of workers is high. Summary of the Utility Model

[0004] In view of the above problems and technical requirements, the utility model provides a special cooling and purging device for the large plate of a rotary coating machine, which automatically purges the large plate in a closed cavity, does not occupy manual labor, does not affect the on-site environment, can effectively collect the purged dust, and has high cleaning efficiency.

[0005] The technical solution of the utility model is as follows: A special cooling and purging device for the large plate of a rotary coating machine includes a housing, a large plate, a large plate support, a purging device, a dust collection guiding component, a coupling lifting device, and a driving mechanism. The large plate support is placed inside the housing. There is a tabletop on the large plate support, and above the tabletop is a purging chamber. There is a coupling lifting device on the tabletop. The lower part of the coupling lifting device is connected to the driving mechanism, and the upper part is coupled to the bottom of the large plate. The driving mechanism drives the large plate to rotate. The purging device is arranged vertically in the purging chamber. The purging device is located in front of the large plate and blows air towards the large plate to blow off the dust on the large plate. There is a dust collection guiding component behind the large plate, and the dust collection guiding component collects the dust blown off from the large plate. There is a wind hole passing through the housing behind the dust collection guiding component, and the air blown by the purging device passes through the large plate and is discharged outwards through the wind hole.

[0006] Furthermore, the dust collection guiding assembly includes an upper plate, a lower plate, a dust collection plate and a dust collection bin. The upper plate is connected to the top surface of the housing, the lower plate is connected to the tabletop while avoiding the large disc, the dust collection plate is correspondingly arranged behind the large disc, the upper and lower edges of the dust collection plate are welded to the upper plate and the lower plate respectively, the two side edges of the dust collection plate are hermetically connected to the inner side surface of the housing, the middle part of the dust collection plate is an arc-shaped dust collection area which faces the large disc, the arc-shaped dust collection area is covered with small holes, the back surface of the arc-shaped dust collection area is hermetically connected to the dust collection bin, the dust collection bin is conical, and an air hole is provided at the conical top of the dust collection bin.

[0007] Furthermore, on both sides in front of the large disc, a purging device is symmetrically provided. The purging device includes an air duct and a purging air knife. The air duct is vertically arranged, the upper end of the air duct is connected to the upper plate, the lower end is connected to the lower plate, a row of purging air knives is connected to the side of the air duct facing the large disc. The purging air knives are fan-shaped flat-mouth type, and the purging air knives are arranged at equal intervals. The angle between the flat mouth of the purging air knife and the axial direction of the large disc is 45 degrees.

[0008] Furthermore, a coupling hole is provided in the middle of the tabletop. Linear tracks are provided on both sides of the coupling hole. The coupling lifting device is connected to the bottom of the large disc through the coupling hole for positioning. A positioning collar is rotatably connected to the center of the bottom surface of the large disc, and the positioning collar drives the large disc to rotate. Two positioning support plates are fixedly provided on the bottom surface of the large disc. A plurality of rollers are rotatably connected to the outer side surfaces of the positioning support plates. The rollers on each positioning support plate are connected to a linear track, and the large disc is pushed into the purging cavity through the rollers.

[0009] Furthermore, the coupling lifting device includes a Y-shaped fork, a fork driving assembly, a lifting sleeve and a rotating shaft. The rotating shaft is connected to the driving mechanism. The lifting sleeve is sleeved on the upper end of the rotating shaft. A limiting bearing is provided in the middle of the rotating shaft. A spring is provided between the lifting sleeve and the limiting bearing. A limiting long hole is axially provided on the peripheral surface of the lifting sleeve. A limiting bolt inserted into the limiting long hole is provided on the peripheral surface of the rotating shaft. The limiting bolt cooperates with the limiting long hole to move, and limits the axial lifting range of the lifting sleeve on the rotating shaft. A shaft sleeve is provided outside the lifting sleeve and the limiting bearing. The top surface of the shaft sleeve is connected to the tabletop through bolts. The rotating shaft is rotatably connected between the limiting bearing and the shaft sleeve; both sides at the front end of the Y-shaped fork are hinged to the lifting sleeve, the end of the handle part of the Y-shaped fork is hinged to the inner wall of the coupling hole on the tabletop, a through hole is provided in the handle part of the Y-shaped fork, and the through hole is an elliptical hole. One end of the fork driving assembly is connected to the through hole, and the fork driving assembly drives the lifting sleeve to move upward through the Y-shaped fork.

[0010] Furthermore, the fork driving assembly includes a cylinder, a rocker and a pin. A first bracket and a second bracket are vertically provided at the bottom of the tabletop. The first bracket is hinged to one end of the cylinder. The other end of the cylinder is hinged to the lower end of the pin through the rocker. The middle of the rocker is hinged to the second bracket. The upper end of the pin penetrates and is inserted into the through hole of the Y-shaped fork. The cylinder drives the pin to move up and down through the rocker, and the pin supports the lifting sleeve to move up and down through the Y-shaped fork.

[0011] Furthermore, two positioning blind holes are provided on the positioning collar at the bottom surface of the large plate, and an embedded convex ring and two positioning columns are provided at the top of the lifting sleeve. While the embedded convex ring is embedded in the positioning collar, the two positioning columns are correspondingly inserted into the positioning blind holes.

[0012] Furthermore, the driving mechanism includes a fixing frame, a motor, a driving wheel and a belt. The fixing frame is connected to the bottom of the tabletop, the motor is connected to the fixing frame, a driving wheel is provided at the output end of the motor, the driving wheel is connected to the end of the rotating shaft through the belt, and the motor drives the large plate to rotate through the driving wheel.

[0013] The beneficial effects of the present utility model are as follows: 1) The equipment separates the large plate and the purging device from the external environment through the outer shell. The large plate realizes automatic purging and dust removal in the purging cavity, and the blown dust is centrally collected through the dust collection guiding assembly, without affecting the external environment, which is convenient for the 5S management of the on-site environment; 2) The purging air knife and the large plate form a 45-degree angle. The high-pressure gas blown out from the flat openings of the entire row of purging air knives covers all areas in the axial direction of the large plate, and the dust is blown off with the rotation of the large plate, and the dust removal effect is better than that of horizontal or vertical airflows; the blown dust is guided by the arc-shaped dust collection area of the dust collection plate and gathers here, and is collected into the dust collection bin through the small holes. The dust collection effect is good. Since the blowing dust airflow finally blows out through the air holes, the dust will not flow back into the purging cavity, and the dust removal effect is good without dust remaining; 3) The bottom of the large plate can be smoothly pushed into the purging cavity through the rollers, and the coupling lifting device can couple and connect the large plate and the rotating shaft, which is convenient for the smooth transmission of power. The coupling lifting device has a "clutch" function, and it is also convenient to disconnect the driving mechanism and the large plate after cleaning, which is convenient for taking and placing the large plate. Description of the Drawings

[0014] Figure 1 It is a front shell internal structure diagram of the special cooling and purging equipment for the large plate of the rotary coating machine of the present utility model;

[0015] Figure 2 It is a back shell internal structure diagram of the special cooling and purging equipment for the large plate of the rotary coating machine of the present utility model;

[0016] Figure 3 It is an outer shell structure diagram of the special cooling and purging equipment for the large plate of the rotary coating machine of the present utility model;

[0017] Figure 4 It is an internal structure diagram inside the outer shell of the present utility model;

[0018] Figure 5 It is a large plate structure diagram of the present utility model;

[0019] Figure 6 It is a structure diagram of the dust collection guiding assembly of the present utility model;

[0020] Figure 7 This is the connection diagram of the dust collection plate, upper plate, and lower plate in the present utility model;

[0021] Figure 8 This is the structural diagram of the purging device in the present utility model;

[0022] Figure 9 This is the structural diagram of the tabletop of the large disc bracket in the present utility model;

[0023] Figure 10 This is the structural diagram of the coupling lifting device below the tabletop in the present utility model;

[0024] Figure 11 This is the connection diagram of the coupling lifting device and the driving mechanism in the present utility model;

[0025] The markings in the figure are: housing 1, purging chamber 11, large disc 2, positioning collar 21, positioning blind hole 211, positioning support plate 22, roller 23, large disc bracket 3, tabletop 31, coupling hole 32, linear track 33, purging device 4, air duct 41, purging air knife 42, dust collection guiding assembly 5, upper plate 51, lower plate 52, dust collection plate 53, arc-shaped dust collection area 531, small hole 532, dust collection bin 54, air hole 541, coupling lifting device 6, Y-shaped fork 61, through hole 611, fork driving assembly 62, air cylinder 621, rocker 622, pin 623, first bracket 624, second bracket 625, lifting sleeve 63, limit long hole 631, embedded convex ring 632, positioning post 633, rotating shaft 64, spring 641, limit bearing 642, limit bolt 643, bushing 65, driving mechanism 7, fixing frame 71, motor 72, driving wheel 73, belt 74. Detailed implementation manners

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0027] As Figures 1-11 Shown is the special cooling and purging equipment for the large disc of the rotary coating machine of the present utility model, including a housing 1, a large disc 2, a large disc bracket 3, a purging device 4, a dust collection guiding assembly 5, a coupling lifting device 6, and a driving mechanism 7. The large disc bracket 3 is placed inside the housing 1. A tabletop 31 is provided on the large disc bracket 3. Above the tabletop 31 is a purging chamber 11. A coupling lifting device 6 is provided on the tabletop 31. The coupling lifting device 6 is connected to the driving mechanism 7 below and is coupled to the bottom of the large disc above. The driving mechanism 7 drives the large disc 2 to rotate.

[0028] The dust collection and guiding assembly 5 includes an upper plate 51, a lower plate 52, a dust collection plate 53 and a dust collection bin 54. The upper plate 51 is connected to the top surface of the housing 1. The lower plate 52 is connected to the tabletop 31 while avoiding the large plate 52. The dust collection plate 53 is correspondingly arranged behind the large plate 2. The upper and lower edges of the dust collection plate 53 are welded to the upper plate 51 and the lower plate 52 respectively. The two side edges of the dust collection plate 53 are hermetically connected to the inner side surface of the housing 1. The middle part of the dust collection plate 53 is an arc-shaped dust collection area 531, which faces the large plate 2. The arc-shaped dust collection area 531 is covered with small holes 532. The back of the arc-shaped dust collection area 531 is hermetically connected to the dust collection bin 54. The dust collection bin 54 is conical, and a wind hole 541 is provided at the conical top of the dust collection bin 54. The dust collection and guiding assembly 5 collects the dust blown off from the large plate 2. There is a wind hole 541 passing through the housing behind the dust collection and guiding assembly 5, and the wind blown by the purging device 4 is discharged outwards from the wind hole 541 after passing through the large plate 2.

[0029] The purging device 4 is vertically arranged in the purging chamber 11. The purging device 4 is located in front of the large plate 2 and blows air towards the large plate 2 to blow off the dust on the large plate 2. There is a dust collection and guiding assembly 5 behind the large plate 2. Specifically, a purging device 4 is symmetrically arranged on both sides in front of the large plate 2. The purging device 4 includes an air duct 41 and a purging air knife 42. The air duct 41 is vertically arranged. The upper end of the air duct 41 is connected to the upper plate 51, and the lower end is connected to the lower plate 52. A row of purging air knives 42 is connected to the side of the air duct 41 opposite to the large plate 2. The purging air knives 42 are fan-shaped flat-mouth type, and the purging air knives 42 are arranged at equal intervals. The angle between the flat mouth of the purging air knife 42 and the axis of the large plate is 45 degrees. The purging air knife 42 and the large plate 2 form a 45-degree angle. The high-pressure gas blown out from the flat mouths of the whole row of purging air knives 42 covers all areas in the axial direction of the large plate, and the dust is blown off in cooperation with the rotation of the large plate. The dust removal effect is better than that of horizontal or vertical airflows. The blown-off dust is guided by the arc-shaped dust collection area 531 of the dust collection plate 53 and gathers here, and is collected into the dust collection bin 54 through the small holes 532. The dust collection effect is good. Since the blowing dust airflow finally blows out through the wind hole, the dust will not flow back into the purging chamber, and the dust removal effect is good without dust remaining.

[0030] The coupling lifting device 6 includes a Y-shaped fork 61, a fork driving assembly 62, a lifting sleeve 63 and a rotating shaft 64. The rotating shaft 64 is connected to the driving mechanism 7. The lifting sleeve 63 is sleeved on the upper end of the rotating shaft 64. A limit bearing 642 is provided in the middle of the rotating shaft 64. A spring 641 is provided between the lifting sleeve 63 and the limit bearing 642. A limit long hole 631 is axially provided on the circumferential surface of the lifting sleeve 63. A limit bolt 643 inserted into the limit long hole 631 is provided on the circumferential surface of the rotating shaft 64. The limit bolt 643 is movably matched with the limit long hole 631 to limit the axial lifting range of the lifting sleeve 63 on the rotating shaft 64. A bushing 65 is provided outside the lifting sleeve 63 and the limit bearing 642. The top surface of the bushing 65 is bolted to the table surface 31. The rotating shaft 64 is rotatably connected between the limit bearing 642 and the bushing 65; both sides of the front end of the Y-shaped fork 61 are hinged to the lifting sleeve 63, and the end of the handle of the Y-shaped fork 61 is hinged to the inner wall of the coupling hole 32 of the table surface. A through hole 611 is provided in the handle of the Y-shaped fork 61. The through hole 611 is an elliptical hole. One end of the fork driving assembly 62 is connected in the through hole 611. The fork driving assembly 62 drives the lifting sleeve 63 to move upward through the Y-shaped fork 61. The fork driving assembly 62 includes a cylinder 621, a rocker 622 and a pin 623. A first bracket 624 and a second bracket 625 are vertically provided at the bottom of the table surface. One end of the first bracket 624 is hinged to one end of the cylinder 621. The other end of the cylinder 621 is hinged to the lower end of the pin 623 through the rocker 622. The middle of the rocker 622 is hinged to the second bracket 625. The upper end of the pin 623 penetrates into and is hinged in the through hole of the Y-shaped fork 61. The cylinder 621 drives the pin 623 to move up and down through the rocker 622. The pin 623 supports the lifting sleeve 63 to move up and down through the Y-shaped fork 61.

[0031] A coupling hole 32 is provided in the middle of the table surface 31. Linear tracks 33 are provided on both sides of the coupling hole 32. The coupling lifting device 6 is positioned and connected to the bottom of the large plate 2 through the coupling hole 32. A positioning collar 21 is rotatably connected to the center of the bottom surface of the large plate 2. The positioning collar 21 drives the large plate 2 to rotate. Two positioning support plates 22 are fixedly provided on the bottom surface of the large plate 2. A plurality of rollers 23 are rotatably connected to the outer side surfaces of the positioning support plates 22. The rollers 23 on each positioning support plate 22 are connected to one linear track 33. The large plate 2 is pushed into the purging chamber 11 through the rollers 23. Two positioning blind holes 211 are provided in the positioning collar 21 on the bottom surface of the large plate 2. An embedded convex ring 632 and two positioning columns 633 are provided at the top of the lifting sleeve 63. While the embedded convex ring 632 is embedded into the positioning collar 21, the two positioning columns 633 are correspondingly inserted into the positioning blind holes 211.

[0032] The driving mechanism 7 includes a fixed frame 71, a motor 72, a driving wheel 73 and a belt 74. The fixed frame 71 is connected to the bottom of the tabletop 31. The motor 72 is connected to the fixed frame 71. A driving wheel 73 is provided at the output end of the motor. The driving wheel 73 is connected to the end of the rotating shaft 64 through the belt 74. The motor 72 drives the large plate to rotate through the driving wheel 73.

[0033] The operation process of the present utility model: Open the front side plate of the outer shell 1, and push the large plate 2 into the purging chamber 11. The rollers 23 on the two positioning support plates 22 at the bottom of the large plate are correspondingly and rotatably connected to the two linear tracks 33 on the tabletop 31 of the large plate support. When the large plate 2 is pushed to the middle of the purging chamber 11, it stops. The coupling lifting device 6 is started. The air cylinder 621 retracts, the rocker 622 swings, and the pin 623 is pushed upward. The pin 623 supports the Y-shaped fork 61 to lift upward. Both sides of the Y-shaped fork 61 support the lifting sleeve 63 to lift upward at the same time. The spring 641 in the compressed state supports the lifting sleeve 63 to move upward at the same time. The limit bolt 643 and the limit long hole 631 limit the upward movement distance of the lifting sleeve 63. When the lifting sleeve 63 contacts the positioning collar 21, rotate the large plate 2 so that the two positioning columns 633 are correspondingly inserted into the two positioning blind holes 211. The lifting sleeve 63 continues to move upward, so that the embedded convex ring 632 is embedded in the positioning collar 21. The motor 72 is started. The motor 72 drives the driving wheel 73 to rotate. The driving wheel 73 drives the rotating shaft 64 to move through the belt 74. The rotating shaft 64 drives the lifting sleeve 63 to rotate. The lifting sleeve 63 drives the large plate 2 to rotate. While the large plate 2 is rotating, the air duct 41 blows dust and cleans the rotating large plate 2 through the purging air knife 42. The blown dust is gathered and collected by the arc-shaped dust collection area 531 of the dust collection plate 53, and is blown into the dust collection bin 54 through the small holes 532 for collection. The air blown into the dust collection bin 54 is discharged outward through the air holes 541. After the dust blowing and cleaning is completed, the motor 72 stops. The air cylinder 621 is pushed out, and the coupling lifting device 6 retracts into the coupling hole 32. The lifting sleeve 63 and the positioning collar 21 are disengaged, and the large plate 2 is rolled out of the purging chamber 11.

[0034] The above are only several preferred embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes and substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present utility model should be covered by the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claims.

Claims

1. Special cooling and purging equipment for large plate of rotary coating machine, characterized by: It includes a shell, a large plate, a large plate bracket, a purge device, a dust collection guide component, a coupling lifting device and a driving mechanism. The large plate bracket is placed in the shell, a table is provided on the large plate bracket, a purge chamber is provided above the table, a coupling lifting device is provided on the table, the driving mechanism is connected to the lower part of the coupling lifting device, and the upper part is coupled to the bottom of the large plate, and the driving mechanism drives the large plate to rotate; The purging device is arranged in the purging chamber along the vertical direction. The purging device is located in front of the large plate. The purging device blows air towards the large plate to blow off the dust on the large plate. A dust collecting guide component is arranged behind the large plate. The dust collecting guide component collects the dust blown off the large plate. An air hole passing through the outer shell is arranged behind the dust collecting guide component. The air blown by the purging device passes through the large plate and is discharged outward from the air hole.

2. The special cooling and purging equipment for large disks of a rotary coating machine according to claim 1, characterized in that: The dust collecting guide assembly comprises an upper plate, a lower plate, a dust collecting plate and a dust collecting bin, the upper plate is connected to the top surface of the outer shell, the lower plate is connected to the table top avoiding the large plate, the dust collecting plate is correspondingly arranged behind the large plate, the upper and lower edges of the dust collecting plate are respectively welded to the upper plate and the lower plate, both sides of the dust collecting plate are sealed and connected to the inner side of the outer shell, the middle part of the dust collecting plate is an arc-shaped dust collecting area, the arc-shaped dust collecting area faces the large plate, the arc-shaped dust collecting area is covered with small holes, the back of the arc-shaped dust collecting area is sealed and connected to the dust collecting bin, the dust collecting bin is conical, and air holes are arranged on the top of the dust collecting bin cone.

3. The special cooling and purging equipment for large disks of a rotary coating machine according to claim 2 is characterized in that: A purge device is symmetrically provided on both sides in front of the large disk, and the purge device includes an air duct and a purge air knife. The air duct is vertically arranged, the upper end of the air duct is connected to the upper plate, and the lower end is connected to the lower plate. A row of purge air knives are connected to the side of the air duct opposite to the large disk. The purge air knives are fan-shaped with flat mouths, and the purge air knives are arranged at equal intervals. The angle between the flat mouth of the purge air knife and the axial direction of the large disk is 45 degrees.

4. The special cooling and purging equipment for large disks of a rotary coating machine according to claim 3 is characterized in that: A coupling hole is provided in the middle of the table top, and linear tracks are provided on both sides of the coupling hole. The coupling lifting device is positioned and connected to the bottom of the large plate through the coupling hole. A positioning shaft ring is rotatably connected to the center of the bottom surface of the large plate, and the positioning shaft ring drives the large plate to rotate. Two positioning support plates are fixedly provided on the bottom surface of the large plate, and a plurality of rollers are rotatably connected to the outer side surfaces of the positioning support plates. The rollers on each positioning support plate are connected to a linear track, and the large plate is pushed into the purge chamber through the rollers.

5. The special cooling and blowing equipment for large disk of the rotary coating machine according to claim 4 is characterized in that: The coupling lifting device comprises a Y-shaped fork, a fork driving assembly, a lifting sleeve and a rotating shaft, the rotating shaft is connected with the driving mechanism, the lifting sleeve is sleeved on the upper end of the rotating shaft, a limit bearing is provided in the middle of the rotating shaft, a spring is provided between the lifting sleeve and the limit bearing, a limit long hole is provided axially on the circumference of the lifting sleeve, a limit bolt plugged into the limit long hole is provided on the circumference of the rotating shaft, the limit bolt cooperates with the limit long hole to limit the axial lifting range of the lifting sleeve on the rotating shaft, a shaft sleeve is provided on the outer side of the lifting sleeve and the limit bearing, the top surface of the shaft sleeve and the table are connected by bolts, and the rotating shaft is rotatably connected by the limit bearing and the shaft sleeve; the front end of the Y-shaped fork is hinged with the lifting sleeve on both sides, the end of the Y-shaped fork handle is hinged with the inner wall of the table coupling hole, the Y-shaped fork handle is provided with a through hole, the through hole is an elliptical hole, one end of the fork driving assembly is connected in the through hole, and the fork driving assembly drives the lifting sleeve to move upward through the Y-shaped fork.

6. The special cooling and purging equipment for large disks of a rotary coating machine according to claim 5, characterized in that: The fork driving assembly includes a cylinder, a rocker and a pin. A first bracket and a second bracket are vertically arranged at the bottom of the table. The first bracket is hinged to one end of the cylinder, and the other end of the cylinder is hinged to the lower end of the pin through the rocker. The middle part of the rocker is hinged to the second bracket. The upper end of the pin is inserted into and hinged in the through hole of the Y-shaped fork. The cylinder drives the pin to move up and down through the rocker, and the pin supports the lifting sleeve to move up and down through the Y-shaped fork.

7. The special cooling and purging equipment for large disks of a rotary coating machine according to claim 6, characterized in that: The positioning collar on the bottom of the large plate is provided with two positioning blind holes, and the top of the lifting sleeve is provided with an embedded convex ring and two positioning columns. When the embedded convex ring is embedded in the positioning collar, the two positioning columns and the positioning blind holes are correspondingly plugged.

8. The special cooling and purging equipment for large disks of a rotary coating machine according to claim 7, characterized in that: The driving mechanism includes a fixing frame, a motor, a driving wheel and a belt. The fixing frame is connected to the bottom of the table, the motor is connected to the fixing frame, a driving wheel is provided at the output end of the motor, the driving wheel is connected to the end of the rotating shaft through a belt, and the motor drives the large plate to rotate through the driving wheel.

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