A gasket coating apparatus and method

Abstract

The present application belongs to the technical field of gasket processing, and specifically discloses a coating equipment and method for sealing gaskets, which comprises a processing table, a conveyor and a drying chamber. A first frame and a second frame are installed on the upper end face of the processing table. The first frame and the second frame are connected end to end. The drying chamber is installed inside the second frame. The conveyor is arranged inside the first frame and the second frame. A support is fixedly installed on one side of the outside of the first frame. A sliding frame is connected to the support through a lifting assembly arranged inside the support. A corrosion-resistant hard pipe is inserted into the inside of the sliding frame. A liquid feeding mechanism is arranged at one end of the corrosion-resistant hard pipe. Four nozzles are installed at equal distances in the horizontal direction inside the corrosion-resistant hard pipe. The present application realizes the recycling of paint, ensures uniform coating and stable coating, is suitable for various specifications of gaskets, facilitates the maintenance of the nozzles, improves the processing efficiency and quality, and reduces the cost.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of gasket processing, and specifically discloses a sealing gasket coating device and method. BACKGROUND

[0002] The sealing gasket is a sealing spare part used in places where fluid flows in machinery, equipment and pipelines, and is used as a material for sealing. The sealing gasket is made of metal or non-metal plate-shaped materials through cutting, stamping or cutting processes, and is used for sealing connection between pipelines and sealing connection between machine parts of machines and equipment. According to the material, the sealing gasket can be divided into metal sealing gaskets and non-metal sealing gaskets. The metal sealing gaskets include copper gaskets, stainless steel gaskets, iron gaskets and aluminum gaskets. The non-metal sealing gaskets include asbestos gaskets, non-asbestos gaskets, paper gaskets and rubber gaskets. The sealing gasket plays an important role in modern industrial enterprises, and the sealing quality directly affects the continuity of production, the safety of property, energy saving and environmental protection, and the physical and mental health of people. Therefore, the development of the sealing gasket is increasingly valued by people.

[0003] In order to prolong the service life of the sealing gasket and enhance the corrosion resistance of the sealing gasket in harsh environments, the industry usually coats the outer surface of the gasket with water-based chromium-free zinc-aluminum paint. The paint uses zinc powder and aluminum powder as the core rust-preventing component and uses water as the solvent, and does not contain toxic substances such as chromate, and has environmental protection and rust prevention performance, and is the mainstream choice for current gasket corrosion treatment.

[0004] In the existing coating process, when the nozzle mechanism is used to spray paint, due to the lack of effective shielding and recycling structure, the diffusion range of the paint far exceeds the actual area of the gasket, and a large amount of paint is lost without being attached to the surface of the gasket. Not only does this increase the cost of raw materials, but it also requires additional treatment of waste paint, which increases the environmental burden. At the same time, during the paint spraying process, part of the paint will adhere to the outer surface of the nozzle. The existing equipment can only clean the internal flow channel of the nozzle through self-flushing function, and cannot effectively clean the residual paint in the outer cavity of the nozzle. The residual paint accumulated for a long time will condense into block-shaped substances, causing nozzle blockage and uneven spraying, directly affecting the coating quality, and frequent disassembly of the nozzle is required for maintenance, which reduces the processing efficiency. Therefore, a sealing gasket coating device and method are proposed to solve the above problems. SUMMARY

[0005] The utility model aims at solving the problems in the prior art and provides a kind of coating equipment of sealing gasket, including processing table, conveyor and drying chamber, first frame and second frame are installed on the upper end surface of processing table, first frame and second frame are connected head to tail, drying chamber is installed in the second frame, conveyor is arranged in the inside of first frame and second frame, bracket is fixedly installed on the outside of first frame, lifting assembly is connected with sliding frame in the inside of bracket by being set, corrosion-resistant hard pipe is inserted in the inside of sliding frame, liquid supply mechanism is provided at the one end of corrosion-resistant hard pipe, four nozzles are installed at the lower portion of the inside of corrosion-resistant hard pipe along horizontal direction at equal distance, annular shell is jointly installed with the both ends of the outside of corrosion-resistant hard pipe by being set, hopper frame is fixedly installed on the inner side bottom wall of annular shell, inner frame is arranged in the inside of annular shell and above hopper frame, inner frame is fixedly installed in the inside of fixed part upper side, and annular shell is located at the lower portion of the periphery of four nozzles.

[0006] In the above technical solution, further, the lifting assembly includes a motor fixedly installed at the lower portion of the inside of the bracket, a screw rod fixedly installed at the output end of the motor, a top seat rotatably sleeved with the screw rod at the upper portion of the one end of the screw rod away from the motor, the top seat fixedly installed at the upper portion of the outside of the first frame, the one end of the sliding frame threadedly engaged with the outside of the screw rod, and the sliding frame externally slidably attached to the inner wall of the bracket.

[0007] In the above technical solution, further, the liquid supply mechanism includes a flexible hose communicatively installed at the one end of the corrosion-resistant hard pipe, a metering pump communicatively installed at the one end of the flexible hose away from the corrosion-resistant hard pipe, a liquid storage barrel communicatively installed at the suction end of the metering pump, and the liquid storage barrel located at one side of the processing table.

[0008] In the above technical solution, further, the fixed part includes a fixed rod fixedly sleeved with the one end of the outside of the corrosion-resistant hard pipe, the bottom end of the fixed rod connected with the inner side bottom wall of the annular shell, the inner frame installed at the upper side of the inside of the fixed rod, a suction pipe communicatively installed at the one end of the inside of the annular shell, a suction pump communicatively installed at the one end of the suction pipe away from the annular shell, a return pipe communicatively installed at the lower end of the suction pump, the one end of the return pipe away from the suction pump connected with the liquid storage barrel, and the fixed frame fixedly connected with the outer wall of the processing table by being fixedly sleeved with the outside of the suction pump.

[0009] In the above technical solution, further, two groups of slip rings are slidably installed on the outside of the corrosion-resistant hard pipe, the two groups of slip rings are respectively located between adjacent two nozzles on the same side, a frame is fixedly installed at the lower end of the slip ring, L-shaped blocks are symmetrically installed at the both sides of the inside of the frame, a rotating shaft rotatably inserted between the two L-shaped blocks on the same side, two gears crosswise sleeved with the outside of the rotating shaft, an installation shell sleeved with the portion of the rotating shaft between the two L-shaped blocks, and cleaning cotton fixedly installed on the outer wall of the installation shell.

[0010] In the above technical scheme, further, the two groups of the sliding ring top are fixedly installed with a hanging rod, a bidirectional telescopic rod is arranged between the two hanging rods, and a clamping plate outside the bidirectional telescopic rod is connected to the inner top wall of the sliding frame through a fixing sleeve.

[0011] In the above technical scheme, further, the two ends of the frame are fixedly installed with an installation plate outside and corresponding to the position of the gear, a gas cylinder is clamped in the installation plate, a rack is fixedly installed at the telescopic end of the gas cylinder, and the rack is meshed and connected with the gear at the corresponding position.

[0012] A method of a sealing gasket coating device, comprising the following use steps:

[0013] S1: placing the sealing gasket to be coated at the feeding end of the conveyor, so that the center of the gasket is aligned with the center line of the conveyor belt;

[0014] S2: starting the conveyor, moving the gasket to the coating area in the first frame according to the preset speed; when the gasket moves to the position directly below the nozzle, starting the metering pump, conveying the water-based chromium-free zinc-aluminum coating in the liquid storage barrel to the four nozzles through the telescopic hose and the corrosion-resistant hard pipe, and spraying the coating on the outer surface of the gasket after atomization; in the spraying process, the annular shell blocks the outward expansion of the sprayed liquid, and the excess sprayed liquid slides along the inner wall of the annular shell to the hopper frame, and is temporarily stored at the bottom of the annular shell after being preliminarily filtered by the inner frame;

[0015] S3: the coated gasket enters the drying chamber in the second frame with the conveyor, the temperature of the drying chamber is set to 120-150 DEG C, and the coating on the surface of the gasket is cured; the cured gasket moves to the discharge end with the conveyor and is collected to the finished product storage area;

[0016] S4: after the coating operation is completed, the metering pump and the conveyor are turned off, the drying chamber is turned off after the temperature of the drying chamber decreases to room temperature, the excess sprayed liquid temporarily stored in the annular shell is recovered, and the total power supply of the equipment is turned off after checking that all parts are not damaged.

[0017] Compared with the prior art, the present application has the following beneficial effects:

[0018] 1. The annular shell is arranged below the nozzles to form a barrier, which can effectively block the outward diffusion of the coating during spraying, and avoid waste caused by the diffusion of the coating outside the gasket area. The excess sprayed liquid slides along the inner wall of the annular shell to the hopper frame, and is temporarily stored at the bottom of the annular shell after being guided by the inner frame. With the cooperation of the suction pipe, the suction pump and the return pipe, the excess sprayed liquid temporarily stored can be pumped back to the liquid storage barrel, realizing the recycling of the coating, greatly reducing the coating consumption cost, and reducing the environmental pollution caused by the waste coating.

[0019] 2. The lifting assembly is driven by a motor to rotate a screw, which in turn moves a slide that is threaded into the screw up and down, thereby adjusting the height of the anti-corrosion rigid pipe and the nozzle. The distance between the nozzle and the gasket can be flexibly adjusted according to the thickness and specifications of the gaskets, ensuring optimal coating operation and meeting the coating needs of various gasket specifications, thus improving the equipment's versatility and applicability.

[0020] 3. The cleaning structure, consisting of a slip ring, frame, and cleaning cotton, uses a cylinder to move a rack when paint residue appears on the nozzle. This movement drives the gear and shaft to rotate, changing the cleaning cotton from a vertical to a horizontal position, parallel to the lower end face of the nozzle. The position of the slip ring is then adjusted by a bidirectional telescopic rod, bringing the cleaning cotton closer to the nozzle. This allows for reciprocating wiping and cleaning of the nozzle's outer surface, effectively removing paint residue adhering to the nozzle's outer cavity. This prevents paint from accumulating and forming lumps that clog the nozzle and affect spraying performance, ensuring the normal operation of the nozzle, reducing equipment failures, and lowering maintenance costs. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is another schematic diagram of the overall connection structure of the present invention;

[0023] Figure 3 This is a schematic diagram of the connection structure between the lifting mechanism, the annular shell, and the slide of the present invention;

[0024] Figure 4 This is a schematic diagram of the disassembled connection structure between the annular shell, inner frame, and bucket-shaped frame of the present invention;

[0025] Figure 5 This is a schematic diagram of the connection structure between the slip ring and the corrosion-resistant rigid pipe of the present invention;

[0026] Figure 6 This is a schematic diagram of the partial structural connection between the slip ring, frame, and mounting shell of the present invention;

[0027] Figure 7 This is a schematic diagram of the connection structure between the rotating shaft, gear, and mounting housing of the present invention.

[0028] In the figure: 1, processing platform; 2, conveyor; 3, support; 4, first frame; 5, second frame; 6, drying chamber; 7, sliding frame; 8, flexible hose; 9, liquid storage barrel; 10, fixing frame; 11, return pipe; 12, top seat; 13, clamping plate; 14, annular shell; 15, metering pump; 16, fixed rod; 17, corrosion-resistant hard pipe; 18, two-way telescopic rod; 19, boom; 20, screw; 21, motor; 22, suction pump; 23, inner frame; 24, bucket-shaped frame; 25, slip ring; 26, nozzle; 27, rack; 28, cleaning cotton; 29, air cylinder; 30, frame; 31, L-shaped block; 32, mounting shell; 33, gear; 34, rotating shaft; 35, mounting plate; 36, suction pipe. DETAILED DESCRIPTION

[0029] In order to enable the above-mentioned objects, features and advantages of the present application to be more clearly understood, the present application will be further described below with reference to the drawings and specific embodiments.

[0030] In the following description, a large number of specific details are set forth in order to facilitate a thorough understanding of the present application, but the present application can also be implemented in other ways different from those described herein, and therefore the present application is not limited to the specific embodiments disclosed below.

[0031] As Figures 1-7 shown in a kind of gasket coating equipment, including processing platform 1, conveyor 2 and drying chamber 6, the upper end surface of processing platform 1 is equipped with first frame 4 and second frame 5, first frame 4 and second frame 5 are connected head to tail, drying chamber 6 is installed in second frame 5, conveyor 2 is through and is arranged in the inside of first frame 4 and second frame 5, first frame 4 is fixedly installed with support 3 on one side of the outside, support 3 is connected with sliding frame 7 in the inside by setting lifting assembly, corrosion-resistant hard pipe 17 is inserted in the inside of sliding frame 7, corrosion-resistant hard pipe 17 is provided with liquid inlet mechanism on one end, four nozzles 26 are installed at equal intervals in the inside of corrosion-resistant hard pipe 17 along horizontal direction, annular shell 14 is commonly installed on the both ends of corrosion-resistant hard pipe 17 by setting fixing piece, bucket-shaped frame 24 is fixedly installed on the inside bottom wall of annular shell 14, inner frame 23 is arranged in the inside of annular shell 14 and above bucket-shaped frame 24, inner frame 23 is fixedly installed in the inside upper side of fixing piece, annular shell 14 is located in the periphery below four nozzles 26.

[0032] Lifting assembly includes motor 21 fixedly installed in the inside lower side of support 3, screw 20 is fixedly installed on the output end of motor 21, top seat 12 is rotatably sleeved on the upper side of the end of screw 20 away from motor 21, top seat 12 is fixedly installed on the outside upper side of first frame 4, one end of sliding frame 7 is threadedly matched with the outside of screw 20, and the both sides of the outside of sliding frame 7 are slidably attached to the inner wall of support 3;

[0033] In this embodiment, the main function of the top seat 12 is to limit and support the top end of the screw rod 20, to ensure the stability of the screw rod 20 during rotation, and to avoid the screw rod 20 from deviating;

[0034] Specifically, when it is necessary to adjust the distance between the nozzle 26 and the gasket according to the thickness of the gasket to be coated, the motor 21 outputs power to the fixedly installed screw rod 20, drives the screw rod 20 to rotate around its axis, and the outer two sides of the sliding frame 7 are in sliding fit with the inner wall of the support 3. The rotating movement of the screw rod 20 is converted into the linear lifting movement of the sliding frame 7 along the inner wall of the support 3. The sliding frame 7 in turn drives the anticorrosion hard pipe 17 and the nozzle 26 below to synchronously lift until the nozzle 26 reaches the optimal coating height matched with the gasket.

[0035] The liquid feeding mechanism comprises a telescopic hose 8 connected and installed at one end of the anticorrosion hard pipe 17. The end of the telescopic hose 8 away from the anticorrosion hard pipe 17 is connected and installed with a metering pump 15. The suction end of the metering pump 15 is connected and installed with a liquid storage barrel 9. The liquid storage barrel 9 is located at one side of the machining table 1.

[0036] In this embodiment, the main function of the telescopic hose 8 is to satisfy the lifting of the anticorrosion hard pipe 17 and the metering pump 15, to avoid damage to the pipeline caused by the lifting of the anticorrosion hard pipe 17, and to ensure the continuity of the paint delivery.

[0037] The metering pump 15 can accurately control the extraction and delivery amount of the paint, which can not only avoid waste caused by excessive delivery of the paint, but also prevent the influence on the coating quality caused by insufficient delivery.

[0038] Specifically, when it is necessary to deliver the paint to the nozzle 26, the metering pump 15 is started. The metering pump 15 extracts the water-based chromium-free zinc-aluminum paint from the liquid storage barrel 9 located at one side of the machining table 1 through the suction end. Under the pressure of the metering pump 15, the paint is delivered to the telescopic hose 8 connected thereto. The telescopic hose 8 delivers the paint to the anticorrosion hard pipe 17 connected at the other end. Finally, the paint is atomized by the nozzle 26 below the anticorrosion hard pipe 17 and sprayed on the surface of the gasket.

[0039] The fixing member comprises a fixing rod 16 fixedly sleeved at one end outside the anticorrosion hard pipe 17. The bottom end of the fixing rod 16 is connected with the inner bottom wall of the annular shell 14. The inner frame 23 is installed above the inner side of the fixing rod 16. The annular shell 14 is connected and installed with a suction pipe 36 at one end inside. The end of the suction pipe 36 away from the annular shell 14 is connected and installed with a suction pump 22. The lower end of the suction pump 22 is connected and installed with a return pipe 11. The end of the return pipe 11 away from the suction pump 22 is connected with the liquid storage barrel 9. The suction pump 22 is fixedly connected with the outer wall of the machining table 1 through the fixedly sleeved fixing frame 10.

[0040] In this embodiment, the suction pipe 36 is used as a channel for the paint backflow, and it is the key component connecting the annular shell 14 and the suction pump 22, which transports the excess paint temporarily stored in the annular shell 14 to the suction pump 22.

[0041] Specifically, in the coating operation, the fixed rod 16 fixedly connected to the outer end of the anti-corrosion hard pipe 17 stably connects the anti-corrosion hard pipe 17 and the annular shell 14, and provides mounting support for the inner frame 23. During the spraying process, the excess paint slides along the inner wall of the annular shell 14, is collected by the bucket-shaped frame 24, and is temporarily stored at the bottom of the annular shell 14. When it is necessary to recover the excess paint, the suction pump 22 is started, the paint temporarily stored at the bottom of the annular shell 14 is sucked into the suction pump 22 through the connected suction pipe 36, and is transported back to the liquid storage barrel 9 through the backflow pipe 11 connected to the lower end of the suction pump 22, so as to realize the recycling of the paint. The suction pump 22 is fixed to the outer wall of the processing table 1 through the externally fixed bracket 10, so as to ensure the stability during the operation.

[0042] The anti-corrosion hard pipe 17 is externally slidably installed with two groups of slip rings 25, and the two groups of slip rings 25 are respectively located between adjacent two nozzles 26 on the same side. The lower end of the slip ring 25 is fixedly installed with a frame 30, and the inside of the frame 30 is symmetrically installed with L-shaped blocks 31 on both sides. The two L-shaped blocks 31 on the same side are rotatably inserted with a rotating shaft 34, and the rotating shaft 34 is externally and staggeringly sleeved with a gear 33. The part of the rotating shaft 34 externally located between the two L-shaped blocks 31 is sleeved with a mounting shell 32, and the mounting shell 32 is fixedly installed with a cleaning cotton 28 on the outer wall.

[0043] The two groups of slip rings 25 are fixedly installed with a hanging rod 19 on the top, and the two hanging rods 19 are jointly provided with a bidirectional telescopic rod 18, and the bidirectional telescopic rod 18 is externally and fixedly connected to the inner side top wall of the sliding frame 7 through the clamping plate 13.

[0044] Specifically, when the coating operation is completed, if the paint residue is attached to the outer surface of the nozzle 26, the cleaning structure can be used for cleaning. Since the sliding ring 25 is slidingly installed at the outer ends of the anti-corrosion hard pipe 17 and between the two groups of nozzles 26, the sliding ring 25 can be pushed to slide along the anti-corrosion hard pipe 17 to drive the fixedly installed frame 30 at the lower end to move to the nozzle 26. The two sides of the frame 30 inside are rotatably supported by the L-shaped block 31. When cleaning is needed, the rotating shaft 34 can be driven to rotate, and the rotating shaft 34 drives the synchronously rotating installation shell 32 outside the middle sleeve to rotate, and the cleaning cotton 28 fixedly installed on the outer wall of the installation shell 32 rotates, rotates to the lower side of the nozzle 26, and then contacts and wipes the outer surface of the nozzle 26 to remove the paint residue. At the same time, the gears 33 outside the two rotating shafts 34 are staggered to achieve the linkage rotation of the two rotating shafts 34, so that the two cleaning cottons 28 are synchronously cleaned to improve the cleaning effect. When it is necessary to adjust the position of the sliding ring 25 to clean different nozzles 26, the bidirectional telescopic rod 18 is started. Since the bidirectional telescopic rod 18 is fixedly installed on the inner side top wall of the sliding frame 7 through the fixed sleeve of the clamping plate 13 outside the middle, the two ends of the bidirectional telescopic rod 18 are respectively connected with the hanger rods 19 fixedly installed at the top of the two groups of sliding rings 25, and when the bidirectional telescopic rod 18 is telescoped, the sliding ring 25 will be driven to slide along the outer side of the anti-corrosion hard pipe 17 through the hanger rod 19. By controlling the telescopic length of the bidirectional telescopic rod 18, the position of the sliding ring 25 can be accurately adjusted, so that the frame 30 and the cleaning cotton 28 can be accurately moved to the nozzle 26 to be cleaned to achieve precise cleaning of the nozzle 26.

[0045] The installation plate 35 is fixedly installed at the position corresponding to the gear 33 outside the two ends of the frame 30, and the air cylinder 29 is clamped inside the installation plate 35. The rack 27 is fixedly installed at the telescopic end of the air cylinder 29, and the rack 27 is meshingly connected with the gear 33 at the corresponding position;

[0046] Specifically, when it is necessary to drive the rotating shaft 34 to rotate the cleaning cotton 28 to clean the nozzle 26, the air cylinder 29 clamped inside the installation plate 35 outside the two ends of the frame 30 is started. The rack 27 fixedly installed at the telescopic end of the air cylinder 29 moves in the horizontal direction. Since the rack 27 is meshingly connected with the gear 33 outside the rotating shaft 34 at the corresponding position, the linear motion of the rack 27 is converted into the rotary motion of the gear 33, and the gear 33 further drives the rotating shaft 34 to rotate between the L-shaped blocks 31. The rotating shaft 34 drives the installation shell 32 and the cleaning cotton 28 outside to synchronously rotate, so that the cleaning cotton 28 contacts and wipes the outer surface of the nozzle 26 to complete the cleaning of the nozzle 26. By controlling the telescopic stroke of the air cylinder 29, the movement distance of the rack 27 can be controlled, and the rotating angle of the gear 33 and the rotating shaft 34 can be controlled to adjust the rotating amplitude of the cleaning cotton 28 to adapt to different cleaning requirements.

[0047] A method of a sealing gasket coating apparatus, comprising the following steps of use:

[0048] S1: Place the sealing gasket to be coated at the feeding end of the conveyor 2, align the center of the gasket with the center line of the conveyor 2 belt;

[0049] S2: Start the conveyor 2, according to the preset speed, drive the gasket to the coating area in the first frame 4; when the gasket moves directly below the nozzle 26, start the metering pump 15, and the water-based chromium-free zinc-aluminum paint in the liquid storage barrel 9 is delivered to the four nozzles 26 through the telescopic hose 8 and the corrosion-resistant hard pipe 17. The paint is sprayed on the outer surface of the gasket after atomization; during the spraying process, the annular shell 14 blocks the expansion of the sprayed liquid, and the excess sprayed liquid slides along the inner wall of the annular shell 14 to the hopper-shaped frame 24, and is temporarily stored at the bottom of the annular shell 14 after preliminary filtration by the inner frame 23;

[0050] S3: The coated gasket enters the drying chamber 6 in the second frame 5 with the conveyor 2, and the temperature of the drying chamber 6 is set to 120-150℃ for curing treatment of the gasket surface paint; the cured gasket moves to the discharge end with the conveyor 2 and is collected to the finished product storage area;

[0051] S4: After the coating operation is completed, the metering pump 15 and the conveyor 2 are turned off, the drying chamber 6 is turned off after the temperature drops to room temperature, the excess sprayed liquid temporarily stored in the annular shell 14 is recovered, and the total power supply of the equipment is turned off after checking that all parts are undamaged.

[0052] Place the sealing gasket to be coated at the feeding end of the conveyor 2, ensure that the center of the gasket is aligned with the center line of the conveyor 2 belt, and lay the foundation for uniform coating in the future. At this time, all parts of the equipment are in the initial standby state, the water-based chromium-free zinc-aluminum paint is ready in the liquid storage barrel 9, the drying chamber 6 has not been started, and all electrical elements are in a state of waiting for power-on;

[0053] According to the thickness specification of the sealing gasket to be coated, start the motor 21 inside the bracket 3, the output end of the motor 21 drives the screw 20 to rotate, because the end of the screw 20 away from the motor 21 is limited and fixed on the outside of the first frame 4 by the top seat 12, and one end of the sliding frame 7 is threadedly connected with the outside of the screw 20, and the other end of the sliding frame 7 is slidably connected with the inner wall of the bracket 3, the rotation of the screw 20 will be converted into the up-and-down sliding of the sliding frame 7 along the inner wall of the bracket 3, and the sliding frame 7 drives the corrosion-resistant hard pipe 17 and the nozzle 26 below the corrosion-resistant hard pipe 17 inside to synchronously ascend and descend, until the nozzle 26 and the annular shell 14 reach a suitable coating distance from the surface of the gasket, and then the motor 21 is turned off, completing the adjustment of the coating height;

[0054] The conveyor 2 is started, and the gasket is moved to the coating area in the first frame 4 at a preset speed. When the gasket moves to the position directly below the nozzle 26, the metering pump 15 is started, and the water-based chromium-free zinc-aluminum paint is drawn from the liquid storage barrel 9 through the suction end of the metering pump 15. The pressurized paint is delivered to the inside of the corrosion-resistant hard pipe 17 through the flexible hose 8. The paint entering the corrosion-resistant hard pipe 17 flows along the lumen, and is finally atomized by the four nozzles 26 installed horizontally and equidistantly below the inside of the corrosion-resistant hard pipe 17, and is uniformly sprayed on the outer surface of the gasket below. In the spraying process, the annular shell 14 installed at both ends of the fixed rod 16 outside the corrosion-resistant hard pipe 17 is located below the outside of the nozzle 26, which can effectively block the outward diffusion of the sprayed liquid. The excess sprayed liquid will slide along the inner wall of the annular shell 14 to the hopper frame 24 fixedly installed on the inner bottom wall of the annular shell 14, and is temporarily stored on the inside bottom of the annular shell 14. The excess sprayed liquid temporarily stored at the bottom of the annular shell 14 can be subsequently pumped into the suction pump 22 through the suction pipe 36, and is delivered back to the liquid storage barrel 9 through the return pipe 11 connected to the lower end of the suction pump 22, so as to realize the recycling of the paint. The gasket after coating continues to move with the conveyor 2, enters the drying chamber 6 installed in the second frame 5, and the drying chamber 6 is started, and the temperature is set to 120-150 DEG C. Under this temperature condition, the paint on the surface of the gasket gradually solidifies to form a stable protective coating. After solidification, the gasket continues to move with the conveyor 2 to the discharge end, and is finally collected in the finished product storage area.

[0055] After the coating operation is completed, the nozzle 26 is cleaned. The cylinder 29 fixedly installed in the inner end of the installation plate 35 at both ends of the frame 30 is started, the telescopic end of the cylinder 29 drives the rack 27 to move, the rack 27 is engaged with the gear 33 sleeved on the outside of the rotating shaft 34, and then the rotating shaft 34 is rotated between the two L-shaped blocks 31 on the same side, the installation shell 32 sleeved on the outside of the rotating shaft 34 is rotated, and the cleaning cotton 28 fixedly installed on the outer wall of the installation shell 32 changes from the horizontal folding state to the parallel state with the lower end surface of the nozzle 26. The two-way telescopic rod 18 is started to drive the two hangers 19 to move, so that the sliding ring 25 slides along the outside of the corrosion-resistant hard pipe 17, the frame 30 fixedly installed on the lower end of the sliding ring 25 moves to the nozzle 26, and then the reciprocating pushing wipes and cleans the outer surface of the nozzle 26.

[0056] The basic principles, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited to the above embodiments, and the above embodiments and descriptions in the specification are only the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application.

Claims

1. An apparatus for coating gaskets, comprising a processing table (1), a conveyor (2) and a drying chamber (6), characterized in that: The upper end face of the processing table (1) is provided with a first frame (4) and a second frame (5), the first frame (4) and the second frame (5) are connected end to end, the drying chamber (6) is installed inside the second frame (5), the conveyor (2) is arranged inside the first frame (4) and the second frame (5), a support (3) is fixedly installed on one side of the outer side of the first frame (4), a sliding frame (7) is connected to the inside of the support (3) through the lifting assembly, a corrosion-resistant hard pipe (17) is inserted into the inside of the sliding frame (7), a liquid feeding mechanism is arranged at one end of the corrosion-resistant hard pipe (17), four nozzles (26) are installed at equal intervals in the horizontal direction at the lower part of the inside of the corrosion-resistant hard pipe (17), annular shells (14) are jointly installed on both ends of the outer side of the corrosion-resistant hard pipe (17) through the fixing members, a hopper frame (24) is fixedly installed on the inner side bottom wall of the annular shell (14), an inner frame (23) is arranged inside the annular shell (14) and above the hopper frame (24), the inner frame (23) is fixedly installed on the upper part of the inside of the fixing member, and the annular shell (14) is located below the periphery of the four nozzles (26). Two groups of sliding rings (25) are slidingly installed on the outer side of the corrosion-resistant hard pipe (17), the two groups of sliding rings (25) are respectively located between adjacent two nozzles (26) on the same side, an arch frame (30) is fixedly installed on the lower end of the sliding ring (25), L-shaped blocks (31) are symmetrically installed on the inner sides of the arch frame (30), a rotating shaft (34) is rotatably inserted between the two L-shaped blocks (31) on the same side, gears (33) are crossly sleeved on the outer sides of the two rotating shafts (34), an installation shell (32) is sleeved on the part of the rotating shaft (34) between the two L-shaped blocks (31), cleaning cotton (28) is fixedly installed on the outer wall of the installation shell (32), a hanger rod (19) is fixedly installed on the top of each of the two groups of sliding rings (25), a bidirectional telescopic rod (18) is arranged between the two hanger rods (19), the bidirectional telescopic rod (18) is connected to the inner side top wall of the sliding frame (7) through the clamping plate (13) fixedly sleeved on the outer side thereof, mounting plates (35) are fixedly installed on the outer sides of the two ends of the arch frame (30) and correspond to the positions of the gears (33), air cylinders (29) are clamped in the inner sides of the mounting plates (35), racks (27) are fixedly installed on the telescopic ends of the air cylinders (29), and the racks (27) are in meshing connection with the gears (33) at the corresponding positions.

2. An apparatus for coating a gasket according to claim 1, wherein: The lifting assembly comprises a motor (21) fixedly installed on the inner bottom of the support (3), a screw rod (20) fixedly installed on the output end of the motor (21), and a top seat (12) rotatably sleeved on the upper part of the end of the screw rod (20) away from the motor (21), the top seat (12) is fixedly installed on the outer top of the first frame (4), one end of the sliding frame (7) is in threaded connection with the outer side of the screw rod (20), and the outer sides of the two sides of the sliding frame (7) are in sliding fit with the inner wall of the support (3).

3. The gasket coating apparatus of claim 1, wherein: The liquid feeding mechanism comprises a flexible hose (8) connected to one end of the corrosion-resistant hard pipe (17), and a metering pump (15) is connected to the end of the flexible hose (8) away from the corrosion-resistant hard pipe (17), the suction end of the metering pump (15) is connected to a liquid storage barrel (9), and the liquid storage barrel (9) is located on one side of the processing table (1).

4. An apparatus for coating a gasket according to claim 3, wherein: The fixing member comprises a fixing rod (16) fixedly sleeved to one end of the corrosion-resistant hard pipe (17) outside, and the bottom end of the fixing rod (16) is connected to the inner bottom wall of the annular shell (14), the inner frame (23) is installed on the inner side of the fixing rod (16) above, the annular shell (14) is connected to a suction pipe (36) at one end inside, the suction pipe (36) is connected to a suction pump (22) at the end away from the annular shell (14), the suction pump (22) is connected to a return pipe (11) at the lower end, the end of the return pipe (11) away from the suction pump (22) is connected to the liquid storage barrel (9), and the suction pump (22) is fixedly connected to the outer wall of the processing table (1) through the fixedly sleeved fixing frame (10).

5. A method of applying a gasket to a coating apparatus as claimed in any one of claims 1 to 4, characterised in that, The use steps comprise the following steps: S1: Place the sealing gasket to be coated on the feeding end of the conveyor (2), and align the center of the gasket with the center line of the conveyor (2) belt; S2: Start the conveyor (2), and drive the gasket to move to the coating area in the first frame (4) according to the preset speed; when the gasket moves directly below the nozzle (26), start the metering pump (15), and deliver the water-based chromium-free zinc-aluminum paint in the liquid storage barrel (9) to the four nozzles (26) through the flexible hose (8) and the corrosion-resistant hard pipe (17), and the paint is sprayed on the outer surface of the gasket after atomization; during the spraying process, the annular shell (14) blocks the expansion of the sprayed liquid, and the excess sprayed liquid slides along the inner wall of the annular shell (14) to the hopper frame (24), and is temporarily stored at the bottom of the annular shell (14) after preliminary filtration by the inner frame (23); S3: The coated gasket enters the drying chamber (6) in the second frame (5) along with the conveyor (2), the temperature of the drying chamber (6) is set to 120-150℃, and the surface paint of the gasket is cured; the cured gasket moves to the discharge end along with the conveyor (2) and is collected to the finished product storage area; S4: After the coating operation is completed, the metering pump (15) and the conveyor (2) are turned off, the drying chamber (6) is turned off after the temperature of the drying chamber (6) decreases to room temperature, the excess sprayed liquid temporarily stored in the annular shell (14) is recovered, and the total power supply of the equipment is turned off after checking that all parts are not damaged.

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