Automatic masking system for wet-on-wet flange of water heater inner tank

Abstract

An automatic wet-enameling shielding system for a water heater inner tank flange includes a conveyor rail for transporting a shielding magnetic ring for the inner tank flange located on the conveyor rail. The shielding magnetic ring has an inner hole and an outer ring surface. The inner diameter of the inner hole substantially matches the inner diameter of the lower end of the water heater inner tank. The outer diameter of the outer ring surface is larger than the inner diameter and the outer diameter of the lower end of the water heater inner tank, completely shielding the flange hole of the lower end cover. A magnetic ring mounting mechanism, located in the middle of the conveyor rail, is used to mount the shielding magnetic ring onto the lower end cover of the water heater inner tank, completely shielding the flange hole of the lower end cover. A magnetic ring dismounting mechanism, located after the mounting mechanism, is used to remove the shielding magnetic ring from the lower end cover of the water heater inner tank. This invention has the advantage of automatically shielding the lower end cover of the inner tank to prevent enamel from entering the flange hole of the lower end cover.

Description

Technical Field

[0001] This invention relates to equipment used in the production process of water heater inner tanks, and more particularly to an automatic shielding system for wet-coating the flange of a water heater inner tank. Background Technology

[0002] Currently, during the wet enamel coating process for water heater inner tanks, excess enamel coating on the inner wall of the inner tank will slowly flow down the inner wall. Since there is a flange hole on the lower end cover of the inner tank, the excess enamel often flows into the inside of the flange hole. After the product is dried, the enamel inside the flange of the lower end cover will solidify, which will affect the later installation and the appearance of the product, resulting in defective products and increased production costs.

[0003] The cleaning of the glaze inside the flange hole of the lower end cover is generally done manually by scraping the glaze, but the dust generated during scraping is harmful to human health. Another method is to manually mask the glaze before the coating process, and then manually remove the mask after the coating is completed. Neither of these methods is conducive to automated production, and they also increase labor costs. Therefore, there is an urgent need for a new, automated processing method. Summary of the Invention

[0004] The purpose of this invention is to provide an automatic shielding system for the wet enamel coating of the inner tank flange of a water heater that can automatically shield the lower end cover of the inner tank to prevent enamel from entering the flange hole of the lower end cover.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An automatic shielding system for wet-enameled flanges of a water heater inner tank is provided, comprising:

[0007] A conveyor rail line, which has a rotary structure, is used to transport the inner flange shielding magnetic ring located on the conveyor rail line.

[0008] The inner liner flange shielding magnetic ring has an inner hole and an outer ring surface. The inner diameter of the inner hole of the magnetic ring basically matches the inner diameter of the lower port of the water heater inner liner. The outer diameter of the outer ring surface of the magnetic ring is larger than the inner diameter and the outer diameter of the lower port of the water heater inner liner, completely covering the flange hole of the lower end cover.

[0009] The magnetic ring mounting mechanism, located in the middle of the conveyor rail, is used to install the inner tank flange shielding magnetic ring on the lower end cover of the water heater inner tank and completely shield the flange hole of the lower end cover.

[0010] The magnetic ring lowering mechanism, located after the magnetic ring uppering mechanism, is used to remove the inner tank flange shielding magnetic ring from the lower end cover of the water heater inner tank.

[0011] As an improvement to the present invention, the present invention also includes a magnetic ring cleaning device and a magnetic ring drying device, wherein the magnetic ring cleaning device and the magnetic ring drying device are sequentially located between the magnetic ring lowering mechanism and the magnetic ring uppering mechanism.

[0012] As an improvement to the present invention, the conveyor rail includes a chain and four sprockets, which form a rectangular rotary structure. One sprocket is the driving sprocket, and the other three sprockets are driven sprockets. The driving sprocket is driven by a motor.

[0013] As an improvement to the present invention, magnetic ring fixing fixtures are provided on the chain at predetermined intervals.

[0014] As an improvement to the present invention, the magnetic ring fixing fixture includes at least three evenly arranged wing plates, each wing plate having an inclined surface, all wing plates forming a frustum shape, and a connecting post for the conveying ground rail is provided at the lower part of the frustum shape.

[0015] As an improvement to the present invention, the at least three blocks are four blocks.

[0016] As an improvement to the present invention, the inner flange shielding magnetic ring is molded from rubber and magnetic powder.

[0017] As an improvement to the present invention, the magnetic ring mounting mechanism includes a first lifting mechanism and a second lifting mechanism, which are disposed opposite to each other on both sides of the conveying ground rail, for lifting the inner flange shielding magnetic ring.

[0018] As an improvement to the present invention, the first lifting mechanism includes a first lifting cylinder, and a first magnetic ring limiting block is provided on the push rod of the first lifting cylinder. The first magnetic ring limiting block has a first arc-shaped limiting support plate. The second lifting mechanism includes a second lifting cylinder, and a second magnetic ring limiting block is provided on the push rod of the second lifting cylinder. The second magnetic ring limiting block has a second arc-shaped limiting support plate. The first arc-shaped limiting support plate and the second arc-shaped limiting support plate are arranged opposite to each other to support the inner flange shielding magnetic ring.

[0019] As an improvement to the present invention, a first mounting plate is provided between the first lifting cylinder and the first magnetic ring limiting block. The first mounting plate is disposed on the top rod of the first lifting cylinder and is connected to the first magnetic ring limiting block through a first connecting rod. A first spring for buffering the first magnetic ring limiting block is provided on the first connecting rod. A second mounting plate is provided between the second lifting cylinder and the second magnetic ring limiting block. The second mounting plate is disposed on the top rod of the second lifting cylinder and is connected to the second magnetic ring limiting block through a second connecting rod. A second spring for buffering the second magnetic ring limiting block is provided on the second connecting rod.

[0020] As an improvement to the present invention, the magnetic ring unloading mechanism includes a first gripping mechanism and a second gripping mechanism, which are disposed opposite to each other on both sides of the conveying ground rail line for gripping the inner flange shielding magnetic ring.

[0021] As an improvement to the present invention, the first gripping mechanism includes a first magnetic ring gripping block, a first magnetic ring gripping block driving cylinder, and a first lifting cylinder for driving the first magnetic ring gripping block driving cylinder to rise or fall, wherein the first magnetic ring gripping block has a first concave ring; the second gripping mechanism includes a second magnetic ring gripping block, a second magnetic ring gripping block driving cylinder, and a second lifting cylinder for driving the second magnetic ring gripping block driving cylinder to rise or fall, wherein the second magnetic ring gripping block has a second concave ring; the first concave ring and the second concave ring are arranged opposite to each other to clamp the suspended edge of the inner flange shielding magnetic ring.

[0022] As an improvement to the present invention, the magnetic ring cleaning device includes a cleaning device housing, which covers a corresponding section of the conveying ground rail. Inside the cleaning device housing, there are a lower nozzle for rinsing the lower bottom surface of the magnetic ring shielded by the inner flange and an upper nozzle for rinsing the upper bottom surface of the magnetic ring shielded by the inner flange.

[0023] As an improvement to the present invention, the magnetic ring drying device includes a drying device housing, which covers a corresponding section of the conveying ground rail. Inside the drying device housing, there is a lower nozzle for drying the lower bottom surface of the inner flange shielding magnetic ring and an upper nozzle for drying the upper bottom surface of the inner flange shielding magnetic ring.

[0024] This invention uses a shielding method to prevent glaze from entering the inner liner end cap flange hole, resulting in a cleaner product appearance and a reduction in defective products. At the same time, the shielding plate is reusable, automatically cleaned and dried, reducing the need for manual cleaning later, lowering the workload of workers, and is more conducive to automated production lines, thus reducing product production costs. Attached Figure Description

[0025] Figure 1 This is a top-view planar structural diagram of an embodiment of the present invention.

[0026] Figure 2 yes Figure 1 A schematic diagram of the three-dimensional structure.

[0027] Figure 3 yes Figure 1 A schematic diagram of the structure of the underground transport rail line.

[0028] Figure 4 This is a schematic diagram of the flat structure of the inner flange shielding magnetic ring in this invention.

[0029] Figure 5 yes Figure 1 A three-dimensional structural diagram of the magnetic ring upper component mechanism.

[0030] Figure 6 yes Figure 1 A three-dimensional structural diagram of the magnetic ring lower component mechanism.

[0031] Figure 7 yes Figure 1 A schematic diagram of the planar structure of the magnetic ring cleaning equipment.

[0032] Figure 8 yes Figure 7 A schematic diagram of the side structure.

[0033] Figure 9 yes Figure 1 A schematic diagram of the planar structure of the magnetic ring drying device. Detailed Implementation

[0034] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0035] Please see Figures 1-9 , Figures 1-9 The disclosed feature is an automatic shielding system for the wet-enameled flange of a water heater inner tank, comprising:

[0036] Conveying ground rail 1, the conveying ground rail 1 having a rotary structure, is used to transmit the inner flange shielding magnetic ring 2 located on the conveying ground rail 1 (see...). Figure 4 );

[0037] The inner liner flange shielding magnetic ring 2 has an inner hole 21 and an outer ring surface 22. The inner diameter of the inner hole 21 basically matches the inner diameter of the lower port of the water heater inner liner, so as to facilitate the glazing system to supply glaze into the water heater inner liner. The outer diameter of the outer ring surface 22 is larger than the inner diameter and forms a suspension edge with the outer diameter of the lower port of the water heater inner liner, so as to facilitate the removal of the inner liner flange shielding magnetic ring 2 by the magnetic ring lowering mechanism 4. The inner liner flange shielding magnetic ring 2 completely covers the flange hole of the lower end cover.

[0038] The magnetic ring mounting mechanism 3 is located in the middle of the conveying rail line 1. It is used to install the inner tank flange shielding magnetic ring 2 on the lower end cover of the water heater inner tank and completely shield the flange hole of the lower end cover. In this embodiment, there are 3 magnetic ring mounting mechanisms 3, which can process three water heater inner tanks at the same time. Of course, the magnetic ring mounting mechanism 3 can also be set to 1-5 as needed.

[0039] The magnetic ring lowering mechanism 4 is located after the magnetic ring uppering mechanism 3 and is used to remove the inner tank flange shielding magnetic ring 2 from the lower end cover of the water heater inner tank. Similarly, in this embodiment, there are 3 magnetic ring lowering mechanisms 4, which can process three water heater inner tanks at the same time. Of course, the magnetic ring lowering mechanism 4 can also be set to 1-5 as needed.

[0040] Preferably, the present invention further includes a magnetic ring cleaning device 5 and a magnetic ring drying device 6, which are located sequentially between the magnetic ring lowering mechanism 4 and the magnetic ring uppering mechanism 3; for safety reasons, a protective cover 8 is also provided in the exposed section of the conveying ground rail 1.

[0041] Preferably, the conveyor rail 1 includes a chain 11 and four sprockets 12, which form a rectangular rotary structure. One sprocket is a driving sprocket 121, and the other three sprockets are driven sprockets 122. The driving sprocket 121 is driven by a motor.

[0042] Preferably, magnetic ring fixing fixtures 7 are provided on the chain 11 at predetermined intervals.

[0043] Preferably, the magnetic ring fixing fixture 7 includes at least three evenly arranged wing plates 71, each wing plate 71 having a slope 711, and all wing plates 71 forming a frustum shape. A connecting post 72 for connection with the conveying ground rail 1 is provided at the lower part of the frustum shape. The frustum shape structure allows for the use of magnetic rings 2 with inner flanges of different inner diameters, improving the versatility of the invention. In this embodiment, the at least three wing plates are actually four wing plates.

[0044] Preferably, the inner flange shielding magnetic ring 2 is made of rubber and magnetic powder by molding, which has the advantages of being soft and having good adsorption.

[0045] Please see Figure 5 The magnetic ring mounting mechanism 3 includes a first lifting mechanism 31 and a second lifting mechanism 32, which are arranged opposite to each other on both sides of the conveying ground rail line 1, and are used to lift the inner flange shielding magnetic ring 2.

[0046] Preferably, the first lifting mechanism 31 includes a first lifting cylinder 311, and a first magnetic ring limiting block 312 is provided on the push rod of the first lifting cylinder 311. The first magnetic ring limiting block 312 has a first arc-shaped limiting support plate 313. The second lifting mechanism 32 includes a second lifting cylinder 321, and a second magnetic ring limiting block 322 is provided on the push rod of the second lifting cylinder 321. The second magnetic ring limiting block 322 has a second arc-shaped limiting support plate 323. The first arc-shaped limiting support plate 313 and the second arc-shaped limiting support plate 323 are arranged opposite to each other to support the inner flange shielding magnetic ring 2.

[0047] Preferably, a first mounting plate 314 is provided between the first lifting cylinder 311 and the first magnetic ring limiting block 312. The first mounting plate 314 is disposed on the top rod of the first lifting cylinder 311 and is connected to the first magnetic ring limiting block 312 through a first connecting rod. A first spring 315 for buffering the first magnetic ring limiting block 312 is provided on the first connecting rod. A second mounting plate 324 is provided between the second lifting cylinder 321 and the second magnetic ring limiting block 322. The second mounting plate 324 is disposed on the top rod of the second lifting cylinder 321 and is connected to the second magnetic ring limiting block 322 through a second connecting rod. A second spring 325 for buffering the second magnetic ring limiting block 322 is provided on the second connecting rod.

[0048] Please see Figure 6 The magnetic ring unloading mechanism 4 includes a first gripping mechanism 41 and a second gripping mechanism 42, which are arranged opposite to each other on both sides of the conveying ground rail line 1, and are used to grip the inner flange shielding magnetic ring 2.

[0049] Preferably, the first gripping mechanism 41 includes a first magnetic ring gripping block 411, a first magnetic ring gripping block driving cylinder 412, and a first lifting cylinder 413 for driving the first magnetic ring gripping block driving cylinder 412 to rise or fall. The first magnetic ring gripping block 411 has a first concave ring 4111. The second gripping mechanism 42 includes a second magnetic ring gripping block 421, a second magnetic ring gripping block driving cylinder 422, and a second lifting cylinder 423 for driving the second magnetic ring gripping block driving cylinder 422 to rise or fall. The second magnetic ring gripping block 421 has a second concave ring 4211. The first concave ring 4111 and the second concave ring 4211 are arranged opposite to each other to clamp the suspended edge of the inner flange shielding magnetic ring 2.

[0050] Please see Figure 7 and Figure 8The magnetic ring cleaning device 5 includes a cleaning device housing 51, which covers a corresponding section of the conveyor rail 1. Inside the cleaning device housing 51 are a lower nozzle 52 for rinsing the lower bottom surface of the inner flange-shielded magnetic ring 2 and an upper nozzle 53 for rinsing the upper bottom surface of the inner flange-shielded magnetic ring 2. In this embodiment, the cleaning device housing 51 is mounted on a cleaning device base 54. Furthermore, from... Figure 8 As can be seen, the side of the cleaning equipment housing 51 of the present invention has a magnetic ring and a fixture inlet / outlet 55.

[0051] Please see Figure 9 The magnetic ring drying device 6 includes a drying device housing 61, which covers the corresponding section of the conveying ground rail line 1. Inside the drying device housing 61, there is a lower nozzle 62 for drying the lower bottom surface of the inner flange shielding magnetic ring 2 and an upper nozzle 63 for drying the upper bottom surface of the inner flange shielding magnetic ring 2. The drying device housing 61 is provided with a drying device base frame 64.

[0052] The workflow of this invention is as follows: On the magnetic ring fixing fixture 7 of the conveying ground rail line 1, a certain number of inner flange shielding magnetic rings 2 are placed (along the running direction of the conveying ground rail line 1, there are no inner flange shielding magnetic rings 2 between the upper part position and the lower part position, and there are inner flange shielding magnetic rings 2 between the lower part position and the upper part position), and the conveying ground rail line 1 runs in a stepping mode. When the conveyor rail line 1 starts running, the magnetic ring fixing fixture 7 with the inner liner flange shielding magnetic ring 2 moves to the designated fixed position of the upper part and stops. The upper part mechanism 3 rises, lifting the inner liner flange shielding magnetic ring 2 and detaching it from the magnetic ring fixing fixture 7. At this time, the upper part mechanism 3 remains in the lifting state. After the robot picks up the inner liner workpiece, the robot brings the lower end cover flange opening of the inner liner workpiece close to it and attaches it to the inner liner flange shielding magnetic ring 2 on the upper part mechanism 3, so that the inner liner flange shielding magnetic ring 2 is attracted to the lower end cover flange opening of the inner liner workpiece. At this time, the inner liner flange shielding magnetic ring 2 just covers the flange hole on the flange opening. Then, the inner liner flange shielding magnetic ring 2 enters the coating station together with the inner liner workpiece; the upper part mechanism 3 descends and resets. After the inner liner workpiece is coated, the robot gripper picks up the inner liner workpiece and places it on the other side of the ground rail conveyor line 1 to the unloading station, and keeps it stationary. The inner liner flange shielding magnetic ring 2 also arrives at the magnetic ring unloading gripping position along with the inner liner workpiece, and the inner liner flange shielding magnetic ring 2 is within the gripping range of the magnetic ring unloading mechanism 4. At this time, the magnetic ring lowering mechanism 4 grabs the inner flange shielding magnetic ring 2. Under the action of the lifting cylinder 42, the gripping clamp 41 of the magnetic ring lowering mechanism 4 is raised to a certain height above the magnetic ring fixing fixture 7 of the conveying ground rail line 1. After it is in position, the clamping cylinder 411 of the magnetic ring lowering mechanism 4 extends, driving the magnetic ring contour clamps 412 on both sides of the mechanism to retract towards the middle at the same time. After the clamping cylinder 411 is in position, it grabs the inner flange shielding magnetic ring 2 at the lower end of the inner workpiece without affecting the workpiece. After the clamping is completed, the lifting cylinder 42 of the mechanism descends, driving the clamping cylinder 411, the contour clamp 412, and the inner flange shielding magnetic ring 2 to move downward together, placing the inner flange shielding magnetic ring 2 on the magnetic ring fixing fixture 7. The clamping cylinder 411 then begins to retract, releasing the inner flange shielding magnetic ring 2, and the inner flange shielding magnetic ring 2 is placed stably on the magnetic ring fixing fixture 7.After the inner flange shielding magnetic ring 2 is placed stably, the conveyor rail 1 begins to move in a step-by-step manner, conveying the inner flange shielding magnetic ring 2 with glaze adhering to it into the cleaning equipment 5. The cleaning equipment 5 uses a circulating water spray method to wash off the glaze on the inner flange shielding magnetic ring 2. Both sides of the inner flange shielding magnetic ring 2 are washed simultaneously. After the inner flange shielding magnetic ring 2 is washed, the conveyor rail 1 moves to the next station, conveying the cleaned inner flange shielding magnetic ring 2 into the drying equipment 6. The drying equipment 6 uses compressed air, blown out with nozzles, to blow off the water droplets on the surface of the inner flange shielding magnetic ring 2, achieving the purpose of surface drying. After the inner flange shielding magnetic ring 2 is dried, the conveyor rail 1 conveys the inner flange shielding magnetic ring 2 to the next position. Finally, the inner flange shielding magnetic ring 2 is moved to the position of the upper part mechanism 3, completing one cycle.

[0053] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An automatic shielding system for wet-enameled flanges of a water heater inner tank, characterized in that, include: The conveying ground rail (1) has a rotary structure and is used to transmit the inner flange shielding magnetic ring (2) located on the conveying ground rail (1). The inner liner flange shielding magnetic ring (2) has an inner hole (21) and an outer ring surface (22). The inner diameter of the inner hole (21) of the magnetic ring is basically matched with the inner diameter of the lower port of the water heater inner liner. The outer diameter of the outer ring surface (22) of the magnetic ring is larger than the inner diameter and the outer diameter of the lower port of the water heater inner liner, completely covering the flange hole of the lower end cover. The magnetic ring mounting mechanism (3) is located in the middle of the conveying ground rail (1) and is used to mount the inner tank flange shielding magnetic ring (2) on the lower end cover of the water heater inner tank and completely shield the flange hole of the lower end cover. The magnetic ring mounting mechanism (3) includes a first lifting mechanism (31) and a second lifting mechanism (32). The first lifting mechanism (31) and the second lifting mechanism (32) are arranged opposite to each other on both sides of the conveying ground rail (1) and are used to lift the inner tank flange shielding magnetic ring (2). The magnetic ring lowering mechanism (4) is located after the magnetic ring uppering mechanism (3) and is used to remove the inner tank flange shielding magnetic ring (2) from the lower end cover of the water heater inner tank. The magnetic ring lowering mechanism (4) includes a first gripping mechanism (41) and a second gripping mechanism (42). The first gripping mechanism (41) and the second gripping mechanism (42) are arranged opposite to each other on both sides of the conveying ground rail (1) and are used to grip the inner tank flange shielding magnetic ring (2).

2. The automatic shielding system for wet-enameled flanges of a water heater inner tank according to claim 1, characterized in that, It also includes a magnetic ring cleaning device (5) and a magnetic ring drying device (6), which are located sequentially between the magnetic ring lowering mechanism (4) and the magnetic ring uppering mechanism (3).

3. The automatic shielding system for wet-enameled flanges of a water heater inner tank according to claim 1 or 2, characterized in that, The conveyor rail (1) includes a chain (11) and four sprockets (12). The chain (11) and the four sprockets (12) form a rectangular rotary structure. One of the sprockets is the driving sprocket (121), and the other three sprockets are the driven sprockets (122). The driving sprocket (121) is driven by a motor.

4. The automatic shielding system for wet-enameled flanges of a water heater inner tank according to claim 3, characterized in that, Magnetic ring fixing fixtures (7) are provided on the chain (11) at predetermined intervals.

5. The automatic shielding system for wet-enameled flanges of a water heater inner tank according to claim 4, characterized in that, The magnetic ring fixing fixture (7) includes at least three evenly arranged wing plates (71), each wing plate (71) has an inclined surface (711), all wing plates (71) form a frustum, and a connecting post (72) for the conveying ground rail (1) is provided at the lower part of the frustum.

6. The automatic shielding system for wet-enameled flanges of a water heater inner tank according to claim 1 or 2, characterized in that, The inner flange shielding magnetic ring (2) is made of rubber and magnetic powder by molding.

7. The automatic shielding system for wet-enameled flanges of a water heater inner tank according to claim 2, characterized in that, The magnetic ring cleaning device (5) includes a cleaning device housing (51), which covers the corresponding section of the conveying ground rail (1). Inside the cleaning device housing (51) are a lower nozzle (52) for rinsing the lower bottom surface of the inner flange shielding magnetic ring (2) and an upper nozzle (53) for rinsing the upper bottom surface of the inner flange shielding magnetic ring (2).

8. The automatic shielding system for wet-enameled flanges of a water heater inner tank according to claim 2, characterized in that, The magnetic ring drying device (6) includes a drying device housing (61), which covers the corresponding section of the conveying ground rail (1). Inside the drying device housing (61) are provided a lower nozzle (62) for drying the lower bottom surface of the inner flange shielding magnetic ring (2) and an upper nozzle (63) for drying the upper bottom surface of the inner flange shielding magnetic ring (2).

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