CN114171487B - Surface treatment device for integrated circuit lead frame - Google Patents
Surface treatment device for integrated circuit lead frame Download PDFInfo
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- CN114171487B CN114171487B CN202111476037.8A CN202111476037A CN114171487B CN 114171487 B CN114171487 B CN 114171487B CN 202111476037 A CN202111476037 A CN 202111476037A CN 114171487 B CN114171487 B CN 114171487B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/48—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor
- H01L23/488—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor consisting of soldered or bonded constructions
- H01L23/495—Lead-frames or other flat leads
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D36/00—Filter circuits or combinations of filters with other separating devices
- B01D36/02—Combinations of filters of different kinds
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Abstract
The invention relates to the technical field of surface treatment of lead frames, in particular to a surface treatment device for an integrated circuit lead frame, which comprises a shell, wherein spray washing mechanisms for spray washing the surface of the lead frame are symmetrically arranged on two sides of the shell, a conveying mechanism for clamping the lead frame to move in the shell is arranged on the inner wall of the shell, a guide plate is fixed on the inner wall of the shell, the top surface of the guide plate is inclined, a communicating groove is formed in the lowest position of the shell, a draining tank is fixed on the outer wall of the shell, the draining tank is communicated with the inner part of the shell through the communicating groove, a filtering port is formed in the position, close to the draining tank, of the top surface of the guide plate, and a first filtering net is fixed in the filtering port; this scheme sprays liquid medicine on to the lead frame through spray rinsing mechanism to in time filter liquid medicine, prevent that impurity from being stained with and glue on the surface of lead frame, be favorable to follow-up processing to the lead frame.
Description
Technical Field
The invention relates to the field of surface treatment of lead frames, in particular to a surface treatment device for lead frames of integrated circuits.
Background
The lead frame is used as a chip carrier of an integrated circuit, is a key structural member for realizing the electrical connection between a leading-out end of an internal circuit of a chip and an external lead by means of bonding materials (gold wires, aluminum wires and copper wires) to form an electrical circuit, plays a role of a bridge connected with an external lead, needs to be used in most semiconductor integrated blocks and is an important basic material in the electronic information industry.
The prior art discloses partial invention patents related to surface treatment of lead frames, and Chinese patent with application number 201711365801.8, and discloses a device for surface treatment of lead frames, which comprises a feeding mechanism, a receiving mechanism and a plurality of surface treatment mechanisms arranged between the feeding mechanism and the receiving mechanism in sequence; the feeding mechanism comprises a feeding rack, a feeding disc and a plurality of feeding stretching rollers, wherein the feeding disc and the plurality of feeding stretching rollers are rotatably arranged on the feeding rack through vertically arranged shafts; the feeding disc and the shaft of at least one feeding stretching roller are in transmission connection with a motor; the receiving mechanism comprises a receiving rack, a receiving disc and a plurality of receiving stretching rollers, wherein the receiving disc and the receiving stretching rollers are rotatably arranged on the receiving rack through vertically arranged shafts; the material receiving plate and the shaft of at least one material receiving stretching roller are in transmission connection with the motor; the surface treatment mechanisms are sequentially connected end to end, two ends of each surface treatment mechanism are provided with long and narrow openings which are formed in the vertical direction, and the openings at the two ends of all the surface treatment mechanisms are connected into a straight line.
In the prior art, most lead frame surface treatment devices adopt soaking and spray washing modes to treat the surfaces of lead frames, impurities in liquid medicine are difficult to clean in time in the treatment process, so that the impurities are easy to stick to the surfaces of the lead frames in the treatment process of the lead frames, and the subsequent processing is not facilitated.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a surface treatment device for an integrated circuit lead frame.
In order to achieve the above purposes, the technical scheme adopted by the invention is as follows: a surface treatment device for an integrated circuit lead frame comprises a shell, wherein spray washing mechanisms for spray washing the surface of the lead frame are symmetrically arranged on two sides of the shell, a conveying mechanism for clamping the lead frame to move in the shell is arranged on the inner wall of the shell, a guide plate is fixed on the inner wall of the shell, the top surface of the guide plate is inclined, a communicating groove is formed in the position, at the lowest position, of the shell, of the guide plate, a draining tank is fixed on the outer wall of the shell, the draining tank is communicated with the inner part of the shell through the communicating groove, a filtering opening is formed in the position, close to the draining tank, of the top surface of the guide plate, a first filtering net is fixed inside the filtering opening, a blocking mechanism for blocking impurities on the guide plate is arranged in the communicating groove, and a cleaning mechanism for cleaning the impurities on the guide plate into the draining tank is arranged on the guide plate, a draining mechanism for draining impurities is arranged in the draining tank; when the lead frame surface treatment device works, the surface of the lead frame is treated by adopting a soaking mode mostly, impurities in liquid medicine are difficult to clean in time in the treatment process, so that the impurities are easy to stick on the surface of the lead frame in the treatment process of the lead frame and are not beneficial to subsequent processing, the technical scheme can solve the problems, and the lead frame surface treatment device has the specific working mode that the lead frame is clamped by a conveying mechanism and moves in a shell, a barrel spray washing mechanism sprays the liquid medicine on the lead frame in the moving process, the surface of the lead frame is treated, the liquid medicine directly falls onto the top surface of a guide plate after flowing down from the lead frame, flows to a communication groove along the top surface of the guide plate, enters the inner bottom surface of the shell after passing through a first filter screen, and is filtered by the first filter screen, filtered liquid medicine is sprayed out by spray rinsing mechanism again, through in time filtering liquid medicine, prevent that impurity from being stained with and glue on the surface of lead frame, be favorable to follow-up processing to the lead frame, filterable impurity is piled up on the top surface of guide board and first filter screen, prevent when discharge is great through setting up separation mechanism, inside rivers directly rush into waterlogging caused by excessive rainfall case, inside clearance gets into the waterlogging caused by excessive rainfall case with impurity through clearance mechanism, carry out dry waterlogging caused by excessive rainfall through the impurity of waterlogging caused by excessive rainfall mechanism to the waterlogging caused by excessive rainfall incasement portion, be favorable to saving liquid medicine.
Preferably, the spray washing mechanism comprises a water pump and water storage tanks, the water storage tanks are symmetrically fixed on the inner wall of the shell, a plurality of spray heads are fixedly communicated with the inside of the water storage tanks, the water pump is fixed on the inner bottom surface of the shell, the water inlet end of the water pump is communicated with the inside of the shell, and the water outlet end of the water pump is communicated with the inside of the water storage tanks through a guide pipe; during operation absorbs the inside filterable liquid medicine of casing through the water pump to with inside liquid medicine input water storage box, spout liquid medicine to the lead frame through the shower nozzle, handle the lead frame surface, be favorable to carrying out make full use of to liquid medicine, save liquid medicine.
Preferably, the conveying mechanism comprises two guide rail bars, sliding plates are connected to opposite sides of the two guide rail bars in a sliding manner along the length direction, electric push rods are fixed to opposite sides of the two sliding plates, elastic clamping plates are fixed to ends of piston rods of the electric push rods, a T-shaped groove is formed in the top surface of one of the guide rail bars, a T-shaped block is connected to the inside of the T-shaped groove in a sliding manner, one side of the T-shaped block is fixedly connected to the sliding plate on the same side, a motor is fixed to the other side of the T-shaped block, a third gear is fixed to an output shaft of the motor after penetrating through the T-shaped block, a first rack is meshed with one side of the third gear, and the first rack is fixed to the side wall of the guide rail bar on the same side; the during operation promotes the grip block through electric putter and carries out the centre gripping to the lead frame, power through the switch-on motor, output shaft through the motor drives third gear revolve, thereby make the third gear remove in one side of first rack, it slides at T type inslot portion to drive T type piece, T type piece passes through the sliding plate and drives the grip block and remove on the guide rail strip, thereby make the lead frame remove inside the casing, remove inside the casing through driving the lead frame, increase the contact opportunity of lead frame and liquid medicine, and be favorable to making each position of lead frame all contact with liquid medicine, increase the contact opportunity.
Preferably, the cleaning mechanism comprises a scraping plate and sliding chutes, the sliding chutes are symmetrically arranged on the inner wall of the shell, the sliding chutes are parallel to the guide plate, sliding blocks are slidably connected inside the sliding chutes, the sliding blocks and the inner wall of the sliding chutes are in friction contact to form opposite friction resistance, connecting rods are fixed on opposite sides of the two sliding blocks, the scraping plate is arranged between the two sliding blocks, guide grooves are arranged on two sides of the scraping plate, the connecting rods are slidably arranged inside the guide grooves, the guide grooves comprise inclined grooves and flat grooves, one end of each inclined groove close to the draining tank is higher than one end of each inclined groove far away from the draining tank, the two flat grooves are respectively communicated with two ends of each inclined groove, the flat grooves are parallel to the guide plate, two telescopic rods are fixed on the top of the scraping plate, and are respectively fixed on the corresponding sliding plates, the bottom surface of the scraper is in close contact with the top surface of the guide plate; when in work, the sliding plate drives the two telescopic rods to move, the telescopic rods drive the scraper to move along the sliding chute, when the scraper scrapes impurities, under the action of frictional resistance, the connecting rod can firstly move in the inclined groove to the high flat groove to push down the scraper, then the scraper is driven continuously, the movement of the scraper can overcome the frictional resistance to move continuously, so that the scraper is always attached to the top surface of the guide plate, under the action of frictional resistance, the connecting rod slides relatively in the chute until the connecting rod moves to a lower flat groove to lift the scraper, in the slip in-process for the scraper blade breaks away from with the top surface of guide board, prevents that the scraper blade from contacting with the guide board at the in-process that resets, and the condition that causes the impurity of guide board top surface to be anti-scraped takes place, is favorable to making the scraper blade scrape impurity to waterlogging caused by excessive rainfall case position on the guide board all the time.
Preferably, the blocking mechanism comprises a water baffle which is arranged inside the communicating groove, the water baffle is connected to the side wall inside the draining tank in a sliding manner along the inclined extending direction of the guide plate, and a spring is jointly fixed between the water baffle and the inner wall of the draining tank; the during operation carries out surface treatment's in-process to the lead frame, blocks liquid medicine through the breakwater, prevents when discharge is great that rivers directly rush into waterlogging caused by excessive rainfall incasement portion's impurity is watered the condition emergence, scrapes when moving breakwater one side at the scraper blade, under the extrusion of scraper blade, promotes the breakwater and breaks away from the intercommunication groove to make impurity can in time pass inside the intercommunication groove falls into the waterlogging caused by excessive rainfall case.
Preferably, a dredging mechanism for dredging the first filter screen is arranged on one side of the water baffle, the dredging mechanism comprises a fixed rod, a second rack and a pressing block, the fixed rod is fixed on the side wall of the water baffle, one end of the fixed rod, which is far away from the water baffle, is rotatably connected with a connecting shaft, the connecting shaft is fixedly connected with rotating rods, mounting grooves are formed in the bottom surfaces of the two rotating rods, a first gear and a second gear are rotatably connected in the mounting grooves, the first gear and the second gear are meshed with each other, a dredging roll is rotatably connected between the two rotating rods, two ends of the dredging roll are coaxially fixed with the two first gears respectively, a turnover mechanism is arranged on the rotating rods and used for maintaining an interval between the dredging roll and a guide plate when the dredging roll is not pressed by external force, and the pressing block is fixed on the outer wall of the scraper, the side, close to the dredging roller, of the pressing block is provided with an inclined surface, the second rack is fixed on the top surface of the guide plate, when the pressing block moves to the dredging roller to press the dredging roller downwards, the second gear is meshed with the second rack, and the dredging roller is in contact with the guide plate; when the lead frame is sprayed with liquid medicine to be treated, the dredging roller is separated from the guide plate under the action of the turnover mechanism, so that impurities can flow onto the top surface of the filter screen, the blocking of the dredging roller to the impurities is prevented, when the scraper moves to one side of the dredging roller, the dredging roller is pressed downwards through the inclined surface of the pressing block, the first gear is meshed with the second rack, the dredging roller is in contact with the inclined surface, then the scraper continues to move to one side of the dredging roller, the second gear rotates on the second rack, the first gear and the dredging roller are driven to rotate, the dredging roller rolls on the first filter screen, the first filter screen is timely cleaned in a rolling mode, and the first filter screen is prevented from being blocked by the impurities.
Preferably, the turnover mechanism comprises a first torsion spring, the first torsion spring is sleeved on the connecting shaft, and two ends of the first torsion spring are respectively fixed on the fixing rod and the connecting shaft; when the lead frame is sprayed with liquid medicine, one end of the rotating rod is driven to tilt upwards under the action of the first torsion spring, so that the dredging roller is separated from the guide plate, impurities can flow onto the top surface of the first filter screen, and the situation that the dredging roller blocks the impurities is prevented.
Preferably, the draining mechanism comprises two belt pulleys, a draining tank, an inclined block, a guide strip and a discharge tank, the guide strip is fixed on the inner wall of the draining tank below the communicating tank, the discharge tank is arranged on the side wall of the draining tank, the two belt pulleys are respectively fixed on the inner wall of the draining tank and the inner wall of the discharge tank, a filter belt is sleeved on the two belt pulleys, the filter belt comprises two conveying belts and a second filter screen, the two conveying belts fix the two sides of the second filter screen, a plurality of blocking blocks are fixed on the top surface of the filter belt at equal intervals, a plurality of turnover plates matched with the water retaining plates are fixed on one sides of the blocking blocks, rotating shafts are fixed on the two sides of the turnover plates, the rotating shafts are rotatably connected on the conveying belts, a second torsion spring is sleeved on the rotating shafts, and one end of the second torsion spring is fixed on the conveying belts, the other end of the second torsion spring is fixed on the turnover plate, the draining groove is formed in the inner walls of the shell and the draining box and is communicated with the shell and the draining box, and the inclined block is fixed on the inner bottom surface of the draining box; during operation, impurity gets into the inside back of waterlogging caused by excessive rainfall case, drop on the top surface of filter belt, remaining liquid medicine passes the filter belt and gets into waterlogging caused by excessive rainfall case bottom in the impurity, and pass from the waterlogging caused by excessive rainfall inslot along the inclined plane of slope piece inside getting into the casing, further filter the waterlogging caused by excessive rainfall case remaining liquid medicine in to the impurity and drip futilely through setting up, be favorable to reducing the use cost of liquid medicine, further collect the completion back in liquid medicine to in the impurity, promote the inside back of waterlogging caused by excessive rainfall incasement portion with the breakwater through the scraper blade, promote the returning face plate through the breakwater, the returning face plate promotes to block the piece and removes, thereby drive the filter belt and remove, the impurity that will drip dry liquid medicine takes out the waterlogging caused by excessive rainfall case from the blown down tank, be favorable to in time collecting impurity, be convenient for follow-up carries out centralized processing to impurity.
Compared with the prior art, the invention has the following beneficial effects:
one, carry out the centre gripping and remove inside the casing through conveying mechanism to the lead frame, the in-process bucket spray rinsing mechanism that removes sprays liquid medicine on to the lead frame, handle the surface of lead frame, liquid medicine flows down the back from the lead frame, directly fall on the guide board top surface, and flow to the intercommunication groove along the guide board top surface, enter into the casing after passing first filter screen on the bottom surface, filter liquid medicine through first filter screen, liquid medicine after the filtration is sprayed rinsing mechanism blowout again, through in time filtering liquid medicine, prevent that impurity from being stained with and glue on the surface of lead frame, be favorable to follow-up processing to the lead frame.
Two, filterable impurity is piled up on the top surface of guide board and first filter screen, prevents through setting up separation mechanism when discharge is great, inside rivers directly rush into waterlogging caused by excessive rainfall case, through inside clearance mechanism gets into waterlogging caused by excessive rainfall case with impurity clearance, carries out dry waterlogging caused by excessive rainfall through the impurity of waterlogging caused by excessive rainfall mechanism to waterlogging caused by excessive rainfall incasement portion, is favorable to saving liquid medicine.
Thirdly, the sliding plate drives the two telescopic rods to move, the telescopic rods drive the scraper to move along the direction of the chute, when the scraper scrapes impurities, under the action of frictional resistance, the connecting rod can firstly move in the inclined groove to the high flat groove to push down the scraper, then the scraper is driven continuously, the movement of the scraper overcomes the frictional resistance to move continuously, so that the scraper is always attached to the top surface of the guide plate, under the action of frictional resistance, the connecting rod relatively slides in the chute until the connecting rod moves to a lower flat groove to lift the scraper, in the slip in-process for the scraper blade breaks away from with the top surface of guide board, prevents that the scraper blade from contacting with the guide board at the in-process that resets, and the condition that causes the impurity of guide board top surface to be anti-scraped takes place, is favorable to making the scraper blade scrape impurity to waterlogging caused by excessive rainfall case position on the guide board all the time.
Fourthly, carrying out surface treatment's in-process to the lead frame, blockking liquid medicine through the breakwater, prevent when discharge is great that rivers directly rush into the waterlogging caused by excessive rainfall incasement portion the impurity by the condition emergence of watering, when the scraper blade is scraped and is moved breakwater one side, under the extrusion of scraper blade, promote the breakwater and break away from the intercommunication groove to it is inside to make impurity can in time pass the intercommunication groove and fall into the waterlogging caused by excessive rainfall case.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic diagram of the structure at A in FIG. 1 according to the present invention;
FIG. 3 is a schematic structural view of a first overall cross-section of the present invention;
FIG. 4 is a schematic view of the connection structure between the scraper and the slider according to the present invention;
FIG. 5 is a second schematic structural view (with the pressing block removed) taken in full section according to the present invention;
FIG. 6 is a schematic diagram of the structure at B in FIG. 5 according to the present invention;
FIG. 7 is a schematic view of the structure of FIG. 6 at C in accordance with the present invention;
FIG. 8 is a schematic diagram of the structure of FIG. 6 at D in accordance with the present invention;
fig. 9 is a third overall cross-sectional rear structure diagram of the present invention.
In the figure: 1. a housing; 2. a guide plate; 3. a communicating groove; 4. a draining tank; 5. a filter port; 6. a first filter screen; 7. a water pump; 8. a water storage tank; 9. a spray head; 10. a guide rail bar; 11. a sliding plate; 12. an electric push rod; 13. a clamping plate; 14. a T-shaped groove; 15. a T-shaped block; 16. a motor; 17. a third gear; 18. a first rack; 19. a squeegee; 20. a chute; 21. a slider; 22. a connecting rod; 23. a guide groove; 24. a chute; 25. flattening the groove; 26. a telescopic rod; 27. a water baffle; 28. a spring; 29. fixing the rod; 30. a second rack; 31. pressing the block; 32. a connecting shaft; 33. rotating the rod; 34. mounting grooves; 35. a first gear; 36. a second gear; 37. dredging the roller; 38. a first torsion spring; 39. a belt pulley; 40. a draining tank; 41. an inclined block; 42. a guide strip; 43. a discharge chute; 44. a filter belt; 45. a conveyor belt; 46. a second filter screen; 47. a blocking block; 48. a turnover plate; 49. a rotating shaft; 50. a second torsion spring.
Detailed Description
The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art.
As shown in fig. 1 to 9, a surface treatment device for an integrated circuit lead frame comprises a housing 1, wherein spraying mechanisms for spraying the surface of the lead frame are symmetrically arranged on two sides of the housing 1, a conveying mechanism for clamping the lead frame to move in the housing 1 is arranged on the inner wall of the housing 1, a guide plate 2 is fixed on the inner wall of the housing 1, the top surface of the guide plate 2 is inclined, a communicating groove 3 is arranged at the lowest position of the guide plate 2 of the housing 1, a draining tank 4 is fixed on the outer wall of the housing 1, the draining tank 4 is communicated with the interior of the housing 1 through the communicating groove 3, a filtering port 5 is arranged at the position, close to the draining tank 4, of the top surface of the guide plate 2, a first filtering net 6 is fixed in the filtering port 5, a blocking mechanism for blocking impurities on the guide plate 2 is arranged in the communicating groove 3, a cleaning mechanism for cleaning the impurities on the guide plate 2 into the draining tank 4 is arranged on the guide plate 2, a draining mechanism for draining impurities is arranged in the draining tank 4; during operation, the lead frame surface treatment device in the prior art mostly adopts a soaking mode to treat the surface of the lead frame, impurities in liquid medicine are difficult to clean in time in the treatment process, so that the impurities are easy to stick on the surface of the lead frame in the treatment process of the lead frame and are not beneficial to subsequent processing, the technical scheme can solve the problems, and the specific working mode is as follows, the lead frame is clamped by a conveying mechanism and moves in the shell 1, the bucket spraying mechanism sprays the liquid medicine on the lead frame in the moving process, the surface of the lead frame is treated, the liquid medicine directly falls onto the top surface of the guide plate 2 after flowing down from the lead frame, flows to the communicating groove 3 along the top surface of the guide plate 2, enters the inner bottom surface of the shell 1 after passing through the first filter screen 6, and is filtered by the first filter screen 6, filtered liquid medicine is sprayed out by spray rinsing mechanism again, through in time filtering liquid medicine, prevent that impurity from being stained with and glue on the surface of lead frame, be favorable to follow-up processing to the lead frame, filterable impurity is piled up on the top surface of guide board 2 and first filter screen 6, prevent when discharge is great through setting up separation mechanism, rivers directly rush into inside waterlogging caused by excessive rainfall tank 4, get into inside waterlogging caused by excessive rainfall tank 4 with impurity clearance through clearance mechanism, carry out dry waterlogging caused by excessive rainfall through the impurity of waterlogging caused by excessive rainfall mechanism to inside waterlogging caused by excessive rainfall tank 4, be favorable to saving liquid medicine.
As a further embodiment of the invention, the spray washing mechanism comprises a water pump 7 and a water storage tank 8, the water storage tank 8 is symmetrically fixed on the inner wall of the shell 1, the inside of the water storage tank 8 is fixedly communicated with a plurality of spray heads 9, the water pump 7 is fixed on the inner bottom surface of the shell 1, the water inlet end of the water pump 7 is communicated with the inside of the shell 1, and the water outlet end of the water pump 7 is communicated with the inside of the water storage tank 8 through a guide pipe; during operation, absorb the inside liquid medicine after filtering of casing 1 through water pump 7 to with inside liquid medicine input water storage box 8, spout liquid medicine to the lead frame through shower nozzle 9, handle the lead frame surface, be favorable to carrying out make full use of to liquid medicine, save liquid medicine.
As a further embodiment of the present invention, the conveying mechanism includes two guide rail bars 10, opposite sides of the two guide rail bars 10 are both connected with sliding plates 11 in a sliding manner along a length direction, opposite sides of the two sliding plates 11 are both fixed with electric push rods 12, ends of piston rods of the electric push rods 12 are both fixed with elastic clamping plates 13, a T-shaped groove 14 is opened on a top surface of one guide rail bar 10, an inside of the T-shaped groove 14 is connected with a T-shaped block 15 in a sliding manner, one side of the T-shaped block 15 is fixedly connected with the sliding plate 11 on the same side, the other side of the T-shaped block 15 is fixed with a motor 16, an output shaft of the motor 16 penetrates through the T-shaped block 15 and is fixed with a third gear 17, one side of the third gear 17 is engaged with a first rack 18, and the first rack 18 is fixed on a side wall of the guide rail bar 10 on the same side; the during operation, promote grip block 13 through electric putter 12 and carry out the centre gripping to the lead frame, power through switch-on motor 16, output shaft through motor 16 drives third gear 17 and rotates, thereby make third gear 17 remove in one side of first rack 18, it slides at T type groove 14 inside to drive T type piece 15, T type piece 15 drives grip block 13 through sliding plate 11 and moves on guide rail strip 10, thereby make the lead frame remove 1 inside casing, through driving lead frame and removing 1 inside casing, increase the contact opportunity of lead frame and liquid medicine, and be favorable to making each position of lead frame all contact with liquid medicine, increase the contact opportunity.
As a further embodiment of the invention, the cleaning mechanism comprises a scraping plate 19 and a sliding chute 20, the sliding chute 20 is symmetrically arranged on the inner wall of the shell 1, the sliding chute 20 is parallel to the guide plate 2, the sliding chute 20 is internally and slidably connected with a sliding block 21, the sliding block 21 and the inner wall of the sliding chute are in friction contact to form relative friction resistance, the two sliding blocks 21 are respectively fixed with a connecting rod 22 on opposite sides, the scraping plate 19 is arranged between the two sliding blocks 21, the two sides of the scraping plate 19 are respectively provided with a guide groove 23, the connecting rod 22 is slidably arranged in the guide groove 23, the guide groove 23 comprises a chute 24 and a flat groove 25, one end of the chute 24 close to the draining water tank 4 is higher than one end far away from the draining water tank 4, the two flat grooves 25 are respectively communicated and arranged at two ends of the chute 24, the flat grooves 25 are parallel to the guide plate 2, the top of the scraping plate 19 is fixed with two telescopic rods 26, the two telescopic rods 26 are respectively fixed on the corresponding sliding plates 11, the bottom surface of the scraper 19 is in close contact with the top surface of the guide plate 2; when the device works, the sliding plate 11 drives the two telescopic rods 26 to move, the telescopic rods 26 drive the scraper 19 to move along the chute 20, when the scraper 19 scrapes impurities, under the action of frictional resistance, the connecting rod 22 moves into the high flat groove 25 in the inclined groove 24 to push the scraper 19 downwards, then, the driving is continued, and the movement of the scraper 19 is continued against the frictional resistance, so that the scraper 19 is always attached to the top surface of the guide plate 2, and when the scraper 19 is reset, under the action of frictional resistance, the connecting rod 22 slides relatively inside the inclined groove 24 until it moves into the lower flat groove 25, lifting the scraper 19, in the slip in-process for scraper blade 19 breaks away from with the top surface of guide board 2, prevents that scraper blade 19 from contacting with guide board 2 at the in-process that resets, and the condition that causes the impurity of guide board 2 top surface to be anti-scraped takes place, is favorable to making scraper blade 19 to scrape impurity to waterlogging caused by excessive rainfall case 4 position all the time on guide board 2.
As a further embodiment of the present invention, the blocking mechanism comprises a water baffle 27, the water baffle 27 is arranged inside the communication groove 3, the water baffle 27 is slidably connected to the side wall inside the draining tank 4 along the inclined extending direction of the guide plate 2, and a spring 28 is jointly fixed between the water baffle 27 and the inner wall of the draining tank 4; the during operation carries out surface treatment's in-process to the lead frame, blocks liquid medicine through breakwater 27, prevents when discharge is great, and rivers directly rush into waterlogging caused by excessive rainfall 4 inside, and the condition that causes the inside impurity of waterlogging caused by excessive rainfall 4 to be watered takes place, scrapes at scraper blade 19 when scraping 27 one side of breakwater, under scraper blade 19's extrusion, promotes breakwater 27 and breaks away from intercommunication groove 3 to make impurity can in time pass intercommunication groove 3 and fall into inside waterlogging caused by excessive rainfall 4.
As a further embodiment of the present invention, a dredging mechanism for dredging the first filter screen 6 is disposed on one side of the water baffle 27, the dredging mechanism includes a fixing rod 29, a second rack 30, and a pressing block 31, the fixing rod 29 is fixed on a side wall of the water baffle 27, one end of the fixing rod 29 away from the water baffle 27 is rotatably connected with a connecting shaft 32, a rotating rod 33 is fixedly connected with the connecting shaft 32, bottom surfaces of the two rotating rods 33 are respectively provided with a mounting groove 34, a first gear 35 and a second gear 36 are rotatably connected inside the mounting groove 34, the first gear 35 is engaged with the second gear 36, a dredging roller 37 is rotatably connected between the two rotating rods 33, two ends of the dredging roller 37 are respectively coaxially fixed with the two first gears 35, a turnover mechanism is disposed on the rotating rod 33, and the turnover mechanism is used for maintaining a gap between the dredging roller 37 and the guide plate 2 when the dredging roller is not pressed by an external force, the pressing block 31 is fixed on the outer wall of the scraper 19, one side of the pressing block 31 close to the dredging roller 37 is provided with an inclined surface, the second rack 30 is fixed on the top surface of the guide plate 2, when the pressing block 31 moves to the dredging roller 37 to press the dredging roller 37 downwards, the second gear 36 is meshed with the second rack 30, and the dredging roller 37 is contacted with the guide plate 2; when the lead frame is sprayed with the liquid medicine, under the action of the turnover mechanism, the dredging roller 37 is separated from the guide plate 2, so that the impurities can flow onto the top surface of the filter screen, and the blockage of the dredging roller 37 by the impurities can be prevented, when the scraper 19 moves to one side of the dredging roller 37, the dredging roller 37 is pressed downwards by the inclined surface of the pressing block 31, so that the first gear 35 is meshed with the second rack 30, the dredging roller 37 is in contact with the inclined surface, then the scraper 19 continues to move to one side of the dredging roller 37, the second gear 36 rotates on the second rack 30, the first gear 35 and the dredging roller 37 are driven to rotate, the dredging roller 37 rolls on the first filter screen 6, the first filter screen 6 is cleaned in time, and the impurities can be prevented from blocking the first filter screen 6.
As a further embodiment of the present invention, the turnover mechanism includes a first torsion spring 38, the first torsion spring 38 is sleeved on the connecting shaft 32, and two ends of the first torsion spring 38 are respectively fixed on the fixing rod 29 and the connecting shaft 32; during operation, when carrying out the liquid medicine that spouts to the lead frame and handle, under the effect of first torsion spring 38, the one end that drives dwang 33 upwarps for dredge roller 37 breaks away from with guide plate 2, is favorable to making on impurity flows the first filter screen 6 top surface, prevents that the condition that dredge roller 37 blocks impurity from taking place.
As a further embodiment of the invention, the draining mechanism comprises two belt pulleys 39, a draining tank 40, an inclined block 41, a guide strip 42 and a discharge tank 43, the guide strip 42 is fixed on the inner wall of the draining tank 4 below the communicating tank 3, the discharge tank 43 is arranged on the side wall of the draining tank 4, the two belt pulleys 39 are respectively fixed on the inner wall of the draining tank 4 and the inner wall of the discharge tank 43, a filter belt 44 is sleeved on the two belt pulleys 39 together, the filter belt 44 comprises two conveyer belts 45 and a second filter screen 46, the two conveyer belts 45 are fixed on two sides of the second filter screen 46, a plurality of blocking blocks 47 are fixed on the top surface of the filter belt 44 at equal intervals, a turning plate 48 matched with the water baffle 27 is fixed on one side of the plurality of blocking blocks 47, rotating shafts 49 are fixed on two sides of the turning plate 48, the rotating shafts 49 are rotatably connected on the conveyer belts 45, and second torsion springs 50 are sleeved on the rotating shafts 49, one end of a second torsion spring 50 is fixed on the conveying belt 45, the other end of the second torsion spring 50 is fixed on the turnover plate 48, the draining tank 40 is arranged on the inner walls of the shell 1 and the draining tank 4, the draining tank 40 communicates the shell 1 with the draining tank 4, and the inclined block 41 is fixed on the inner bottom surface of the draining tank 4; during operation, impurity gets into 4 inside backs of waterlogging caused by excessive rainfall case, drop to on the top surface of filter belt 44, remaining liquid medicine passes filter belt 44 and gets into 4 bottoms of waterlogging caused by excessive rainfall case in the impurity, and pass from waterlogging caused by excessive rainfall groove 40 along the inclined plane of slope piece 41 inside getting into casing 1, further filter the waterlogging caused by excessive rainfall case 4 remaining liquid medicine in to the impurity and drip futilely through setting up, be favorable to reducing the use cost of liquid medicine, further collect the completion back to liquid medicine in the impurity, promote the inside back of waterlogging caused by excessive rainfall case 4 through scraper blade 19 with breakwater 27, promote returning face plate 48 through breakwater 27, returning face plate 48 promotes and blocks 47 removal, thereby drive filter belt 44 and remove, the impurity that will drip dry liquid medicine takes out of waterlogging caused by excessive rainfall case 4 from blown down chute 43, be favorable to in time collecting impurity, be convenient for follow-up carries out centralized processing to impurity.
The working principle of the invention is as follows:
the lead frame is clamped by the conveying mechanism and moves in the shell 1, the barrel spraying mechanism sprays liquid medicine on the lead frame in the moving process, the surface of the lead frame is treated, the liquid medicine directly falls onto the top surface of the guide plate 2 after flowing down from the lead frame and flows to the communicating groove 3 along the top surface of the guide plate 2, the liquid medicine enters the inner bottom surface of the shell 1 after passing through the first filter screen 6, the liquid medicine is filtered by the first filter screen 6, the filtered liquid medicine is sprayed out by the spraying mechanism again, the liquid medicine is timely filtered, impurities are prevented from being adhered to the surface of the lead frame, the subsequent processing of the lead frame is facilitated, the filtered impurities are accumulated on the top surfaces of the guide plate 2 and the first filter screen 6, the water flow is prevented from directly rushing into the draining tank 4 by arranging the blocking mechanism when the water flow is large, the impurities are cleaned by the cleaning mechanism and enter the draining tank 4, carry out dry waterlogging caused by excessive rainfall and be discharged to the inside impurity of waterlogging caused by excessive rainfall case 4 through waterlogging caused by excessive rainfall mechanism, be favorable to saving liquid medicine.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined by the appended claims and their equivalents.
Claims (3)
1. A surface treatment device for integrated circuit lead frames, comprising a casing (1), characterized in that: the lead frame surface spray-washing machine is characterized in that spray-washing mechanisms used for spray-washing the lead frame surface are symmetrically arranged on two sides of the shell (1), a conveying mechanism used for clamping the lead frame to move inside the shell (1) is arranged on the inner wall of the shell (1), a guide plate (2) is fixed on the inner wall of the shell (1), the top surface of the guide plate (2) is inclined, a communicating groove (3) is formed in the position, located at the lowest position of the guide plate (2), of the shell (1), a draining tank (4) is fixed on the outer wall of the shell (1), the draining tank (4) is communicated with the inside of the shell (1) through the communicating groove (3), a filtering port (5) is formed in the position, close to the draining tank (4), of the top surface of the guide plate (2), a first filtering net (6) is fixed inside the filtering port (5), and a blocking mechanism used for blocking impurities on the guide plate (2) is arranged in the communicating groove (3), the guide plate (2) is provided with a cleaning mechanism for cleaning impurities on the guide plate (2) into the draining tank (4), and the draining tank (4) is internally provided with a draining mechanism for draining the impurities;
the conveying mechanism comprises two guide rail bars (10), the opposite sides of the two guide rail bars (10) are connected with sliding plates (11) in a sliding mode along the length direction, the opposite sides of the two sliding plates (11) are fixed with electric push rods (12), the tail ends of the piston rods of the electric push rods (12) are respectively fixed with an elastic clamping plate (13), a T-shaped groove (14) is formed in the top surface of one of the guide rail bars (10), a T-shaped block (15) is connected in the T-shaped groove (14) in a sliding manner, one side of the T-shaped block (15) is fixedly connected with the sliding plate (11) at the same side, a motor (16) is fixed on the other side of the T-shaped block (15), a third gear (17) is fixed after an output shaft of the motor (16) penetrates through the T-shaped block (15), a first rack (18) is meshed with one side of the third gear (17), and the first rack (18) is fixed on the side wall of the guide rail bar (10) on the same side;
the cleaning mechanism comprises a scraper blade (19) and a sliding groove (20), the sliding groove (20) is symmetrically formed in the inner wall of the shell (1), the sliding groove (20) is parallel to the guide plate (2), sliding blocks (21) are connected to the inner part of the sliding groove (20) in a sliding manner, the sliding blocks (21) and the inner wall of the sliding groove are in friction contact to form relative friction resistance, connecting rods (22) are fixed to the opposite sides of the two sliding blocks (21), the scraper blade (19) is arranged between the two sliding blocks (21), guide grooves (23) are formed in the two sides of the scraper blade (19), the connecting rods (22) are arranged in the guide grooves (23) in a sliding manner, each guide groove (23) comprises a chute (24) and a flat groove (25), one end, close to the draining tank (4), of each chute (24) is higher than one end, far away from the draining tank (4), of each chute (24), and the two flat grooves (25) are respectively communicated with the two ends of each chute (24), the flat groove (25) is parallel to the guide plate (2), two telescopic rods (26) are fixed to the top of the scraper (19), the two telescopic rods (26) are respectively fixed to the corresponding sliding plates (11), and the bottom surface of the scraper (19) is in close contact with the top surface of the guide plate (2);
the blocking mechanism comprises a water baffle (27), the water baffle (27) is arranged in the communicating groove (3), the water baffle (27) is connected to the side wall of the inner part of the water draining tank (4) in a sliding manner along the inclined extending direction of the guide plate (2), and a spring (28) is jointly fixed between the water baffle (27) and the inner wall of the water draining tank (4);
the filter screen dredging device is characterized in that a dredging mechanism used for dredging a first filter screen (6) is arranged on one side of the water baffle (27), the dredging mechanism comprises a fixing rod (29), a second rack (30) and a pressing block (31), the fixing rod (29) is fixed on the side wall of the water baffle (27), one end, far away from the water baffle (27), of the fixing rod (29) is rotatably connected with a connecting shaft (32), a rotating rod (33) is fixedly connected onto the connecting shaft (32), mounting grooves (34) are formed in the bottom surfaces of the two rotating rods (33), first gears (35) and second gears (36) are rotatably connected into the mounting grooves (34), the first gears (35) and the second gears (36) are meshed with each other, a dredging roller (37) is rotatably connected between the two rotating rods (33), and two ends of the dredging roller (37) are coaxially fixed with the two first gears (35) respectively, the rotating rod (33) is provided with a turnover mechanism, the turnover mechanism is used for maintaining a gap between the dredging roller (37) and the guide plate (2) when the dredging roller is not pressed by an external force, the pressing block (31) is fixed on the outer wall of the scraper (19), one side, close to the dredging roller (37), of the pressing block (31) is provided with an inclined surface, the second rack (30) is fixed on the top surface of the guide plate (2), when the pressing block (31) moves to the dredging roller (37) to press the dredging roller (37) downwards, the second gear (36) is meshed with the second rack (30), and the dredging roller (37) is in contact with the guide plate (2);
the turnover mechanism comprises a first torsion spring (38), the first torsion spring (38) is sleeved on the connecting shaft (32), and two ends of the first torsion spring (38) are respectively fixed on the fixing rod (29) and the connecting shaft (32).
2. The device of claim 1, wherein the device comprises: the spray rinsing mechanism comprises a water pump (7) and a water storage tank (8), wherein the water storage tank (8) is symmetrically fixed on the inner wall of the shell (1), the inside of the water storage tank (8) is fixedly communicated with a plurality of spray heads (9), the water pump (7) is fixed on the inner bottom surface of the shell (1), the water inlet end of the water pump (7) is communicated with the inside of the shell (1), and the water outlet end of the water pump (7) is communicated with the inside of the water storage tank (8) through a guide pipe.
3. The device of claim 1, wherein the device comprises: the draining mechanism comprises two belt pulleys (39), a draining tank (40), an inclined block (41), a guide strip (42) and a discharge chute (43), wherein the guide strip (42) is fixed on the inner wall of the draining tank (4) below the communicating groove (3), the discharge chute (43) is arranged on the side wall of the draining tank (4), the two belt pulleys (39) are respectively fixed on the inner wall of the draining tank (4) and the inner wall of the discharge chute (43), the two belt pulleys (39) are jointly sleeved with a filter belt (44), the filter belt (44) comprises two conveyor belts (45) and a second filter screen (46), the two conveyor belts (45) are used for fixing the two sides of the second filter screen (46), a plurality of blocking blocks (47) are fixed on the top surface of the filter belt (44) at equal intervals, and a plurality of overturning plates (48) matched with the water baffle plate (27) are fixed on one side of the blocking blocks (47), the both sides of returning face plate (48) all are fixed with axis of rotation (49), axis of rotation (49) are rotated and are connected on conveyer belt (45), and the cover is equipped with second torsional spring (50) on axis of rotation (49), the one end of second torsional spring (50) is fixed on conveyer belt (45), the other end of second torsional spring (50) is fixed on returning face plate (48), waterlogging caused by excessive rainfall groove (40) is seted up on the inner wall of casing (1) and waterlogging caused by excessive rainfall case (4), waterlogging caused by excessive rainfall groove (40) is with casing (1) and waterlogging caused by excessive rainfall case (4) intercommunication, slope piece (41) are fixed on the interior bottom surface of waterlogging caused by excessive rainfall case (4).
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| JPH01271200A (en) * | 1988-04-21 | 1989-10-30 | Yamada Kosan Kk | Semiconductor lead frame washing device |
| CN205385012U (en) * | 2016-01-15 | 2016-07-13 | 上海新阳半导体材料股份有限公司 | Line is produced in processing of lead frame |
| CN108155120A (en) * | 2017-12-18 | 2018-06-12 | 广州丰江微电子有限公司 | A kind of device for lead frame surface processing |
| CN112694144A (en) * | 2020-12-16 | 2021-04-23 | 安乡县雨林家庭农场 | Sewage treatment device and method for pig farm |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0661273A (en) * | 1992-08-06 | 1994-03-04 | Mitsubishi Electric Corp | Lead frame treatment method and device for it |
| CN112331566A (en) * | 2020-11-02 | 2021-02-05 | 昆山一鼎工业科技有限公司 | Manufacturing equipment and manufacturing method for surface roughness of lead frame |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01271200A (en) * | 1988-04-21 | 1989-10-30 | Yamada Kosan Kk | Semiconductor lead frame washing device |
| CN205385012U (en) * | 2016-01-15 | 2016-07-13 | 上海新阳半导体材料股份有限公司 | Line is produced in processing of lead frame |
| CN108155120A (en) * | 2017-12-18 | 2018-06-12 | 广州丰江微电子有限公司 | A kind of device for lead frame surface processing |
| CN112694144A (en) * | 2020-12-16 | 2021-04-23 | 安乡县雨林家庭农场 | Sewage treatment device and method for pig farm |
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