Water retaining device and circuit board electroplating equipment

Abstract

The utility model discloses a water retaining device and circuit board electroplating equipment, and relates to the technical field of circuit board processing, the water retaining device is applied to the circuit board electroplating equipment, the circuit board electroplating equipment comprises an electroplating cylinder, the water retaining device comprises a fixing frame, a driving mechanism, a conveying mechanism and a water retaining mechanism, the fixing frame is arranged above the electroplating cylinder, and the driving mechanism is arranged on the fixing frame. The driving mechanism comprises a first driving assembly and a second driving assembly which are arranged on the fixing frame and operate independently, the conveying mechanism is arranged on the fixing frame and is in transmission connection with the first driving assembly, and the water retaining mechanism comprises a partition plate arranged in the electroplating cylinder, a first water retaining wheel and a second water retaining wheel, according to the structure, power sources of the conveying mechanism and the water retaining mechanism are independent, a large-size fixing frame and a large-size chain are not needed, space can be saved, interference among parts can be avoided, and the equipment is small in size, low in assembly difficulty and high in transmission frequency controllability.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit board processing, in particular to a water retaining device and circuit board electroplating equipment. Background Art

[0002] In today's integrated EVCP (voltage control system for electroplating) units, the copper plating tank and the pre- and post-processing tanks are each equipped with a partition with a notch in the middle where the PCB passes. This notch houses a water wheel device designed to prevent rapid exchange of liquids between the different tanks (it doesn't completely isolate them; it merely blocks most of the water flow, reducing the dilution rate). However, the drive mechanism for this water wheel typically utilizes a large fixed frame equipped with bearings, a drive shaft, and a chain. When a steel belt (clamp) moves, it catches the gap in the chain and drives the entire drive mechanism. This large structure, with some parts extending into the copper plating tank, hinders access to the anode baskets. Furthermore, the large size and weight of this wheel, coupled with the high verticality requirements of the driven shaft, make assembly difficult, requiring at least two people. Furthermore, the numerous components make processing and assembly time-consuming, resulting in high labor costs. Utility Model Content

[0003] The main purpose of the utility model is to provide a water retaining device and circuit board electroplating equipment, aiming to solve the problem of large volume of the water retaining wheel device in the existing electroplating equipment.

[0004] To achieve the above-mentioned purpose, the water retaining device proposed in the present invention is applied to a circuit board electroplating device, wherein the circuit board electroplating device includes an electroplating cylinder, and is characterized in that the water retaining device includes:

[0005] A fixing frame is arranged above the electroplating tank;

[0006] The driving mechanism includes a first driving assembly and a second driving assembly provided on the fixing frame;

[0007] A conveying mechanism, provided on the fixing frame and in driving connection with the first driving assembly, the conveying mechanism being used for clamping the circuit board and moving it within the electroplating tank; and

[0008] The water-blocking mechanism includes a partition arranged in the electroplating cylinder, a first water-blocking wheel and a second water-blocking wheel arranged on the partition, the first water-blocking wheel and / or the second water-blocking wheel are drivingly connected to the second driving component, the first water-blocking wheel and the second water-blocking wheel are arranged on the same side of the partition, and the second driving component is used to drive the first water-blocking wheel and the second water-blocking wheel to rotate in opposite directions; there is a first plate-passing channel between the first water-blocking wheel and the second water-blocking wheel, and a second plate-passing channel is provided on the partition, the transmission mechanism is used to drive the circuit board to pass through the first plate-passing channel and the second plate-passing channel in sequence, and the first water-blocking wheel and the second water-blocking wheel are used to elastically abut against the opposite sides of the circuit board.

[0009] In one embodiment, the second driving assembly includes a motor, a transmission shaft and a gear set, the motor is arranged on the fixed frame, one end of the transmission shaft is transmission-connected to the motor, and the other end of the transmission shaft is transmission-connected to the first water-blocking wheel and the second water-blocking wheel through the gear set.

[0010] In one embodiment, the first water-blocking wheel and the second water-blocking wheel are respectively provided with a first gear and a second gear at one end away from the fixed frame, and the first gear and the second gear are meshed with each other. A third gear is provided at one end of the transmission shaft away from the motor, and the third gear is transmission-connected to the first gear or the second gear through a bridge gear.

[0011] In one embodiment, the second drive assembly further includes a coupling, and the end of the transmission shaft away from the gear set is transmission-connected to the motor via the coupling.

[0012] In one embodiment, the axis of the output shaft of the motor coincides with the axis of the transmission shaft.

[0013] In one embodiment, the driving mechanism further includes a bearing, at least two of the bearings are provided on the fixing frame, and the transmission shaft is sequentially passed through the shaft holes of the two bearings.

[0014] In one embodiment, a first mounting plate and a second mounting plate are provided on one side of the partition, the first mounting plate and the second mounting plate are arranged along the height direction of the partition, the second mounting plate is provided at the bottom of the electroplating cylinder, the two ends of the first water retaining wheel and the second water retaining wheel are respectively connected to the first mounting plate and the second mounting plate, and the gear set is provided on the second mounting plate.

[0015] In one embodiment, the first water-blocking wheel and the second water-blocking wheel are sponge rubber wheels.

[0016] In one embodiment, the conveying mechanism includes a steel belt and a clamp, the steel belt is arranged above the first water-blocking wheel and the second water-blocking wheel, the clamp is arranged on the side of the steel belt close to the first water-blocking wheel and the second water-blocking wheel to clamp the circuit board, and the first driving component drives the steel belt to move so that the clamp clamps the circuit board to move.

[0017] The present utility model also proposes a circuit board electroplating device, which includes an electroplating cylinder and a water retaining device in any of the aforementioned embodiments, wherein the water retaining device is arranged on the electroplating cylinder, and the water retaining mechanism is arranged in the electroplating cylinder.

[0018] The technical solution of the present invention is to reduce the overall volume of the circuit board electroplating equipment by adopting two sets of driving components to act on the transmission mechanism and the water retaining mechanism in the water retaining device respectively. Specifically, the water retaining device is applied to the circuit board electroplating equipment, and the circuit board electroplating equipment includes an electroplating cylinder. The water retaining device includes a fixed frame, a driving mechanism, a transmission mechanism and a water retaining mechanism. The fixed frame is arranged above the electroplating cylinder. The driving mechanism includes a first driving component and a second driving component which are arranged on the fixed frame and operate independently. The transmission mechanism is arranged on the fixed frame and is transmission-connected to the first driving component. The driven lower conveying mechanism is used to clamp the circuit board and move it in the electroplating cylinder. The water-blocking mechanism includes a partition, a first water-blocking wheel and a second water-blocking wheel. The partition is arranged in the electroplating cylinder and separates two troughs. The first water-blocking wheel and the second water-blocking wheel are arranged on the same side of the partition. The second driving component drives the first water-blocking wheel and the second water-blocking wheel to rotate in opposite directions so that a first plate-passing channel is formed between the first water-blocking wheel and the second water-blocking wheel. A second plate-passing channel is opened on the partition corresponding to the first plate-passing channel. When the circuit board passes through the first plate-passing channel, the surfaces on both sides elastically abut against the first water-blocking wheel and the second water-blocking wheel respectively.

[0019] It is understandable that compared to conventional equipment that uses a single power source to drive the circuit board to move and simultaneously drive the water retaining wheel to rotate, this solution sets a first drive component and a second drive component so that the transmission mechanism and the water retaining mechanism are not powered by the same power source. This structure does not require a large fixed frame and chain, requires fewer accessories, and is easy to assemble. At the same time, it saves a lot of space to avoid interference between some parts. Two independent power sources can separately adjust the speed of the transmission mechanism to transport the circuit board and the rotation speed of the first and second water retaining wheels. The rotation speeds of the first and second water retaining wheels can be slightly faster than the transportation speed of the transmission mechanism, which is beneficial for passing the board and will not scratch the surface of the circuit board. The transmission frequency is highly controllable, which is more conducive to product processing and manufacturing. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0021] Figure 1 A schematic structural diagram of an embodiment of a circuit board electroplating device provided by the present invention;

[0022] Figure 2 for Figure 1 Schematic diagram of the internal structure of the circuit board electroplating equipment;

[0023] Figure 3 A schematic structural diagram of an embodiment of a water retaining device provided by the present utility model;

[0024] Figure 4 for Figure 1 Front view of the circuit board electroplating equipment facing the water retaining device;

[0025] Figure 5 This is a top cross-sectional view of the water retaining mechanism in one embodiment of the water retaining device provided by the utility model.

[0026] Description of Figure Numbers:

[0027] 100, water retaining device; 110, fixing frame; 120, driving mechanism; 121, motor; 122, transmission shaft; 123, gear set; 1231, first gear; 1232, second gear; 1233, third gear; 1234, bridge gear; 124, coupling; 125, bearing; 130, transmission mechanism; 131, steel belt; 132, clamp; 140, water retaining mechanism; 140a, first plate passage; 140b, second plate passage; 141, partition; 1411, first mounting plate; 1412, second mounting plate; 142, first water retaining wheel; 143, second water retaining wheel;

[0028] 200. Circuit board electroplating equipment; 210. Electroplating tank; 220. Circuit board.

[0029] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0031] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), such directional indications are only used to explain the relative position relationship, movement status, etc. between the various components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0032] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0033] In today's integrated EVCP (voltage control system for electroplating) units, the copper plating tank and the pre- and post-processing tanks are each equipped with a partition with a notch in the middle where the PCB passes. This notch houses a water wheel device designed to prevent rapid exchange of liquids between the different tanks (it doesn't completely isolate them; it merely blocks most of the water flow, reducing the dilution rate). However, the drive mechanism for this water wheel typically utilizes a large fixed frame equipped with bearings, a drive shaft, and a chain. When a steel belt (clamp) moves, it catches the gap in the chain and drives the entire drive mechanism. This large structure, with some parts extending into the copper plating tank, hinders access to the anode baskets. Furthermore, the large size and weight of this wheel, coupled with the high verticality requirements of the driven shaft, make assembly difficult, requiring at least two people. Furthermore, the numerous components make processing and assembly time-consuming, resulting in high labor costs.

[0034] The utility model provides a water retaining device.

[0035] See also Figures 1 to 5The water retaining device 100 is applied to a circuit board electroplating device 200. The circuit board electroplating device 200 includes a plating cylinder 210. The water retaining device 100 includes a fixing frame 110, a driving mechanism 120, a conveying mechanism 130 and a water retaining mechanism 140. The fixing frame 110 is arranged above the plating cylinder 210. The driving mechanism 120 includes a first driving component (not shown) and a second driving component that are arranged on the fixing frame 110 and operate independently. The conveying mechanism 130 is arranged on the fixing frame 110 and is connected to the first driving component in a transmission manner. Under the drive of the first driving component, the conveying mechanism 130 is used to clamp the circuit board 220 and move it in the plating cylinder 210. The water retaining mechanism 140 includes a partition 141 , a first water wheel 142 and a second water wheel 143, a partition 141 is arranged in the electroplating cylinder 210 and separates two troughs, the first water wheel 142 and the second water wheel 143 are arranged parallel and side by side on the same side of the partition 141, and the second driving assembly drives the first water wheel 142 and the second water wheel 143 to rotate in opposite directions, so that a first plate-passing channel 140a is formed between the first water wheel 142 and the second water wheel 143, and a second plate-passing channel 140b is opened on the partition 141 corresponding to the first plate-passing channel 140a. When the circuit board 220 passes through the first plate-passing channel 140a, the surfaces on both sides elastically abut against the first water wheel 142 and the second water wheel 143 respectively.

[0036] It is understandable that, compared to conventional equipment that uses a single power source to drive the circuit board 220 to move and simultaneously drive the water retaining wheel to rotate, this solution sets a first drive assembly and a second drive assembly so that the transmission mechanism 130 and the water retaining mechanism 140 are not powered by the same power source. This structure does not require a large-volume fixed frame 110 and a chain, requires fewer accessories, and is easy to assemble, thereby reducing labor costs. At the same time, a large amount of space is saved and there is no interference with the removal and placement of other accessories from the electroplating cylinder 210. Two independent power sources can separately adjust the speed of the transmission mechanism 130 to transport the circuit board 220 and the rotation speed of the first water retaining wheel 142 and the second water retaining wheel 143. The rotation speed of the first water retaining wheel 142 and the second water retaining wheel 143 can be slightly faster than the transportation speed of the transmission mechanism 130, which is beneficial for passing the board and will not scratch the surface of the circuit board 220. The transmission frequency is highly controllable, which is more conducive to the processing and manufacturing of the product.

[0037] In one embodiment, the second drive assembly includes a motor 121, a transmission shaft 122 and a gear set 123. The motor 121 is arranged on the fixed frame 110, one end of the transmission shaft 122 is transmission-connected to the motor 121, and the other end of the transmission shaft 122 is transmission-connected to the first water-blocking wheel 142 and the second water-blocking wheel 143 through the gear set 123.

[0038] like Figure 2As shown, in one embodiment of the present utility model, the second drive assembly includes a motor 121, a transmission shaft 122 and a gear set 123. Specifically, the motor 121 is arranged on the fixed frame 110, the transmission shaft 122 is arranged along the height direction of the electroplating cylinder 210 and one end is connected to the motor 121 for transmission, and the other end extends into the bottom of the electroplating cylinder 210 and is connected to the gear set 123. The motor 121 drives the transmission shaft 122 to rotate, and the gear set 123 drives the first water wheel 142 and the second water wheel 143 to rotate, as shown in FIG. Figure 5 As shown in FIG, the circuit board 220 passes between the first water-blocking wheel 142 and the second water-blocking wheel 143 and continues to move along the conveying direction of the conveying mechanism 130 through the partition 141. At this time, the first water-blocking wheel 142 rotates counterclockwise and the second water-blocking wheel 143 rotates clockwise, which can avoid scratching the surface of the circuit board 220. As can be seen from the above, the second drive assembly has a simple structure and can save a lot of space and reduce the difficulty of assembly when it is separated from the first drive assembly.

[0039] In one embodiment, a first gear 1231 and a second gear 1232 are respectively provided at the end of the first water-blocking wheel 142 and the second water-blocking wheel 143 away from the fixed frame 110, and the first gear 1231 and the second gear 1232 are meshed with each other. A third gear 1233 is provided at the end of the transmission shaft 122 away from the motor 121, and the third gear 1233 is transmission-connected to the first gear 1231 or the second gear 1232 through a bridge gear 1234.

[0040] like Figure 3 and Figure 5 As shown, in one embodiment of the present invention, gear set 123 includes a first gear 1231, a second gear 1232, a third gear 1233 and a bridge gear 1234. Specifically, the first water wheel 142 and the second water wheel 143 are respectively provided with the first gear 1231 and the second gear 1232 at one end away from the fixed frame 110, and the first gear 1231 and the second gear 1232 are meshed. The third gear 1233 is arranged at an end of the transmission shaft 122 away from the motor 121, and the bridge gear 1234 is meshed with the third gear 1233 and the second gear 1232. It is understandable that the bridge gear 1234 is provided so that the transmission shaft 122 is away from the transmission device and the first water wheel 142 and the second water wheel 143 to avoid causing obstruction and interference. The first gear 1231 and the second gear 1232 are meshed, and the bridge gear 1234 only needs to be meshed with one of the gears. Of course, in some other embodiments of the present invention, the first gear 1231 and the second gear 1232 are not engaged, and multiple bridge gears 1234 are provided to respectively connect and control the first gear 1231 and the second gear 1232 to have the same speed and opposite rotation directions.

[0041] In one embodiment, the second driving assembly further includes a coupling 124 , and one end of the transmission shaft 122 away from the gear set 123 is in transmission connection with the motor 121 via the coupling 124 .

[0042] like Figure 3 and Figure 4 As shown, in one embodiment of the present invention, the second drive assembly also includes a coupling 124. Specifically, the output shaft of the motor 121 is connected to the upper end of the transmission shaft 122 through the coupling 124. The motor 121 drives the transmission shaft 122 to rotate through the coupling 124. The coupling 124 can facilitate the installation of the motor 121 and does not require precise setting of the positions of its output shaft and the transmission shaft 122. The use of the coupling 124 can reduce the impact of misalignment and vibration on other components, extend the service life of the equipment, and reduce the need for equipment maintenance. The effective centering and vibration reduction of the coupling 124 help to improve the efficiency and performance of the entire transmission system and ensure smooth operation of the equipment.

[0043] In one embodiment, the axis of the output shaft of the motor 121 coincides with the axis of the transmission shaft 122 .

[0044] like Figure 3 and Figure 4 As shown, in one embodiment of the present invention, the axis of the output shaft of the motor 121 coincides with the axis of the transmission shaft 122. Specifically, the output shaft of the motor 121 faces downward and is arranged along the length of the transmission shaft 122, and is connected and fixed to the transmission shaft 122 in a vertical state through a coupling 124. The vertical connection can effectively utilize space to make the layout more compact, and reduce the vibration and noise problems caused by alignment, which is conducive to reducing failures and downtime. Of course, in some other embodiments, the motor 121 can be connected to the transmission shaft 122 through a universal coupling 124. In this case, the axis of the output shaft of the motor 121 and the axis of the transmission shaft 122 do not coincide. Different installation structures can be selected according to actual needs, and no specific limitation is made here.

[0045] In one embodiment, a first mounting plate 1411 and a second mounting plate 1412 are provided on one side of the partition 141, and the first mounting plate 1411 and the second mounting plate 1412 are arranged along the height direction of the partition 141. The second mounting plate 1412 is provided at the bottom of the electroplating cylinder 210, and the two ends of the first water-blocking wheel 142 and the second water-blocking wheel 143 are respectively connected to the first mounting plate 1411 and the second mounting plate 1412, and the gear set 123 is provided on the second mounting plate 1412.

[0046] like Figure 3 and Figure 4As shown, in one embodiment of the present invention, a side of the partition 141 near the first water wheel 142 and the second water wheel 143 is provided with a first mounting plate 1411 and a second mounting plate 1412, the first mounting plate 1411 is located at the position of the partition 141 near the transmission mechanism 130, the second mounting plate 1412 is arranged on the bottom wall of the electroplating cylinder 210 and fixed on the partition 141, the upper ends of the first water wheel 142 and the second water wheel 143 are respectively rotated and arranged on the first mounting plate 1411, the lower ends of the first water wheel 142 and the second water wheel 143 are rotatably connected with the second mounting plate 1412, and the gear set 123 is located on the second mounting plate 1412 and connects the transmission shaft 122 and the two water wheels. It is understandable that the first mounting plate 1411 and the second mounting plate 1412 play the role of installing the first water wheel 142 and the second water wheel 143, and cooperate with the fixed frame 110 to make the second drive assembly stably output power, and the structure is simple and easy to assemble.

[0047] In one embodiment, the driving mechanism 120 further includes a bearing 125 . The fixing frame 110 is provided with at least two bearings 125 , and the transmission shaft 122 is sequentially passed through the shaft holes of the two bearings 125 .

[0048] like Figure 3 and Figure 4 As shown, in one embodiment of the present invention, the drive mechanism 120 further includes a bearing 125. Specifically, two bearings 125 are provided on the fixed frame 110. The axes of the two bearings 125 coincide with each other, and the transmission shaft 122 passes through the axial holes of the two bearings 125 in sequence. This ensures that the transmission shaft 122 is not displaced or swung due to external forces, ensuring good verticality and improving the operating stability of the second drive assembly. Of course, in some other embodiments of the present invention, the number of bearings 125 can be greater than two, and the arrangement position is not specifically limited, as long as the transmission shaft 122 can maintain verticality. No specific limitation is made here.

[0049] In one embodiment, the first water-blocking wheel 142 and the second water-blocking wheel 143 are sponge rubber wheels.

[0050] Since the first water blocking wheel 142 and the second water blocking wheel 143 need to realize the water blocking function at the second plate passage 140b of the partition 141, when the circuit board 220 does not pass through the first plate passage 140a, the first water blocking wheel 142 and the second water blocking wheel 143 abut against each other to prevent the liquid exchange speed on both sides of the partition 141 from being too fast. When the circuit board 220 passes through the first plate passage 140a, the two sides squeeze the first water blocking wheel 142 and the second water blocking wheel 143 respectively. In one embodiment of the present utility model, the first water blocking wheel 142 The first and second water-blocking wheels 142 and 143 are sponge-like rubber wheels. When the circuit board 220 enters the first plate-passing channel 140a, the first and second water-blocking wheels 142 and 143 are squeezed, and the first and second water-blocking wheels 142 and 143 are deformed to form the first plate-passing channel 140a. After the circuit board 220 passes through the first plate-passing channel 140a, the first and second water-blocking wheels 142 and 143 rebound to prevent rapid exchange of liquid. The elastic first and second water-blocking wheels 142 and 143 are not easy to scratch the circuit board 220, thereby improving the product yield.

[0051] In one embodiment, the conveying mechanism 130 includes a steel belt 131 and a clamp 132. The steel belt 131 is arranged above the first water-blocking wheel 142 and the second water-blocking wheel 143. The clamp 132 is arranged on one side of the steel belt 131 close to the first water-blocking wheel 142 and the second water-blocking wheel 143 to clamp the circuit board 220. The first driving component drives the steel belt 131 to move so that the clamp 132 clamps the circuit board 220 to move.

[0052] like Figures 1 to 3 As shown, in one embodiment of the present invention, the conveying mechanism 130 includes a steel belt 131 and a clamp 132. Specifically, the clamp 132 is located at the edge of the steel belt 131 near the partition 141. Multiple clamps 132 are arranged at intervals along the conveying line. Driven by the first drive assembly, the steel belt 131 moves along the conveying line. The clamps 132 clamp the circuit board 220 and pass it through the first and second board passages 140a and 140b in sequence. As can be seen from the above, the first and second drive assemblies are separately provided. When assembling the entire device, there is no need to set up a large fixed frame 110 and conventional structures such as chains. The structure proposed in this solution is more simple, practical, and highly maneuverable.

[0053] The present invention further provides a circuit board electroplating apparatus 200, which includes a plating tank 210 and a water retaining device 100 according to any of the aforementioned embodiments. The water retaining device 100 is disposed on the plating tank 210, and the water retaining mechanism 140 is disposed within the plating tank 210. Because the present circuit board electroplating apparatus 200 utilizes all of the technical solutions of all of the aforementioned embodiments, it at least has all of the beneficial effects brought about by the technical solutions of the aforementioned embodiments, which will not be detailed here.

[0054] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A water retaining device, applied to a circuit board electroplating device, wherein the circuit board electroplating device comprises an electroplating tank, characterized in that: The water retaining device comprises: A fixing frame is arranged above the electroplating tank; The driving mechanism includes a first driving assembly and a second driving assembly provided on the fixing frame; A conveying mechanism, provided on the fixing frame and in driving connection with the first driving assembly, the conveying mechanism being used for clamping the circuit board and moving it within the electroplating tank; and The water-blocking mechanism includes a partition arranged in the electroplating cylinder, a first water-blocking wheel and a second water-blocking wheel arranged on the partition, the first water-blocking wheel and / or the second water-blocking wheel are drivingly connected to the second driving component, the first water-blocking wheel and the second water-blocking wheel are arranged on the same side of the partition, and the second driving component is used to drive the first water-blocking wheel and the second water-blocking wheel to rotate in opposite directions; there is a first plate-passing channel between the first water-blocking wheel and the second water-blocking wheel, and a second plate-passing channel is provided on the partition, the transmission mechanism is used to drive the circuit board to pass through the first plate-passing channel and the second plate-passing channel in sequence, and the first water-blocking wheel and the second water-blocking wheel are used to elastically abut against the opposite sides of the circuit board.

2. The water retaining device according to claim 1, wherein: The second driving assembly includes a motor, a transmission shaft and a gear set. The motor is arranged on the fixed frame. One end of the transmission shaft is transmission-connected to the motor. The other end of the transmission shaft is transmission-connected to the first water-blocking wheel and the second water-blocking wheel through the gear set.

3. The water retaining device according to claim 2, characterized in that: The first water-blocking wheel and the second water-blocking wheel are respectively provided with a first gear and a second gear at one end away from the fixed frame, and the first gear and the second gear are meshed with each other. A third gear is provided at one end of the transmission shaft away from the motor, and the third gear is transmission-connected to the first gear or the second gear through a bridge gear.

4. The water retaining device according to claim 3, characterized in that: The second drive assembly further includes a coupling, and one end of the transmission shaft away from the gear set is transmission-connected to the motor via the coupling.

5. The water retaining device according to claim 4, characterized in that: The axis of the output shaft of the motor coincides with the axis of the transmission shaft.

6. The water retaining device according to claim 5, characterized in that: The driving mechanism further comprises a bearing, at least two of the bearings are provided on the fixing frame, and the transmission shaft is sequentially passed through the shaft holes of the two bearings.

7. The water retaining device according to claim 2, characterized in that: A first mounting plate and a second mounting plate are provided on one side of the partition, the first mounting plate and the second mounting plate are arranged along the height direction of the partition, the second mounting plate is provided at the bottom of the electroplating cylinder, the two ends of the first water retaining wheel and the second water retaining wheel are connected to the first mounting plate and the second mounting plate respectively, and the gear set is provided on the second mounting plate.

8. The water retaining device according to any one of claims 1 to 7, characterized in that: The first water-blocking wheel and the second water-blocking wheel are sponge-shaped rubber wheels.

9. The water retaining device according to claim 8, characterized in that: The conveying mechanism includes a steel belt and a clamp. The steel belt is arranged above the first water-blocking wheel and the second water-blocking wheel. The clamp is arranged on one side of the steel belt close to the first water-blocking wheel and the second water-blocking wheel to clamp the circuit board. The first driving component drives the steel belt to move so that the clamp clamps the circuit board to move.

10. A circuit board electroplating device, characterized in that: It comprises an electroplating cylinder and a water retaining device as claimed in any one of claims 1 to 9, wherein the water retaining device is arranged on the electroplating cylinder, and the water retaining mechanism is arranged in the electroplating cylinder.

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