Circulating structure of platemaking electroplating liquid

Abstract

The utility model relates to the technical field of electroplate liquid circulation, and provides a platemaking electroplate liquid circulation structure which comprises an electroplate bath used for containing electroplate liquid and a workpiece to be machined, two drainage grooves formed in the two ends of the electroplate bath correspondingly to collect redundant electroplate liquid and a circulation mechanism used for inputting the electroplate liquid in the drainage grooves into the electroplate bath. Overflow notches are formed in the side walls, located at the two ends, of the electroplating tank in a penetrating mode, the overflow notches extend to a tank opening of the electroplating tank, a liquid outlet is formed in the bottom of the drainage tank, and a liquid inlet is formed in the side wall of the electroplating tank; the circulating mechanism comprises a circulating pump and two circulating pipelines which are respectively arranged at the liquid inlet end and the liquid outlet end of the circulating pump, and the two circulating pipelines are respectively communicated with the liquid outlet and the liquid inlet; a first filtering assembly is arranged in the drainage groove, and a penetrating opening communicating with the overflow notch is formed in the side wall of the drainage groove. The device has the advantage that the possibility that scum flows back into the electroplating liquid in the electroplating bath is reduced.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of electroplating liquid circulation, and in particular to a circulation structure of electroplating liquid for plate making. BACKGROUND

[0002] In order to improve the service life and texture of the plate, in the prior art, electroplating liquid is usually used for electroplating. Since the thickness of the electroplating layer required by the outer surface of the plate is relatively thick, a high-concentration electroplating liquid is used. However, the interaction between ions in the high-concentration electroplating liquid can cause uneven deposition of the ions on the surface of the article, which can cause excessive deposition in some areas and insufficient deposition in other areas. When the plate is placed in the electroplating liquid for electroplating, pinholes, pitting and other defects can occur on the electroplated plate, thereby affecting the uniformity and compactness of the electroplating.

[0003] To this end, in the prior art, a drainage groove is arranged beside the electroplating tank to receive the overflowed electroplating liquid when the plate is placed in the electroplating liquid. A conduit is arranged on the drainage groove, and a circulating pump is arranged on the conduit. The outlet end of the circulating pump is connected to the electroplating tank to flow the overflowed electroplating liquid with a low concentration into the electroplating tank through the circulating pump, so that the electroplating liquid is continuously flowed to reduce some defects caused by the concentration difference during electroplating.

[0004] During electroplating, some dregs are generated. The generated dregs can flow into the drainage groove along with the overflowed electroplating liquid. The main function of the circulating pump is to circulate water. Some dregs can flow back to the electroplating tank along the conduit and the circulating pump, thereby affecting the electroplating quality. Therefore, further improvement is needed. CONTENT OF THE INVENTION

[0005] In order to reduce the possibility of the generated dregs flowing back to the electroplating tank through the circulating pump during electroplating, thereby improving the electroplating quality, the application provides a circulation structure of electroplating liquid for plate making.

[0006] The application provides a circulation structure of electroplating liquid for plate making, which adopts the following technical scheme:

[0007] The application discloses a circulating structure of a plating solution, which comprises a plating tank for containing a plating solution and a workpiece to be processed, two drainage tanks arranged at two ends of the plating tank respectively to collect the plating solution, and a circulating mechanism for inputting the plating solution in the drainage tank into the plating tank, wherein the plating tank is provided with overflow notches penetrating through the side walls at the two ends, the overflow notches extend to the tank opening of the plating tank, the bottom of the drainage tank is provided with a liquid outlet, and the side wall of the plating tank is provided with a liquid inlet; the circulating mechanism comprises a circulating pump and two circulating pipelines arranged at the liquid inlet end and the liquid outlet end of the circulating pump respectively, and the two circulating pipelines are connected to the liquid outlet and the liquid inlet respectively; the drainage tank is provided with a first filtering assembly, the side wall of the drainage tank is provided with a through hole connected to the overflow notch, and the first filtering assembly comprises a filtering net bag arranged at the through hole and a first connecting piece for detachably connecting the filtering net bag to the drainage tank; the filtering net bag is provided with an inlet connected to the through hole, and the filtering net bag is made of a corrosion-resistant material.

[0008] By adopting the technical scheme, the plating solution overflowing into the drainage tank can be returned to the plating tank through the circulating pump and the circulating pipeline during processing, so that the plating solution continuously flows in the whole tank body; in the processing process, some dregs are generated, and the filtering net bag is arranged to intercept and retain the dregs flowing into the drainage tank through the overflow notch and the through hole, so that the dregs are filtered; since the filtering net bag can be detachably connected to the drainage tank through the first connecting piece, the collected dregs can be filtered, the drainage tank needs to be cleaned less, the dregs can be cleaned relatively conveniently, and the amount of impurities contained in the plating solution returned to the plating tank can be reduced, so that the plating quality is improved.

[0009] Since some plating solutions have certain corrosiveness, the filtering net bag is made of a corrosion-resistant material, so that the possibility of corrosion of the filtering net bag during filtering is reduced.

[0010] Preferably, the first connecting piece comprises a fixed ring fixedly connected to the through hole of the drainage tank and a connecting belt arranged around the filtering net bag, the outer peripheral wall of the fixed ring is provided with a first groove, the filtering net bag is provided with a clamping part clamped in the first groove at the inlet, the middle part of the connecting belt is arranged in the clamping part, the two ends of the connecting belt are arranged through the clamping part, and the two ends of the connecting belt are tightened to be tied at the first groove of the fixed ring.

[0011] By adopting the technical scheme, the clamping part is clamped in the first groove of the fixed ring, the two ends of the connecting belt are collected to be tied at the first groove of the fixed ring, when a certain amount of dregs is collected, the filtering net bag is detached from the fixed ring by untieing, then the two ends of the connecting belt are tightened again to collect the through hole, so that the possibility of falling of the collected dregs is reduced.

[0012] Preferably, the circulating pipeline is provided with a second filter assembly, the circulating pipeline communicated with the drainage groove is a first pipeline, the circulating pipeline communicated with the electroplating tank is a second pipeline, the second filter assembly is arranged in the first pipeline, and the filter assembly comprises a plurality of filter plates arranged at intervals along the length direction of the first pipeline.

[0013] By adopting the above technical scheme, the plurality of filter plates are arranged to filter the impurities not retained by the filter screen, so that the impurities are less likely to enter the circulating pump and accumulate in the circulating pump, and the impurities are less likely to flow back to the circulating tank, thereby reducing the amount of impurities contained in the electroplating solution flowing back to the electroplating tank, and improving the electroplating quality.

[0014] Preferably, the size of the filter holes of the plurality of filter plates gradually decreases towards the circulating pump.

[0015] By adopting the above technical scheme, since the sizes of the impurities are different, the filter holes of the filter plates are arranged to gradually decrease in size towards the circulating pump, so that the impurities of different sizes are blocked, and the filtering effect of the electroplating solution flowing back to the electroplating tank is improved.

[0016] Preferably, the second filter assembly further comprises a mounting ring and a second connecting piece arranged between the mounting ring and the filter plates and adjacent filter plates, the second connecting piece is provided with a plurality of second connecting pieces, the filter plates abut against the inner wall of the first pipeline, the first pipeline is provided with a third connecting piece, the first pipeline is detachably connected to the drainage groove through the third connecting piece, and the inner circumferential wall of the liquid inlet end of the first pipeline is provided with a clamping groove for sliding clamping of the mounting ring.

[0017] By adopting the above technical scheme, the second connecting piece is arranged to connect the mounting ring and the filter plates and the adjacent filter plates, when the filtering reaches a certain degree, the first pipeline is detachably connected to the drainage groove through the third connecting piece, the mounting ring is separated, and the plurality of filter plates are taken out for cleaning for next use.

[0018] Preferably, the second connecting piece is a spring.

[0019] By adopting the technical scheme, the second connecting piece is a spring, which can be adapted to some soft or foldable first pipeline, so as to improve the application range of the filter assembly. When the circulating pump is pressurized, the spring is driven to stretch along the length direction of the spring to vibrate the impurities adhered to the filter plate, so as to reduce the influence of excessive impurities adhered to the filter plate on the flow speed of the electroplating solution. Since the filter plate abuts against the inner wall of the first pipeline, the impurities adhered to the first pipeline can be scraped, so as to reduce the adhesion amount of the impurities in the first pipeline.

[0020] Preferably, the second connecting piece further comprises bristles arranged on the spring, the bristles are made of corrosion-resistant material, the axis of the spring is inclined to the axis of the mounting ring, the spring is arranged at intervals around the axis of the mounting ring, and the bristles abut against the inner wall of the first pipeline.

[0021] By adopting the technical scheme, the axis of the spring is inclined to the axis of the mounting ring, and the bristles are arranged on the spring, so that the cleaning range and effect of the inner wall of the first pipeline can be further improved.

[0022] Preferably, a second groove is formed in the inner circumferential wall of the mounting ring.

[0023] By adopting the technical scheme, after the first pipeline is separated from the drainage groove by the second connecting piece, the finger card is embedded in the first groove, so that the mounting ring is slid off from the clamping groove to separate the entire filter assembly from the first pipeline.

[0024] Preferably, an ultrasonic vibrator is arranged in the first pipeline, and the ultrasonic vibrator is arranged close to the circulating pump.

[0025] By adopting the technical scheme, the ultrasonic vibrator is arranged, the high-frequency vibration can further destroy the bubble nucleus to help the gas to be precipitated, so as to enhance the ability to remove the small inclusions, reduce the possibility of pinholes on the electroplated plate due to gas problems, and further improve the electroplating quality of the plate.

[0026] In summary, the utility model has the following beneficial effects:

[0027] The filter net is detachably connected to the drainage groove by the first connecting piece, so that the floating sludge flowing into the drainage groove through the overflow notch and the through hole can be filtered, the amount of impurities contained in the electroplating solution flowing back into the electroplating tank can be reduced, and the electroplating quality can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is a schematic diagram of the overall structure of Embodiment 1 of the present application;

[0029] Figure 2 is a schematic diagram of the overall structure of Embodiment 1 of the present application; Figure 1 is a schematic diagram of a partial enlargement of A in

[0030] Figure 3 is a schematic diagram of the structure of Embodiment 1 of the present application in which the axis of the spring is inclined to the axis of the filter plate;

[0031] Figure 4 is a schematic diagram of the structure of Embodiment 1 of the present application in which the axis of the spring is parallel to the axis of the filter plate;

[0032] Figure 5 is a schematic diagram of the structure of Embodiment 2 of the present application.

[0033] BRIEF DESCRIPTION OF DRAWINGS 1, electroplating tank; 11, overflow notch; 12, liquid inlet; 2, drainage groove; 21, through hole; 22, liquid outlet; 3, circulation mechanism; 31, circulation pump; 32, first pipeline; 321, clamping groove; 33, second pipeline; 4, first filter assembly; 41, filter net bag; 42, first connecting piece; 421, fixing ring; 422, connecting band; 423, first groove; 424, clamping portion; 5, second filter assembly; 51, filter plate; 52, mounting ring; 521, second groove; 53, second connecting piece; 531, spring; 532, bristle; 6, ultrasonic vibrator; 7, third connecting piece; 71, flange; 72, sealing ring; 73, bolt; 74, nut. DETAILED DESCRIPTION

[0034] The present application will be described in further detail below with reference to the accompanying drawings. Figures 1-5 The present application will be described in further detail below with reference to the accompanying drawings.

[0035] The present application discloses a circulation structure of a plating solution for making a plate.

[0036] Embodiment 1

[0037] A circulation structure of a plating solution for making a plate, with reference to Figure 1 includes an electroplating tank 1 for containing a plating solution and a workpiece to be processed, two drainage grooves 2 respectively arranged at both ends of the electroplating tank 1 to collect excess plating solution, and a circulation mechanism 3 for inputting the plating solution in the drainage grooves 2 into the electroplating tank 1.

[0038] The overflow notches 11 are extended to the notches of the electroplating tank 1, the side wall of the electroplating tank 1 is provided with a liquid inlet 12, and the liquid inlet 12 can be arranged at the middle and lower part of the electroplating tank 1. The side wall of the drainage tank 2 is provided with a through hole 21 communicated with the overflow notch 11, the through hole 21 is extended to the notch of the drainage tank 2, the bottom of the drainage tank 2 is provided with a liquid outlet 22, which is arranged on the inner wall of the bottom of the drainage tank 2 and is arranged away from one end of the electroplating tank 1, and the inner wall of the bottom of the drainage tank 2 is inclined downward towards the liquid outlet 22.

[0039] The circulation mechanism 3 specifically includes a circulation pump 31 and two circulation pipes arranged at the liquid inlet end and the liquid outlet end of the circulation pump 31, respectively, and the two circulation pipes are communicated with the liquid outlet 22 and the liquid inlet 12, respectively. In order to distinguish, in the embodiment, the circulation pipe communicated with the drainage tank 2 is a first pipe 32, and the circulation pipe communicated with the electroplating tank 1 is a second pipe 33.

[0040] Referring to Figure 1 , Figure 2 , the first filter assembly 4 is arranged in the drainage tank 2, the first filter assembly 4 includes a filter net bag 41 arranged at the through hole 21 and a first connecting piece 42 for detachably connecting the filter net bag 41 to the drainage tank 2, the filter net bag 41 has an inlet communicated with the through hole 21, the filter net bag 41 is made of a corrosion-resistant material, specifically polypropylene material, polytetrafluoroethylene material, glass fiber material or ceramic material, and the like, which is arranged according to the requirements. When a certain elasticity and corrosion resistance are required, full fluorine rubber or expanded polytetrafluoroethylene can be selected, which is arranged according to the requirements. The above materials can reduce the influence on the concentration of metal ions in the electroplating solution while filtering the floating sludge.

[0041] The first connecting piece 42 specifically includes a fixed ring 421 fixedly connected to the through hole 21 of the drainage tank 2 and a connecting band 422 wound around the filter net bag 41, the outer peripheral wall of the fixed ring 421 is provided with a first groove 423, the filter net bag 41 is provided with a clamping part 424 clamped in the first groove 423 at the inlet, the middle part of the connecting band 422 is arranged in the clamping part 424, the two ends of the connecting band 422 are arranged in the clamping part 424, and the two ends of the connecting band 422 are tightened to be tied at the first groove 423 of the fixed ring 421.

[0042] Referring to Figure 1 , Figure 3In the embodiment, the first pipeline 32 is provided with a second filter assembly 5. The second filter assembly 5 specifically includes a plurality of filter plates 51 arranged at intervals along the length direction of the first pipeline 32, a mounting ring 52 arranged at the liquid inlet end of the first pipeline 32, and a second connecting piece 53 arranged between the mounting ring 52 and the filter plates 51 and adjacent filter plates 51.

[0043] The filter holes of the plurality of filter plates 51 gradually decrease in size towards the direction close to the circulating pump 31. The filter plates 51 abut against the inner wall of the first pipeline 32. The inner peripheral wall of the first pipeline 32 at the liquid inlet end is provided with a clamping groove 321 for clamping the mounting ring 52 to slide. The inner peripheral wall of the mounting ring 52 is provided with a second groove 521 for the fingers to hold to disengage the mounting ring 52 from the clamping groove 321.

[0044] The second connecting piece 53 includes a plurality of springs 531 arranged at intervals around the axis of the mounting ring 52. The two ends of a part of the springs 531 are fixedly connected to the mutually close surfaces of the mounting plate and the filter plates 51 respectively. The two ends of another part of the springs 531 are fixedly connected to the mutually close surfaces of the adjacent two filter plates 51 respectively. In the embodiment, the axis of the spring 531 can be inclined to the axis of the mounting ring 52 as shown in Figure 3 , or the axis of the spring 531 can be parallel to the axis of the filter plate 51 as shown in Figure 4 .

[0045] Returning to Figure 1 , further, in order to reduce the possibility of pinholes on the surface of the electroplated plate due to excessive gas, in the embodiment, the first pipeline 32 is provided with an ultrasonic vibrator 6 close to the circulating pump 31.

[0046] Referring to Figure 1 , Figure 3 , in order to facilitate dismounting of the filter assembly from the first pipeline 32, in the embodiment, the first pipeline 32 is provided with a third connecting piece 7. The first pipeline 32 is detachably connected to the drainage groove 2 through the third connecting piece 7. The third connecting piece 7 specifically includes two flanges 71 fixedly connected to the drainage groove 2 and the liquid inlet end of the first pipeline 32 respectively, a sealing ring 72 arranged on the mutually close surfaces of the two flanges 71, a bolt 73 penetrating the two flanges 71, and a nut 74 threadedly connected to the bolt 73. The bolt 73 is arranged at intervals around the axis of the flange 71.

[0047] The implementation principle of the circulation structure of the plating solution plate manufacturing solution of the embodiment of the application is as follows: when the concentration of the plating solution is relatively high, the concentration of the plating solution in the upper and lower two regions may be different, at this time, after the workpiece to be processed is soaked in the plating solution, a part of the plating solution will enter the drainage groove 2 through the overflow notch 11, the plating solution flowing into the drainage groove 2 is usually the plating solution in the upper region, and the concentration is relatively low, with the working of the circulating pump 31, the plating solution sucked into the circulating pump 31 is pressurized and conveyed back to the inside of the plating tank 1, so that the continuous flow of the plating solution in the entire tank body is realized, which helps to break the original static balance state, greatly reduces the deposition unevenness caused by the too high local concentration, thereby reducing the occurrence of pinholes, pitting and other adverse phenomena in the plating process, and improving the plating quality.

[0048] Embodiment 2:

[0049] With reference to Figure 5 The difference between the embodiment and the embodiment 1 is that the second connecting piece 53 further comprises a plurality of bristles 532 arranged on the spring 531, in the embodiment, the bristles are shown as the bristles 532 arranged on the spring 531 in the embodiment 1, and the plurality of bristles 532 form a bristle 532 ring abutting against the inner wall of the first pipeline 32. Figure 4 It should be noted that the bristles 532 are also made of corrosion-resistant materials, which can be the same material as the filter net 41, and the specific setting is based on the requirement.

[0050] The above are the preferred embodiments of the application, and do not limit the protection scope of the application, therefore: all equivalent changes made according to the structure, shape, principle of the application should be covered in the protection scope of the application.

Claims

1. A circulation structure for a plate-making electroplating solution, characterized in that: The utility model provides an electroplating device, which comprises an electroplating tank (1) for containing electroplating solution and a workpiece to be processed, two drainage tanks (2) respectively arranged at two ends of the electroplating tank (1) to collect excess electroplating solution, and a circulating mechanism (3) for inputting the electroplating solution in the drainage tank (2) into the electroplating tank (1), wherein the electroplating tank (1) is provided with overflow notches (11) penetrating through the side walls at both ends, the overflow notches (11) extend to the tank opening of the electroplating tank (1), the bottom of the drainage tank (2) is provided with a liquid outlet (22), and the side wall of the electroplating tank (1) is provided with a liquid inlet (12); the circulating mechanism (3) comprises a circulating pump (31) and two circulating pipelines respectively arranged at the liquid inlet end and the liquid outlet end of the circulating pump (31), and the two circulating pipelines are respectively connected to the liquid outlet (22) and the liquid inlet (12); the drainage tank (2) is provided with a first filter assembly (4), the side wall of the drainage tank (2) is provided with a through hole (21) connected to the overflow notch (11), the first filter assembly (4) comprises a filter net bag (41) arranged at the through hole (21) and a first connecting piece (42) for detachably connecting the filter net bag (41) to the drainage tank (2), and the filter net bag (41) has an inlet connected to the through hole (21); the filter net bag (41) is made of a corrosion-resistant material.

2. A circulation structure of a plating solution for plate making according to claim 1, wherein: The first connecting piece (42) comprises a fixed ring (421) fixedly connected to the through hole (21) of the drainage tank (2) and a connecting band (422) wound around the filter net bag (41), the outer peripheral wall of the fixed ring (421) is provided with a first groove (423), the filter net bag (41) is provided with a clamping portion (424) clamped in the first groove (423) at the inlet, the middle part of the connecting band (422) is arranged in the clamping portion (424), and the two ends of the connecting band (422) are arranged in the clamping portion (424) and are tightened to be tied to the first groove (423) of the fixed ring (421).

3. A circulation structure of a plating solution for plate making according to claim 1, wherein: The circulating pipeline is provided with a second filter assembly (5), the circulating pipeline connected to the drainage tank (2) is a first pipeline (32), the circulating pipeline connected to the electroplating tank (1) is a second pipeline (33), the second filter assembly (5) is arranged in the first pipeline (32), and the filter assembly comprises a plurality of filter plates (51) arranged at intervals along the length direction of the first pipeline (32).

4. A circulation structure of a plating solution for plate making according to claim 3, wherein: The sizes of the filter holes of the plurality of filter plates (51) gradually decrease towards the direction close to the circulating pump (31).

5. A circulation structure of a plating solution for plate making according to claim 3, wherein: The second filter assembly (5) further comprises a mounting ring (52) and a plurality of second connecting pieces (53) arranged between the mounting ring (52) and the filter plates (51) and adjacent filter plates (51), the filter plates (51) abut the inner wall of the first pipeline (32), the first pipeline (32) is provided with a third connecting piece (7), the first pipeline (32) is detachably connected to the drainage groove (2) through the third connecting piece (7), and the inner circumferential wall of the first pipeline (32) at the liquid inlet end is provided with a clamping groove (321) for sliding clamping of the mounting ring (52).

6. A circulation structure of a plating solution for plate making according to claim 5, wherein: The second connecting piece (53) comprises a spring (531).

7. A circulation structure of a plating solution for plate making according to claim 6, wherein: The second connecting piece (53) further comprises a brush (532) arranged on the spring (531), the brush (532) is made of a corrosion-resistant material, the axis of the spring (531) is inclined to the axis of the mounting ring (52), the spring (531) is arranged at intervals around the axis of the mounting ring (52), and the brush (532) abuts the inner wall of the first pipeline (32).

8. A circulation structure of a plating solution for plate making according to claim 5, wherein: The inner circumferential wall of the mounting ring (52) is provided with a second groove (521).

9. The plating solution recycling structure according to claim 3, wherein: The first pipeline (32) is provided with an ultrasonic vibrator (6), and the ultrasonic vibrator (6) is arranged close to the circulating pump (31).

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