Reaction tanks and production lines for desmearing, copper deposition, electroplating and chemical nickel-gold deposition

Abstract

The present invention discloses a reaction tank and a production line for desmearing, copper plating, electroplating, and chemical nickel-gold plating, comprising a tank body; a first liquid spray assembly and a second liquid spray assembly, the first liquid spray assembly and the second liquid spray assembly being symmetrically arranged in the tank body, a reaction chamber being formed between the first liquid spray assembly and the second liquid spray assembly, the first liquid spray assembly and the second liquid spray assembly both comprising a baffle and a water outlet pipe located on the side of the baffle facing away from the reaction chamber, the water outlet pipe being fixedly arranged on the baffle; the first water inlet channel being arranged on the tank body; the second water inlet channel being arranged on the tank body, the water outlet pipes of the first liquid spray assembly and the second water inlet channel being connected respectively; the water outlet channel being arranged at the lower part of the tank body, the water outlet channel being connected to the reaction chamber. The present invention solves the problem in the prior art of insufficient flow rate of the water spray pipes on both sides caused by diversion through a water inlet channel.

Description

Technical Field

[0001] The present invention relates to the field of PTH automated production equipment, in particular to a reaction tank and a production line for desmearing, copper deposition, electroplating and chemical nickel-gold deposition. Background Art

[0002] In the existing production lines for desmearing, copper deposition, electroplating and chemical nickel-gold deposition, the workpiece is carried by a flying rake mechanism into a reaction tank, and the corresponding aqueous solution is added to the reaction tank so that the workpiece is immersed in the aqueous solution and reacts. The workpiece is transported in a certain direction in the reaction tank so that the workpiece can fully react within a predetermined time.

[0003] In the prior art, the water spray pipes on both sides of the workpiece in the reaction tank use the same water inlet channel, that is, they are connected to different water spray pipes on both sides through one water inlet channel. After the flow is diverted, the flow rate sprayed from the water spray pipes on both sides is insufficient.

[0004] Therefore, the existing technology still needs to be improved and developed. Summary of the Invention

[0005] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a reaction tank and a production line for desmearing, copper deposition, electroplating and chemical nickel-gold deposition, so as to solve the problem in the prior art of insufficient flow rate sprayed out of the water pipes on both sides after diversion through a water inlet channel.

[0006] The technical solutions of the present invention are as follows:

[0007] A reaction tank comprising:

[0008] trough body;

[0009] a first liquid spray assembly and a second liquid spray assembly, the first liquid spray assembly and the second liquid spray assembly being symmetrically arranged in the tank body, the first liquid spray assembly and the second liquid spray assembly being spaced apart to form a reaction chamber, the first liquid spray assembly and the second liquid spray assembly both comprising a baffle and a water outlet pipe located on a side of the baffle facing away from the reaction chamber, the water outlet pipe being fixedly arranged on the baffle;

[0010] a first water inlet channel, wherein the first water inlet channel is provided on the tank body;

[0011] a second water inlet channel, the second water inlet channel being arranged on the tank body;

[0012] Wherein, the outlet pipes of the first liquid spray assembly and the second liquid spray assembly are connected to the first water inlet channel and the second water inlet channel respectively;

[0013] A water outlet channel is provided at the lower portion of the tank body and is communicated with the reaction chamber.

[0014] Furthermore, the tank body includes a tank bottom plate, the first water inlet channel is located below the tank bottom plate, the first water inlet channel extends along the moving direction of the workpiece, and the first water inlet channel is connected to the lower end of the water outlet pipe of the first liquid spraying assembly;

[0015] The second water inlet channel is located below the tank bottom plate, the second water inlet channel is spaced apart from and arranged in parallel with the first water inlet channel, and the second water inlet channel is connected to the lower end of the water outlet pipe of the second liquid spraying assembly;

[0016] The water outlet channel is located between the first water inlet channel and the second water inlet channel.

[0017] Furthermore, a first water inlet hole is provided on the bottom plate of the tank, and the lower end of the outlet pipe of the first liquid spraying assembly is embedded in the first water inlet hole;

[0018] A second water inlet hole is provided on the bottom plate of the tank, and the lower end of the outlet pipe of the second liquid spraying assembly is embedded in the second water inlet hole;

[0019] A water outlet through hole is provided on the bottom plate of the tank, and the water outlet through hole communicates with the water outlet channel and the reaction chamber.

[0020] Furthermore, a first connecting channel is connected below the first water inlet channel, and one end of the first connecting channel is connected to a first water inlet flange;

[0021] A second connecting channel is connected below the second water inlet channel, and one end of the second connecting channel is connected to a second water inlet flange;

[0022] A water outlet connecting channel is connected below the water outlet channel, and one end of the water outlet connecting channel is connected to a water outlet flange;

[0023] Wherein, the first water inlet channel, the second water inlet channel, and the water outlet channel are arranged side by side;

[0024] The first water inlet flange, the second water inlet flange, and the water outlet flange are located outside the tank body.

[0025] Furthermore, the trough body further comprises: a front side plate, the front side plate being located on one side of the trough body along the workpiece conveying direction;

[0026] A first clamping groove is formed on the front side plate, and the first clamping groove extends in the up-down direction. One end of the baffle is clamped in the first clamping groove.

[0027] Furthermore, a plurality of the first liquid spraying assemblies are provided along the conveying direction of the workpiece, and baffles of adjacent first liquid spraying assemblies are provided with bevels for matching and splicing.

[0028] Furthermore, one end of the baffle of the first liquid spraying assembly away from the front side plate is connected to a fixing plate, and the fixing plate is extended along the conveying direction of the workpiece;

[0029] The trough body further comprises a rear side plate, a second clamping groove is formed on the rear side plate, and an end of the fixing plate away from the front side plate is clamped in the second clamping groove.

[0030] Furthermore, a gap is provided between the water outlet pipe and the baffle, a plurality of liquid spray holes are provided on the water outlet pipe, and liquid outlet holes corresponding to the positions of the liquid spray holes are provided on the baffle, and the aperture of the liquid spray holes is smaller than the aperture of the liquid outlet holes;

[0031] The baffle is provided with a through hole, and the through hole is located below the liquid outlet.

[0032] Furthermore, an air pipe is provided on a side of the baffle of the first liquid spraying assembly facing away from the reaction chamber, and air holes are opened on the air pipe.

[0033] Based on the same concept, the present invention also proposes a production line for desmearing, copper deposition, electroplating and chemical nickel-gold deposition, which includes the reaction tank as described above.

[0034] Beneficial effects of this solution: The present invention proposes a reaction tank and a production line for desmearing, copper deposition, electroplating, and chemical nickel-gold deposition, wherein when the first spray assembly and the second spray assembly are installed in the tank body, since the outlet pipe is fixed to the baffle, only the baffle needs to be installed and fixed, and when disassembling, only the baffle needs to be disassembled, which improves the efficiency of assembly and disassembly and is beneficial to the assembly and maintenance of the equipment. By arranging a first water inlet channel and a second water inlet channel in the tank body, water is supplied to the outlet pipe of the first spray assembly on one side of the workpiece through the first water inlet channel, and water is supplied to the second spray assembly on the other side of the workpiece through the second water inlet channel, so that the outlet pipes on both sides are independently supplied with water, so that the spray flow rate can be sufficient and the spraying through the outlet pipe is more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 Schematic diagram of the structure of a reaction tank according to an embodiment of the present invention;

[0036] Figure 2 A cross-sectional view of an embodiment of a reaction tank of the present invention;

[0037] Figure 3 for Figure 2 A magnified view of part A;

[0038] Figure 4 A cross-sectional view of another position of an embodiment of a reaction tank of the present invention;

[0039] Figure 5 A cross-sectional view of a third position of an embodiment of a reaction tank of the present invention;

[0040] Figure 6 A schematic structural diagram of another perspective of an embodiment of a reaction tank of the present invention;

[0041] Figure 7 This is a front view of a first liquid spraying assembly of a reaction tank of the present invention;

[0042] Figure 8 This is a schematic structural diagram of a first liquid spraying assembly of a reaction tank of the present invention;

[0043] Figure 9 is a cross-sectional view of a first liquid spraying assembly of a reaction tank of the present invention;

[0044] Figure 10 A cross-sectional view of a fourth position of an embodiment of a reaction tank of the present invention;

[0045] Figure 11 for Figure 10 Enlarged view of part B.

[0046] Reference numerals in the figure: 300, reaction tank; 310, first liquid spray assembly; 311, second liquid spray assembly; 320, baffle; 321, liquid outlet; 322, through-hole; 323, guide plate; 324, chamfer; 325, first fixing plate; 326, supporting rib; 327, bevel; 330, water outlet pipe; 331, liquid spray hole; 332, sealing groove; 340, gap; 350, tank body; 351, first water inlet channel; 352, second water inlet channel; 353, water outlet channel; 354, tank bottom plate; 355, front side plate; 356. Rear side plate; 357. Limiting platform; 358. First clamping groove; 360. Reaction chamber; 361. Water outlet through hole; 370. First connecting channel; 371. First water inlet flange; 372. Second connecting channel; 373. Second water inlet flange; 374. Water outlet connecting channel; 375. Water outlet flange; 380. Fixing plate; 381. Overflow groove; 382. Pressing plate; 383. Pressing platform; 390. Air pipe; 391. First air pipe; 392. Second air pipe; 393. Upper hole; 394. Stop sleeve. DETAILED DESCRIPTION

[0047] The present invention provides a reaction tank and a production line for desmearing, copper deposition, electroplating, and electroless nickel-gold deposition. To make the objectives, technical solutions, and effects of the present invention more clear and explicit, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0048] like Figure 1 As shown, the present invention provides a reaction tank 300, in which a workpiece enters and exits the reaction tank 300 from top to bottom and is immersed in a solution for reaction, and the workpiece moves in the reaction tank 300, and the moving direction is the conveying direction of the workpiece. For the convenience of structural description, the conveying direction in this embodiment is the front-back direction. Figure 2 、 Figure 3 As shown, the reaction tank 300 in this embodiment specifically includes: a tank body 350, a first liquid spraying assembly 310 and a second liquid spraying assembly 311, a first water inlet channel 351, a second water inlet channel 352, and a water outlet channel 353. Figure 2 、 Figure 4 As shown, the tank body 350 includes a tank bottom plate 354 and side plates surrounding the tank bottom plate 354. The front side plate 355 is located in the front, the rear side plate 356 is located in the rear, and the left and right side plates are located on the other two sides. The first spray assembly 310 and the second spray assembly 311 are symmetrically arranged in the tank body 350. Specifically, as shown in FIG. Figure 2 、 Figure 3 As shown, the first and second liquid spray assemblies 310 and 311 are arranged in mirror images with the workpiece's direction of movement as the axis. Thus, the first and second liquid spray assemblies 310 and 311 have identical structures. For ease of structural description, the following explanation will focus on the specific structure of the first liquid spray assembly 310. A reaction chamber 360 is formed between the first and second liquid spray assemblies 310 and 311. A solution of chemical is placed in the reaction chamber 360, and the workpiece is transported and reacted within the reaction chamber 360. Both the first and second liquid spray assemblies 310 and 311 include a baffle 320 and an outlet pipe 330 located on the side of the baffle 320 facing away from the reaction chamber 360. The outlet pipe 330 is fixed to the baffle 320 and is used to spray the solution of chemical toward the workpiece within the reaction chamber 360, ensuring sufficient reaction. The first water inlet channel 351 and the second water inlet channel 352 are disposed on the tank body 350. The outlet pipes 330 of the first and second liquid spraying assemblies 310 and 311 respectively communicate with the first and second water inlet channels 351 and 352. The outlet channel 353 is disposed at the bottom of the tank body 350 and communicates with the reaction chamber 360. The aqueous solution in the reaction chamber 360 is drawn out through the outlet channel 353, allowing for recycling.

[0049] According to this solution, when the first and second liquid spraying assemblies 310 and 311 are installed in the tank body 350, since the outlet pipe 330 is fixed to the baffle 320, only the baffle 320 needs to be installed and fixed. When disassembling, only the baffle 320 needs to be disassembled. This improves the efficiency of assembly and disassembly and facilitates the assembly and maintenance of the equipment. By providing a first water inlet channel 351 and a second water inlet channel 352 in the tank body 350, the first water inlet channel 351 supplies water to the outlet pipe 330 of the first liquid spraying assembly 310 on one side of the workpiece, and the second water inlet channel 352 supplies water to the second liquid spraying assembly 311 on the other side of the workpiece, so that the outlet pipes 330 on both sides are independently supplied with water, thereby ensuring sufficient spray flow and more stable spraying through the outlet pipe 330.

[0050] like Figure 3 、 Figure 4 、 Figure 5 As shown, in the specific structure of this embodiment, a plurality of plates are provided at the lower part of the trough bottom plate 354, and the space below the trough bottom plate 354 is divided into a plurality of independent intervals by the plurality of plates, thereby forming a first water inlet channel 351, a second water inlet channel 352, and a water outlet channel 353.

[0051] The first water inlet channel 351 is located below the trough bottom plate 354 and extends along the direction of workpiece movement. The first water inlet channel 351 is connected to the lower end of the outlet pipe 330 of the first liquid spraying assembly 310. The second water inlet channel 352 is located below the trough bottom plate 354 and is spaced apart from and parallel to the first water inlet channel 351. The second water inlet channel 352 is connected to the lower end of the outlet pipe 330 of the second liquid spraying assembly 311. The outlet channel 353 is located between the first water inlet channel 351 and the second water inlet channel 352. This separation of the first and second water inlet channels 351 and 352 ensures that the flow rate of the liquid medicine sprayed from the outlet pipe 330 is consistent and stable, and that a sufficient amount of liquid medicine is sprayed from the outlet pipe 330.

[0052] like Figure 4 、 Figure 5As shown, a first connecting channel 370 is connected below the first water inlet channel 351. A through-hole 322 is provided on the lower surface of the first water inlet channel 351 to connect to the first connecting channel 370. A first water inlet flange 371 is connected to one end of the first connecting channel 370, facilitating connection with an external medicine inlet pipe. A second connecting channel 372 is connected below the second water inlet channel 352, with a second water inlet flange 373 connected to one end. A water outlet connecting channel 374 is connected below the water outlet channel 353, with an outlet flange 375 connected to one end. The first water inlet channel 351, second water inlet channel 352, and water outlet channel 353 are arranged side by side, with the connection points all facing one side, facilitating pipe connection. The first water inlet flange 371 , the second water inlet flange 373 , and the water outlet flange 375 are located outside the tank body 350 . There is enough installation space outside the tank body 350 , which facilitates the disassembly of the pipeline.

[0053] The trough bottom plate 354 is provided with a first water inlet hole (not shown), into which the lower end of the outlet pipe 330 of the first liquid spray assembly 310 is inserted. A second water inlet hole (not shown) is provided on the trough bottom plate 354, into which the lower end of the outlet pipe 330 of the second liquid spray assembly 311 is inserted. When installing the outlet pipe 330, simply insert it into either the first or second water inlet hole. This allows the outlet pipe 330 to dock with the first and second water inlet holes, respectively, securing the connection and facilitating installation.

[0054] like Figure 3 As shown, the tank bottom plate 354 is provided with a water outlet hole 361, which connects the water outlet channel 353 and the reaction chamber 360. Specifically, a stopper 357 is integrally formed on the tank bottom plate 354. The stopper 357 is located within the reaction chamber 360, and the water outlet hole 361 is provided on its upper surface. The left and right sides of the stopper 357 respectively abut against the baffle 320 of the first and second liquid spray assemblies 310 and 311. During installation, the baffle 320 abuts against the side of the stopper 357, allowing the water outlet pipe 330 to dock smoothly, facilitating installation and removal.

[0055] like Figure 6As shown, the front side plate 355 is located on one side (the front side) of the trough body 350 along the workpiece conveying direction. A first engaging groove 358 is defined on the front side plate 355. The first engaging groove 358 extends in the vertical direction, and one end of the baffle 320 is engaged with the first engaging groove 358. By providing the first engaging groove 358 on the front side plate 355, the baffle 320 can be directly inserted into the first engaging groove 358, thus achieving installation without the need for complex fixing methods and facilitating installation and removal. Correspondingly, a second engaging groove is defined on the rear side plate 356. In one embodiment, the other end of the baffle 320 can be engaged with the second engaging groove, providing a more secure fixation of the baffle 320.

[0056] In this embodiment, multiple first liquid spray assemblies 310 are provided along the workpiece conveying direction. The baffles 320 of adjacent first liquid spray assemblies 310 are provided with beveled notches 327 for mating and splicing. The beveled notches 327 on the baffles 320 prevent misalignment and facilitate splicing. The multiple first liquid spray assemblies 310 and the corresponding multiple second liquid spray assemblies 311 effectively extend the workpiece's travel distance within the reaction tank 300. Modular splicing can be implemented according to actual needs, providing a wide range of applications and easy adjustment. The baffles 320 of the first liquid spray assembly 310, distal from the front side plate 355, are connected to a fixed plate 380, extending along the workpiece conveying direction. The fixed plate 380 effectively extends the workpiece's travel distance within the reaction tank 300. The addition of the fixed plate 380 allows the workpiece to be moved during steps where liquid spraying is not required, maintaining the reaction conditions after the initial liquid spraying. Furthermore, the side of the fixed plate 380 facing away from the reaction chamber 360 does not require the water outlet pipe 330. This leaves room for various reinforcement panels, such as multiple snap-in slots on the left and right side panels, which can be snapped into place through the fixed plate 380, thus providing a more stable structure. A second snap-in slot is defined on the rear side panel 356, into which the end of the fixed plate 380 facing away from the front side panel 355 is snapped.

[0057] like Figure 6 As shown, an overflow groove 381 is provided at the upper end of the fixed plate 380. When the liquid level in the reaction chamber 360 reaches the position of the upper overflow groove 381, the liquid flows out of the overflow groove 381 and flows into the tank body 350. This prevents the solution from exceeding the capacity of the reaction chamber 360 and overflowing.

[0058] like Figure 7 、 Figure 9As shown, a gap 340 is provided between the outlet pipe 330 and the baffle 320. The outlet pipe 330 is provided with multiple spray holes 331. The baffle 320 is provided with outlet holes 321 corresponding to the positions of the spray holes 331. The diameter of the spray holes 331 is smaller than that of the outlet holes 321. Therefore, when the solution enters the gap 340, the small diameter of the spray holes 331 causes a rapid flow rate in the spray holes 331, while the flow rate from the outlet holes 321 is slow. The solution in the gap 340 is ejected from the outlet holes 321, creating a siphon effect. This increases the flow rate from the outlet holes 321 to 1.3-2 times that of the flow rate directly from the outlet holes 321, thereby enhancing the spraying effect. The baffle 320 is provided with a through hole 322, which is located below the outlet holes 321. In this way, the solution in the reaction tank 300 located on the side of the baffle 320 facing the workpiece can flow into the side of the block located on the outlet pipe 330 through the through hole 322, thereby filling the gap 340 with the solution of the solution that soaks the workpiece, and siphoning as a quick replenishment of the solution.

[0059] The through hole 322 has a larger diameter than the liquid outlet hole 321. The through hole 322 allows the aqueous solution to flow quickly, filling the gap 340 between the outlet pipe 330 and the baffle 320 more promptly. This ensures a more stable flow rate from the liquid outlet hole 321. The diameter of the liquid outlet hole 331 in this embodiment is 1-3 mm, specifically 2 mm in this embodiment, while the diameter of the liquid outlet hole 321 is 4-6 mm, specifically 5 mm in this embodiment. This creates a size difference between the diameters of the liquid outlet hole 321 and the liquid outlet hole 331, which is achieved through a siphon effect. The gap 340 between the outlet pipe 330 and the baffle 320 is 2-4 mm, specifically 3 mm in this embodiment, ensuring a stable flow rate from the liquid outlet hole 321.

[0060] like Figure 8 、 Figure 9 As shown, to facilitate the entry of the workpiece into the tank body 350, a guide plate 323 is provided on the baffle 320. The guide plate 323 is located at the upper end of the baffle 320 and is tilted downward in the direction from the outlet pipe 330 to the baffle 320. In this way, the guide plate 323 guides the workpiece as it enters the reaction tank 300. When the workpiece is not in the reaction position facing the right side plate, the lower end of the workpiece contacts the guide plate 323. As the workpiece descends, it slides along the guide plate 323 toward the right side plate, thus guiding the workpiece and ensuring smooth entry into the reaction tank 300.

[0061] like Figure 9As shown, a chamfer 324 is provided on the side of the baffle 320 facing away from the guide plate 323. The lower end needs to be assembled with the reaction tank 300. By providing the chamfer 324, the chamfer 324 can straighten the position of the baffle 320 and facilitate assembly.

[0062] In this embodiment, multiple outlet pipes 330 are provided. These are arranged side by side along the workpiece conveying direction, i.e., they are evenly spaced apart in the front-to-back direction. Multiple spray holes 331 are arranged side by side along the workpiece's inlet and outlet directions, i.e., they are arranged in the vertical direction. This ensures that the solution is sprayed evenly onto the workpiece surface. In this embodiment, the central axis of the spray hole 331 is perpendicular to the side of the side plate facing the workpiece, and the central axis of the outlet hole 321 is parallel or coaxial with the central axis of the spray hole 331. This ensures that the solution is sprayed evenly onto the workpiece, further facilitating the workpiece processing in this process.

[0063] The baffle 320 is provided with a first fixing plate 325, located on the side of the baffle 320 facing away from the workpiece. The multiple water outlet pipes 330 are fixedly mounted on the first fixing plate 325. Specifically, the upper ends of the water outlet pipes 330 are sealed and fixedly mounted on the lower surface of the first fixing plate 325. The first fixing plate 325 extends along the conveying direction of the workpiece, i.e., it is arranged in an elongated strip shape in the front-to-back direction. This forms a fixed connection between the baffle 320 and the multiple water outlet pipes 330, allowing the baffle 320 and the water outlet pipes 330 to be assembled and disassembled as a single unit.

[0064] The baffle 320 is provided with a support rib 326 located on the side of the baffle 320 facing away from the workpiece. The outlet pipe 330 is disposed through the support rib 326. Multiple support ribs 326 may be provided, arranged side by side and spaced apart in the vertical direction. The support ribs 326 support the outlet pipe 330, ensuring a more stable structure of the baffle 320 and the outlet pipe 330 as a whole. Furthermore, the support provided by the support ribs 326 ensures that the gap 340 between the outlet pipe 330 and the baffle 320 remains constant.

[0065] When in use, the water in the water outlet channel 353 is transported to the water outlet pipe 330 by inserting the water outlet pipe 330 into the water outlet channel 353 .

[0066] like Figure 10As shown, during the reaction process, it is necessary to input gas, such as oxygen, into the aqueous solution. Therefore, an air pipe 390 is provided on the side of the baffle 320 of the first spray assembly 310 facing away from the reaction chamber 360. The air pipe 390 is provided with air holes (not marked in the figure) for ventilation toward the tank body 350 through the air holes. Since the side of the baffle 320 facing away from the reaction chamber 360 is connected to the reaction chamber 360, gas can also enter the reaction chamber 360 along with the aqueous solution.

[0067] like Figure 10 、 Figure 11 As shown, the air pipe 390 includes a first air pipe 391 arranged in the vertical direction, and a second air pipe 392 connected to the first air pipe 391 and arranged in the front-to-back direction. The second air pipe 392 is located at the bottom of the tank body 350 and has multiple air holes evenly distributed in the front-to-back direction. This allows the solution to mix evenly with oxygen. The first air pipe 391 has an upper hole 393, which is located above the first fixing plate 325 and extends beyond the reaction chamber 360. During ventilation, gas can overflow from the upper hole 393, allowing visual inspection of ventilation and convenient detection of ventilation. In addition, a baffle 394 is provided on the outer edge of the upper hole 393, with the opening of the baffle 394 facing downward. This guides the overflowing gas downward, avoiding direct impact on the observer.

[0068] like Figure 6 As shown, in addition, in the present reaction tank 300, two sets of first liquid spray assemblies 310 and two corresponding sets of second liquid spray assemblies 311 are arranged in the left and right directions, thereby forming two reaction chambers 360. Thus, two first water inlet channels 351, two second water inlet channels 352, and two water outlet channels 353 are each provided. The first water inlet channel 351 and the second water inlet channel 352 located adjacent to each other in the middle can be provided separately or combined into a single channel, i.e., a combined channel. However, the volume of the combined channel after the combination is twice that of the first channels provided separately. Furthermore, two water inlet channels are connected to the combined channel, and each water inlet channel has the same cross-sectional area as the first water inlet channel 351 or the second water inlet channel 352 provided separately.

[0069] like Figure 10 、 Figure 11As shown, a pressure plate 382 is disposed between the adjacent first and second liquid spray assemblies 310, 311. The ends of the pressure plate 382 are fixedly connected to the front side plate 355 and the rear side plate 356 via screws, respectively. The lower surface of the pressure plate 382 abuts against the upper edge of the guide plate, limiting the upward movement of the baffle. A pressure platform 383 is disposed on the pressure plate 382. The left and right sides of the pressure platform 383 abut against the edges of the guide plate, limiting the position of the guide plate. This restraint of the first and second liquid spray assemblies 310, 311, adjacent to each other, by the pressure platform 383 provides a more stable structural fixation.

[0070] A filter is connected to the outlet flange 375 via a pipe, and the filter is connected to a pump via a pipe. The pump draws the solution from the reaction chamber 360 and filters it. The filtered solution is then fed to a heater or cooler for heating or cooling according to process requirements. The heated or cooled solution then enters the reaction tank 300 through the first and second water inlet channels 351 and 352 for recycling.

[0071] Based on the same concept, the present invention also proposes a production line for desmearing, copper deposition, electroplating and chemical nickel-gold deposition, which includes the reaction tank 300 described above. This production line can implement desmearing, copper deposition, electroplating and chemical nickel-gold deposition processes on products.

[0072] In summary, the present invention proposes a reaction tank and a production line for desmearing, copper deposition, electroplating, and chemical nickel-gold deposition, wherein when the first spray assembly and the second spray assembly are installed in the tank body, since the outlet pipe is fixed on the baffle, only the baffle needs to be installed and fixed, and when disassembling, only the baffle needs to be disassembled, which improves the efficiency of assembly and disassembly and is beneficial to the assembly and maintenance of the equipment. By arranging a first water inlet channel and a second water inlet channel in the tank body, water is supplied to the outlet pipe of the first spray assembly located on one side of the workpiece through the first water inlet channel, and water is supplied to the second spray assembly located on the other side of the workpiece through the second water inlet channel, so that the outlet pipes on both sides are independently supplied with water, so that the spray flow rate can be sufficient and the spraying through the outlet pipe is more stable.

[0073] It should be understood that the application of the present invention is not limited to the above examples. For those skilled in the art, improvements or changes can be made based on the above description. All these improvements and changes should fall within the scope of protection of the claims attached to the present invention.

Claims

1. A reaction tank, characterized in that: include: trough body; a first liquid spray assembly and a second liquid spray assembly, the first liquid spray assembly and the second liquid spray assembly being symmetrically arranged in the tank body, the first liquid spray assembly and the second liquid spray assembly being spaced apart to form a reaction chamber, the first liquid spray assembly and the second liquid spray assembly both comprising a baffle and a water outlet pipe located on a side of the baffle facing away from the reaction chamber, the water outlet pipe being fixedly arranged on the baffle; a first water inlet channel, wherein the first water inlet channel is provided on the tank body; a second water inlet channel, the second water inlet channel being arranged on the tank body; Wherein, the outlet pipes of the first liquid spray assembly and the second liquid spray assembly are connected to the first water inlet channel and the second water inlet channel respectively; a water outlet channel, the water outlet channel being arranged at the lower portion of the tank body and being in communication with the reaction chamber; A gap is provided between the water outlet pipe and the baffle, a plurality of liquid spray holes are provided on the water outlet pipe, and a liquid outlet hole corresponding to the position of the liquid spray holes is provided on the baffle, and the aperture of the liquid spray hole is smaller than the aperture of the liquid outlet hole; The baffle is provided with a through hole, and the through hole is located below the liquid outlet; The aqueous solution in the reaction tank located on the side of the baffle facing the workpiece flows into the side of the baffle located on the outlet pipe through the through hole, thereby filling the gap, so that the aqueous solution in the gap forms a siphon effect and is sprayed out from the outlet hole.

2. The reaction tank according to claim 1, characterized in that The tank body includes a tank bottom plate, the first water inlet channel is located below the tank bottom plate, the first water inlet channel extends along the moving direction of the workpiece, and the first water inlet channel is connected to the lower end of the water outlet pipe of the first liquid spraying assembly; The second water inlet channel is located below the tank bottom plate, the second water inlet channel is spaced apart from and arranged in parallel with the first water inlet channel, and the second water inlet channel is connected to the lower end of the water outlet pipe of the second liquid spraying assembly; The water outlet channel is located between the first water inlet channel and the second water inlet channel.

3. The reaction tank according to claim 2, characterized in that A first water inlet through hole is provided on the bottom plate of the tank, and the lower end of the outlet pipe of the first liquid spraying assembly is embedded in the first water inlet through hole; A second water inlet hole is provided on the bottom plate of the tank, and the lower end of the outlet pipe of the second liquid spraying assembly is embedded in the second water inlet hole; A water outlet through hole is provided on the bottom plate of the tank, and the water outlet through hole communicates with the water outlet channel and the reaction chamber.

4. The reaction tank according to claim 3, characterized in that A first connecting channel is connected below the first water inlet channel, and one end of the first connecting channel is connected to a first water inlet flange; A second connecting channel is connected below the second water inlet channel, and one end of the second connecting channel is connected to a second water inlet flange; A water outlet connecting channel is connected below the water outlet channel, and one end of the water outlet connecting channel is connected to a water outlet flange; Wherein, the first water inlet channel, the second water inlet channel, and the water outlet channel are arranged side by side; The first water inlet flange, the second water inlet flange, and the water outlet flange are located outside the tank body.

5. The reaction tank according to claim 1, characterized in that The trough body further comprises: a front side plate, the front side plate being located on one side of the trough body along the workpiece conveying direction; A first clamping groove is formed on the front side plate, and the first clamping groove extends in the up-down direction. One end of the baffle is clamped in the first clamping groove.

6. The reaction tank according to claim 5, characterized in that A plurality of the first liquid spraying assemblies are arranged along the conveying direction of the workpiece, and baffles of adjacent first liquid spraying assemblies are provided with bevels for matching and splicing.

7. The reaction tank according to claim 6, characterized in that One end of the baffle of the first liquid spraying assembly away from the front side plate is connected to a fixing plate, and the fixing plate is extended along the conveying direction of the workpiece; The trough body further comprises a rear side plate, a second clamping groove is formed on the rear side plate, and an end of the fixing plate away from the front side plate is clamped in the second clamping groove.

8. The reaction tank according to claim 1, characterized in that An air pipe is provided on the side of the baffle of the first liquid spraying assembly facing away from the reaction chamber, and air holes are opened on the air pipe.

9. A production line for desmearing, copper deposition, electroplating and chemical nickel-gold deposition, characterized in that: It comprises the reaction tank as described in any one of claims 1-8.

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