Electroplating processing equipment for multi-row high-density integrated circuit lead frame

Abstract

The present application relates to lead frame electroplating equipment technical field, especially to multi-row high-density integrated circuit lead frame electroplating processing equipment, including steel bar conveying mechanism for forward conveying lead frame, sequentially arranged with electroplating mechanism, flushing mechanism and blowing mechanism for electroplating lead frame along the way; after entering the electroplating mechanism after feeding, the electrolyte needing backflow connects backflow pipe, the generated liquid impact force is smaller, so the generated foam is smaller, the defoamed electrolyte is discharged outward through the drain pipe, which can reduce the subsequent adverse reaction; when flushing, the support net belt supports the back of the lead frame, which can prevent the lead frame from being deformed inwardly due to the huge liquid impact, realize clean flushing, protect the lead frame and reduce the damage probability; the lead frame needing impurity removal and water stain removal enters the blowing tank, advances through the movement channel, and the blowing piece blows the front and back surfaces of the passing lead frame to remove stains; then, the lead frame is discharged and collected.

Description

Technical Field

[0001] This invention relates to the field of lead frame electroplating equipment technology, and more particularly to electroplating equipment for multi-row high-density integrated circuit lead frames. Background Technology

[0002] An integrated circuit (IC) is a miniature electronic device or component. ICs also include chips and circuit boards. Currently, to achieve interconnection between chips and circuit boards, the leads within the leadframe must bond to gold wires. This bonding is achieved through electroplating. Furthermore, when mounting electronic chips, gold wires must be soldered to the base of the leadframe pins. To ensure a strong solder joint, the soldered area is silver-plated to guarantee a stable and secure connection. Therefore, localized electroplating of the leadframe is necessary. Currently, this is achieved by covering the leadframe with a leather strap or silicone mask to shield the areas not to be electroplated.

[0003] In response, Chinese invention patent CN202210206975.4 discloses an electroplating device for integrated circuit lead frames. The mask assembly is located on one side of the inner end of the electroplating assembly, and the top material assembly is symmetrically located on both sides of one end of the electroplating assembly. The electroplating assembly includes a solid-liquid tank, a liquid circulation conveyor, a transverse inclined chute, a limiting outer frame, a sealing inner plate, an adjusting slide rod, an anti-liquid accumulation layer, a liquid flow hole, a liquid penetration hole, and an internal slide. By designing this invention, not only is it convenient to reciprocate transport of the lead frame, but it is also beneficial to directly perform local electroplating on the lead frame without having to put a belt or silicone mask on the outside of the lead frame, which brings convenience to the local electroplating of the lead frame.

[0004] The above solution allows for the unloading of the lead frame after electroplating and transportation to a certain location, thereby accelerating the processing and production of the lead frame. Existing electroplating equipment leaves a large amount of impurities on the surface of the lead frame during electroplating, which affects the electroplating quality and yield. Summary of the Invention

[0005] The purpose of this invention is to provide an electroplating processing equipment for multi-row high-density integrated circuit lead frames, addressing the shortcomings of existing technologies.

[0006] To achieve the above objectives, the technical solution of the present invention is as follows:

[0007] Electroplating equipment for multi-row high-density integrated circuit lead frames includes a steel strip conveying mechanism for forward conveying of the lead frames, and an electroplating mechanism, a rinsing mechanism, and a blower mechanism for electroplating the lead frames are arranged sequentially along the steel strip conveying mechanism.

[0008] The flushing mechanism includes a conveying assembly that supports and conveys the lead frame and a flushing assembly that is spaced apart from the conveying assembly. The conveying assembly includes multiple rotatable water-blocking rollers and a support mesh belt nested between the multiple water-blocking rollers that supports and conveys the lead frame. The flushing assembly includes multiple high-pressure nozzles that spray flushing liquid toward the support mesh belt.

[0009] The blower mechanism includes a blower channel with a movement channel for the lead frame to move forward. Multiple blowers are arranged along the movement channel to blow air and remove impurities from the front and back surfaces of the lead frame. Each blower includes a bottom support seat on both sides of the lead frame in the forward direction and an eccentric support seat rotatably mounted on the bottom support seat. A rotatable blower column is eccentrically mounted on the eccentric support seat, and the blower column has a blower knife groove formed along its length.

[0010] The electroplating mechanism is connected to a defoaming mechanism for eliminating foam. The defoaming mechanism includes a recovery tank for storing electrolyte, the recovery tank forming a reflux chamber and a drain chamber. A defoaming chamber for foam to float is provided between the bottom of the drain chamber and the reflux chamber. The recovery tank is equipped with multiple reflux pipes that lead to the reflux chamber. The bottom of the reflux pipes is connected to multiple diversion pipes with a diameter smaller than that of the reflux pipes. The drain chamber is equipped with multiple drain pipes that discharge the electrolyte.

[0011] The beneficial effects of this invention are as follows: The electrolyte that needs to be returned is connected to the return pipe, and the bottom of the return pipe is divided into multiple diversion pipes to flow into the return chamber. The diversion pipes come into contact with the liquid in the return chamber. Due to the small aperture, the liquid impact force generated is small, so the foam generated is small. The generated foam will rise to the liquid surface. After passing through the defoaming chamber, the electrolyte flows into the drain chamber. The defoamed electrolyte is discharged outward through the drain pipe, which can reduce subsequent adverse reactions.

[0012] The lead frame that needs to be rinsed is conveyed forward along the conveying assembly. As it moves forward, the support mesh belt nested in multiple baffle rollers moves. Multiple high-pressure nozzles of the rinsing assembly spray high-pressure liquid onto the passing lead frame to rinse away residual impurities. During rinsing, the support mesh belt supports the back of the lead frame to prevent it from being deformed due to the huge liquid impact. This achieves both cleaning and protection of the lead frame, reducing the probability of damage.

[0013] After the lead frame, which requires impurity and water stain removal, enters the air blowing channel, it moves forward through the movement channel. The air blowing component blows air onto the front and back surfaces of the lead frame to remove impurities. By rotating the air blowing column and the eccentric support base, the angle between the air blown out by the air knife groove of the air blowing column and the lead frame changes. In addition, as needed, the eccentric support base and the bottom support base can rotate to allow the air blowing column installed on the eccentric support base to swing, moving away from or closer to the lead frame. The distance between the two air blowing columns changes, and the air pressure can be adjusted accordingly, effectively protecting the lead frame from damage while removing impurities and water stains. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the electroplating equipment for circuit lead frames.

[0015] Figure 2 This is a schematic diagram of the electroplating feeding mechanism.

[0016] Figure 3 This is a schematic diagram of the steel bar conveying mechanism.

[0017] Figure 4 This is a schematic diagram of the defoaming mechanism.

[0018] Figure 5 This is a schematic diagram of the cross-section of the recycling tank.

[0019] Figure 6 for Figure 5 The enlarged schematic diagram shows the connection structure between the reflux pipe and the reflux cavity.

[0020] Figure 7 This is a schematic diagram of the reflux foam elimination device from another perspective, showing one of the tank walls hidden.

[0021] Figure 8 for Figure 7 The enlarged schematic diagram shows a portion of the structure, including the heating component.

[0022] Figure 9 This is a schematic diagram of the rinsing mechanism.

[0023] Figure 10 This is a schematic diagram of the rinsing mechanism from another perspective, concealing the adjusting roller and one of the water-blocking rollers.

[0024] Figure 11 This is a schematic diagram of the blower mechanism.

[0025] Figure 12 This is a schematic diagram of the blower component.

[0026] Figure 13 This is a schematic diagram of the electroplating feeding mechanism.

[0027] Figure 14 A partially enlarged structural diagram of the guide feeding and conveying assembly.

[0028] The reference numerals in the figures include:

[0029] 1-Electroplating feeding mechanism,

[0030] 11-Booth feeding mechanism

[0031] 111-Railway conveyor mechanism, 112-Tilting clamping mechanism, 113-Feeding bin, 114-Guide conveyor plate, 115-Guide feeding conveyor component, 116-Clamping fixture,

[0032] 12-Steel bar conveying mechanism

[0033] 120 - Steel belt, 121 - Conveyor mounting plate

[0034] 122-Conveyor wheel, 123-Wheel mounting shaft, 124-Wheel drive seat, 125-First wheel fixing plate

[0035] 126-Second wheel fixing plate, 127-Ratchet, 128-Pressure feeding wheel, 129-Tension spring,

[0036] 2-Electroplating mechanism,

[0037] 20 - Defoaming mechanism, 201 - Electroplating tank,

[0038] 21-Recycling tank

[0039] 211-Reflux chamber, 212-Defoaming chamber, 213-Drainage chamber, 214-First partition, 215-Second partition, 216-Defoaming partition, 217-Passage channel

[0040] 22-Heating components

[0041] 221 - Liquid leveling tube, 222 - Drainage tube, 223 - Heating tube, 224 - Heat exchanger tube, 225 - Upper fastening sleeve.

[0042] 226 - Lower fastening sleeve, 227 - Top connecting strip, 228 - Bottom connecting strip

[0043] 23-pipe mounting plate,

[0044] 231-Return pipe, 232-Pipe mounting hole, 233-Pipe fitting, 234-Top connection cavity, 235-Diverter hole, 236-Diverter pipe,

[0045] 3- Flushing mechanism

[0046] 31- Flushing assembly,

[0047] 311-Flush seat, 312-Mounting hole, 313-High-pressure nozzle

[0048] 32-Conveyor Components

[0049] 321-Conveyor support plate, 322-Rotating shaft, 323-Water-blocking roller, 324-Support mesh belt, 325-Adjusting roller, 326-Adjusting plate, 327-Adjusting groove, 328-Drive shaft.

[0050] 4-Hair dryer mechanism

[0051] 41-Air blower slot,

[0052] 410 - Motion channel, 411 - Feed inlet, 412 - Discharge outlet

[0053] 42-Blower Part

[0054] 420 - Air blower column, 421 - Bottom mounting base, 422 - Bottom support base, 423 - First connecting hole

[0055] 424 - Eccentric support base, 425 - Bottom connecting sleeve, 426 - Second connecting hole, 427 - Air cavity,

[0056] 428-Top connecting sleeve, 429-Air knife groove,

[0057] 5-Electroplating feeding mechanism

[0058] 51-Tilting feeding mechanism

[0059] 511 - Material feeding track mechanism, 512 - Guided material feeding conveyor assembly, 513 - Material receiving mechanism,

[0060] 514 - Receiving box, 515 - Fitting groove, 516 - Top conveyor wheel, 517 - Bottom conveyor wheel. Detailed Implementation

[0061] The present invention will now be described in detail with reference to the accompanying drawings.

[0062] like Figure 1-14 As shown, the electroplating equipment for multi-row high-density integrated circuit lead frames includes a steel belt conveyor mechanism for forward conveying the lead frames, and an electroplating mechanism, a rinsing mechanism, and a blower mechanism are arranged sequentially along the steel belt conveyor mechanism to electroplat the lead frames.

[0063] Before the lead frame enters the electroplating mechanism, it is fed by the electroplating feeding mechanism 1. The electroplating feeding mechanism 1 includes a hopper feeding mechanism 11, a track conveying mechanism 111, a steel bar conveying mechanism 12, and a flipping clamping mechanism 112 that flips and clamps the lead frame of the track conveying mechanism 111 to the steel bar conveying mechanism 12 for forward conveying. The lead frame to be fed is inserted into the feeding hopper 113 on the top of the support plate for non-stop feeding. The lead frame pushed out from the feeding hopper 113 is pushed forward into the guide feeding conveyor 115 of the guide conveyor plate 114 under the rolling drive. After being rolled forward to the feeding position, the flipping clamping mechanism 112 works. The clamping fixture 116 is rotated under the drive of the rotating shaft to align with the vertical lead frame. The telescopic drive drives the clamping fixture 116 to approach the lead frame for clamping. Then the rotating shaft continues to rotate, so that the clamped lead frame changes from a horizontal posture to a vertical posture and is accurately clamped by the steel strip 120.

[0064] The steel bar conveying mechanism 12 also includes a conveying mounting plate 121 for guiding and conveying the steel strip 120. A pair of mounting plates of the flipping clamping mechanism 112 are fixedly installed at the bottom of the conveying mounting plate 121. A wheel mounting shaft 123 is fixedly arranged along the length direction of the conveying mounting plate 121. Wheel drive seats 124 are slidably installed at both ends of the wheel mounting shaft 123. The wheel drive seats 124 are slidably connected to the wheel mounting shaft 123 through mounting holes. A horizontally arranged telescopic cylinder is installed on the top of the conveying mounting plate 121. The telescopic cylinder is connected to one of the wheel drive seats 124. Under the drive of the telescopic cylinder, the distance between the two wheel drive seats 124 can be adjusted. The steel strip 120 forms a straight line between the two wheel drive seats 124, which facilitates the feeding of the lead frame.

[0065] The steel bar conveying mechanism 12 also includes a steel strip 120 that can clamp the lead wire frame and a conveying wheel 122 that drives the steel strip 120 forward. The conveying wheel 122 includes a first wheel fixing plate 125 and a second wheel fixing plate 126 mounted on the wheel drive seat 124. The first wheel fixing plate 125 is equipped with a ratchet 127 that meshes with the drive hole of the steel strip 120. The second wheel fixing plate 126 is equipped with a pressing wheel 128 that presses the steel strip 120 against the ratchet 127. The second wheel fixing plate 126 and the first wheel... A tension spring 129 is installed between the fixed plates 125. Under the elastic drive of the tension spring 129, the second fixed plate 126 approaches the first fixed plate 125, so that the pressure roller 128 installed on the second fixed plate 126 will press the steel belt 120 tightly against the ratchet 127, so that the ratchet 127 can keep the lead frame in contact and engage transmission. Under the transmission of the ratchet 127 and the pressure roller 128, the steel belt 120 advances along the length direction and passes through the electroplating mechanism, the rinsing mechanism and the blower mechanism in sequence.

[0066] The electroplating mechanism 2 includes an electroplating tank 201 arranged along the length direction. The electroplating tank 201 is filled with electrolyte and has a conductive mechanism that makes conductive contact with the lead frame. Surface electroplating is achieved through the lead frame in the electroplating tank 201.

[0067] The bottom of the electroplating tank 201 is connected to a defoaming mechanism 20 for eliminating foam. The defoaming mechanism 20 includes a recovery tank 21 for storing electrolyte. The recovery tank 21 forms a reflux chamber 211 and a drain chamber 213. A defoaming chamber 212 for foam to float is provided between the bottom of the drain chamber 213 and the reflux chamber 211. A first partition 214 and a second partition 215 are arranged in parallel and at intervals between the reflux chamber 211 and the drain chamber 213. There are passage channels 217 between the bottom of the first partition 214 and the bottom wall of the recovery tank 21 for the electrolyte to pass through. A defoaming partition 216 is installed between the first partition 214 and the second partition 215. The bottom of the defoaming partition 216 is installed on the bottom wall of the recovery tank 21. The height of the defoaming partition 216 is greater than the passage channels 217 between the first partition 214 and the second partition 215. The first partition 214, the second partition 215 and the defoaming partition 216 form the defoaming chamber 212.

[0068] In this embodiment, when liquid is introduced into the reflux chamber 211, foam is generated. After standing for a period of time, the electrolyte foam will rise to the surface. The electrolyte in the reflux chamber 211 flows into the defoaming chamber 212 between the first partition 214 and the second partition 215 through the passage 217 at the bottom of the first partition 214. In the defoaming chamber 212, the liquid between the defoaming partition 216 and the first partition 214 flows from the top of the defoaming partition 216 into the space between the defoaming partition 216 and the second partition 215. Then, it enters the drain chamber 213 through the passage 217 at the bottom of the second partition 215. The foam generated by the defoaming partition 216 rises to the surface of the liquid between the first partition 214 and the second partition 215. Since the passage 217 is located at the bottom, the foam will not flow into the drain chamber 213, which can further defoam the drained electrolyte.

[0069] The drain pipe 222 is installed at the bottom of the drain chamber 213. The foam generated by the electrolyte after passing through the defoaming chamber 212 is further reduced. The electrolyte is discharged through the drain pipe 222 installed at the bottom of the drain chamber 213, and the foam content of the discharged electrolyte is further reduced.

[0070] The drain chamber 213 is longitudinally equipped with a level tube 221 for detecting the liquid level. The level tube 221 is used to detect the liquid level in the drain chamber 213 to prevent the electrolyte from overflowing from the recovery tank 21 and causing waste.

[0071] A heating assembly 22 is also provided at the bottom of the drain chamber 213. The heating assembly 22 includes a heating tube 223 and a heat exchange tube 224. Both the heating tube 223 and the heat exchange tube 224 are corrugated. The heating tube 223 heats the electrolyte to be drained to the required temperature for subsequent recycling. The drain chamber 213 is provided with multiple upper fastening sleeves 225 nested on the top of the heat exchange tube 224 and multiple lower fastening sleeves 226 nested on the bottom of the heat exchange tube 224. A top connecting strip 227 is provided between two adjacent upper fastening sleeves 225, and a bottom connecting strip 228 is provided between two adjacent lower fastening sleeves 226. The heat exchange tube 224 is installed and positioned by the bottom connecting strip 228 and the top connecting strip 227, and the heat exchange tube 224 can be kept fixed.

[0072] The principle of heat exchanger tube 224: When the working fluid in the evaporation section of the heat pipe is heated, it boils or evaporates, absorbing heat from the external heat source and generating latent heat of vaporization, changing from liquid to vapor. The vapor, under a certain pressure difference within the tube, flows to the condensation section. The vapor encounters the cold wall surface and the external cold source, condensing into liquid and releasing its latent heat of vaporization. This condensate is then transferred to the external cold source through the tube wall. The condensate flows back to the evaporation section under gravity (or by a wick) to evaporate again. This process repeats, achieving heat transfer and exchange between the two media, one hot and one cold.

[0073] The recovery tank 21 is equipped with multiple return pipes 231 that lead to the return chamber 211. The return chamber 211 is provided with a pipe mounting plate 23 for installing the return pipes 231. The pipe mounting plate 23 has pipe mounting holes 232 for the return pipes 231 to pass through. The return pipes 231 are installed on the top of the return chamber 211 through the pipe mounting holes 232 for fixation. Electrolyte that needs to be defoamed can be introduced into the return chamber 211 of the recovery tank 21.

[0074] The bottom of the return pipe 231 is connected to multiple diversion pipes 236 with orifices smaller than those of the return pipe 231. A pipe connector 233 is sealed at the bottom of the return pipe 231. The top of the pipe connector 233 has a top connecting cavity 234 that is inserted into the return pipe 231. The bottom of the pipe connector 233 has multiple diversion holes 235 that communicate with the top connecting cavity 234. The diversion pipes 236 are inserted into the diversion holes 235. The outlet at the bottom of the diversion pipe 236 is below the liquid level.

[0075] In this embodiment, the electrolyte that needs to be returned is connected to the return pipe 231. The bottom of the return pipe 231 is diverted into the return cavity 211 through multiple diversion pipes 236. The diversion pipes 236 come into contact with the liquid in the return cavity 211. Due to the small aperture, the liquid impact force generated is small, so the foam generated is small, thus achieving the defoaming effect.

[0076] After passing through the electroplating mechanism 2, the product enters the rinsing mechanism 3 to rinse away the residual electrolyte and retained impurities. The rinsing mechanism 3 includes a conveying component 32 that supports and conveys the lead frame and a rinsing component 31 that is spaced apart from the conveying component 32. The rinsing component 31 includes a longitudinally arranged rinsing seat 311. The rinsing seat 311 has a cavity for liquid to enter. Multiple mounting holes 312 are provided on one side of the cavity. Multiple high-pressure nozzles 313 are horizontally installed on the mounting holes 312 of the rinsing seat 311.

[0077] The conveying assembly 32 includes multiple rotatable water-blocking rollers 323 and a support mesh belt 324 nested between the multiple water-blocking rollers 323 to support and convey the lead frame. The support mesh belt 324 is a mesh belt structure made of metal material, which allows liquid to pass through.

[0078] The conveying assembly 32 also includes a conveying support plate 321 for supporting the water-blocking rollers 323. The conveying support plate 321 is equipped with three longitudinally arranged rotating shafts 322. The water-blocking rollers 323 are longitudinally nested on the rotating shafts 322. The support mesh belt 324 forms a closed loop after sequentially winding around multiple water-blocking rollers 323. Rotation of the rotating shafts 322 drives the support mesh belt 324 to move, thus conveying the lead frame forward. Two water-blocking rollers 323 are aligned along the forward direction of the lead frame. The high-pressure nozzle 313 of the rinsing seat 311 faces laterally toward the support mesh belt 324. The plane between the two water-blocking rollers 323 is parallel to the rinsing seat 311. Therefore, the lead frame of the support mesh belt 324 on this plane is approximately parallel to the rinsing seat 311.

[0079] Multiple high-pressure nozzles 313 of the rinsing assembly 31 spray high-pressure liquid onto the passing lead frame to rinse away residual impurities. During rinsing, the support mesh belt 324 supports the back of the lead frame, preventing the lead frame from being deformed due to the huge liquid impact. This achieves both cleaning and protection of the lead frame, reducing the probability of damage.

[0080] One of the water-blocking rollers 323 is an adjusting roller 325. The adjusting roller 325 is located between the two water-blocking rollers 323 and is slidably mounted on the conveying support plate 321. The conveying support plate 321 has an adjusting groove 327. An adjusting plate 326 is installed at the bottom of the rotating shaft 322 for mounting the adjusting roller 325. The adjusting plate 326 is slidably mounted along the adjusting groove 327 to adjust the distance between the adjusting roller 325 and the water-blocking roller 323.

[0081] In this embodiment, the rotating shaft 322 can move along the length of the adjusting groove 327 via the adjusting groove 327. The adjusting roller 325 mounted on the rotating shaft 322 moves away from or closer to the water-blocking roller 323. After adjusting to the desired position, the adjusting plate 326 is fixed to the adjusting groove 327 by the cooperation of the long groove and the hole and the insertion of bolts. The distance between the adjusting roller 325 and the water-blocking roller 323 can adjust the tightness of the nested support mesh belt 324. According to the impact force of the high-pressure nozzle 313, the impact resistance of the lead frame supported on the support mesh belt 324 can be adjusted to prevent damage and deformation caused by excessive impact force.

[0082] After being high-pressure washed by the rinsing mechanism, a large amount of water stains will remain on the surface of the lead frame. Then, it enters the blower mechanism 4 to dry the remaining water stains. The blower mechanism 4 includes a blower trough 41. The blower trough 41 is provided with a motion channel 410 for the lead frame to move forward. One end of the blower trough 41 is provided with a feed port 411 for the lead frame to enter longitudinally, and the other end is provided with a discharge port 412 for the lead frame to exit longitudinally. The motion channel 410 is connected to the feed port 411 and the discharge port 412 respectively. The steel belt moves from the feed port 411 to the discharge port 412.

[0083] The air blowing channel 41 is provided with a plurality of air blowing components 42 for blowing and removing impurities from the front and back surfaces of the lead frame along the movement channel 410; the air blowing component 42 includes a bottom support seat 422 on both sides of the lead frame in the forward direction of the lead frame and an eccentric support seat 424 rotatably mounted on the bottom support seat 422. A rotatable air blowing column 420 is eccentrically mounted on the eccentric support seat 424. The air blowing column 420 is formed with an air knife groove 429 along its length direction. After the lead frame, which needs to be cleaned of impurities and water stains, enters the air duct 41, it moves forward through the motion channel 410. The air blower 42 blows air onto the front and back surfaces of the lead frame to remove impurities. The air blower 420 and the eccentric support 424 rotate to change the angle between the air blower 420 and the lead frame. In addition, the eccentric support 424 and the bottom support 422 can rotate to allow the air blower 420 mounted on the eccentric support 424 to swing away from or towards the lead frame. The distance between the two air blowers 420 changes, and the air pressure can be adjusted accordingly. This effectively protects the lead frame from damage while cleaning impurities and water stains.

[0084] The blower component 42 also includes a bottom fixing seat 421 installed on the bottom wall of the blower duct 41. The bottom fixing seat 421 communicates with the bottom support seat 422. The top of the bottom support seat 422 is formed with a first connecting hole 423. The bottom of the eccentric support seat 424 is formed with a bottom connecting sleeve 425 that is rotatably connected to the first connecting hole 423. The top of the eccentric support seat 424 is formed with an eccentrically arranged second connecting hole 426. The bottom of the blower column 420 is formed with a top connecting sleeve 428 that is rotatably connected to the second connecting hole 426. Both the first connecting hole 423 and the second connecting hole 426 are threaded holes. The outer ring surfaces of the bottom connecting sleeve 425 and the top connecting sleeve 428 are respectively formed with external thread structures.

[0085] In this embodiment, a pair of bottom support seats 422 are respectively installed on the bottom fixed seat 421. When it is necessary to adjust the distance between the two blower columns 420, the eccentric support seat 424 is threadedly engaged with the first connecting hole 423 on the top of the bottom support seat 422 through the bottom connecting sleeve 425. This causes the bottom connecting sleeve 425 of the eccentric support seat 424 to rotate around the first connecting hole 423 of the bottom support seat 422, causing the blower column 420 eccentrically installed on the bottom support seat 422 to swing closer to or further away from the lead frame, thereby adjusting the air pressure. The air pressure can be adjusted accordingly, effectively protecting the lead frame from damage while removing impurities and water stains. When it is necessary to change the angle between the air blown out by the air column 420 and the lead frame, after adjusting the spacing, the air column 420 rotates and engages with the second connecting hole 426 through the top connecting sleeve 428, so that the air knife groove 429 formed in the air column 420 rotates and changes direction. When the air is blown out, the angle formed with the lead frame changes, and the air outlet angle changes.

[0086] The bottom fixing base 421, bottom support base 422, eccentric support base 424, and air blowing column 420 are all formed with air cavities 427. The bottom fixing base 421 and the bottom support base 422 are integrally formed and connected. The air cavities 427 of the bottom support base 422 and the eccentric support base 424 are connected to the bottom connecting sleeve 425 through the first connecting hole 423. The air cavities 427 of the eccentric support base 424 and the air blowing column 420 are connected to the bottom connecting sleeve 425 through the second connecting hole 426. This allows air to flow from the air cavity 427 to the air blowing column 420, and the air is blown out through the air knife groove 429 to remove impurities and water stains.

[0087] After passing through the blower mechanism 4, the lead frame enters the electroplating unloading mechanism 5. The electroplating unloading mechanism 5 includes a flipping unloading mechanism 51 that flips and clamps the lead frame, which is conveyed to the end of the steel bar conveying mechanism 12, from a longitudinal posture to a lateral posture, and an unloading track mechanism 511 that forward conveys the lead frame. The unloading track mechanism 511 is connected to a receiving mechanism 513 for stacking lead frames. The receiving mechanism 513 includes multiple receiving boxes 514, each with a fitting groove 515 for inserting the lead frames. The unloading track mechanism 511 is equipped with a guide unloading conveying assembly 512 that rolls and conveys the lead frames into the receiving boxes 514. When the unloading lead frames are conveyed to the end by the unloading track mechanism 511, the top conveying wheel 516 and the bottom conveying wheel 517 are arranged with a gap and roll with the edge of the lead frames to roll and advance them into the fitting groove 515 of the receiving box 514. The receiving is carried out by rolling and conveying, eliminating the need for pushing, reducing the probability of deformation and damage to the lead frames, improving the stability of unloading, and facilitating the stacking of the receiving frames.

[0088] In summary, the present invention possesses the excellent characteristics described above, which enhances its effectiveness in use compared to previous technologies, making it a highly practical product.

[0089] The above description is only a preferred embodiment of the present invention. For those skilled in the art, there will be changes in the specific implementation and application scope based on the ideas of the present invention. The content of this specification should not be construed as a limitation of the present invention.

Claims

1. An electroplating processing equipment for multi-row high-density integrated circuit lead frames, comprising a steel belt conveyor mechanism for forward conveying the lead frames, wherein an electroplating mechanism, a rinsing mechanism, and a blower mechanism for electroplating the lead frames are arranged sequentially along the steel belt conveyor mechanism, characterized in that: The flushing mechanism includes a conveying assembly that supports and conveys the lead frame and a flushing assembly that is spaced apart from the conveying assembly. The conveying assembly includes multiple rotatable water-blocking rollers and a support mesh belt nested between the multiple water-blocking rollers that supports and conveys the lead frame. The flushing assembly includes multiple high-pressure nozzles that spray flushing liquid toward the support mesh belt. The blower mechanism includes a blower channel with a movement channel for the lead frame to move forward. Multiple blowers are arranged along the movement channel to blow air and remove impurities from the front and back surfaces of the lead frame. Each blower includes a bottom support seat located on both sides of the lead frame in the forward direction and an eccentric support seat rotatably mounted on the bottom support seat. A rotatable blower column is eccentrically mounted on the eccentric support seat, and the blower column has a blower knife groove formed along its length. The electroplating mechanism is connected to a defoaming mechanism for eliminating foam. The defoaming mechanism includes a recovery tank for storing electrolyte, the recovery tank forming a reflux chamber and a drain chamber. A defoaming chamber for foam to float is provided between the bottom of the drain chamber and the reflux chamber. The recovery tank is equipped with multiple reflux pipes that lead to the reflux chamber. Multiple branch pipes with a diameter smaller than the reflux pipe are connected to the bottom of the reflux pipes. The drain chamber is equipped with multiple drain pipes that discharge the electrolyte. The conveying assembly also includes a conveying support plate for supporting the water-blocking roller, the conveying support plate being equipped with a plurality of longitudinally arranged rotating shafts, and the water-blocking roller being longitudinally mounted on the rotating shafts; The number of rotating shafts is at least three, wherein the support mesh belt forms a closed loop after sequentially winding around multiple water-blocking rollers, wherein two water-blocking rollers are aligned along the forward direction of the lead frame, and one of the water-blocking rollers is an adjusting roller, which is located between the two water-blocking rollers and is slidably mounted on the conveying support plate; the conveying support plate has an adjusting groove, and an adjusting plate is installed at the bottom of the rotating shaft for mounting the adjusting roller, and the adjusting plate is slidably mounted along the adjusting groove to adjust the distance between the adjusting roller and the water-blocking roller; A first partition and a second partition are arranged at intervals between the reflux chamber and the drain chamber. There are passageways between the bottom of the first partition and the bottom wall of the recovery tank for the electrolyte to pass through. A defoaming partition is installed between the first partition and the second partition. The bottom of the defoaming partition is installed on the bottom wall of the recovery tank. The height of the defoaming partition is higher than the passageways between the first partition and the second partition. The first partition, the second partition, and the defoaming partition form the defoaming chamber.

2. The electroplating equipment for multi-row high-density integrated circuit lead frames according to claim 1, characterized in that: The flushing assembly includes a longitudinally arranged flushing seat, with multiple high-pressure nozzles mounted laterally on the flushing seat; the support mesh belt is formed of metal, wherein the plane between the two water-blocking rollers is parallel to the flushing seat.

3. The electroplating equipment for multi-row high-density integrated circuit lead frames according to claim 1, characterized in that: One end of the blowing trough is provided with a feed inlet for the lead wire frame to enter, and the other end is provided with a discharge outlet for the lead wire frame to exit. The motion channel is connected to the feed inlet and the discharge outlet respectively. The blowing component also includes a bottom fixing seat installed at the bottom of the blowing trough. The bottom fixing seat is connected to the bottom support seat. The top of the bottom support seat is formed with a first connecting hole, and the bottom of the eccentric support seat is formed with a bottom connecting sleeve that is rotatably connected to the first connecting hole.

4. The electroplating equipment for multi-row high-density integrated circuit lead frames according to claim 3, characterized in that: The top of the eccentric support base is formed with an eccentrically arranged second connecting hole, and the bottom of the blower column is formed with a top connecting sleeve that is rotatably connected to the second connecting hole; the first connecting hole and the second connecting hole are both threaded holes, and the outer ring surfaces of the bottom connecting sleeve and the top connecting sleeve are respectively formed with external thread structures.

5. The electroplating equipment for multi-row high-density integrated circuit lead frames according to claim 4, characterized in that: The bottom fixing seat, bottom support seat, eccentric support seat and blowing column are all formed with air cavities. The air cavities of the bottom support seat and the eccentric support seat are connected to the top connecting sleeve through the first connecting hole; the air cavities of the eccentric support seat and the blowing column are connected to the bottom connecting sleeve through the second connecting hole.

6. The electroplating equipment for multi-row high-density integrated circuit lead frames according to claim 1, characterized in that: The drain pipe is installed at the bottom of the drain chamber; the return chamber is provided with a pipe mounting plate for installing the return pipe, and the pipe mounting plate has a pipe mounting hole for the return pipe to pass through; a pipe connector is sealed at the bottom of the return pipe, the top of the pipe connector is formed with a top connecting cavity that is inserted into the return pipe, and the bottom of the pipe connector is formed with multiple diversion holes that communicate with the top connecting cavity, and the diversion pipe is inserted into the diversion holes; the outlet at the bottom of the diversion pipe is lower than the liquid level.

7. The electroplating equipment for multi-row high-density integrated circuit lead frames according to claim 6, characterized in that: The drain chamber is longitudinally equipped with a level tube for detecting the liquid level; a heating assembly is also provided at the bottom of the drain chamber, which includes a heating tube and a heat exchange tube; both the heating tube and the heat exchange tube are corrugated; multiple upper fastening sleeves nested on the top of the heat exchange tube and multiple lower fastening sleeves nested on the bottom of the heat exchange tube are provided in the drain chamber; a top connecting strip is provided between two adjacent upper fastening sleeves and a bottom connecting strip is provided between two adjacent lower fastening sleeves.

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