A water washing device

Abstract

The application relates to the technical field of laser etching of stainless steel plates, in particular to a water washing device which comprises a water washing pool, a placing table arranged in the water washing pool and a control cabinet, further comprises a first circulating system suitable for providing and discharging ionized water into the water washing pool, a second circulating system suitable for providing and discharging passivation liquid into the water washing pool, a scraper mechanism located above the placing table and a heating mechanism arranged in the interior of the placing table; the scraper mechanism comprises a lifting frame, a scraper blade installed through the lifting frame and a walking unit, the scraper blade has a certain length in the x-axis direction, the lifting frame can drive the scraper blade to lift along the z-axis direction so that the scraper blade contacts or moves away from the placing table, and the walking unit can drive the lifting frame to move along the y-axis direction. The water washing device has the advantages of high production efficiency and low etching surface damage risk without the need of multiple times of transferring the plate.

Description

Technical Field

[0001] This application relates to the technical field of laser etching of stainless steel plates, and more specifically, to a water washing device suitable for washing stainless steel plates after laser etching, which is a post-processing device. Background Technology

[0002] Laser etching technology is known to use a focused laser beam to ablate the material on a substrate surface, forming desired patterns or text. It offers high-precision processing, is suitable for creating complex shapes and intricate patterns, and boasts advantages such as clean linear edges, no side etching, and environmental friendliness. Therefore, this technology is widely used in the surface treatment of stainless steel sheets, such as for elevator car panels, markings and patterns on medical instruments, and pads and wires on printed circuit boards (PCBs).

[0003] After laser etching, stainless steel sheets require a water washing process on the etched surface, which is considered a post-processing step. For example, the rinsing and passivation treatment described in Chinese invention patent CN105149793B, entitled "Laser Art Carving Process for Stainless Steel Sheets," involves rinsing the stainless steel sheet twice in plasma water and drying it after laser art carving. Then, it is soaked in a passivation solution for 8-12 minutes, and finally rinsed three times in plasma water and dried.

[0004] Currently, to complete the water washing process of stainless steel plates, the stainless steel plates need to be transferred to a water washing line first, such as the production line described in Chinese Utility Model Patent No. CN207628806U entitled "A Rapid Cleaning and Drying Production Line for Stainless Steel Plates"; after the first water washing, the stainless steel plates are transferred to an immersion tank, such as the immersion tank described in Chinese Utility Model Patent No. CN211227352U entitled "An Oil Removal Immersion Tank for Stainless Steel Plates", where only the chemical agent needs to be replaced with a passivating solution; finally, the stainless steel plates are transferred back to the water washing line for a second water washing and drying.

[0005] It can be seen that the existing water washing process is relatively complex, and the multiple transfers result in low production efficiency. The transfer process also increases the risk of damage to the etched surface. Utility Model Content

[0006] The purpose of this application is to provide a water washing device to solve the problems of low production efficiency and high risk of etched surface damage caused by multiple transfers required in the water washing process in the prior art. The specific technical solution adopted is as follows:

[0007] A washing device includes a washing tank, a platform disposed in the washing tank, and a control cabinet. It also includes a first circulation system for supplying and discharging ionized water into the washing tank, a second circulation system for supplying and discharging passivation solution into the washing tank, a scraper mechanism located above the platform, and a heating mechanism disposed inside the platform. The scraper mechanism includes a lifting frame, a scraper blade mounted via the lifting frame, and a traveling unit. The scraper blade has a certain length in the x-axis direction. The lifting frame can drive the scraper blade to move up and down in the z-axis direction to contact or move away from the platform. The traveling unit can drive the lifting frame to move in the y-axis direction.

[0008] Preferably, the length of the scraper is not less than the width of the platform in the x-axis direction.

[0009] Preferably, the scraper is a soft scraper.

[0010] Preferably, the traveling unit is a gantry frame.

[0011] Preferably, the lifting frame includes a horizontal plate and multiple synchronous pneumatic rods; guide blocks are provided at both ends of the horizontal plate, and the guide blocks can cooperate with the guide grooves on the vertical beam of the traveling unit; the multiple synchronous pneumatic rods are installed through the horizontal beam of the traveling unit, and their telescopic ends are fixedly connected to the horizontal plate; the scraper is fixedly installed on the bottom surface of the horizontal plate.

[0012] Preferably, a pair of backing strips are fixedly provided on the shelf, and the pair of backing strips have a certain distance between them in the y-axis direction.

[0013] Preferably, the first circulation system includes a plurality of nozzles arranged on one side wall of the washing pool and along the y-axis, an ion water source connected to the nozzles via pipelines, a first outlet on the bottom surface of the washing pool, and an ion water recovery system connected to the first outlet via pipelines.

[0014] Preferably, the nozzle is a high-pressure nozzle, and the axial direction of the nozzle has an acute angle of 0° to 5° with the horizontal plane of the platform.

[0015] Preferably, the second circulation system includes a plurality of water inlets arranged along the y-axis on one side wall of the washing tank, a passivation liquid supply source connected to the water inlet pipes, a second water outlet opened on the bottom surface of the washing tank, and a passivation liquid recovery system connected to the second water outlet pipes.

[0016] Preferably, the bottom surface of the washing pool is inclined, and the first outlet of the first circulation system and the second outlet of the second circulation system are located on the lower side of the bottom surface of the washing pool.

[0017] Preferably, the x-axis direction, the y-axis direction, and the z-axis direction are perpendicular to each other.

[0018] A water washing device using the technical solution of this application does not require multiple transfers of plates, thus having the advantages of high production efficiency and low risk of damage to the etched surface. Attached Figure Description

[0019] The accompanying drawings, which form part of this application, are used to provide further explanation of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0020] Figure 1 This is a schematic diagram of a water washing device provided in an embodiment of this application.

[0021] Figure 2 This is a cross-sectional structural schematic diagram of a water washing device provided in an embodiment of this application.

[0022] Figure 3 This is a top view schematic diagram of a water washing device provided in an embodiment of this application.

[0023] Figure 4 This is a schematic diagram of a scraper mechanism provided in an embodiment of this application.

[0024] Among them, 1. Washing pool, 2. Storage platform, 3. First circulation system, 31. Sprayer, 32. First water outlet, 4. Second circulation system, 41. Water inlet, 42. Second water outlet, 5. Scraper mechanism, 51. Lifting frame, 52. Scraper blade, 53. Walking unit, 511. Horizontal plate, 512. Synchronous air rod, 513. Guide block, 531. Guide groove, 6. Heating mechanism, 7. Backing bar. Detailed Implementation

[0025] The technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this application or its application or use. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. Example

[0026] Reference Figure 1The washing device shown includes a washing tank 1, a platform 2 disposed in the washing tank 1 and a control cabinet, and also includes a first circulation system 3 for supplying and discharging ionized water into the washing tank 1, a second circulation system 4 for supplying and discharging passivation liquid into the washing tank 1, a scraper mechanism 5 located above the platform 2, and a heating mechanism 6 disposed inside the platform 2.

[0027] The washing tank 1 is a waterproof brick structure tank of existing technology. For example, it includes four side walls and a bottom surface. To facilitate the installation and connection of electrical circuits and pipes, the bottom surface is preferably raised. For easy drainage, the bottom surface is inclined, for example, at an angle of 1° to 2° to the horizontal plane. Furthermore, to prevent the passivation solution from chemically affecting the walls of the washing tank 1, an acid-resistant silicone protective coating can be applied to the inner wall of the washing tank 1. The washing tank 1 has a certain width in the x-axis direction, a certain length in the y-axis direction, and a certain height in the z-axis direction.

[0028] The shelf 2 is a hollow shelf of existing technology, fixedly set in the center of the washing pool 1, with its bottom sealed to the bottom surface of the washing pool 1. For example, it has a sealed shell structure, with the shelf walls and surface made of double-layer alloy plates, and heat-conducting particles filled between the double-layer alloy plates. The shelf 2 has a certain width in the x-axis direction, a certain length in the y-axis direction, and a certain height in the z-axis direction. The height of the shelf 2 is lower than the height of the washing pool 1.

[0029] The storage platform 2 is equipped with a heating mechanism 6, which can be an existing electric heating element or an oil heating element. It is controlled by a switch and connected to an external power source or high-temperature hot oil tank via the bottom of the washing basin 1. The switch of the heating mechanism 6 is electrically connected to the control cabinet for control. The heating mechanism 6 can heat the panels on the storage platform 2.

[0030] Specifically, the scraper mechanism 5 includes a lifting frame 51, a scraper 52 mounted on the lifting frame 51, and a traveling unit 53. The scraper 52 has a certain length in the x-axis direction, and its length is not less than the width of the platform in the x-axis direction. The scraper 52 is screwed onto the lifting frame 51, so that the lifting frame 51 can drive the scraper 52 to move up and down in the z-axis direction so that the scraper 52 contacts or moves away from the platform 2. At the same time, the traveling unit 53 can drive the lifting frame 51 to move in the y-axis direction.

[0031] With the above structure, after the board is placed on the platform 2, the first circulation system 3 can supply deionized water to the washing tank 1. Once the level of the deionized water is higher than the surface of the board, the scraper 52 moves or reciprocates along the y-axis, causing the deionized water to flow on the surface of the board, forming a rinsing flow and achieving a rinsing effect. Subsequently, the first circulation system 3 discharges the deionized water from the washing tank 1, and the scraper 52 descends along the z-axis until it contacts the surface of the board, while simultaneously moving along the y-axis to scrape off excess deionized water from the surface of the board. The heating mechanism 6 can heat the board to dry the deionized water on its surface, thus completing the first water washing process. Because the deionized water on the surface of the board is scraped off by the scraper 52, the drying efficiency is high. The second circulation system 4 provides passivation solution to the washing tank 1. After the passivation solution level is above the surface of the workpiece, it is left to stand for a period of time (e.g., 8-10 minutes) to achieve the passivation soaking effect. Subsequently, the second circulation system 4 discharges the passivation solution from the washing tank, and the scraper 52 descends along the z-axis until it contacts the surface of the workpiece, while simultaneously moving along the y-axis to scrape off excess passivation solution from the surface of the workpiece, thereby completing the passivation treatment. The first circulation system 3 repeats the operation to complete the second washing treatment.

[0032] Therefore, the water washing device provided in this application does not require multiple transfers of the plates, thus having the advantages of high production efficiency and low risk of damage to the etched surface.

[0033] To prevent the scraper blade 52 from damaging the surface of the plate when scraping away deionized water or passivation solution, the scraper blade 52 should be made of a soft material, such as a soft scraper made of flexible Noryl resin or modified acrylic resin, with a hardness preferably of 55 to 60 A (expressed on the Shore A scale).

[0034] In this embodiment, the walking unit 53 is any type of gantry crane in the prior art. Of course, in some other embodiments, the walking unit 53 can also be a prior art system such as a servo screw system that can realize reciprocating forward and backward movement.

[0035] The lifting frame 51 includes a horizontal plate 511 and multiple synchronous pneumatic rods 512. Guide blocks 513 are provided at both ends of the horizontal plate 511, and the guide blocks 513 can cooperate with guide grooves 531 on the vertical beam of the traveling unit 53 (i.e., the gantry). Multiple synchronous pneumatic rods 512 are screwed onto the horizontal beam of the traveling unit 53, and their telescopic ends are screwed and fixedly connected to the horizontal plate 511. The multiple synchronous pneumatic rods 512 are controlled by a control cabinet. Thus, through the synchronous extension and retraction of the multiple synchronous pneumatic rods 512, the horizontal plate 511 and the scraper 52 can be raised and lowered along the z-axis. The scraper 52 is fixedly installed on the bottom surface of the horizontal plate 512 by screwing.

[0036] The first circulation system 3 includes a plurality of nozzles 31 arranged on one side wall of the washing pool 1 along the y-axis, an ion water source connected to the nozzles 31 by pipeline, a first outlet 32 ​​opened on the bottom surface of the washing pool 1, and an ion water recovery system connected to the first outlet 32 ​​by pipeline.

[0037] The nozzle 31 is a high-pressure nozzle, and the axial direction of the nozzle 31 has an acute angle of 0° to 5° with the horizontal plane of the platform. The angle shown in the illustration of this embodiment is 0°. The pressure of the nozzle 31 is 0.5MPa to 0.8MPa, and should not be too high or too low. The ionized water source can be a water tank containing ionized water, and the water tank is connected to the nozzle 31 through a water pipe, a solenoid valve, and a pressure pump. The first outlet 32 ​​is controlled to open and close by a solenoid valve. The first outlet 32 ​​is connected to the ionized water recovery system through a water pipe. The ionized water recovery system can be a water tank for storing ionized water or a water tank with a purification system. Both sets of solenoid valves and the pressure pump are connected to the control cabinet to control the opening and closing of the nozzle 31 and the first outlet 32 ​​and the water pressure through the operation of the control cabinet.

[0038] The second circulation system 4 includes multiple water inlets 41 arranged along the y-axis on one side wall of the washing tank 1, a passivation liquid supply source connected to the water inlets 41 by pipes, a second water outlet 42 opened on the bottom surface of the washing tank 1, and a passivation liquid recovery system connected to the second water outlet 42 by pipes.

[0039] Inlet 41 is a standard outlet; multiple outlets are provided to improve the efficiency of the passivation solution supply. The passivation solution source can be a reagent tank containing the passivation solution, connected to inlet 41 via corrosion-resistant water pipes, solenoid valves, and a pressure pump. The second outlet 42 is controlled by a corrosion-resistant special solenoid valve (e.g., a diaphragm solenoid valve). The second outlet 42 is connected to a passivation solution recovery system via corrosion-resistant water pipes; this system contains the reagent tank for storing the passivation solution. Both sets of solenoid valves and the pressure pump are connected to a control cabinet, allowing operation of the control cabinet to control the opening and closing of inlet 41 and the second outlet 42, as well as the water pressure.

[0040] Preferably, a level gauge capable of feeding back the real-time liquid level to the control cabinet is fixedly installed on the side wall of the washing tank 1, so as to determine the liquid addition amount of the first circulation system 3 and the second circulation system 4 through the level gauge.

[0041] In addition, to prevent the plate from moving due to the scraping action of the scraper 52, a pair of backing strips 7 are fixedly provided on the platform 2 by screws or welding. The pair of backing strips 7 have a certain distance in the y-axis direction, and the distance should be greater than the length of the plate to be processed.

[0042] Meanwhile, in order to improve the drainage efficiency of the first outlet 32 ​​and the second outlet 42, the bottom surface of the washing pool 1 is inclined, and the first outlet 32 ​​and the second outlet 42 are opened on the lower side of the bottom surface of the washing pool.

[0043] In this embodiment, the x-axis, y-axis, and z-axis are perpendicular to each other. In other embodiments, the x-axis, y-axis, and z-axis may have angles required for their respective application scenarios.

[0044] In this embodiment, the control cabinet can be any type of existing technology, as long as it can realize the action control of solenoid valves, pressure pumps, and pneumatic rods, such as a PLC control cabinet.

[0045] The working principle of a water washing device according to this application is as follows.

[0046] (1) First water washing treatment: After the board is placed on the platform 2, the first circulation system 3 provides deionized water to the washing tank 1, and the nozzle 31 sprays deionized water onto the surface of the board to achieve a rinsing effect; after the liquid level of the deionized water is higher than the surface of the board, the scraper 52 moves or reciprocates along the y-axis to make the deionized water flow on the surface of the board to form a rinsing water flow, achieving a rinsing effect. The combination of rinsing and rinsing can improve the water washing efficiency and effect of the first water washing. Subsequently, the first circulation system 3 discharges the deionized water from the washing tank 1, and the scraper 52 descends along the z-axis until it contacts the surface of the board, while moving along the y-axis to scrape off the excess deionized water on the surface of the board. The heating mechanism 6 can heat the board to dry the deionized water on its surface, thereby completing the first water washing treatment. Since the deionized water on the surface of the board is scraped off by the scraper 52, the drying efficiency is high.

[0047] (2) Passivation treatment: The second circulation system 4 provides passivation solution to the water washing tank 1. After the passivation solution level is higher than the surface of the plate, it is left to stand for a period of time (e.g., 8-10 minutes) to achieve the passivation soaking effect. Subsequently, the second circulation system 4 discharges the passivation solution from the water washing tank. The scraper 52 descends along the z-axis until it contacts the surface of the plate, and at the same time moves along the y-axis to scrape off the excess passivation solution from the surface of the plate, thereby completing the passivation treatment.

[0048] (3) Second water washing treatment: The first circulation system 3 repeats the work to complete the second water washing treatment.

[0049] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the protection scope of this application.

Claims

1. A washing device, comprising a washing tank, a shelf disposed in the washing tank, and a control cabinet, characterized in that, It also includes a first circulation system for supplying and discharging ionized water into the washing tank, a second circulation system for supplying and discharging passivation solution into the washing tank, a scraper mechanism located above the platform, and a heating mechanism disposed inside the platform; the scraper mechanism includes a lifting frame, a scraper mounted on the lifting frame, and a traveling unit, the scraper having a certain length in the x-axis direction, the lifting frame being able to drive the scraper to rise and fall in the z-axis direction so that the scraper contacts or moves away from the platform, and the traveling unit being able to drive the lifting frame to move in the y-axis direction.

2. The water washing device according to claim 1, characterized in that, The length of the scraper is not less than the width of the platform in the x-axis direction.

3. The water washing device according to claim 1, characterized in that, The scraper blade is a soft scraper.

4. The water washing device according to claim 1, characterized in that, The traveling unit is a gantry frame.

5. The water washing device according to claim 4, characterized in that, The lifting frame includes a horizontal plate and multiple synchronous pneumatic rods; guide blocks are provided at both ends of the horizontal plate, and the guide blocks can cooperate with the guide grooves on the vertical beam of the traveling unit; the multiple synchronous pneumatic rods are installed through the horizontal beam of the traveling unit, and their telescopic ends are fixedly connected to the horizontal plate; the scraper is fixedly installed on the bottom surface of the horizontal plate.

6. The water washing device according to claim 1, characterized in that, A pair of backing strips are fixedly installed on the shelf, and the pair of backing strips have a certain distance between them in the y-axis direction.

7. The water washing device according to claim 1, characterized in that, The first circulation system includes a plurality of nozzles arranged on one side wall of the washing pool and along the y-axis, an ion water source connected to the nozzles via pipelines, a first outlet on the bottom surface of the washing pool, and an ion water recovery system connected to the first outlet via pipelines.

8. The washing device according to claim 7, characterized in that, The nozzle is a high-pressure nozzle, and the axial direction of the nozzle has an acute angle of 0° to 5° with the horizontal plane of the platform.

9. The water washing device according to claim 1, characterized in that, The second circulation system includes a plurality of water inlets arranged along the y-axis on one side wall of the washing tank, a passivation liquid supply source connected to the water inlet pipes, a second water outlet opened on the bottom surface of the washing tank, and a passivation liquid recovery system connected to the second water outlet pipes.

10. The water washing device according to claim 1, characterized in that, The bottom surface of the washing pool is inclined, and the first outlet of the first circulation system and the second outlet of the second circulation system are located on the lower side of the bottom surface of the washing pool.

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