PCB copper plating tank facilitating solution addition

Abstract

The application relates to the technical field of copper plating tanks, and discloses a PCB copper plating tank facilitating solution addition, which comprises an electroplating tank, the symmetrical two ends of the electroplating tank are each provided with a conveying pipe in communication with the electroplating tank, the symmetrical corners of the electroplating tank are each provided with a bearing seat, a sliding groove in communication with the electroplating tank is formed in the bearing seat, a lead screw penetrating through the bearing seat is rotationally connected between the two end side walls in the sliding groove, one end of the electroplating tank is provided with a driving unit for driving the lead screw, a sealing moving plate with a sealing effect is slidably connected in the electroplating tank, the symmetrical sides of the sealing moving plate are each fixedly connected with a sliding block rotationally connected with the lead screw, and the sliding block, the sliding groove and the lead screw are matched and sealed. In the application, the sealing moving plate and other structures are arranged, the efficiency of replacing the copper plating solution in the electroplating tank is improved, meanwhile, the sealing moving plate moves in the electroplating tank, the sealing moving plate scrapes off the residues adhered to the symmetrical long side walls and the bottom of the electroplating tank, and the purity of the new copper plating solution injected into the electroplating tank is improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of copper plating tanks, in particular to a PCB copper plating tank facilitating solution addition. BACKGROUND

[0002] PCB copper plating is an important step in the PCB manufacturing process, which can protect the circuit of the PCB board and improve the conductive performance, and the thickness and uniformity of the copper plating layer have an important influence on the performance and reliability of the PCB, so the control and processing of the copper plating step are crucial in the PCB manufacturing process, and a copper plating tank needs to be used when the PCB needs to be plated with copper, the copper plating tank is filled with chemical copper plating solution, and the PCB is placed in the copper plating tank for copper plating operation after a series of processing.

[0003] Since the chemical copper plating solution will fail after long-term copper plating, the failed chemical copper plating solution needs to be replaced, in order to facilitate the replacement of the chemical copper plating solution in the copper plating tank, the prior art has made many improvements to the copper plating tank, such as the patent with the patent number CN108754587A, which discloses a PCB copper plating tank facilitating solution addition, comprising a box body, an electroplating tank, a plugging assembly one, a liquid discharge port, a waste liquid cavity, an electroplating liquid cavity, a push plate, a ball nut seat, a liquid injection port and a plugging assembly two, the electroplating tank is arranged at the upper end inside the box body, the liquid discharge port is arranged at the left part of the lower side of the electroplating tank, and the liquid discharge port is connected with the inside of the waste liquid cavity, the waste liquid cavity is arranged at the lower end inside the box body, the plugging assembly one is installed at the upper end of the liquid discharge port, the electroplating liquid cavity is arranged at the lower end inside the box body on the right side of the waste liquid cavity, the push plate is installed inside the electroplating liquid cavity, the ball nut seat is embedded in the middle position of the upper end surface of the push plate, the liquid injection port is arranged at the right part of the upper side of the electroplating liquid cavity, and the plugging assembly two is installed at the upper end of the liquid injection port, which facilitates the discharge of waste liquid and the addition of electroplating liquid, and the application is convenient to use, facilitates solution addition, can effectively prevent liquid from spilling during the liquid replacement process, and has high reliability.

[0004] The above-mentioned patent has obvious beneficial effects, but still has the following deficiencies in actual operation:

[0005] The electroplating tank is a basic device in the PCB copper plating equipment, and its main function is to device solution, the existing electroplating tank usually inputs through an input pipe when the copper plating solution needs to be replaced, but the failed copper plating solution needs to be completely discharged, and manual cleaning of the inside of the electroplating tank is needed, after the residual copper plating solution adhered to the inner wall of the electroplating tank is cleaned, the copper plating solution can be added to the electroplating tank, so as to prevent the residual or sediment in the electroplating tank from polluting the new copper plating solution, so a long time is needed for replacing the copper plating solution, and the operation is complicated, which reduces the efficiency of replacing the copper plating solution in the electroplating tank, therefore, the PCB copper plating tank facilitating solution addition needs to be improved in the field, so as to solve the defects of the prior art. SUMMARY

[0006] In view of the deficiencies of the prior art, the present application provides a PCB copper plating tank facilitating solution addition, improves the efficiency of replacing the copper plating solution in the electroplating tank, and meanwhile, the sealing moving plate moves in the electroplating tank, scrapes the residues adhered to the symmetrical long side walls and the bottom of the electroplating tank, and improves the purity of the new copper plating solution injected into the electroplating tank.

[0007] To achieve the above object, the present application provides the following technical scheme: a PCB copper plating tank facilitating solution addition, comprising an electroplating tank, symmetrical two ends of the electroplating tank are provided with a delivery pipe in communication with the electroplating tank, symmetrical corners of the electroplating tank are provided with a bearing seat, the bearing seat is provided with a sliding groove in communication with the electroplating tank, a lead screw penetrating through the bearing seat is rotatably connected between the two end side walls in the sliding groove, one end of the electroplating tank is provided with a driving unit driving the lead screw, the electroplating tank is slidably connected with a sealing moving plate having a sealing effect, symmetrical sides of the sealing moving plate are fixedly connected with sliding blocks rotatably connected with the lead screw, the sliding blocks and the sliding groove are adapted to the lead screw and are sealed, the two end sides of the lead screw in the sliding groove are light rods and are slidably connected with gears, the two end sides of the lead screw are provided with a plurality of side sliding openings adapted to the gears, an elastic member is arranged between one side of the gear and the inner side wall of the sliding groove and is sleeved on the side of the lead screw, upper sides of the two ends of the electroplating tank are fixedly connected with bearing plates, opposite sides of the bearing plates are slidably connected with racks adapted to the gears, the opposite sides of the racks are fixedly connected with cleaning plates, the side of the cleaning plate is abutted against the inner side wall of the electroplating tank, and the opposite sides of the two bearing plates are provided with a pullback unit pulling the racks.

[0008] Preferably, the driving unit comprises a speed reducer, a first transmission wheel is rotatably connected to the side of one end of the electroplating tank, the output end of the speed reducer is fixedly connected with the first transmission wheel, the end of the lead screw penetrating through the bearing seat is fixedly connected with a second transmission wheel adapted to the first transmission wheel, the side of the first transmission wheel and the side of the second transmission wheel are provided with adapted transmission grooves, and a transmission belt adapted to the transmission grooves is sleeved between the first transmission wheel and the second transmission wheel.

[0009] Preferably, the pullback unit comprises a traction rope fixedly connected to the upper end of the rack at one end, the other end of the traction rope extends to the outside of the electroplating tank and is fixedly connected with a bearing disc, a counterweight plate is placed in the bearing disc, symmetrical fixed plates are fixedly connected to the upper side of the bearing plate and the side away from the rack, and a sliding wheel adapted to the traction rope is rotatably connected between the two fixed plates.

[0010] Preferably, the electroplating tank is fixedly connected with a supporting plate at the symmetrical two ends, the upper side of the supporting plate is fixedly connected with an adsorbing magnet, and the adsorbing magnet and the bearing disc are adsorbed to each other.

[0011] Preferably, a limiting frame adapted to the rack is fixedly connected to the side of the bearing plate near the cleaning plate, and a first moving groove adapted to the rack is opened on each of the symmetrical side walls of the electroplating tank, and a second moving groove adapted to the rack is opened at both ends of the sliding groove.

[0012] Preferably, one end of the electroplating tank is slidably connected to an adjusting wheel adapted to the transmission belt and having a transmission groove on its side. The transmission belt is wound around the transmission groove on the first transmission wheel, the second transmission wheel, and the adjusting wheel. The adjusting wheel has an adjusting threaded rod on its side. One end of the electroplating tank is fixedly connected to a fixing block. The adjusting threaded rod is threadedly connected to the fixing block. The adjusting threaded rod has symmetrical limiting rings threadedly connected to its side.

[0013] Preferably, one end of the adjusting threaded rod is rotatably connected to an L-shaped support frame, and a support plate is fixedly connected to the side of the support frame by screws. The adjusting wheel is rotatably connected between the support frame and the support plate.

[0014] Preferably, one end of the electroplating tank has a sliding port that communicates with the outside, and the support frame is slidably connected inside the sliding port.

[0015] Preferably, the bottom of the electroplating tank has V-shaped flow ports at both ends that are connected to the outside, and the flow ports are connected to the conveying pipe.

[0016] Preferably, connecting plates are sleeved at both ends of the lead screw, the connecting plates are located between the gear and the elastic element, and a U-shaped fixing frame is fixedly connected to the end of the geared motor away from the electroplating tank. Mounting plates are fixedly connected to the sides of both ends of the fixing frame, and the mounting plates are fixedly connected to one end of the electroplating tank through mounting parts.

[0017] To address the shortcomings of existing technologies, this invention provides a PCB copper plating bath that facilitates solution addition, overcoming the deficiencies of existing technologies. The beneficial effects of this invention are as follows:

[0018] This invention utilizes a sealing moving plate. By opening a switch on a conveying pipe at one end of the electroplating tank and collecting the expired copper plating solution using pipes and collection tools, a new copper plating solution is fed into the tank via the other end of the conveying pipe. Opening the switch on the conveying pipe simultaneously activates the drive unit, which drives a lead screw within the support seat. The rotation of the lead screw causes a sliding block to move within a sliding groove, which in turn moves the sealing moving plate within the electroplating tank. At this point, the cavity within the electroplating tank is divided into two parts. In one part, the movement of the sealing moving plate forces the expired copper plating solution through a conveying pipe for discharge. In the other part, new copper plating solution is injected through another conveying pipe, improving the efficiency of copper plating solution replacement within the electroplating tank. Simultaneously, the moving sealing moving plate scrapes away residue adhering to the symmetrical long sidewalls and bottom of the electroplating tank, increasing the purity of the new copper plating solution injected into the tank.

[0019] The present application is characterized in that the gear, the rack and the cleaning plate are arranged, the two end sides of the screw rod in the sliding groove are smooth round rods, a plurality of sliding openings adapted to the inner cavity of the gear are arranged on the side of the smooth round rod of the screw rod, when the sliding block is moved to the position where the smooth round rod of the screw rod intersects with the screw thread, the sliding block pushes the gear to move along the plurality of sliding openings, the gear extrudes the elastic member to contract, wherein the elastic member can be a spring, when the sliding block pushes the gear to move on the smooth round rod, the gear is in meshing relationship with the rack while rotating, the gear continues to rotate to drive the rack to move downward, the two symmetrical racks drive the cleaning plate to move downward, at this time, the sliding block does not displace because it is not supported by the screw thread on the screw rod, the symmetrical long sides of the cleaning plate abut against the inner side wall of the electroplating tank and one side of the sealing moving plate and move downward, and the one side of the sealing moving plate and the inner side wall of the electroplating tank are cleaned.

[0020] The present application is characterized in that the first transmission wheel and a plurality of second transmission wheels are arranged, the output end of the speed reducer motor is fixedly connected with the first transmission wheel, when the speed reducer motor is started, the output end of the speed reducer motor drives the first transmission wheel to rotate, the first transmission wheel drives a plurality of second transmission wheels to rotate through the transmission belt, and the plurality of second transmission wheels drive the screw rod in the bearing seat to rotate, so that a plurality of screw rods are simultaneously driven to rotate by one speed reducer motor, thereby saving certain resources.

[0021] The present application is characterized in that the first transmission wheel and a plurality of second transmission wheels are arranged, the output end of the speed reducer motor is fixedly connected with the first transmission wheel, when the speed reducer motor is started, the output end of the speed reducer motor drives the first transmission wheel to rotate, the first transmission wheel drives a plurality of second transmission wheels to rotate through the transmission belt, and the plurality of second transmission wheels drive the screw rod in the bearing seat to rotate, so that a plurality of screw rods are simultaneously driven to rotate by one speed reducer motor, thereby saving certain resources.

[0022] The present application is characterized in that the first transmission wheel and a plurality of second transmission wheels are arranged, the output end of the speed reducer motor is fixedly connected with the first transmission wheel, when the speed reducer motor is started, the output end of the speed reducer motor drives the first transmission wheel to rotate, the first transmission wheel drives a plurality of second transmission wheels to rotate through the transmission belt, and the plurality of second transmission wheels drive the screw rod in the bearing seat to rotate, so that a plurality of screw rods are simultaneously driven to rotate by one speed reducer motor, thereby saving certain resources.

[0023] Additional features and advantages of the present application will be set forth in the description that follows, and in part will be apparent from the description, or can be learned by practice of the application. The objectives and other advantages of the present application will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings. BRIEF DESCRIPTION OF DRAWINGS

[0024] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description, serve to explain the application.

[0025] Figure 1 is a schematic view of the overall structure of the present application;

[0026] Figure 2 is a schematic view of the overall structure of the present application from another perspective;

[0027] Figure 3 is a schematic view of the partial section of the electroplating tank in the present application;

[0028] Figure 4 is a schematic view of the connection between the sealing moving plate and the screw rod in the present application;

[0029] Figure 5 is a schematic view of the connection between the sealing moving plate and the screw rod in the present application;

[0030] Figure 6 is a schematic view of the connection between the sealing moving plate and the screw rod in the present application;

[0031] Figure 7 is a schematic view of the connection between the sealing moving plate and the screw rod in the present application; Figure 1 is a schematic view of the connection between the sealing moving plate and the screw rod in the present application;

[0032] Figure 8 is a schematic view of the connection between the sealing moving plate and the screw rod in the present application; Figure 1 is a schematic view of the connection between the sealing moving plate and the screw rod in the present application;

[0033] Figure 9 is a schematic view of the connection between the sealing moving plate and the screw rod in the present application; Figure 3 is a schematic view of the connection between the sealing moving plate and the screw rod in the present application;

[0034] Figure 10 is a schematic view of the connection between the sealing moving plate and the screw rod in the present application; Figure 3 is a schematic view of the connection between the sealing moving plate and the screw rod in the present application;

[0035] Figure 11 is a schematic view of the connection between the sealing moving plate and the screw rod in the present application; Figure 4 is a schematic view of the connection between the sealing moving plate and the screw rod in the present application;

[0036] Figure 12 is a schematic view of the connection between the sealing moving plate and the screw rod in the present application; Figure 4 is a schematic view of the connection between the sealing moving plate and the screw rod in the present application;

[0037] Figure 13 is a schematic view of the connection between the sealing moving plate and the screw rod in the present application; Figure 5 is a schematic view of the connection between the sealing moving plate and the screw rod in the present application;

[0038] Figure 14 For Figure 6 Enlargement structure schematic view at H.

[0039] In the figure: 1, electroplating tank; 2, conveying pipe; 3, bearing seat; 4, sliding groove; 5, screw rod; 6, driving unit; 7, sealing moving plate; 8, sliding block; 9, gear; 10, multi-edge sliding port; 11, elastic member; 12, bearing plate; 13, rack; 14, cleaning plate; 15, speed reducer motor; 16, first transmission wheel; 17, second transmission wheel; 18, transmission groove; 19, transmission belt; 20, traction rope; 21, bearing disc; 22, counterweight plate; 23, adsorption magnet; 24, fixed plate; 25, sliding wheel; 26, limiting frame; 27, first moving groove; 28, second moving groove; 29, adjusting wheel; 30, support frame; 31, sliding port; 32, fixed block; 33, adjusting threaded rod; 34, limiting ring; 35, support plate; 36, flow port; 37, supporting plate; 38, fixing frame; 39, mounting plate; 40, connecting plate. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0041] Please refer to Figures 1-14 A PCB copper plating tank facilitating solution addition, comprising an electroplating tank 1, the electroplating tank 1 is symmetrically provided with conveying pipes 2 communicating with the electroplating tank 1 at both ends, the electroplating tank 1 is symmetrically provided with bearing seats 3 at the corners, the bearing seats 3 are provided with sliding grooves 4 communicating with the electroplating tank 1, the sliding grooves 4 are rotatably connected with screw rods 5 penetrating through the bearing seats 3 at both ends of the side walls, one end of the electroplating tank 1 is provided with a driving unit 6 driving the screw rods 5, the electroplating tank 1 is slidably connected with sealing moving plates 7 having sealing effect, the sealing moving plates 7 are fixedly connected with the sliding blocks 8 rotatably connected with the screw rods 5 at the symmetric sides, the sliding blocks 8 are matched with the sliding grooves 4 and the screw rods 5 and are sealed, the screw rods 5 are light rods at both ends of the sliding grooves 4 and are slidably connected with gears 9, the screw rods 5 are provided with multi-edge sliding ports 10 matched with the gears 9 at both ends of the side walls, the gears 9 are provided with elastic members 11 sleeved on the side walls of the screw rods 5 between one side and the sliding grooves 4, the electroplating tank 1 is fixedly connected with bearing plates 12 at both upper sides, the bearing plates 12 are slidably connected with racks 13 matched with the gears 9 at opposite sides, the racks 13 are fixedly connected with cleaning plates 14 at opposite sides, the cleaning plates 14 are abutted with the inner side walls of the electroplating tank 1 at the sides, and the two bearing plates 12 are provided with pull-back units pulling the racks 13 at opposite sides.

[0042] The specific implementation in the embodiment: the electroplating tank 1 in the embodiment is the same in structure and principle as the copper plating tank used for plating copper on PCB in the prior art. When the copper plating solution in the electroplating tank 1 needs to be replaced in the embodiment, the switch on the conveying pipe 2 at one end of the electroplating tank 1 is opened, and the pipeline and the collection tool are used to collect the failed copper plating solution. At the same time, the other end of the conveying pipe 2 is connected to the feeding device of the new copper plating solution. The switch on the conveying pipe 2 is opened at the same time, and the driving unit 6 is opened. The driving unit 6 drives the lead screw 5 in the bearing seat 3. The lead screw 5 rotates to drive the sliding block 8 to move in the sliding groove 4. The sliding block 8 drives the sealing moving plate 7 to move in the electroplating tank 1. At this time, the cavity in the electroplating tank 1 is divided into two parts. The movement of the sealing moving plate 7 in one part of the cavity extrudes the failed copper plating solution to one conveying pipe 2 for discharge. The other part of the cavity injects the new copper plating solution through the other conveying pipe 2. The efficiency of replacing the copper plating solution in the electroplating tank 1 is improved. At the same time, the sealing moving plate 7 moves in the electroplating tank 1. The sealing moving plate 7 scrapes the residues adhered to the symmetrical long side walls and the bottom of the electroplating tank 1, improving the purity of the new copper plating solution injected into the electroplating tank 1.

[0043] The two end sides of the lead screw 5 in the sliding groove 4 are smooth round rods. The smooth round rod position side of the lead screw 5 is provided with a multi-edge sliding port 10 matched with the inner cavity of the gear 9. When the lead screw 5 rotates to drive the sliding block 8 to move to the position where the two end smooth round rods of the lead screw 5 intersect with the teeth, the sliding block 8 drives the gear 9 to move along the multi-edge sliding port 10. The gear 9 extrudes the elastic member 11 to contract. Here, the elastic member 11 can be a spring. When the sliding block 8 drives the gear 9 to move on the smooth round rod, the gear 9 is in meshing relationship with the rack 13 while rotating. The gear 9 continues to rotate to drive the rack 13 to move downward. The two symmetrical racks 13 drive the cleaning plate 14 to move downward. At this time, the sliding block 8 does not displace because it is not supported by the teeth of the lead screw 5. The symmetrical long side surfaces of the cleaning plate 14 abut against and move downward relative to the inner side wall of the electroplating tank 1 and one side of the sealing moving plate 7, respectively, to clean the inner side wall of the electroplating tank 1 and one side of the sealing moving plate 7.

[0044] When the cleaning plate 14 moves to its lowest limit, the drive unit 6 stops outputting. The symmetrical sides of the sliding block 8 are equipped with sealing rubber pads that match the lead screw 5. Sealing pads are also provided on the sides of the sealing moving plate 7 to ensure its sealing effect. When the copper plating solution in the electroplating tank 1 needs to be replaced again, the drive unit 6 reverses its operation, causing the lead screw 5 to reverse. Because the elastic element 11 always exerts tension on the gear 9, the elastic element 11 compresses the gear 9, and the gear 9 compresses the internal threads of the sliding block 8 and the external threads on the lead screw 5. Therefore, the sliding block 8 is reconnected to the threads on the lead screw 5. When the lead screw 5 rotates, it still drives the sliding block 8 to move in the sliding groove 4. The gear 9 is still squeezed by the tension of the elastic element 11 and slides outside the polygonal sliding mouth 10. At this time, the gear 9 is disengaged from the rack 13. The pull-back unit provided on one side of the bearing plate 12 pulls the rack 13 back to the starting position. At the same time, the position of the copper plating liquid released and the copper plating liquid injected by the switching conveyor pipe 2 is changed. The efficiency of changing the copper plating liquid in the electroplating tank 1 is still improved in the above manner.

[0045] As a technical optimization of the present invention, the drive unit 6 includes a geared motor 15, a first transmission wheel 16 is rotatably connected to one side of the electroplating tank 1, the output end of the geared motor 15 is fixedly connected to the first transmission wheel 16, and a second transmission wheel 17 adapted to the first transmission wheel 16 is fixedly connected to one end of the lead screw 5 through the bearing seat 3. The first transmission wheel 16 and the second transmission wheel 17 are both provided with adapted transmission grooves 18 on their sides, and a transmission belt 19 adapted to the transmission grooves 18 is staggered between the first transmission wheel 16 and a plurality of second transmission wheels 17.

[0046] Specifically, the output end of the geared motor 15 is fixedly connected to the first transmission wheel 16. When the geared motor 15 is started, the output end of the geared motor 15 drives the first transmission wheel 16 to rotate. The first transmission wheel 16 drives several second transmission wheels 17 to rotate through the transmission belt 19. The rotation of the several second transmission wheels 17 drives the lead screw 5 in the bearing seat 3 to rotate. By having one geared motor 15 drive several lead screws 5 to rotate simultaneously, certain resources are saved. At the same time, in this embodiment, there are four lead screws 5, which drive the four corners of the sealing moving plate 7 to move respectively, improving the stability of the sealing moving plate 7 during movement and reducing the occurrence of jamming. The first transmission wheel 16 and the second transmission wheel 17 are both provided with transmission grooves 18 that are adapted to the transmission belt 19. There are two transmission grooves 18, and the two sets of transmission belts 19 are respectively engaged and sleeved in the two misaligned transmission grooves 18.

[0047] The geared motor 15 mentioned above can be purchased from the market. It is a mature technology that has been fully disclosed, so it will not be repeated in the manual. The geared motor 15 is equipped with a power connection line, and it is electrically connected to the external main controller and 220V phase voltage (or 380V line voltage) through the power connection line. The main controller can be a conventional known device such as a computer that plays a control role.

[0048] As a technical optimization of the present invention, the pull-back unit includes a traction rope 20 with one end fixedly connected to the upper end of the rack 13, the other end of the traction rope 20 extending to the outside of the electroplating tank 1 and fixedly connected to a bearing plate 21, a counterweight plate 22 placed inside the bearing plate 21, and symmetrical fixing plates 24 fixedly connected to the upper side and the side away from the rack 13 of the bearing plate 12, and a sliding wheel 25 adapted to the traction rope 20 rotatably connected between the two fixing plates 24.

[0049] Specifically, one end of the traction rope 20 is fixedly connected to the upper end of the rack 13, and the other end of the traction rope 20 is wound around the side of several sliding wheels 25. The other end of the traction rope 20 is fixedly connected to the bearing plate 21. By placing the appropriate counterweight plate 22 on the bearing plate 21, the rack 13 is pulled upward. When the gear 9 disengages from the rack 13, the rack 13 is ensured to return to the starting position. The rack 13 drives the cleaning plate 14 back to the starting position.

[0050] As a technical optimization of the present invention, the electroplating tank 1 is fixedly connected to both ends of the symmetrical support plate 37. The support plate 37 is fixedly connected to the upper side of the support plate 37. The adsorption magnet 23 and the carrier plate 21 are attracted to each other. The carrier plate 21 is attracted by the adsorption magnet 23 to prevent the carrier plate 21 from shaking in the air, which would cause the rack 13 to be unstable.

[0051] As a technical optimization of the present invention, a limiting frame 26 adapted to the rack 13 is fixedly connected to the side of the bearing plate 12 near the cleaning plate 14. The symmetrical sidewalls of the electroplating tank 1 are provided with first moving grooves 27 adapted to the rack 13. The sliding groove 4 is provided with second moving grooves 28 adapted to the rack 13 at both ends. The limiting frame 26 further limits the position of the rack 13 to ensure that the gear 9 and the rack 13 mesh smoothly in the next operation.

[0052] As a technical optimization of the present invention, one end of the electroplating tank 1 is slidably connected to an adjusting wheel 29 adapted to the transmission belt 19 and having a transmission groove 18 on its side. The transmission belt 19 is wound in the transmission groove 18 on the first transmission wheel 16, the second transmission wheel 17 and the adjusting wheel 29. The adjusting wheel 29 has an adjusting threaded rod 33 on its side. One end of the electroplating tank 1 is fixedly connected to a fixing block 32. The adjusting threaded rod 33 is threadedly connected to the fixing block 32. The adjusting threaded rod 33 has symmetrical limiting rings 34 threadedly connected to its side. One end of the adjusting threaded rod 33 is rotatably connected to an L-shaped support frame 30. The side of the support frame 30 is fixedly connected to a support plate 35 by screws. The adjusting wheel 29 is rotatably connected between the support frame 30 and the support plate 35. One end of the electroplating tank 1 has a sliding port 31 communicating with the outside. The support frame 30 is slidably connected in the sliding port 31.

[0053] Specifically, the adjusting threaded rod 33 is threaded into the threaded hole on the fixed block 32. After rotating the adjusting threaded rod 33, the position of the support frame 30 is moved. The movement of the support frame 30 and the support plate 35 drives the adjusting wheel 29 to move, thereby adjusting the transmission belt 19 and facilitating the adjustment of the tension of the transmission belt 19. At the same time, the support frame 30 moves within the sliding port 31, which limits the movement of the support frame 30. After the position of the support frame 30 is adjusted, the symmetrical limiting rings 34 are tightened. The two limiting rings 34 are located on the symmetrical plane of the fixed block 32, limiting the adjusting threaded rod 33. If it is necessary to replace the transmission belt 19, the support plate 35 can be disassembled to facilitate the replacement of the transmission belt 19.

[0054] As a technical optimization of the present invention, the bottom of the electroplating tank 1 is provided with V-shaped flow ports 36 that are connected to the outside. The flow ports 36 are connected to the conveying pipe 2 to improve the fluidity of the copper plating solution. At the same time, the width of the flow ports 36 is adapted to the width of the cleaning plate 14.

[0055] As a technical optimization of the present invention, connecting plates 40 are sleeved at both ends of the lead screw 5. The connecting plates 40 are located between the gear 9 and the elastic element 11. A U-shaped fixing frame 38 is fixedly connected to the end of the geared motor 15 away from the electroplating tank 1. Mounting plates 39 are fixedly connected to the sides of both ends of the fixing frame 38. The mounting plates 39 are fixedly connected to one end of the electroplating tank 1 through mounting parts. The connecting plates 40 reduce the friction between the gear 9 and the elastic element 11. When installing the geared motor 15, the fixing frame 38 is fixed by screws and other mounting parts cooperating with the mounting holes on the mounting plate 39, which facilitates the maintenance or replacement of the transmission belt 19 or the geared motor 15 in the later stage.

[0056] Finally, it should be noted that in the description of this invention, the terms "vertical," "upper," "lower," "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0057] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0058] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A PCB copper plating tank for easy solution addition, comprising an electroplating tank (1), wherein both ends of the electroplating tank (1) are provided with conveying pipes (2) communicating with the inside of the electroplating tank (1), characterized in that, The electroplating tank (1) is provided with a bearing seat (3) at each of its symmetrical corners. A sliding groove (4) communicating with the electroplating tank (1) is provided in the bearing seat (3). A lead screw (5) with one end passing through the bearing seat (3) is rotatably connected between the two side walls of the sliding groove (4). A drive unit (6) for driving the lead screw (5) is provided at one end of the electroplating tank (1). A sealing moving plate (7) with a sealing effect is slidably connected in the electroplating tank (1). Sliding blocks (8) rotatably connected to the lead screw (5) are fixedly connected to the symmetrical sides of the sealing moving plate (7). The sliding blocks (8) are adapted to and sealed with the sliding groove (4) and the lead screw (5). The two sides of the lead screw (5) in the sliding groove (4) are sealed. The screw (5) is a smooth rod with a sliding connection to a gear (9). The two ends of the screw (5) are provided with polygonal sliding openings (10) that are compatible with the gear (9). An elastic element (11) is provided between one side of the gear (9) and the inner wall of the sliding groove (4) and sleeved on the side of the screw (5). The upper sides of both ends of the electroplating tank (1) are fixedly connected to a bearing plate (12). The opposite sides of the bearing plate (12) are slidably connected to a rack (13) that is compatible with the gear (9). The opposite sides of the rack (13) are fixedly connected to a cleaning plate (14). The side of the cleaning plate (14) abuts against the inner wall of the electroplating tank (1). The opposite sides of the two bearing plates (12) are provided with a pull-back unit that pulls the rack (13).

2. The PCB copper plating bath for easy solution addition according to claim 1, characterized in that, The drive unit (6) includes a geared motor (15), a first transmission wheel (16) is rotatably connected to one side of the electroplating tank (1), the output end of the geared motor (15) is fixedly connected to the first transmission wheel (16), and a second transmission wheel (17) adapted to the first transmission wheel (16) is fixedly connected to one end of the lead screw (5) that passes through the bearing seat (3). The first transmission wheel (16) and the second transmission wheel (17) are both provided with a matching transmission groove (18) on their sides. A transmission belt (19) adapted to the transmission groove (18) is staggered between the first transmission wheel (16) and several second transmission wheels (17).

3. The PCB copper plating bath for easy solution addition according to claim 1, characterized in that, The pull-back unit includes a traction rope (20) with one end fixedly connected to the upper end of the rack (13). The other end of the traction rope (20) extends to the outside of the electroplating tank (1) and is fixedly connected to a bearing plate (21). A counterweight plate (22) is placed inside the bearing plate (21). Symmetrical fixing plates (24) are fixedly connected to the upper side of the bearing plate (12) and the side away from the rack (13). A sliding wheel (25) adapted to the traction rope (20) is rotatably connected between the two fixing plates (24).

4. A PCB copper plating bath for easy solution addition according to claim 3, characterized in that, The electroplating tank (1) has a support plate (37) fixedly connected to both ends on a symmetrical basis. An adsorption magnet (23) is fixedly connected to the upper side of the support plate (37). The adsorption magnet (23) and the carrier plate (21) are attracted to each other.

5. A PCB copper plating bath for easy solution addition according to claim 1, characterized in that, A limiting frame (26) adapted to the rack (13) is fixedly connected to the side of the bearing plate (12) near the cleaning plate (14). The symmetrical side walls of the electroplating tank (1) are provided with a first moving groove (27) adapted to the rack (13), and the sliding groove (4) is provided with a second moving groove (28) adapted to the rack (13) at both ends.

6. A PCB copper plating bath for easy solution addition according to claim 2, characterized in that, One end of the electroplating tank (1) is slidably connected to an adjusting wheel (29) that is adapted to the transmission belt (19) and has a transmission groove (18) on its side. The transmission belt (19) is wound in the transmission groove (18) on the first transmission wheel (16), the second transmission wheel (17) and the adjusting wheel (29). The adjusting wheel (29) has an adjusting threaded rod (33) on its side. One end of the electroplating tank (1) is fixedly connected to a fixing block (32). The adjusting threaded rod (33) is threadedly connected to the fixing block (32). The adjusting threaded rod (33) has symmetrical limiting rings (34) threadedly connected to its side.

7. A PCB copper plating bath for easy solution addition according to claim 6, characterized in that, One end of the adjusting threaded rod (33) is rotatably connected to an L-shaped support frame (30), and a support plate (35) is fixedly connected to the side of the support frame (30) by screws. The adjusting wheel (29) is rotatably connected between the support frame (30) and the support plate (35).

8. A PCB copper plating bath for easy solution addition according to claim 7, characterized in that, One end of the electroplating tank (1) is provided with a sliding port (31) that communicates with the outside, and the support frame (30) is slidably connected in the sliding port (31).

9. A PCB copper plating bath for easy solution addition according to claim 1, characterized in that, The bottom of the electroplating tank (1) has V-shaped flow ports (36) that are connected to the outside. The flow ports (36) are connected to the conveying pipe (2).

10. A PCB copper plating bath for easy solution addition according to claim 2, characterized in that, Connecting plates (40) are fitted at both ends of the lead screw (5). The connecting plates (40) are located between the gear (9) and the elastic element (11). A U-shaped fixing frame (38) is fixedly connected to one end of the geared motor (15) away from the electroplating tank (1). Mounting plates (39) are fixedly connected to the sides of both ends of the fixing frame (38). The mounting plates (39) are fixedly connected to one end of the electroplating tank (1) through the mounting parts.

Images