Adding device and method for automatically adding copper balls into titanium basket in electroplating bath

Abstract

The invention discloses an adding device and method for automatically adding copper balls into a titanium basket in an electroplating bath, and relates to the technical field of adding the copper balls into the titanium basket in the electroplating bath. The workbench is further provided with an adding mechanism located on the right side of the detection mechanism and used for automatically adding copper balls into the titanium baskets. The detection mechanism comprises an electroplating bath fixedly arranged on the workbench and a titanium basket placed in the electroplating bath and supported at the bottom of the electroplating bath, and a microswitch is fixedly arranged on the bottom surface of the mounting plate; the adding mechanism comprises a hollow shaft rotationally installed in the workbench, a driven gear fixedly arranged on the outer cylindrical surface of the hollow shaft, a driving motor fixedly arranged on the workbench and a rotating disc welded to the upper end of the hollow shaft, and a plurality of copper ball temporary storage assemblies are evenly distributed on the outer edge of the rotating disc in the circumferential direction of the rotating disc. The device has the beneficial effects that the copper ball adding efficiency is greatly improved, and the copper balls can be accurately added into the titanium basket.

Description

Technical Field

[0001] The invention relates to the technical field of adding copper balls into a titanium basket in an electroplating tank, in particular to an adding device and method for automatically adding copper balls into a titanium basket in an electroplating tank. Background Art

[0002] After the circuit board is initially produced, the process requires the use of an electroplating device to electroplate a copper layer with conductive function in the inner hole of the circuit board. The structure of the electroplating device is as follows Figure 1 As shown, it comprises an electroplating tank 1, in which a titanium basket 2 made of titanium is placed on the bottom wall, and a certain number of copper balls 3 are placed in the titanium basket 2. The method of electroplating a copper layer in the inner hole of a circuit board using the electroplating device is as follows: S1. A worker adds electroplating solution into the electroplating tank 1 to ensure that the electroplating solution completely submerges the copper balls 3 in the titanium basket 2; S2, workers immerse the first batch of circuit boards into the electroplating solution of electroplating tank 1; S3, the worker clamps the negative electrode clamp of the power supply on the circuit board, and clamps the positive electrode clamp of the power supply on the titanium basket 2; S4, turn on the power supply, the copper ball 3 is gradually electrolyzed into copper ions, and the copper ions enter the electroplating solution. When the copper ions flow through the inner holes of the circuit board, the copper ions are reduced to copper due to electricity, and the reduced copper adheres to the inner holes of the circuit board, thereby achieving copper layer electroplating in the inner holes of the first batch of circuit boards; S5. After electroplating for a period of time, all the copper balls 3 in the titanium basket 2 are consumed, causing the electroplating to be stopped. Therefore, the worker needs to add a certain amount of copper balls 3 into the titanium basket 2 to ensure the continuation of the electroplating.

[0003] Among them, in step S5, when the copper balls 3 in the titanium basket 2 are consumed each time, it is necessary to manually add copper balls 3 to the titanium basket 2, and the weight of the copper balls 3 itself is relatively heavy. The manual addition of copper balls not only increases the work intensity of the workers, but also reduces the efficiency of adding copper balls 3. In addition, the titanium basket 2 is immersed in the electroplating solution, and the electroplating solution is brown, which makes it impossible for the workers to accurately see whether the copper balls 3 in the titanium basket 2 have been consumed. As a result, the workers add copper balls to the titanium basket 2 before the copper balls 3 are consumed, which leads to excessive concentration of copper ions, thereby affecting the electroplating quality of the circuit board.

[0004] Therefore, there is an urgent need for an adding device and method that can greatly improve the efficiency of copper ball addition and accurately add copper balls into a titanium basket. Summary of the invention

[0005] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a device and method for automatically adding copper balls to a titanium basket in an electroplating tank, which greatly improves the efficiency of adding copper balls and can accurately add copper balls to the titanium basket.

[0006] The object of the present invention is achieved by the following technical solutions: A device for automatically adding copper balls to a titanium basket in an electroplating tank, comprising a workbench, a detection mechanism for detecting whether the copper balls in the titanium basket have been consumed is provided on the workbench, and an adding mechanism for automatically adding copper balls to the titanium basket is also provided on the workbench, which is located on the right side of the detection mechanism; The detection mechanism includes an electroplating tank fixedly mounted on the workbench, a titanium basket placed in the electroplating tank and supported on the bottom of the electroplating tank, and a vertical plate fixedly mounted on the bottom surface of the electroplating tank, a stopper is fixedly mounted on the left end surface of the vertical plate, a mounting plate extending to the left is fixedly mounted on the top surface of the stopper, a micro switch is fixedly mounted on the bottom surface of the mounting plate, a spring of the micro switch extends below the stopper, a locking cylinder is fixedly mounted on the right end surface of the vertical plate, a piston rod of the locking cylinder penetrates the vertical plate to the left, and a locking block is fixedly mounted on the extended end; A specified number of copper balls are placed in the titanium basket, a plurality of rods penetrating downwardly through the bottom surface of the electroplating tank are fixed on the bottom surface of the titanium basket, a lifting plate is fixed between the bottom ends of the rods, a card slot is opened on the right end surface of the lifting plate, the card slot matches the outer contour of the locking block, a vertical spring in a stretched state is sleeved on each rod, the upper end of the vertical spring is fixed on the bottom surface of the electroplating tank, and the lower end of the vertical spring is fixed on the top surface of the lifting plate; The adding mechanism includes a hollow shaft rotatably installed in the workbench, a driven gear fixed on the outer cylindrical surface of the hollow shaft, a driving motor fixed on the workbench, and a turntable welded to the upper end of the hollow shaft. A driving gear is installed on the output shaft of the driving motor, and the driving gear is meshed with the driven gear. A plurality of copper ball temporary storage assemblies are evenly distributed on the outer edge of the turntable and around its circumference; the adding mechanism also includes an opening assembly for releasing the copper balls in the copper ball temporary storage assembly.

[0007] A plurality of supporting legs supported on the ground are fixedly arranged on the bottom surface of the workbench.

[0008] A sealing ring is arranged between each rod and the bottom of the electroplating tank.

[0009] A bearing seat is fixedly arranged on the bottom surface of the workbench, and the hollow shaft is rotatably installed in the bearing seat.

[0010] The copper ball temporary storage assembly located on the left side of the turntable includes a temporary storage cylinder fixed on the turntable, a rectangular groove opened in the turntable, and a guide seat fixed on the bottom surface of the turntable and located on both sides of the rectangular groove. A blocking plate that blocks the bottom port of the temporary storage cylinder is slidably penetrated between the two guide seats. A connecting plate that penetrates upward through the rectangular groove is fixed on the inner end of the blocking plate. A sink groove is opened on the top end surface of the connecting plate. A horizontal spring is fixed between the connecting plate and the guide seat on the right.

[0011] The opening assembly includes an L-plate fixed on the bottom surface of the workbench and located directly below the bearing seat, a fixing column that passes through a hollow shaft upward is fixed on the top surface of the L-plate, a bracket is fixed on the top of the fixing column, a horizontal oil cylinder is fixed on the bottom surface of the bracket, a vertical oil cylinder is fixed on the active end of the piston rod of the horizontal oil cylinder, and a square head is fixed on the active end of the piston rod of the vertical oil cylinder.

[0012] The adding device also includes a controller, which is electrically connected to the micro switch, the driving motor, the locking cylinder, the horizontal cylinder and the vertical cylinder via a signal line.

[0013] A method for automatically adding copper balls to a titanium basket in an electroplating tank comprises the following steps: S1. Workers pre-fill a specified number of copper balls into each temporary storage tube of each copper ball temporary storage assembly, and the copper balls at the bottom are just blocked by the blocking plate of the copper ball temporary storage assembly; S2. Workers add electroplating solution into the electroplating tank to ensure that the electroplating solution completely submerges the copper balls in the titanium basket; S3. Workers immerse a batch of circuit boards into the plating solution of the plating tank; S4. The worker clamps the negative electrode of the power supply onto the circuit board and the positive electrode of the power supply onto the titanium basket; S5. Turn on the power supply, the copper balls are gradually electrolyzed into copper ions, and the copper ions enter the electroplating solution. When the copper ions flow through the inner holes of the circuit board, the copper ions are reduced to copper due to electricity, and the reduced copper adheres to the inner holes of the circuit board, thereby gradually electroplating a copper layer in the inner holes of a batch of circuit boards; S6. As the copper balls in the titanium basket are gradually consumed, under the elastic restoring force of the vertical spring of the detection mechanism, the vertical spring drives the lifting plate to gradually move upward, the lifting plate drives the rod to gradually move upward, and the rod drives the titanium basket to gradually move upward. When the lifting plate is blocked by the block and the lifting plate just presses the shrapnel of the microswitch, it means that all the copper balls in the titanium basket have been completely consumed. At this time, since the shrapnel of the microswitch is pressed, the microswitch immediately sends an electrical signal to the controller, and the controller controls the piston rod of the locking cylinder to extend to the left, and the piston rod drives the locking block to move to the left, and the locking block is embedded in the card slot of the lifting plate to fix the lifting plate, and then fix the titanium basket; S7, the controller controls the driving motor of the adding mechanism to start, the driving motor drives the driving gear to rotate, the driving gear drives the driven gear to rotate, the driven gear drives the hollow shaft to rotate, the hollow shaft drives the turntable to rotate, the turntable drives the copper ball temporary storage components thereon to rotate synchronously, when the turntable rotates to the set angle, the controller controls the driving motor to turn off, at this time, the copper ball temporary storage component on the left side of the turntable is just above the titanium basket, and the sink of the copper ball temporary storage component is just below the square head of the opening component; S8, the controller controls the piston rod of the vertical oil cylinder of the opening assembly to extend downward, and the piston rod drives the square head to move downward, and the square head is embedded from top to bottom into the sink groove of the copper ball temporary storage assembly on the leftmost side of the turntable; then the controller controls the piston rod of the horizontal oil cylinder to extend to the right, and the piston rod drives the vertical oil cylinder and the square head to move to the right, and the square head drives the connecting plate of the copper ball temporary storage assembly to move to the right, and the connecting plate stretches the horizontal spring to the right, and at the same time, the connecting plate drives the blocking plate to move to the right. When the piston rod of the horizontal oil cylinder is fully extended, the blocking plate no longer blocks the bottom port of the temporary storage tube of the copper ball temporary storage assembly, and each copper ball in the temporary storage tube falls into the titanium basket under its own weight, thereby realizing the automatic addition of a specified number of copper balls into the titanium basket; S9. After adding the copper balls into the titanium basket, the worker controls the piston rod of the vertical oil cylinder of the opening assembly to retract upward, and the piston rod drives the square head to move upward. When the square head withdraws from the sink groove of the connecting plate, the horizontal spring drives the connecting plate to move to the left under the elastic restoring force of the horizontal spring, and the connecting plate drives the blocking plate to move to the left, and the blocking plate is reset; S10. The worker controls the piston rod of the locking cylinder to retract to the right, and the piston rod drives the locking block to move to the right, and the locking block withdraws from the card slot of the lifting plate. After the locking block withdraws, it moves downward under the gravity of the copper balls in the titanium basket, and the titanium basket drives the rod to move downward, and the rod drives the lifting plate to move downward until the titanium basket is supported on the bottom of the electroplating tank again. At this time, all the copper balls in the titanium basket are immersed in the electroplating solution, so that the copper layer continues to be electroplated in a batch of circuit boards; S11. Repeat steps S6 to S10 for multiple times, and add a specified number of copper balls into the titanium basket multiple times until a copper layer is electroplated in the through holes of a batch of circuit boards.

[0014] The present invention has the following advantages: greatly improving the efficiency of adding copper balls and being able to accurately add copper balls into the titanium basket. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of a certain electroplating device; Figure 2 It is a structural schematic diagram of the present invention; Figure 3 It is a structural diagram of the testing organization; Figure 4 It is a structural diagram of the adding mechanism; Figure 5 for Figure 4 A schematic diagram of the connection between the hollow shaft, the turntable and the copper ball temporary storage assembly; Figure 6 for Figure 5 A-direction schematic diagram; Figure 7 for Figure 5 The main cross-sectional diagram of Figure 8 for Figure 4 A schematic diagram of the structure of the opening component in FIG. Fig. 9 A schematic diagram of pre-filling a specified number of copper balls into each temporary storage cylinder of each copper ball temporary storage assembly; Fig.10 It is a schematic diagram of the lifting plate being blocked by the stopper and pressing the spring of the micro switch; Fig.11 for Fig.10 A partial enlarged view of part B; Fig.12 A schematic diagram for fixing the titanium basket; Fig.13 for Fig.12 A partial enlarged view of the C part; Fig.14 It is a schematic diagram of the square head being inserted from top to bottom into the sink of the copper ball temporary storage assembly on the leftmost side of the turntable; Fig.15 A schematic diagram showing that the blocking plate no longer blocks the bottom port of the temporary storage cylinder of the copper ball temporary storage assembly; Fig.16 A schematic diagram for automatically adding a specified number of copper balls into a titanium basket; Fig.17 A schematic diagram of resetting the blocking plate; Fig.18 Schematic diagram of the titanium basket being re-supported on the bottom of the electroplating tank; In the figure: 1- electroplating tank, 2- titanium basket, 3- copper ball; 4-working table, 5-detection mechanism, 6-adding mechanism, 7-vertical plate, 8-stopper, 9-micro switch, 10-spring, 11-locking cylinder, 12-locking block, 13-rod, 14-lifting plate, 15-card slot, 16-vertical spring; 17-hollow shaft, 18-driven gear, 19-driving motor, 20-turntable, 21-driving gear, 22-copper ball temporary storage assembly, 23-opening assembly, 24-temporary storage cylinder, 25-rectangular groove, 26-guide seat, 27-sealing plate, 28-connecting plate, 29-sinking groove, 30-horizontal spring, 31-L plate, 32-fixed column, 33-bracket, 34-horizontal cylinder, 35-vertical cylinder, 36-square head. DETAILED DESCRIPTION

[0016] The present invention is further described below in conjunction with the accompanying drawings, and the protection scope of the present invention is not limited to the following: like Figure 2~Figure 8 As shown, a device for automatically adding copper balls to a titanium basket in an electroplating tank comprises a workbench 4, a bottom surface of which is fixedly provided with a plurality of supporting legs supported on the ground, a detection mechanism 5 for detecting whether the copper balls 3 in the titanium basket 2 are completely consumed is arranged on the workbench 4, and an adding mechanism 6 for automatically adding copper balls 3 to the titanium basket 2 is also arranged on the workbench 4 and is located on the right side of the detection mechanism 5.

[0017] The detection mechanism 5 includes an electroplating tank 1 fixedly mounted on a workbench 4, a titanium basket 2 placed in the electroplating tank 1 and supported on the bottom of the electroplating tank 1, and a vertical plate 7 fixedly mounted on the bottom surface of the electroplating tank 1. A stopper 8 is fixedly mounted on the left end surface of the vertical plate 7. A mounting plate extending to the left is fixedly mounted on the top surface of the stopper 8. A micro switch 9 is fixedly mounted on the bottom surface of the mounting plate. A spring 10 of the micro switch 9 extends below the stopper 8. A locking cylinder 11 is fixedly mounted on the right end surface of the vertical plate 7. The piston rod of the locking cylinder 11 passes through the vertical plate 7 to the left, and a locking block 12 is fixedly mounted on the extended end. The titanium basket 2 is placed in the vertical plate 7. There are a specified number of copper balls 3, and a plurality of rods 13 are fixedly arranged on the bottom surface of the titanium basket 2 and penetrate downwardly through the bottom surface of the electroplating tank 1, and a sealing ring is arranged between each rod 13 and the bottom of the electroplating tank 1, and a lifting plate 14 is fixedly arranged between the bottom ends of each rod 13, and a card groove 15 is opened on the right end surface of the lifting plate 14, and the card groove 15 matches the outer contour of the locking block 12, and each rod 13 is sleeved with a vertical spring 16 in a stretched state, and the upper end of the vertical spring 16 is fixedly arranged on the bottom surface of the electroplating tank 1, and the lower end of the vertical spring 16 is fixedly arranged on the top surface of the lifting plate 14.

[0018] The adding mechanism 6 includes a hollow shaft 17 rotatably installed in the workbench 4, a driven gear 18 fixed on the outer cylindrical surface of the hollow shaft 17, a driving motor 19 fixed on the workbench 4, and a turntable 20 welded to the upper end of the hollow shaft 17. A bearing seat is fixed on the bottom surface of the workbench 4, and the hollow shaft 17 is rotatably installed in the bearing seat. A driving gear 21 is installed on the output shaft of the driving motor 19, and the driving gear 21 is meshed with the driven gear 18. A plurality of copper ball temporary storage assemblies 22 are evenly distributed on the outer edge of the turntable 20 and around its circumferential direction. The copper ball temporary storage assembly 22 located on the left side of the turntable 20 includes a temporary storage cylinder 24 fixedly mounted on the turntable 20, a rectangular groove 25 opened in the turntable 20, and a guide seat 26 fixedly mounted on the bottom surface of the turntable 20 and located on both sides of the rectangular groove 25. A blocking plate 27 that blocks the bottom port of the temporary storage cylinder 24 is slidably penetrated between the two guide seats 26, a connecting plate 28 that penetrates the rectangular groove 25 upwards is fixedly mounted on the inner side end of the blocking plate 27, a sinking groove 29 is opened on the top end surface of the connecting plate 28, and a horizontal spring 30 is fixedly mounted between the connecting plate 28 and the guide seat 26 on the right side.

[0019] The adding mechanism 6 also includes an opening component 23 for releasing the copper balls in the copper ball temporary storage component 22. The opening component 23 includes an L-plate 31 fixedly mounted on the bottom surface of the workbench 4 and directly below the bearing seat. A fixing column 32 that passes through the hollow shaft 17 upward is fixedly mounted on the top surface of the L-plate 31. A bracket 33 is fixedly mounted on the top of the fixing column 32. A horizontal cylinder 34 is fixedly mounted on the bottom surface of the bracket 33. A vertical cylinder 35 is fixedly mounted on the active end of the piston rod of the horizontal cylinder 34. A square head 36 is fixedly mounted on the active end of the piston rod of the vertical cylinder 35.

[0020] The adding device also includes a controller, which is electrically connected to the microswitch 9, the drive motor 19, the locking cylinder 11, the horizontal cylinder 34 and the vertical cylinder 35 via a signal line. When the spring 10 of the microswitch 9 is pressed by the lifting plate 14, the microswitch 9 will immediately send an electrical signal to the controller. The controller controls the piston rod of the locking cylinder 11 to extend to the left, thereby allowing the locking block 12 to be embedded in the slot 15 of the lifting plate 14. At the same time, the controller can also control the start or stop of the drive motor 19, and can also control the extension or retraction of the piston rods of the horizontal cylinder 34 and the vertical cylinder 35, and has the characteristics of a high degree of automation.

[0021] A method for automatically adding copper balls to a titanium basket in an electroplating tank comprises the following steps: S1. Workers pre-fill a specified number of copper balls 3 into each temporary storage tube 24 of each copper ball temporary storage assembly 22, such as Fig. 9 As shown, the copper ball 3 at the bottom layer is just blocked by the blocking plate 27 of the copper ball temporary storage assembly 22; S2, the worker adds electroplating solution into the electroplating tank 1, ensuring that the electroplating solution completely submerges the copper balls 3 in the titanium basket 2; S3, a worker immerses a batch of circuit boards into the electroplating solution of electroplating tank 1; S4, the worker clamps the negative electrode clamp of the power supply on the circuit board, and clamps the positive electrode clamp of the power supply on the titanium basket 2; S5, turning on the power supply, the copper ball 3 is gradually electrolyzed into copper ions, and the copper ions enter the electroplating solution. When the copper ions flow through the inner holes of the circuit board, the copper ions are reduced to copper due to electricity, and the reduced copper adheres to the inner holes of the circuit board, so that a copper layer is gradually electroplated in the inner holes of a batch of circuit boards; S6. As the copper balls 3 in the titanium basket 2 are gradually consumed, under the elastic restoring force of the vertical spring 16 of the detection mechanism 5, the vertical spring 16 drives the lifting plate 14 to gradually move upward, the lifting plate 14 drives the rod 13 to gradually move upward, and the rod 13 drives the titanium basket 2 to gradually move upward. When the lifting plate 14 is blocked by the block 8 and the lifting plate 14 just presses the spring 10 of the micro switch 9, as shown in FIG. Figure 10~Figure 11 As shown, it means that all the copper balls 3 in the titanium basket 2 have been completely consumed. At this time, since the spring piece 10 of the microswitch 9 is pressed, the microswitch 9 immediately sends an electrical signal to the controller, and the controller controls the piston rod of the locking cylinder 11 to extend to the left, and the piston rod drives the locking block 12 to move to the left. The locking block 12 is embedded in the card slot 15 of the lifting plate 14 to fix the lifting plate 14, and then fix the titanium basket 2. Figure 12~Figure 13 As shown; S7, the controller controls the driving motor 19 of the adding mechanism 6 to start, the driving motor 19 drives the driving gear 21 to rotate, the driving gear 21 drives the driven gear 18 to rotate, the driven gear 18 drives the hollow shaft 17 to rotate, the hollow shaft 17 drives the turntable 20 to rotate, the turntable 20 drives the various copper ball temporary storage components 22 thereon to rotate synchronously, when the turntable 20 rotates to the set angle, the controller controls the driving motor 19 to turn off, at this time, the copper ball temporary storage component 22 located on the left side of the turntable 20 is just above the titanium basket 2, and the sink 29 of the copper ball temporary storage component 22 is just below the square head 36 of the opening component 23, as shown in FIG. Fig.12 As shown; S8, the controller controls the piston rod of the vertical oil cylinder 35 of the opening assembly 23 to extend downward, and the piston rod drives the square head 36 to move downward, and the square head 36 is embedded from top to bottom into the sink 29 of the copper ball temporary storage assembly 22 on the leftmost side of the turntable 20, as shown in FIG. Fig.14As shown; then the controller controls the piston rod of the horizontal oil cylinder 34 to extend to the right, the piston rod drives the vertical oil cylinder 35 and the square head 36 to move to the right, the square head 36 drives the connecting plate 28 of the copper ball temporary storage assembly 22 to move to the right, the connecting plate 28 stretches the horizontal spring 30 to the right, and at the same time, the connecting plate 28 drives the blocking plate 27 to move to the right. When the piston rod of the horizontal oil cylinder 34 is fully extended, the blocking plate 27 no longer blocks the bottom port of the temporary storage tube 24 of the copper ball temporary storage assembly 22, as shown in FIG. Fig.15 As shown, each copper ball 3 in the temporary storage tube 24 falls into the titanium basket 2 under its own weight, thereby automatically adding a specified number of copper balls 3 into the titanium basket 2. Fig.16 As shown; S9. After adding the copper balls 3 into the titanium basket 2, the worker controls the piston rod of the vertical oil cylinder 35 of the opening assembly 23 to retract upward, and the piston rod drives the square head 36 to move upward. When the square head 36 withdraws from the sink 29 of the connecting plate 28, the horizontal spring 30 drives the connecting plate 28 to move leftward under the elastic restoring force of the horizontal spring 30, and the connecting plate 28 drives the blocking plate 27 to move leftward, and the blocking plate 27 is reset. Fig.17 As shown; S10, the worker controls the piston rod of the locking cylinder 11 to retract to the right, and the piston rod drives the locking block 12 to move to the right, and the locking block 12 withdraws from the slot 15 of the lifting plate 14. After the locking block 12 withdraws, it moves downward under the gravity of the copper ball 3 in the titanium basket 2, and the titanium basket 2 drives the rod 13 to move downward, and the rod 13 drives the lifting plate 14 to move downward until the titanium basket 2 is supported on the bottom of the electroplating tank 1 again. Fig.18 As shown, at this time, all the copper balls 3 in the titanium basket 2 are immersed in the electroplating solution, so as to continue to electroplate the copper layer in a batch of circuit boards; S11. Repeat steps S6 to S10 for multiple times, and add a specified number of copper balls 3 into the titanium basket 2 until a copper layer is electroplated in the through holes of a batch of circuit boards.

[0022] In addition, it can be seen from steps S6 to S8 that when all the copper balls 3 in the titanium basket 2 are consumed, the lifting plate 14 will be blocked by the block 8 and will just press the spring 10 of the micro switch 9, indicating that all the copper balls 3 in the titanium basket 2 have been consumed. At this time, the pressed micro switch 9 will send an electrical signal to the controller; then the controller will control the piston rod of the locking cylinder 11 to extend to the left, so that the locking block 12 is embedded in the card slot 15 of the lifting plate 14, thereby fixing the titanium basket 2; then the driving motor 19 of the adding mechanism 6 is controlled to start, so that the copper ball temporary storage assembly 22 moves to the top of the titanium basket 2; then the horizontal cylinder 34 and the vertical cylinder 35 of the opening assembly 23 are controlled to move, so that the blocking plate 27 is separated from the temporary storage tube 24. After separation, the copper balls 3 in the copper ball temporary storage assembly 22 automatically enter the titanium basket 2 under their own weight, thereby realizing the automatic and accurate addition of a specified number of copper balls into the titanium basket 2.

[0023] It can be seen that the adding device can determine whether the copper balls 3 in the titanium basket 2 have been consumed only by whether the micro switch 9 is pressed by the lifting plate 14, without the need to manually observe whether the copper balls 3 in the titanium basket 2 have been completely consumed, and thus there will be no misjudgment, so that the copper balls 3 can be accurately added to the titanium basket 2, thereby improving the electroplating quality of the circuit board. In addition, the adding device realizes the automatic addition of copper balls 3 to the titanium basket 2, without the need to manually add a specified number of copper balls 3 to the titanium basket 2, which not only greatly reduces the work intensity of the workers, but also shortens the time for adding the copper balls 3, thereby greatly improving the efficiency of adding the copper balls.

Claims

1. A device for automatically adding copper balls to a titanium basket in an electroplating tank, characterized in that: The invention comprises a workbench (4), on which a detection mechanism (5) is arranged for detecting whether the copper balls (3) in the titanium basket (2) have been completely consumed. The workbench (4) is also provided with an adding mechanism (6) located on the right side of the detection mechanism (5) for automatically adding the copper balls (3) into the titanium basket (2); The detection mechanism (5) comprises an electroplating tank (1) fixedly mounted on a workbench (4), a titanium basket (2) placed in the electroplating tank (1) and supported on the bottom of the electroplating tank (1), and a vertical plate (7) fixedly mounted on the bottom surface of the electroplating tank (1), a stopper (8) fixedly mounted on the left end surface of the vertical plate (7), a mounting plate extending to the left fixedly mounted on the top surface of the stopper (8), a micro switch (9) fixedly mounted on the bottom surface of the mounting plate, a spring sheet (10) of the micro switch (9) extending below the stopper (8), a locking cylinder (11) fixedly mounted on the right end surface of the vertical plate (7), a piston rod of the locking cylinder (11) passing through the vertical plate (7) to the left, and a locking block (12) fixedly mounted on the extended end; A specified number of copper balls (3) are placed in the titanium basket (2). A plurality of rods (13) are fixedly arranged on the bottom surface of the titanium basket (2) and penetrate downwardly through the bottom surface of the electroplating tank (1). A lifting plate (14) is fixedly arranged between the bottom ends of the rods (13). A slot (15) is provided on the right end surface of the lifting plate (14). The slot (15) matches the outer contour of the locking block (12). A vertical spring (16) in a stretched state is sleeved on each rod (13). The upper end of the vertical spring (16) is fixedly arranged on the bottom surface of the electroplating tank (1), and the lower end of the vertical spring (16) is fixedly arranged on the top surface of the lifting plate (14). The adding mechanism (6) comprises a hollow shaft (17) rotatably mounted in a workbench (4), a driven gear (18) fixedly mounted on an outer cylindrical surface of the hollow shaft (17), a driving motor (19) fixedly mounted on the workbench (4), and a rotating disk (20) welded to an upper end portion of the hollow shaft (17); a driving gear (21) is mounted on an output shaft of the driving motor (19), the driving gear (21) meshing with the driven gear (18); a plurality of copper ball temporary storage assemblies (22) are evenly distributed on an outer edge of the rotating disk (20) and around its circumference; the adding mechanism (6) further comprises an opening assembly (23) for releasing copper balls in the copper ball temporary storage assembly (22).

2. The device for automatically adding copper balls to a titanium basket in an electroplating tank according to claim 1, characterized in that: A plurality of support legs supported on the ground are fixedly arranged on the bottom surface of the workbench (4).

3. The device for automatically adding copper balls to a titanium basket in an electroplating tank according to claim 2, characterized in that: A sealing ring is provided between each rod (13) and the bottom of the electroplating tank (1).

4. The device for automatically adding copper balls to a titanium basket in an electroplating tank according to claim 3, characterized in that: A bearing seat is fixedly provided on the bottom surface of the workbench (4), and the hollow shaft (17) is rotatably mounted in the bearing seat.

5. The device for automatically adding copper balls to a titanium basket in an electroplating tank according to claim 4, characterized in that: The copper ball temporary storage assembly (22) located on the left side of the rotating disk (20) comprises a temporary storage cylinder (24) fixedly mounted on the rotating disk (20), a rectangular groove (25) formed in the rotating disk (20), and guide seats (26) fixedly mounted on the bottom surface of the rotating disk (20) and located on both sides of the rectangular groove (25). A blocking plate (27) is slidably penetrated between the two guide seats (26) to block the bottom port of the temporary storage cylinder (24). A connecting plate (28) is fixedly mounted on the inner side end of the blocking plate (27) and penetrates upward through the rectangular groove (25). A sink groove (29) is formed on the top surface of the connecting plate (28). A horizontal spring (30) is fixedly mounted between the connecting plate (28) and the right guide seat (26).

6. The device for automatically adding copper balls to a titanium basket in an electroplating tank according to claim 5, characterized in that: The opening assembly (23) comprises an L-plate (31) fixedly mounted on the bottom surface of the workbench (4) and located directly below the bearing seat; a fixing column (32) is fixedly mounted on the top surface of the L-plate (31) and passes through the hollow shaft (17) upward; a bracket (33) is fixedly mounted on the top of the fixing column (32); a horizontal oil cylinder (34) is fixedly mounted on the bottom surface of the bracket (33); a vertical oil cylinder (35) is fixedly mounted on the active end of the piston rod of the horizontal oil cylinder (34); and a square head (36) is fixedly mounted on the active end of the piston rod of the vertical oil cylinder (35).

7. The device for automatically adding copper balls to a titanium basket in an electroplating tank according to claim 6, characterized in that: The adding device also includes a controller, which is electrically connected to the micro switch (9), the drive motor (19), the locking cylinder (11), the horizontal cylinder (34) and the vertical cylinder (35) via a signal line.

8. A method for automatically adding copper balls to a titanium basket in an electroplating tank, using the device for automatically adding copper balls to a titanium basket in an electroplating tank as claimed in claim 7, characterized in that: It includes the following steps: S1. A worker pre-fills a specified number of copper balls (3) into each temporary storage tube (24) of each copper ball temporary storage assembly (22), and the copper balls (3) at the bottom layer are just blocked by the blocking plate (27) of the copper ball temporary storage assembly (22); S2. A worker adds electroplating liquid to the electroplating tank (1) to ensure that the electroplating liquid completely submerges the copper balls (3) in the titanium basket (2); S3, a worker immerses a batch of circuit boards into the plating solution in the plating tank (1); S4. The worker clamps the negative electrode of the power supply onto the circuit board and clamps the positive electrode of the power supply onto the titanium basket (2). S5, turning on the power supply, the copper ball (3) is gradually electrolyzed into copper ions, and the copper ions enter the electroplating solution. When the copper ions flow through the inner holes of the circuit board, the copper ions are reduced to copper due to the electricity, and the reduced copper adheres to the inner holes of the circuit board, thereby gradually electroplating a copper layer in the inner holes of a batch of circuit boards; S6. As the copper ball (3) in the titanium basket (2) is gradually consumed, under the elastic restoring force of the vertical spring (16) of the detection mechanism (5), the vertical spring (16) drives the lifting plate (14) to gradually move upward, the lifting plate (14) drives the rod (13) to gradually move upward, and the rod (13) drives the titanium basket (2) to gradually move upward. When the lifting plate (14) is blocked by the block (8) and the lifting plate (14) just presses the spring (10) of the micro switch (9), the lifting plate (14) is stopped. ), it means that all the copper balls (3) in the titanium basket (2) have been completely consumed. At this time, since the spring (10) of the micro switch (9) is pressed, the micro switch (9) immediately sends an electrical signal to the controller, and the controller controls the piston rod of the locking cylinder (11) to extend to the left, and the piston rod drives the locking block (12) to move to the left. The locking block (12) is embedded in the slot (15) of the lifting plate (14) to fix the lifting plate (14), thereby fixing the titanium basket (2); S7, the controller controls the driving motor (19) of the adding mechanism (6) to start, the driving motor (19) drives the driving gear (21) to rotate, the driving gear (21) drives the driven gear (18) to rotate, the driven gear (18) drives the hollow shaft (17) to rotate, the hollow shaft (17) drives the rotating disk (20) to rotate, the rotating disk (20) drives each copper ball temporary storage assembly (22) thereon to rotate synchronously, when the rotating disk (20) rotates to a set angle, the controller controls the driving motor (19) to turn off, at which time, the copper ball temporary storage assembly (22) located on the left side of the rotating disk (20) is just above the titanium basket (2), and the sink (29) of the copper ball temporary storage assembly (22) is just below the square head (36) of the opening assembly (23); S8, the controller controls the piston rod of the vertical oil cylinder (35) of the opening assembly (23) to extend downward, the piston rod drives the square head (36) to move downward, and the square head (36) is embedded from top to bottom into the sink (29) of the copper ball temporary storage assembly (22) on the leftmost side of the turntable (20); then the controller controls the piston rod of the horizontal oil cylinder (34) to extend rightward, the piston rod drives the vertical oil cylinder (35) and the square head (36) to move rightward, and the square head (36) drives the connecting plate of the copper ball temporary storage assembly (22) to the right. (28) moves to the right, the connecting plate (28) stretches the horizontal spring (30) to the right, and at the same time, the connecting plate (28) drives the blocking plate (27) to move to the right. When the piston rod of the horizontal oil cylinder (34) is fully extended, the blocking plate (27) no longer blocks the bottom port of the temporary storage cylinder (24) of the copper ball temporary storage assembly (22), and each copper ball (3) in the temporary storage cylinder (24) falls into the titanium basket (2) under its own weight, thereby realizing the automatic addition of a specified number of copper balls (3) into the titanium basket (2); S9. After the copper balls (3) are added into the titanium basket (2), the worker controls the piston rod of the vertical oil cylinder (35) of the opening assembly (23) to retract upward, and the piston rod drives the square head (36) to move upward. When the square head (36) withdraws from the sink groove (29) of the connecting plate (28), the horizontal spring (30) drives the connecting plate (28) to move leftward under the elastic restoring force of the horizontal spring (30), and the connecting plate (28) drives the blocking plate (27) to move leftward, and the blocking plate (27) is reset; S10, the worker controls the piston rod of the locking cylinder (11) to retract to the right, and the piston rod drives the locking block (12) to move to the right, and the locking block (12) withdraws from the slot (15) of the lifting plate (14). After the locking block (12) withdraws, it moves downward under the weight of the copper balls (3) in the titanium basket (2), and the titanium basket (2) drives the rod (13) to move downward, and the rod (13) drives the lifting plate (14) to move downward until the titanium basket (2) is supported on the bottom of the electroplating tank (1) again. At this time, all the copper balls (3) in the titanium basket (2) are immersed in the electroplating solution, so that the copper layer continues to be electroplated on a batch of circuit boards; S11. Repeat steps S6 to S10 for multiple times, and add a specified number of copper balls (3) into the titanium basket (2) until a copper layer is electroplated in the through holes of a batch of circuit boards.

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