Drying, cleaning and etching integrated equipment for lead frame etching production line

Abstract

The invention relates to the technical field of lead frame etching, and in particular to an integrated drying, cleaning and etching device for a lead frame etching production line, comprising a drying mechanism, a cleaning mechanism and an etching mechanism, wherein the drying mechanism comprises a drying chamber, the drying chamber is provided with a drying channel and a drying inlet and outlet; the cleaning mechanism comprises a flushing chamber, the flushing chamber is provided with an inlet and an outlet and a flushing channel; the cleaning mechanism is connected to a film stripping cylinder mechanism for solid-liquid separation of waste water, and the etching mechanism comprises an etching box, the etching box is provided with a through port and an etching channel; the drying chamber of the drying mechanism, the cleaning box of the cleaning mechanism and the etching box of the etching mechanism are aligned with each other; wherein the drying inlet and outlet, the cleaning inlet and outlet and the through port are coaxially aligned and connected, and the drying channel is connected with the flushing channel and the etching channel to form a long conveying line, so that the lead frame can seamlessly enter from the drying chamber to the cleaning box and then from the cleaning box to the etching box, thereby reducing the exposure of the lead frame.

Description

Technical Field

[0001] The invention relates to the technical field of lead frame etching, and in particular to drying, cleaning and etching integrated equipment for a lead frame etching production line. Background Art

[0002] Integrated circuits are the core of all kinds of electronic products, mainly composed of semiconductor chips and lead frames, among which the lead frame mainly serves as the connection between the chip and the outside, and is a key component in the manufacture of integrated circuits. With the development of electronic information products towards miniaturization, thinness, lightness, multi-function and intelligence, integrated circuits are developing towards large-scale integrated circuits and ultra-large-scale integrated circuits, and their copper-based lead frames are developing towards high precision, fine lead spacing and multi-pin.

[0003] Etching is a stress-free processing method. First, a photosensitive resist is used to protect part of the workpiece, and then a strong oxidant is used to etch away the other parts, and finally the required components are obtained. Etched lead frames are different from traditional stamped lead frames. They are made by photolithography. Similar to the etching process of printed circuit boards, its basic principle is to use the photosensitive properties of chemical photosensitive materials to form an anti-etching pattern mask on the metal substrate, and then use an etchant to corrode part of the metal to obtain the desired product. The etching method can well realize the production of high-density and multi-pin lead frames, and has become the mainstream of high-precision lead frame manufacturing.

[0004] In the existing etching process, a nozzle is required to spray etching liquid for processing. Most of the nozzles cannot be moved. The lead frame is moved to spray to the specified position to improve the uniformity of the spray. The liquid can react with the lead frame more evenly. However, some lead frames are continuous long strips, so the lead frame cannot be moved, which affects the etching effect. Summary of the invention

[0005] The object of the present invention is to provide an integrated drying, cleaning and etching device for a lead frame etching production line in view of the deficiencies of the prior art.

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

[0007] The integrated drying, cleaning and etching equipment of the lead frame etching production line comprises a drying mechanism, a cleaning mechanism and an etching mechanism.

[0008] The drying mechanism comprises a drying chamber, the drying chamber is provided with a drying channel for progressively conveying the lead frame and an inlet and outlet for the lead frame to pass through, a drying assembly for drying the lead frame is provided along the drying channel, the drying assembly comprises a plurality of drying boxes arranged at intervals along the length direction of the drying channel, the drying box is formed with an air outlet facing the lead frame, the drying channel is provided with a mounting piece along the length direction thereof, and the drying box is provided with a rotating adjustment piece rotatably connected to the mounting piece;

[0009] The cleaning mechanism is connected to a film stripping cylinder mechanism, which includes a rotatable film stripping cylinder assembly, which includes a drum and a rotating driving member for driving the drum to rotate, the drum wall is a mesh structure, one end of the drum is formed with a liquid inlet, and the other end is coaxially formed with a discharge port, a centrifugal channel for the film stripping liquid to pass through is formed between the liquid inlet and the discharge port, and the diameter of the centrifugal channel increases continuously from the liquid inlet to the discharge port;

[0010] The etching mechanism includes an etching box, which is provided with a passage for the lead frame to enter and exit and an etching channel for conveying the lead frame forward. An etching component for spraying liquid through the lead frame is arranged along the etching channel. The etching component includes a support member and a movable driving member for driving the support member to move back and forth. The support member is equipped with multiple spray heads that can spray liquid toward the lead frame.

[0011] The beneficial effects of the present invention are as follows: the lead frame to be dried enters the drying chamber through the inlet and outlet, and moves along the conveying channel. The air outlet of the drying box blows hot air to the lead frame passing through to achieve drying. When the angle of the air outlet of the drying box needs to be adjusted, the direction of the air outlet is changed by rotating the adjusting member and the mounting member, and the air outlet can be tilted to facilitate the diffusion of hot air. The angle adjustment can be completed without replacing the drying box.

[0012] The cleaning mechanism allows the waste liquid after film stripping to enter the drum through the liquid inlet. The drum rotates continuously to generate centrifugal force, which separates the film and liquid in the film stripping liquid, so that the liquid can be recycled. Since the diameter of the centrifugal channel increases from the liquid inlet to the discharge port, the centrifugal force in the area where the waste liquid passes increases continuously, so that the liquid in the waste liquid can be gradually thrown out, and the impurities are discharged through the discharge port. The separation effect is gradually increased, and the separated liquid can be recycled after secondary processing.

[0013] The lead frame to be etched enters the etching box through the through port, the etching channel transports the lead frame forward, the etching assembly works, and a support member equipped with multiple injection heads etches the lead frame with the sprayed liquid medicine, and the support member is driven to move back and forth by the movable driving member, so that the liquid medicine sprayed by the injection head can react with the lead frame more evenly, without moving the lead frame, thereby ensuring the stability of the etching process. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of the etching production line.

[0015] Figure 2 It is a structural schematic diagram of the drying mechanism.

[0016] Figure 3 It is a schematic diagram of the structure of the drying component and the conveying channel.

[0017] Figure 4 This is a schematic structural diagram of the drying component and conveying channel from another perspective.

[0018] Figure 5 It is a schematic diagram of the structure in which the drying component and the conveying channel are connected.

[0019] Figure 6 It is a structural diagram of the cleaning mechanism.

[0020] Figure 7 Schematic diagram of the internal structure of the flushing chamber.

[0021] Figure 8 It is a structural schematic diagram of the cooperation between the flushing channel and the flushing mechanism.

[0022] Fig. 9 A schematic diagram of the structure of the viewing window.

[0023] Fig.10 This is a schematic diagram of the partially enlarged structure of the flushing channel.

[0024] Fig.11 It is a structural schematic diagram of the film-removing cylinder mechanism.

[0025] Fig.12 This is a schematic diagram of the structure of one of the film stripping cylinder components.

[0026] Fig.13 It is a schematic diagram of the structure of the drum from another perspective.

[0027] Fig.14 It is a structural schematic diagram of the etching injection mechanism.

[0028] Fig.15 It is a schematic diagram of the structure of the etching channel and the etching component.

[0029] Fig.16 Schematic diagram of the structure of the etching component.

[0030] Fig.17 This is a schematic diagram of the locally enlarged structure of the etching channel.

[0031] Fig.18 It is a structural schematic diagram of the connection between the mobile driving member and the supporting frame.

[0032] Reference numerals include:

[0033] 1-Drying mechanism,

[0034] 11-Drying room,

[0035] 111-drying inlet and outlet, 112-drying channel, 113-drying conveying plate, 114-drying conveying roller, 12-drying assembly,

[0036] 120-drying box, 121-connection pipe, 122-air outlet, 123-side support bar, 124-connection block, 125-rotation axis, 126-fitting groove, 127-top pressing block, 128-semicircular groove, 129-tension screw, 13-mounting parts,

[0037] 131-first adjusting rod, 132-second adjusting rod, 133-adjusting column, 134-adjusting seat,

[0038] 135-first adjustment hole, 136-second adjustment hole,

[0039] 2-Cleaning mechanism,

[0040] 21-Flushing room,

[0041] 210- flushing channel, 211- cleaning inlet and outlet, 212- cleaning conveying plate, 213- cleaning conveying roller,

[0042] 214-cleaning rubber roller, 215-partition plate, 216-baffle plate, 217-through slot,

[0043] 22-Installation structure,

[0044] 221-first mounting groove, 222-second mounting groove, 223-rolling bearing, 224-spur gear,

[0045] 225-transmission shaft, 226-first bevel gear, 227-second bevel gear, 228-bearing seat,

[0046] 23- Flushing mechanism,

[0047] 231- flushing plate, 232- flushing pipe, 233- high pressure nozzle,

[0048] 24-View Window,

[0049] 241-first inner groove, 242-second inner groove, 243-inner cover plate, 244-outer cover plate, 245-sealing strip, 246-pressing block, 247-frame plate, 248-inclined surface, 249-arc groove,

[0050] 3- Film removal cylinder mechanism

[0051] 31-film removal cylinder assembly,

[0052] 311-drum, 312-liquid inlet, 313-discharge port, 314-support bracket, 315-filter cover,

[0053] 316-filter box, 317-filter channel, 318-support rotating shaft,

[0054] 32-Rotation drive member,

[0055] 321-outer ring sleeve, 322-fixed sleeve, 323-connecting column, 324-support guide wheel, 325-guide wheel support seat,

[0056] 326-limiting plate, 327-gear ring, 328-driving motor, 329-driving gear,

[0057] 33-Spray washing components,

[0058] 331-spray cleaning pipe, 332-washing nozzle, 333-waste collection tank,

[0059] 4- Etching mechanism

[0060] 41- Etching box,

[0061] 410-etching channel, 411-passing port, 412-etching conveying plate, 413-etching mounting structure,

[0062] 414-etched conveyor roller, 415-guide rubber roller, 416-roller sleeve,

[0063] 42-Etching components,

[0064] 421-support member, 422-guide plate, 423-sliding channel, 424-support frame, 425-guide rolling wheel,

[0065] 426-top liquid pipe, 427-bottom injection pipe, 428-injection head,

[0066] 43- mobile drive parts,

[0067] 431-drive shaft, 432-eccentric wheel, 433-crank block, 434-drive groove, 435-cam ball,

[0068] 436- shielding cover, 437- connecting shaft, 438- latch, 439- rotating hole. DETAILED DESCRIPTION

[0069] The present invention is described in detail below with reference to the accompanying drawings.

[0070] like Figure 1-18As shown, the integrated drying, cleaning and etching equipment of the lead frame etching production line includes a drying mechanism 1, a cleaning mechanism 2 and an etching mechanism 4.

[0071] The drying mechanism 1 includes a drying chamber 11, which is provided with a drying channel 112 for progressively conveying the lead frame and a drying inlet and outlet 111 for the lead frame to pass through. The drying channel 112 includes a drying conveying plate 113 arranged along the length direction of the drying chamber 11, and the drying conveying plate 113 is equipped with a plurality of drying conveying rollers 114 arranged at intervals to support and convey the lead frame. Two adjacent drying conveying rollers 114 are arranged equidistantly, and the drying conveying rollers 114 can rotatably convey the lead frame entering the drying chamber 11. A drying component 12 for drying the lead frame is provided along the drying channel 112, and the drying component 12 is respectively arranged above and below the drying channel 112. The drying device blows hot air to the top and bottom surfaces of the conveyed lead frame for drying.

[0072] The drying assembly 12 includes a plurality of drying boxes 120 arranged at intervals along the length direction of the drying channel 112. The drying box 120 is formed with an air outlet 122 facing the lead frame. The drying box 120 is also connected to a high-temperature resistant connecting pipe 121 for easy angle adjustment. The drying channel 112 is provided with a mounting member 13 along its length direction. The mounting member 13 includes a side support bar 123. The drying box 120 is provided with a rotating adjustment member rotatably connected to the side support bar 123. When the angle of the air outlet 122 of the drying box 120 needs to be adjusted, the direction of the air outlet 122 is changed by rotating the adjusting member in coordination with the mounting member 13, and it can be changed to inclined blowing, which is beneficial to the diffusion of hot air, and the angle adjustment can be completed without replacing the drying box 120.

[0073] Preferably, the rotating adjustment member includes a connecting block 124 formed on the side of the drying box 120, the connecting block 124 is embedded with a rotating shaft 125, the cross-section of the connecting block 124 is elliptical or polygonal, one end of the rotating shaft 125 is formed with an interlocking groove 126 that is adapted to the cross-sectional shape of the connecting block 124, one end of the rotating shaft 125 is installed on the side support bar 123, and the side support bar 123 is provided with a fastener for loosely or tightly installing the rotating shaft 125.

[0074] In this embodiment, when the rotating shaft 125 rotates, since the connecting block 124 is inserted into the engaging groove 126, the drying box 120 formed with the connecting block 124 rotates accordingly at the same time, and the angle of the air outlet 122 formed in the drying box 120 changes.

[0075] The fasteners include a top pressing block 127. The fitting surfaces of the top pressing block 127 and the side support strip 123 are respectively formed with semicircular grooves 128 for inserting the rotating shaft 125. The top pressing block 127 is penetrated by a tensioning screw 129 connected to the side support strip 123. When adjustment is required, the tensioning screw 129 is loosened, so that the top pressing block 127 and the support strip are respectively loosened from the rotating shaft 125. At this time, the rotating shaft 125 can be rotated in the semicircular groove 128 to adjust the installation angle. After the adjustment is completed, the tensioning bolt is tightened, and the top pressing block 127 is tightly pressed against the rotating shaft 125 embedded in the semicircular groove 128 to prevent it from rotating a second time after the adjustment is completed.

[0076] The mounting member 13 further includes a first adjusting rod 131 longitudinally mounted on the top of the drying conveying plate 113 of the drying channel 112, a second adjusting rod 132 is penetrated through the side support bar 123, and the first adjusting rod 131 and the second adjusting rod 132 are respectively connected with an adjusting column 133. One end of the adjusting column 133 is fixedly connected to the side support bar 123 of another drying component 12, and an adjusting seat 134 and a first adjusting hole 135 cooperating with the first adjusting rod 131 are formed on the top of the adjusting column 133, and a second adjusting hole 136 cooperating with the second adjusting rod 132 is penetrated through the adjusting seat 134. The first adjusting rod 131 and the second adjusting rod 132 are both threaded rods, and the first adjusting hole 135 and the second adjusting hole 136 are both threaded holes.

[0077] When adjusting the height, the first adjusting rod 131 is rotated to cooperate with the first adjusting hole 135 of the adjusting seat 134, so that the height of the first adjusting rod 131 changes, and accordingly, the height of the adjusting column 133 changes. At this time, the height of the side support bar 123 connected to the bottom of the adjusting column 133 and the top side support bar 123 changes. Then, the second adjusting rod 132 is rotated to cooperate with the second adjusting hole 136, so that the height of the second adjusting rod 132 changes. At this time, the height of the top side support bar 123 can change, and the height of the top side support bar 123 can be adjusted. Therefore, the height of the upper and lower drying components 12 can be adjusted, so that the distance between the air outlet 122 and the lead frame can be adjusted.

[0078] The cleaning mechanism 2 is divided into two cleaning sections, each of which includes a flushing chamber 21. The flushing chamber 21 is provided with a cleaning inlet and outlet 211 for the lead frame to pass through and a flushing channel 210 for conveying the lead frame forward. The flushing channel 210 includes cleaning conveying plates 212 arranged on both sides of the forward direction of the lead frame.

[0079] The cleaning and conveying plate 212 is provided with mounting structures 22 equidistantly along its length direction, and the mounting structure 22 includes a first mounting groove 221 and a second mounting groove 222 formed on the cleaning and conveying plate 212. The mounting structure 22 is detachably arranged with a cleaning and conveying roller 213, wherein the diameter of the cleaning and conveying roller 213 is adapted to the width of the first mounting groove 221, and the width of the second mounting groove 222 is greater than the first mounting groove 221, so that the first mounting groove 221 and the second mounting groove 222 are coaxially connected and form a stepped groove structure, and the second mounting groove 222 is installed with a rolling bearing 223 for mounting the cleaning and conveying roller 213.

[0080] The cleaning conveying roller 213 embedded with the rolling bearing 223 is installed on the first installation groove 221 and the second installation groove 222 of the cleaning conveying plate 212 to realize the rolling forward conveying of the lead frame. The spacing of the cleaning conveying roller 213 can be adjusted according to needs. When adjusting, the cleaning conveying roller 213 can be directly removed.

[0081] In addition, at least one mounting structure 22 is equipped with two cleaning conveying rollers 213 for rolling and conveying the lead frame. A spur gear 224 formed by plastic material is installed at one end of the cleaning conveying roller 213. The two cleaning conveying rollers 213 installed on the same mounting structure 22 are driven and matched through the spur gear 224. The cleaning conveying rollers 213 roll the passing lead frame, and the flushing mechanism 23 can prevent the lead frame from warping or concave during flushing, reduce the probability of deformation, and effectively protect the lead frame.

[0082] Preferably, the cleaning conveying roller 213 is embedded with a cleaning rubber roller 214 formed of plastic material, which can improve the contact friction with the lead frame, and the rolling bearing 223 is a bearing formed of PE material. Since the lead frame is etched using metal liquid, the flushing channel 210 made of plastic material will not react with the liquid, and the liquid will not be affected by the flushing channel 210, thereby ensuring the etching process quality.

[0083] Preferably, a first bevel gear 226 made of plastic material is installed at one end of the cleaning conveying roller 213, a rotatable transmission shaft 225 is arranged along the length direction of the cleaning conveying plate 212, and second bevel gears 227 meshing with the first bevel gears 226 are installed at intervals on the transmission shaft 225, and a plurality of coaxially aligned bearing seats 228 are installed on the cleaning conveying plate 212, and the bearing seats 228 are provided for the transmission shaft 225 to pass through and install. The second bevel gear 227 is made of plastic material, and the transmission shaft 225 rotates under the drive of the motor, and the second bevel gear 227 nested in the transmission shaft 225 meshes with the first bevel gear 226 of the cleaning conveying roller 213 for transmission, and the lead frame can be conveyed and rolled, and the second bevel gear 227 is located at the bottom of the first bevel gear 226, and the cleaning conveying roller 213 is easy to disassemble.

[0084] A plurality of partitions 215 are arranged at intervals in the flushing chamber 21. Each partition 215 is provided with a coaxially aligned through groove 217 for the flushing channel 210 to pass through. Baffles 216 are respectively installed on the front and back sides of the partition 215. The flushing chamber 21 can be divided by the partition 215. After the division, a large amount of liquid in the flushing chamber 21 overflows to the outside of the partition 215, so that the lead frame has a flushing effect with different injection pressures at different conveying positions.

[0085] A flushing mechanism 23 for flushing the lead frame is arranged along the flushing channel 210. The flushing mechanism 23 is arranged above and below the flushing channel 210 respectively. The flushing mechanism 23 includes a pair of flushing plates 231 arranged with gaps. The flushing plates 231 are arranged with multiple flushing tubes 232 along their length directions. Each flushing tube 232 is equipped with multiple high-pressure nozzles 233 facing the lead frame. When the lead frame passes through the flushing channel 210, the high-pressure nozzle 233 of the flushing tube 232 sprays and flushes the lead frame, so that the front and back sides of the lead frame can be cleaned at the same time, thereby improving the cleanliness of the flushing.

[0086] A viewing window 24 with a stepped structure is provided on the side of the flushing chamber 21, and a sealing strip 245 is installed on the inner wall of the viewing window 24 near the inner side. An inner cover plate 243 is installed on the viewing window 24 through the sealing strip 245, which can improve its sealing performance and prevent liquid leakage in the flushing chamber 21. An outer cover plate 244 is installed on the inner wall of the viewing window 24 near the outer side. Both the inner cover plate 243 and the outer cover plate 244 are made of acrylic material and have a transparent effect, so that the flushing effect can be observed.

[0087] Preferably, the viewing window 24 includes a first inner groove 241 installed with a sealing strip 245, the first inner groove 241 is a deformable stepped groove, a frame plate 247 is installed on the outer side of the first inner groove 241, and the inner cover plate 243 is installed with a rotatable clamping block 246 through a rotating shaft seal. The clamping block 246 is a cam structure, and the clamping block 246 is formed with an inclined surface 248 that can be embedded between the frame plate 247 and the first inner groove 241. The groove wall of the first inner groove 241 is also formed with an arc groove 249 for the clamping block to be embedded.

[0088] The viewing window 24 also includes a second inner groove 242, which is formed with a chimeric structure, and the outer cover plate 244 can be installed through the chimeric structure, which is easy to disassemble. When the inner cover needs to be disassembled, the inner cover plate 243 just matches with the first inner groove 241 installed with the sealing strip 245, and then the pressing block 246 is rotated, and a part of the pressing block 246 is rotated into the arc groove 249. At this time, the pressing block 246 is continuously embedded between the first inner groove 241 and the frame plate 247. Since the pressing block 246 is formed with an inclined surface 248, the pressing block 246 continuously presses the inner cover plate 243 into the first inner groove 241, so that the sealing strip 245 is deformed, and fits more closely with the inner cover plate 243, and the sealing is further improved; when it needs to be disassembled, the pressing block 246 is rotated outward, so that the pressure on the inner cover plate 243 is reduced, and it can be removed from the first inner groove 241.

[0089] The film stripping cylinder mechanism 3 includes a rotatable film stripping cylinder assembly 31, which includes a roller 311 and a rotating driving member 32 for driving the roller 311 to rotate. A liquid inlet 312 is formed at one end of the roller 311, and a discharge port 313 is coaxially formed at the other end. A centrifugal channel for the film stripping liquid to pass through is formed between the liquid inlet 312 and the discharge port 313, and the diameter of the centrifugal channel increases continuously from the liquid inlet 312 to the discharge port 313. The roller 311 is installed through a support bracket 314, and a filter cover 315 is installed on the support bracket 314. A filter box 316 is installed at the bottom of the filter cover 315, and a filter channel 317 connected to the filter box 316 is formed at the bottom of the filter cover 315.

[0090] The waste liquid after film stripping enters the drum 311 through the liquid inlet 312. The drum 311 rotates continuously to generate centrifugal force, and the film and liquid in the film stripping liquid are separated, so that the liquid can be recycled. Reduce waste; because the diameter of the centrifugal channel increases continuously from the liquid inlet 312 to the discharge port 313, the centrifugal force in the area where the waste liquid passes through increases continuously, so that the liquid in the waste liquid can be gradually thrown out to the filter cover 315, and the bottom of the filter cover 315 flows into the filter box 316 through the filter channel 317 for collection. Impurities are discharged through the discharge port 313, and the separation effect gradually increases. The separated liquid can be recycled after secondary processing.

[0091] The drum 311 is provided with two outer ring sleeves 321, which are respectively nested at both ends of the drum 311. The drum 311 is also nested with a plurality of fixed sleeves 322 located between the two outer ring sleeves 321. The inner ring walls of the outer ring sleeve 321 and the fixed sleeve 322 are respectively connected to the outer ring wall of the drum 311 in one piece, and the fixed sleeve 322, the outer ring sleeve 321 and the drum 311 are formed into an integral structure by welding. The outer ring sleeve 321 and the fixed sleeve 322 have the same outer diameter, and connecting columns 323 that pass through the fixed sleeve 322 are respectively installed between the two outer ring sleeves 321. The fixed sleeve 322 and the outer ring sleeve 321 are respectively connected in series through the connecting columns 323, so as to further improve the overall stability of the drum 311.

[0092] A support guide wheel 324 rollingly matched with the roller 311 is installed at the bottom of the support bracket 314, and four guide wheel support seats 325 aligned with each other in a transverse direction are installed at the bottom of the support bracket 314, of which two guide wheel support seats 325 are horizontally aligned and close to the discharge port 313. The other two guide wheel support seats 325 are horizontally aligned and close to the liquid inlet 312, and the guide wheel support seats 325 are installed with a support rotating shaft 318 for the support guide wheel 324 to rotate. The two end surfaces of the support guide wheel 324 located close to the discharge port 313 are coaxially installed with a limiting disk 326, and the outer diameter of the limiting disk 326 is larger than the outer diameter of the support guide wheel 324. The outer ring sleeve 321 close to the discharge port 313 rolls with the support guide wheel 324 installed with the limiting disk 326.

[0093] When the roller 311 rolls with the support guide wheel 324 through the outer ring sleeve 321, one of the outer ring sleeves 321 will not fall off the support guide wheel 324 under the limitation of the limiting plates 326 on the two end surfaces of the support guide wheel 324. The roller 311 can be limited by the limiting plates 326 to prevent the roller 311 from falling off due to its axial movement. When the roller 311 rotates, the support guide wheel 324 rolls with it, which can improve the rotation stability of the roller 311 and enable rapid solid-liquid separation of the waste liquid in the roller 311.

[0094] Preferably, the rotating driving member 32 includes a gear ring 327 fixedly nested in the drum 311, the gear ring 327 is coaxially mounted on the outer ring sleeve 321 close to the liquid inlet 312, the support bracket 314 is equipped with a driving motor 328, the driving end of the driving motor 328 is equipped with a driving gear 329 meshing with the gear ring 327, the driving gear 329 is rotatably mounted on the top of the supporting bracket 314, the driving gear 329 meshes with the gear ring 327, and rotates under the drive of the driving motor 328, thereby driving the drum 311 to rotate, and the waste liquid entering the drum 311 will be thrown out to the filter cover 315 due to the centrifugal force of the drum 311, and then flow into the filter box 316 at the bottom.

[0095] The support bracket 314 is provided with a spray assembly 33 along the axial direction of the drum 311. The spray assembly 33 includes a spray pipe 331. The spray pipe 331 is provided with a plurality of flushing nozzles 332 along the length direction. Since the drum 311 is a mesh structure, the spray assembly 33 can clean the drum 311. The cleaning liquid of the flushing nozzle 332 can flush impurities from the mesh. The film stripping cylinder mechanism 3 also includes a waste collection cylinder 333 arranged beside the film stripping cylinder assembly 31. The solids of the drum 311 are discharged into the waste collection cylinder 333 through the discharge port 313 for waste collection.

[0096] The etching mechanism 4 includes an etching box 41. The etching box 41 is provided with through openings 411 for the lead frame to enter and exit on the front and rear sides, respectively. An etching channel 410 for conveying the lead frame forward is provided between the two through openings 411. The etching channel 410 includes an etching conveying plate 412 arranged along the length direction of the etching box 41. The etching conveying plate 412 is provided with etching mounting structures 413 at intervals along its length direction. The etching mounting structure 413 is detachably provided with rotatable etching conveying rollers 414. Two adjacent etching conveying rollers 414 are connected by transmission so that all etching conveying rollers 414 can rotate at the same time. The etching mounting structure 413 is a mounting groove. The etching conveying roller 414 is rotatably placed on the etching mounting structure 413 through a bearing for easy disassembly. The etching conveying roller 414 conveys the lead frame entering the etching box 41 forward to prevent the lead frame from being arched during transportation. At least one etching installation structure 413 is installed with two etching conveying rollers 414 for rolling and conveying the lead frame. The two etching conveying rollers 414 installed on the same etching installation structure 413 are connected by gear meshing transmission to achieve rolling. After conveying for a distance, it will pass through a pair of etching conveying rollers 414 arranged in a rolling manner. The rolling pressing of the two etching conveying rollers 414 can prevent the lead frame from arching during the etching process, thereby improving the stability of the etching.

[0097] The etching conveying rollers 414 at both ends of the etching conveying plate 412 are nested with guide rubber rollers 415 along their length direction. The etching conveying rollers 414 at both ends of the etching conveying plate 412 are a pair. Through the guide rubber rollers 415, the friction with the lead frame is higher during rolling, and the plastic rubber rollers will not cause damage to the lead frame.

[0098] The etching conveying roller 414 is nested with a plurality of roller sleeves 416 arranged at intervals along its length direction. During rolling support, the roller sleeves 416 can also increase the contact friction with the lead frame and improve the conveying stability.

[0099] An etching component 42 for spraying liquid onto the lead frame is arranged along the etching channel 410. The etching component 42 includes a support member 421 and a movable driving member 43 for driving the support member 421 to move back and forth. The support member 421 is equipped with a plurality of spray heads 428 that can spray liquid toward the lead frame. The support members 421 of the etching component 42 are respectively arranged above and below the etching channel 410. By spraying liquid onto the lead frame passing through the support member 421 equipped with the spray head 428, both the front and back sides of the lead frame can be etched at the same time.

[0100] The support member 421 includes a support frame 424 and a guide plate 422 for the support frame 424 to slide. A plurality of bottom spray pipes 427 are arranged on the support frame 424. Each bottom spray pipe 427 is equipped with a plurality of spray heads 428. The support frame 424 is also equipped with a plurality of top liquid pipes 426. The top liquid pipes 426 are arranged perpendicular to the bottom spray pipes 427 and are connected to the bottom spray pipes 427. The liquid medicine is introduced into the bottom spray pipes 427 through the top liquid pipes 426, and the bottom spray pipes 427 then spray the liquid medicine outward through the spray heads 428.

[0101] The guide plate 422 is arranged perpendicular to the forward direction of the lead frame. A sliding channel 423 is opened along the length direction of the guide plate 422. The sliding channel 423 is laterally formed on the inner wall of the guide plate 422. The support frame 424 is equipped with a guide rolling wheel 425 that rolls with the sliding channel 423. The guide rolling wheel 425 rolls in the sliding channel 423. When the support frame 424 moves, the guide rolling wheel 425 rolls with the sliding channel 423 of the guide plate 422, so that the support frame 424 equipped with the injection head 428 moves more smoothly.

[0102] The mobile driving member 43 includes a rotatable driving shaft 431, which rotates under the drive of a motor. The top and bottom of the driving shaft 431 are respectively connected to the supporting member 421, so that the supporting frame 424 above and below the etching channel 410 can move horizontally.

[0103] Specifically, the drive shaft 431 is installed with an eccentric wheel 432, and the eccentric wheel 432 is nested with a crank member. The eccentric wheel 432 is provided with an eccentric hole for inserting the drive shaft 431, and the crank member includes a crank block 433. The crank block 433 is formed with a driving groove 434 for installing the eccentric wheel 432, and the eccentric wheel 432 and the driving groove 434 are rollingly matched. The inner ring wall of the driving groove 434 is equipped with a plurality of cam balls 435 that roll with the eccentric wheel 432. A shielding cover 436 that folds the cam balls 435 is installed on the top of the driving groove 434 to prevent debris from entering the cam balls 435. A connecting shaft 437 is installed at one end of the crank block 433. One end of the connecting shaft 437 is rotatably installed on the support frame 424. The support frame 424 is equipped with a latch 438. One end of the connecting shaft 437 is longitudinally penetrated by a rotating hole 439 that cooperates with the latch 438. One end of the connecting shaft 437 is rotatably connected to the latch 438 through the rotating hole 439.

[0104] In this embodiment, the driving shaft 431 rotates, causing the eccentric wheel 432 to rotate accordingly. The eccentric wheel 432 swings accordingly with the driving shaft 431 as the axis. When swinging, the eccentric wheel 432 rolls and cooperates in the driving groove 434 of the driving block through the cam ball 435. Since the eccentric wheel 432 keeps swinging, the position of the driving shaft 431 does not change, and thus the crank block 433 is guided to move in an arc trajectory, causing the driving shaft 431 connected to the crank block 433 to move accordingly. Since the crank block 433 moves in an arc trajectory, the connecting shaft 437 is offset, and the connecting shaft 437 is rotated around the pin 438 through the rotating hole 439 to prevent the connecting shaft 437 from breaking; thereby driving the support frame 424 to move back and forth; allowing the liquid sprayed from the injection head 428 to react with the lead frame more evenly without moving the lead frame, thereby ensuring the stability of the etching process.

[0105] Preferably, the drying chamber 11 of the drying mechanism 1, the cleaning box 21 of the cleaning mechanism 2, and the etching box 41 of the etching mechanism 4 are aligned along the forward direction of the lead frame; wherein the drying inlet and outlet 111 of the drying chamber 11, the cleaning inlet and outlet 211 of the cleaning box 2, and the through port 411 of the etching box 4 are coaxially aligned and connected, and the drying channel 112 is connected to the flushing channel 210 and the etching channel 410 to form a long conveyor line, so that the lead frame can seamlessly enter from the drying chamber 11 to the cleaning box 21 and then from the cleaning box to the etching box 41, thereby reducing the exposure of the lead frame.

[0106] In summary, it can be seen that the present invention has the above-mentioned excellent characteristics, which can enhance the performance unprecedented in the prior art and become a product with great practical value.

[0107] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation methods and application scopes. The content of this specification should not be understood as limiting the present invention.

Claims

1. The integrated drying, cleaning and etching equipment for the lead frame etching production line includes a drying mechanism, a cleaning mechanism and an etching mechanism, characterized in that: The drying mechanism comprises a drying chamber, the drying chamber is provided with a drying channel for progressively conveying the lead frame and an inlet and outlet for the lead frame to pass through, a drying assembly for drying the lead frame is provided along the drying channel, the drying assembly comprises a plurality of drying boxes arranged at intervals along the length direction of the drying channel, the drying box is formed with an air outlet facing the lead frame, the drying channel is provided with a mounting piece along the length direction thereof, and the drying box is provided with a rotating adjustment piece rotatably connected to the mounting piece; The cleaning mechanism is connected to a film stripping cylinder mechanism, which includes a rotatable film stripping cylinder assembly, which includes a drum and a rotating driving member for driving the drum to rotate, the drum wall is a mesh structure, one end of the drum is formed with a liquid inlet, and the other end is coaxially formed with a discharge port, a centrifugal channel for the film stripping liquid to pass through is formed between the liquid inlet and the discharge port, and the diameter of the centrifugal channel increases continuously from the liquid inlet to the discharge port; The etching mechanism includes an etching box, the etching box is provided with a through port for the lead frame to enter and exit and an etching channel for conveying the lead frame forward, an etching assembly for spraying liquid through the lead frame is arranged along the etching channel, the etching assembly includes a support member and a moving driving member for driving the support member to move back and forth, and the support member is equipped with a plurality of spray heads that can spray liquid toward the lead frame; The drying channel includes a drying conveying plate arranged along the length direction of the drying chamber, and the drying conveying plate is installed with a plurality of drying conveying rollers arranged at intervals to support and convey the lead frame; the drying components are respectively arranged above and below the drying channel; the mounting parts include side support bars with adjustable height, a first adjusting rod longitudinally installed in the drying channel, the side support bar is penetrated by a second adjusting rod, and the first adjusting rod and the second adjusting rod are respectively connected with adjusting columns; one end of the adjusting column is connected to the side support bar of another drying component, and an adjusting seat and a first adjusting hole cooperating with the first adjusting rod are formed on the top of the adjusting column, and a second adjusting hole cooperating with the second adjusting rod is formed on the adjusting seat.

2. The drying, cleaning and etching integrated equipment for the lead frame etching production line according to claim 1, characterized in that: The rotation adjustment part includes a connecting block formed on the side of the drying box, the connecting block is embedded with a rotating shaft, one end of the rotating shaft is installed on the side support bar, and the side support bar is provided with a fastener for loosely and tightly installing the rotating shaft; the fastener includes a top pressing block, and the fitting surfaces of the top pressing block and the side support bar are respectively formed with semicircular grooves for inserting the rotating shaft, wherein the top pressing block is penetrated by a loosening screw connected to the side support bar; the cross-section of the connecting block is elliptical or polygonal, and one end of the rotating shaft is formed with an interlocking groove adapted to the cross-sectional shape of the connecting block.

3. The drying, cleaning and etching integrated equipment for the lead frame etching production line according to claim 1, characterized in that: The film stripping cylinder assembly also includes a support bracket for installing the roller, a support guide wheel that rolls with the roller is installed at the bottom of the support bracket, and the roller is installed with an outer ring sleeve that cooperates with the support guide wheel; the outer ring sleeves are respectively nested at both ends of the roller, and the roller is also nested with multiple fixed sleeves located between the two outer ring sleeves, and the outer ring sleeve and the inner ring wall of the fixed sleeve are respectively integrally connected with the outer ring wall of the roller.

4. The drying, cleaning and etching integrated equipment for the lead frame etching production line according to claim 3, characterized in that: The outer diameters of the outer ring sleeve and the fixed sleeve are the same, and connecting columns that pass through the fixed sleeves are installed between the two outer ring sleeves; guide wheel support seats that are laterally aligned with each other are installed at the bottom of the support bracket, and the guide wheel support seats are installed with a rotating shaft for the support guide wheel to rotate; wherein limiting disks are coaxially installed on the two end surfaces of the support guide wheel close to the discharge port, and the outer diameter of the limiting disk is larger than the outer diameter of the support guide wheel, and the outer ring sleeve close to the discharge port rolls in cooperation with the support guide wheel installed with the limiting disk.

5. The drying, cleaning and etching integrated equipment for the lead frame etching production line according to claim 4, characterized in that: The rotating drive member includes a gear ring fixedly nested in the drum, the gear ring is coaxially mounted on an outer ring sleeve close to the liquid inlet, a support bracket is mounted with a driving motor, a driving end of the driving motor is mounted with a driving gear meshing with the gear ring; the support bracket is mounted with a filter cover, a filter box is mounted at the bottom of the filter cover, and a filter channel connected to the filter box is formed at the bottom of the filter cover; the support bracket is arranged with a spray assembly along the axial direction of the drum, the spray assembly includes a spray pipe, and a plurality of flushing nozzles are arranged along the length direction of the spray pipe; the film stripping cylinder mechanism also includes a waste collection cylinder arranged beside the film stripping cylinder assembly, and the solids on the drum are discharged into the waste collection cylinder through the discharge port.

6. The drying, cleaning and etching integrated equipment for the lead frame etching production line according to claim 1, characterized in that: The support member includes a support frame and a guide plate for the support frame to slide, a plurality of bottom spray tubes are arranged on the support frame, and each bottom spray tube is equipped with a plurality of the spray heads; the guide plate is arranged perpendicular to the forward direction of the lead frame, a sliding channel is opened along its length direction, and the support frame is equipped with a guide rolling wheel that rolls with the sliding channel.

7. The integrated drying, cleaning and etching equipment for the lead frame etching production line according to claim 6, characterized in that: The movable driving member includes a rotatable driving shaft, an eccentric wheel is installed on the driving shaft, a crank member is nested in the eccentric wheel, and one end of the crank member is connected to the support frame; the eccentric wheel is provided with an eccentric hole for inserting the driving shaft, and the crank member includes a crank block, and the crank block is formed with a driving groove for installing the eccentric wheel, and the eccentric wheel and the driving groove are in rolling cooperation; the inner ring wall of the driving groove is provided with a plurality of cam balls in rolling cooperation with the eccentric wheel, and a shielding cover for folding the cam balls is installed on the top of the driving groove, and a connecting shaft is installed at one end of the crank block, and one end of the connecting shaft is rotatably installed on the support frame.

8. The integrated drying, cleaning and etching equipment for the lead frame etching production line according to claim 7, characterized in that: The support members of the etching assembly are respectively arranged above and below the etching channel, and the support frame is also equipped with multiple top liquid pipes, which are arranged perpendicular to the bottom injection pipes and are connected to the bottom injection pipes; the etching channel includes an etching conveying plate arranged along the length direction of the etching box, and the etching conveying plate is provided with mounting structures at intervals along its length direction, and the mounting structure is detachably arranged with etching conveying rollers, and at least one of the mounting structures is equipped with two etching conveying rollers for roller-pressing and conveying the lead frame.

9. The drying, cleaning and etching integrated equipment for the lead frame etching production line according to claim 1, characterized in that: The drying channel and the etching channel are aligned in the advancing direction of the lead frame, and the cleaning mechanism is arranged between the drying mechanism and the etching mechanism.

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