CN111818734A - Multifunctional automatic BGA repair workstation - Google Patents
Multifunctional automatic BGA repair workstation Download PDFInfo
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- CN111818734A CN111818734A CN202010484426.4A CN202010484426A CN111818734A CN 111818734 A CN111818734 A CN 111818734A CN 202010484426 A CN202010484426 A CN 202010484426A CN 111818734 A CN111818734 A CN 111818734A
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/22—Secondary treatment of printed circuits
- H05K3/225—Correcting or repairing of printed circuits
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K13/00—Apparatus or processes specially adapted for manufacturing or adjusting assemblages of electric components
- H05K13/04—Mounting of components, e.g. of leadless components
- H05K13/046—Surface mounting
- H05K13/0465—Surface mounting by soldering
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K13/00—Apparatus or processes specially adapted for manufacturing or adjusting assemblages of electric components
- H05K13/04—Mounting of components, e.g. of leadless components
- H05K13/0486—Replacement and removal of components
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K13/00—Apparatus or processes specially adapted for manufacturing or adjusting assemblages of electric components
- H05K13/08—Monitoring manufacture of assemblages
- H05K13/081—Integration of optical monitoring devices in assembly lines; Processes using optical monitoring devices specially adapted for controlling devices or machines in assembly lines
- H05K13/0812—Integration of optical monitoring devices in assembly lines; Processes using optical monitoring devices specially adapted for controlling devices or machines in assembly lines the monitoring devices being integrated in the mounting machine, e.g. for monitoring components, leads, component placement
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K13/00—Apparatus or processes specially adapted for manufacturing or adjusting assemblages of electric components
- H05K13/08—Monitoring manufacture of assemblages
- H05K13/081—Integration of optical monitoring devices in assembly lines; Processes using optical monitoring devices specially adapted for controlling devices or machines in assembly lines
- H05K13/0815—Controlling of component placement on the substrate during or after manufacturing
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
- H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
- H05K3/34—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by soldering
- H05K3/341—Surface mounted components
- H05K3/3431—Leadless components
- H05K3/3436—Leadless components having an array of bottom contacts, e.g. pad grid array or ball grid array components
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
- H05K2201/10613—Details of electrical connections of non-printed components, e.g. special leads
- H05K2201/10621—Components characterised by their electrical contacts
- H05K2201/10734—Ball grid array [BGA]; Bump grid array
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
- H05K2203/16—Inspection; Monitoring; Aligning
- H05K2203/166—Alignment or registration; Control of registration
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Operations Research (AREA)
- Cleaning In General (AREA)
- Electric Connection Of Electric Components To Printed Circuits (AREA)
Abstract
The invention discloses a multifunctional automatic BGA (ball grid array) repair workstation which comprises an upper machine body cover, a waste gas extraction system, an emergency stop switch, a grating protection system, a trundle foot cup, an oil mist separator, a lower machine body cover, an industrial personal computer, a power supply protection switch, a tool door, a display fixing plate, a keyboard placing plate, a display rotating shaft, a display rotating column, an industrial personal computer door, a machine head mechanism, an X-direction motor, a Y-direction sliding rail, a Y-direction motor, a material picking system, a PCB (printed circuit board) supporting system, a cooling system, a feeding system, a supporting column, a preheating box, an X-axis, a Y-axis, an X-direction sliding rail, a reference bottom plate, a preheating system, a lower hot air system, an upper CCD vision mechanism and a lower CCD.
Description
Technical Field
The invention relates to a multifunctional automatic BGA repair workstation.
Background
With the rapid development of electronic technology in recent years, the requirements of miniaturization, high density, high frequency and high efficiency of electronic product assembly on the repair quality of an assembling machine are higher and higher, the demand is stronger, BGA repair is developed rapidly, the BGA repair platform replaces the traditional BGA repair platform (including optical alignment and non-optical alignment) technology, and the first multifunctional automatic BGA repair workstation in China, which is a new repair device with the functions of electrical interconnection and mechanical support, is made. At present, the conventional BGA repair table is subjected to optical alignment and manual visual alignment, and the optical alignment is imaged by a split prism through an optical module; the manual visual alignment is to align the BGA solder legs and the screen printing lines and points of the PCB by naked eyes; at present, the two repair modes are far from the most ideal repair for high-end precise electronic products:
a can only be done manually;
b, the precision of high-end precise electronic products cannot be guaranteed, and the phenomena of insufficient soldering and missing soldering are easy to occur;
c, the repair efficiency is low and the repair success rate cannot be ensured;
and d, the automation degree is low, and the error in production work is large, so that the working quality is low.
The multifunctional automatic BGA repair workstation provided by the invention adopts a visual automatic alignment system, after a PCB and BGA images are captured and positioned by using a CCD, accurate alignment and mounting are realized by analyzing and correcting the images through image processing software, and the mounting accuracy can reach +/-0.025 mm. The collected image can be enlarged, reduced and fine-tuned, so that the image display is clearer. The full-automatic BGA repair workstation provided by the invention is operated by a computer, realizes full-automatic identification of material suction and mounting height, and has the functions of automatic alignment, automatic mounting, automatic welding, automatic unsoldering, automatic tin removal, automatic cleaning and automatic tin paste dipping. The consistency of the working quality is ensured, and the high-end precise electronic product is easily dealt with
The multifunctional automatic BGA repair workstation overcomes the defects in the prior art; and has realized having: a precise vision alignment system; b, an advanced intelligent operating system; c, an independent three-temperature-zone temperature control system; and d, automatically generating an analysis report in the running process, and tracking the repair history. e excellent safety protection function.
Disclosure of Invention
The present invention is directed to a multifunctional automatic BGA rework station to solve the above problems.
In order to achieve the purpose, the invention provides the following technical scheme:
a multifunctional automatic BGA repair workstation comprises an upper machine body cover, a waste gas extraction system, an emergency stop switch, a grating protection system, a caster foot cup, an oil mist separator, a lower machine body cover, an industrial personal computer, a power supply protection switch, a tool door, a display fixing plate, a keyboard placing plate, a display rotating shaft, a display rotating column, an industrial personal computer door, a machine head mechanism, an X-direction motor, a Y-direction sliding rail, a Y-direction motor, a material picking system, a PCB supporting system, a cooling system, a feeding system, a supporting column, a preheating box, an X-axis, a Y-axis, an X-direction sliding rail, a reference bottom plate, a preheating system, a lower hot air system, an upper CCD vision mechanism and a lower CCD vision mechanism; the waste gas extraction system, the emergency stop switch, the grating protection system, the trundle foot cup and the oil mist separator are sequentially arranged from outside to inside and from top to bottom, the industrial personal computer and the power supply protection switch are arranged in the lower cover of the machine body, the tool door and the industrial personal computer door are arranged outside the lower cover of the machine body, and the display, the display fixing plate, the keyboard placing plate, the display rotating shaft and the display rotating column are arranged on the right front side of the upper cover of the machine body from top to bottom.
Furthermore, a reference bottom plate is arranged on the lower cover of the machine body, and a support column, a preheating box, a material picking system, a PCB supporting system, a cooling system, a lower CCD vision mechanism, a tin paste scraping mechanism and a tin slag recovery tank are arranged on the reference bottom plate from bottom to top in sequence; the Y-axis is arranged on the pillar respectively, a Y-direction motor and a Y-direction slide rail screw rod are arranged in the Y-axis, an X-axis is arranged on the Y-axis, an X-direction motor and an X-direction slide rail screw rod are arranged in the X-axis, and a machine head mechanism is arranged on the X-direction slide rail and fixed on the X-direction slide rail; a preheating system is arranged in the preheating box, and a lower hot air system is arranged above the preheating system; the machine head mechanism comprises a positive-negative pressure switching electromagnetic valve, a vacuum filter, a head cooling fan, a dispenser, a cleaning module Z-axis motor, a mounting mechanism, a cleaning module synchronous belt, a cleaning module, a mounting module, a tin removing heating module, a heating head Z-axis lower limit, a secondary tin tank, a heating head Z-axis upper limit, a heating head Z-axis lead screw, a heating head Z-axis drag chain, a mounting head Z-axis synchronous belt, a mounting head Z-axis motor and an upper CCD lens; a mounting motor and a detinning heating motor are respectively fixed above a mounting motor fixing seat and a detinning heating motor fixing seat, a screw rod fixing seat and a screw rod are respectively arranged below the detinning heating motor and are connected with the screw rod through a coupling motor, and a synchronous wheel, a synchronous belt and a mounting mechanism are connected below the mounting motor; the Z-direction slide rail is respectively provided with a mounting mechanism and an upper heating mechanism, the right side of the Z-direction slide rail is connected with a Z-axis motor of the cleaning module and a dispensing machine base, and the cleaning module is connected on a synchronous belt on the Z-axis motor of the cleaning module through the guide rail.
Further, the mounting mechanism comprises a suction rod air inlet, a suction rod rotating motor, a light blocking disc, a suction rod rotating driving wheel, a BGA sucking disc, a suction rod pressure sensor, a suction rod rotating idle wheel, a suction rod linear bearing and a suction rod deep groove ball bearing; a rotary driven wheel, an induction limiting block and a circular inductor are arranged above the suction pipe, and a rotary joint is arranged at the top end of the suction pipe; the adjusting fixing seat is provided with an adjusting strut, the adjusting strut is provided with an upper adjusting seat and a lower adjusting seat which slide, and the photoelectric sensor is connected to the upper adjusting seat and the lower adjusting seat; a pull rod fixing ring and a suction nozzle fixing sleeve are arranged below the suction pipe, and the suction nozzle is connected in the suction nozzle fixing sleeve and fixed through base rice; a rotary motor is arranged below the rotary motor fixing plate, a rotary brake wheel is arranged above the rotary motor, and the rotary brake wheel is connected with a driven wheel through a cleaning module synchronous belt; the upper tin removing heating module comprises a second-stage tin can and is connected to a mechanism supporting plate, a tin removing head lifting cylinder is arranged on the upper portion of the upper tin removing heating module, a first-stage tin can and a tin removing head are hung on the upper portion of the upper tin removing heating module, a tin removing head rotating idler wheel, a ceramic heating wire and a hot air nozzle are surrounded on the periphery of the upper tin removing heating module from top to bottom, and a tin removing head rotating motor, a nozzle anti-collision sensor, a tin removing head rotating driving wheel and a cold air inlet are arranged behind the upper tin removing heating module and the hot air.
Furthermore, the cleaning module is connected to a Z-axis motor of the cleaning module, cleaning non-woven fabrics sequentially pass through a tension adjusting device, a speed adjusting sensor, a cleaning liquid dripper, a cleaning head pressure sensor, a cleaning roller and a material receiving disc from the material placing disc, a cleaning liquid tank and a liquid level sensor are hung below the tension adjusting device, and the material placing disc and the material receiving disc are connected with the material placing motor and the material receiving motor respectively at the back; the tin scraping paste mechanism is characterized in that a tin scraping platform supporting column is erected above a bottom plate of the tin scraping mechanism at the bottom, a tin scraping platform is arranged above the supporting column, a tin scraping idler wheel, a tin scraping synchronous belt, a tin scraping driving motor, a tin scraping driving wheel, a platform limiting inductor, a motion structure formed by the bottom plate of the tin scraping mechanism and a guide rail is arranged below the tin scraping platform, a tin scraping portal frame is erected above the tin scraping platform, a pressing mechanism is arranged below the tin scraping portal frame, a tin can is pressed below the tin can by a positioning column of the pressing mechanism, and an equal-thickness steel mesh is arranged below the tin can.
Compared with the prior art, the invention has the beneficial effects that:
1. manual alignment, mounting, unsoldering, tin removal, tin adhering and pad cleaning are not needed, uncertain factors generated by manual operation are avoided, the repair rejection rate is reduced, and the method is energy-saving and environment-friendly;
2. the operation is simple, the full-automatic intelligent motion system is controlled by a computer, the working error is reduced, the cost is reduced, and the working efficiency is improved;
3. the vision automatic alignment system realizes accurate alignment, and the accuracy can reach +/-0.025 mm;
4. the upper part is heated for detinning, mounting and cleaning, and is independently designed, so that the full-automatic recognition, material suction and mounting height, automatic alignment, automatic mounting, automatic welding and automatic unsoldering functions are realized.
5. The working area is provided with a grating protection system, so that potential safety hazards are avoided.
6. And automatically generating a temperature curve analysis report in the operation process, and tracing the repair history.
Drawings
FIG. 1 is a front view of a multi-function automated BGA rework workstation.
FIG. 2 is a schematic diagram of a multi-function automated BGA rework station.
FIG. 3 is a schematic view of the structure of the head cover in the multifunctional automated BGA rework station.
Fig. 4 is a schematic structural view of the head mechanism in the multifunctional automated BGA rework station.
FIG. 5 is a schematic structural view of an upper detinning and heating module in the multifunctional automatic BGA rework station.
Fig. 6 is a schematic view of the mounting mechanism in the multifunctional automated BGA rework station.
FIG. 7 is a schematic diagram of the cleaning module in the multifunctional automated BGA rework station.
FIG. 8 is a schematic diagram of the structure of the solder paste wiping mechanism in the multi-function automated BGA rework station.
In the figure: 1-upper body cover, 2-waste gas extraction system, 3-emergency stop switch, 4-grating protection system, 5-caster cup, 6-oil mist separator, 7-lower body cover, 8-industrial personal computer, 9-power supply protection switch, 10-door handle, 11-display, 12-display fixing plate, 13-keyboard placing plate, 14-display rotating shaft, 15-display rotating column, 16-lower baffle door, 17-head cover, 18-X direction motor, 19-Y direction slide rail, 20-Y direction motor, 21-material picking system, 22-cooling system, 23-feeding system, 24-support column, 25-preheating box, 26-X axis, 27-Y axis, 28-X direction slide rail, 29-preheating system, 30-a lower hot air system, 31-a lower CCD vision mechanism, 32-a reference bottom plate, 33-a PCB supporting system, 34-a tin slag recovery tank, 35-a positive and negative pressure switching electromagnetic valve, 36-a vacuum filter, 37-a head cooling fan, 38-a dispenser, 39-a cleaning module Z-axis motor, 40-a mounting mechanism, 41-a cleaning module synchronous belt, 42-a cleaning module, 43-a chip mounting module, 44-a tin removing and heating module, 45-a heating head Z-axis lower limit, 46-a second-stage tin tank, 47-a heating head Z-axis upper limit, 48-a heating head Z-axis screw rod, 49-a heating head Z-axis drag chain, 50-a chip mounting head Z-axis synchronous belt, 51-a chip mounting head Z-axis motor, 52-a chip mounting head Z-axis synchronous belt, 53-a chip mounting head Z-axis motor, 54-upper CCD lens, 55-tin removing head lifting cylinder, 56-first-stage tin tank, 57-tin removing head rotating idle wheel, 58-tin removing head, 59-ceramic heating wire, 60-hot air nozzle, 61-tin removing head rotating motor, 62-nozzle anti-collision sensor, 63-tin removing head rotating driving wheel, 64-cold air inlet, 65-suction rod air inlet, 66-suction rod rotating motor, 67-optical baffle, 68-suction rod rotating driving wheel, 69-BGA sucker, 70-suction rod, 71-suction rod pressure sensor, 72-suction rod rotating idle wheel, 73-suction rod linear bearing, 74-suction rod deep groove ball bearing, 75-tension adjusting device, 76-speed adjusting sensor, 77-cleaning liquid tank, 78-liquid level sensor, 79-cleaning head pressure sensor, 80-cleaning liquid dripper, 81-cleaning roller, 82-discharging tray, 83-discharging motor, 84-receiving motor, 85-receiving tray, 86-tin scraping idler wheel, 87-pressing mechanism, 88-tin tank, 89-tin scraping portal frame, 90-tin scraping platform, 91-equal thickness steel net, 92-tin scraping synchronous belt, 93-tin scraping driving motor, 94-tin scraping driving wheel, 95-platform limit sensor, 96-tin scraping platform support and 97-tin scraping mechanism bottom plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 8, in an embodiment of the present invention, a multifunctional automatic BGA rework station includes an upper body cover 1, a waste gas extraction system 2, an emergency stop switch 3, a grating protection system 4, a caster cup 5, an oil mist separator 6, a lower body cover 7, an industrial personal computer 8, a power supply protection switch 9, a tool door 10, a display 11, a display fixing plate 12, a keyboard placing plate 13, a display rotating shaft 14, a display rotating column 15, an industrial personal computer door 16, a head mechanism 17, an X-direction motor 18, a Y-direction slide rail 19, a Y-direction motor 20, a material picking system 21, a PCB support system 22, a cooling system 33, a feeding system 23, a support column 24, a preheating box 25, an X-axis 26, a Y-axis 27, an X-direction slide rail 28, a reference bottom plate 32, a preheating system 29, a lower hot air system 30, an upper CCD vision mechanism, and a lower CCD vision mechanism 31; the waste gas extraction system 22, the emergency stop switch 3, the grating protection system 4, the caster foot cup 5 and the oil mist separator 6 are sequentially arranged from outside to inside and from top to bottom, the industrial personal computer 8 and the power supply protection switch 9 are arranged in the machine body lower cover 7, the tool door and the industrial personal computer door are arranged outside the machine body lower cover 7, and the display 11, the display fixing plate 12, the keyboard placing plate 13, the display rotating shaft 14 and the display rotating column 15 are arranged on the right front side of the machine body upper cover 1 from top to bottom.
A reference bottom plate 32 is arranged on the lower cover 7 of the body, and the reference bottom plate 32 is provided with a pillar 24, a preheating box 25, a material picking system 21, a PCB supporting system 33, a cooling system 22, a lower CCD visual mechanism 31, a tin paste scraping mechanism and a tin slag recovery tank 34 from bottom to top in sequence; a Y-axis 27 is respectively arranged on the support 24, a Y-direction motor 20 and a Y-direction slide rail 19 lead screw are arranged in the Y-axis 27, an X-axis 26 is arranged on the Y-axis 27, an X-direction motor 18 and an X-direction slide rail 28 lead screw are arranged in the X-axis 26, and a head mechanism is arranged on the X-direction slide rail 28 and fixed on the X-direction slide rail; a preheating system 29 is arranged in the preheating box 25, and a lower hot air system 30 is arranged above the preheating box;
the machine head part mechanism comprises a positive and negative pressure switching electromagnetic valve 35, a vacuum filter 36, a head part cooling fan 37, a dispenser 38, a cleaning module Z-axis motor 39, a mounting mechanism 40, a cleaning module synchronous belt 41, a cleaning module 42, a chip mounting module 43, a tin removing heating module 44, a heating head Z-axis lower limit 45, a secondary tin tank 46, a heating head Z-axis upper limit 47, a heating head Z-axis lead screw 48, a heating head Z-axis drag chain 49, a chip mounting head Z-axis synchronous belt 50, a chip mounting head Z-axis motor 51, a chip mounting head Z-axis synchronous belt 52, a chip mounting head Z-axis motor 53 and an upper CCD lens 54; a mounting motor and a detinning heating motor are respectively fixed above the mounting motor fixing seat and the detinning heating motor fixing seat, a screw rod fixing seat and a screw rod are respectively arranged below the detinning heating motor, the screw rod fixing seat and the screw rod are connected with the screw rod through a coupler motor, and a synchronous wheel, a synchronous belt and a mounting mechanism 40 are connected below the mounting motor; the Z-direction slide rail is respectively provided with a mounting mechanism 40 and an upper heating mechanism, the right side of the Z-direction slide rail is connected with a cleaning module Z-axis motor 39 and a glue dispenser 38, and a cleaning module 42 is connected on a synchronous belt on the cleaning module Z-axis motor 39 through a guide rail.
The attaching mechanism 40 comprises a suction rod air inlet 65, a suction rod rotating motor 66, a light blocking disc 67, a suction rod rotating driving wheel 68, a BGA sucking disc 69, a suction rod 70, a suction rod pressure sensor 71, a suction rod rotating idle wheel 72, a suction rod linear bearing 73 and a suction rod deep groove ball bearing 74; a rotary driven wheel, an induction limiting block and a circular inductor are arranged above the suction pipe, and a rotary joint is arranged at the top end of the suction pipe; an adjusting strut 24 is arranged on the adjusting fixing seat, an upper adjusting seat and a lower adjusting seat which slide are arranged on the adjusting strut 24, and the photoelectric sensor is connected on the upper adjusting seat and the lower adjusting seat; a pull rod fixing ring and a suction nozzle fixing sleeve are arranged below the suction pipe, and the suction nozzle is connected in the suction nozzle fixing sleeve and fixed through base rice; the lower part of the fixed plate of the rotary motor is provided with the rotary motor, the upper part of the rotary motor is provided with a rotary brake wheel, and the rotary brake wheel is connected with a driven wheel through a cleaning module synchronous belt 41.
The upper tin removing heating module 44 comprises a second-stage tin tank 46 connected to a mechanism support plate, a tin removing head lifting cylinder 55 is arranged at the upper part of the upper tin removing heating module 44, a first-stage tin tank 56 and a tin removing head 58 are hung on the upper part of the upper tin removing heating module, a tin removing head rotating idle wheel 57, a ceramic heating wire 59 and a hot air nozzle 60 are surrounded from top to bottom on the periphery of the upper tin removing heating module, and a tin removing head rotating motor 61, a nozzle anti-collision sensor 62, a tin removing head rotating driving wheel 63 and a cold air inlet 64 are arranged behind the upper tin removing heating module and the hot air nozzle.
The cleaning module 42 is connected to the cleaning module Z-axis motor 39, and from the material discharge tray 82, the non-woven fabric for cleaning passes through the tension adjusting device 75, the speed adjusting sensor 76, the cleaning liquid dripper 80, the cleaning head pressure sensor 71, the cleaning roller 81 and the material receiving tray 85 in sequence, the cleaning liquid tank 77 and the liquid level sensor 78 are hung below the tension adjusting device 75, and the material discharge tray 83 and the material receiving tray 84 are respectively connected to the back of the material discharge tray 82 and the material receiving tray 85.
The tin scraping paste mechanism is characterized in that a tin scraping platform support column 24 is erected on a bottom plate of the tin scraping mechanism at the lowest part, a tin scraping platform 90 is arranged on the support column 24, a tin scraping idle wheel 86, a tin scraping synchronous belt 92, a tin scraping driving motor 93, a tin scraping driving wheel 94, a platform limiting sensor 95, a moving structure formed by a bottom plate 97 of the tin scraping mechanism and a guide rail is arranged below the tin scraping platform 90, a tin scraping portal frame 89 is erected, a pressing mechanism 87 is arranged below the tin scraping portal frame 89, a tin can 88 is pressed below by a positioning column of the pressing mechanism 87, and an equal-thickness steel mesh 91 is arranged below the tin can 88.
The working principle of the invention is as follows: as shown in the figure:
firstly, starting up preparation, and checking whether an emergency stop switch 3 is pressed down; the PCB to be repaired is fixed on the PCB supporting system 33 and is fixed at a corresponding position, the lower hot air system 30 is moved to a position right below the BGA to be repaired, so that local concentrated heating of the BGA is formed, the solder ball is favorably and quickly melted, and the repairing efficiency is improved; the BGA to be soldered is placed in the feeding system 23, the solder ball of the BGA faces downwards, and one corner of the back face corresponds to (has the same direction as) that of the PCB;
programming, namely setting parameters of Mark, setting other parameters and setting temperature parameters in a mode of an upper CCD vision mechanism and a lower CCD vision mechanism 31; all parameter settings are complete.
Placing the PCB at a corresponding position of the PCB support system, and aligning the lower heating system to the heated area; and opening a parameter file in the display 11, selecting a file, opening, selecting an operation mode and operating by adopting the industrial personal computer 8.
Fourthly, three modes of action modes:
a. mounting mode: the machine automatically detects the position of the PCB, judges the direction of the BGA to be repaired, picks up the BGA to be repaired, positions the BGA by an upper CCD vision mechanism, places the BGA on a bonding pad by a mounting mechanism 40, and heats the BGA after an upper tin removing heating module 44 reaches the surface of the BGA.
b. A disassembly mode: the machine automatically detects the PCB position-the upper detinning heating module 44 reaches the BGA surface to start heating-the heating completed mounting mechanism 40 will suck the BGA-place the BGA in the designated position (pick-up system 21).
c. And (3) welding mode: place the BGA on the required pads-machine auto detect PCB position-upper detin heat module 44 automatically reaches the BGA surface to start heating.
d. And (3) tin removing mode: the machine automatically detects the PCB position, the machine automatically detects the detinning position, and the upper detinning heating module 44 automatically reaches the detinning area to start heating and detinning.
e. A cleaning mode: machine automated inspection PCB position-machine automated inspection cleaning position-cleaning module 42 automatically reaches the cleaning area to begin cleaning.
f. Tin paste dipping mode: the BGA position is automatically detected by a machine, the BGA is automatically sucked by the mounting mechanism 40, the tin paste scraping mechanism scrapes a uniform tin paste surface, and the tin paste is dipped by the mounting mechanism 40; the X, Y, Z axis and phi angle are adjusted by servo driving by adopting a visual automatic alignment system in a manner of being controlled by an industrial personal computer 8, the precision can reach +/-0.025 mm, and the functions of accurate alignment, an intelligent motion system, automatic identification of material suction and mounting height, automatic alignment, automatic mounting, automatic welding, automatic unsoldering, automatic tin removal, automatic cleaning and automatic tin paste dipping are realized; the working quality is ensured, and high-end precise electronic products are easily dealt with; the invention adopts a computer control mode to enable an X-direction motor 18, a Y-direction motor 20, a detin heating motor, a mounting motor, a rotating motor, a cleaning module Z-axis motor 39, a discharging motor 83, a receiving motor 84 and a tin scraping driving motor 93 to achieve the functions of X-axis 26, Y-axis 27, Z-axis (upper heating mechanism/mounting mechanism 40) and R-axis (R angle) and an intelligent motion system, and realizes the functions of accurate alignment, automatic identification of material suction and mounting height, automatic alignment, automatic mounting, automatic welding, automatic unsoldering, automatic detin and automatic cleaning, material receiving and discharging;
it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are only for the convenience of description of the invention and to simplify the description, and do not indicate or imply that the referred device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (7)
1. The utility model provides a multi-functional automatic BGA reprocesses workstation, which characterized in that, including fuselage upper shield (1), waste gas takes out system (2), scram switch (3), grating protection system (4), truckle foot cup (5), oil mist separator (6), fuselage lower shield (7), industrial computer (8), power supply protection switch (9), tool door (10), display (11), display fixed plate (12), keyboard place board (13), display axis of rotation (14), display column of rotation (15), industrial computer door (16), aircraft nose mechanism (17), X is to motor (18), Y is to slide rail (19), Y is to motor (20), pick up material system (21), PCB props up system (22), cooling system (33), feed system (23), pillar (24), preheating cabinet (25), X axle (26), Y axle (27), X is to slide rail (28), A reference bottom plate (32), a preheating system (29), a lower hot air system (30), an upper CCD vision mechanism and a lower CCD vision mechanism (31); the device is characterized in that a waste gas extraction system (22), an emergency stop switch (3), a grating protection system (4), a caster foot cup (5) and an oil mist separator (6) are sequentially arranged from outside to inside and from top to bottom, an industrial personal computer (8) and a power supply protection switch (9) are arranged in a machine body lower cover (7), a tool door and an industrial personal computer door are arranged outside the machine body lower cover (7), and a display (11), a display fixing plate (12), a keyboard placing plate (13), a display rotating shaft (14) and a display rotating column (15) are arranged on the right front side of a machine body upper cover (1) to the bottom.
2. The multifunctional automatic BGA repair workstation according to claim 1, wherein a reference bottom plate (32) is arranged on the lower cover (7) of the machine body, and the reference bottom plate (32) is provided with a support column (24), a preheating box (25), a material picking system (21), a PCB supporting system (33), a cooling system (22), a lower CCD vision mechanism (31), a tin paste scraping mechanism and a tin slag recovery tank (34) from bottom to top; a Y-axis (27) is respectively arranged on the support column (24), a Y-direction motor (20) and a Y-direction slide rail (19) lead screw are arranged in the Y-axis (27), an X-axis (26) is arranged on the Y-axis (27), an X-direction motor (18) and an X-direction slide rail (28) lead screw are arranged in the X-axis (26), and a head mechanism is arranged on the X-direction slide rail (28) and fixed on the X-direction slide rail; a preheating system (29) is arranged in the preheating box (25), and a lower hot air system (30) is arranged above the preheating system.
3. The multifunctional automatic BGA rework workstation of claim 2, wherein the head mechanism comprises a positive and negative pressure switching solenoid valve (35), a vacuum filter (36), a head cooling fan (37), a dispenser (38), a cleaning module Z-axis motor (39), a mounting mechanism (40), a cleaning module synchronous belt (41), a cleaning module (42), a die mounting module (43), a tin removal heating module (44), a heating head Z-axis lower limit (45), a secondary tin can (46), a heating head Z-axis upper limit (47), a heating head Z-axis lead screw (48), a heating head Z-axis drag chain (49), a die mounting head Z-axis synchronous belt (50), a die mounting head Z-axis motor (51), a die mounting head Z-axis synchronous belt (52), a die mounting head Z-axis motor (53), and an upper CCD lens (54); a mounting motor and a detinning heating motor are respectively fixed above the mounting motor fixing seat and the detinning heating motor fixing seat, a screw rod fixing seat and a screw rod are respectively arranged below the detinning heating motor, the screw rod fixing seat and the screw rod are connected with the screw rod through a coupler motor, and a synchronous wheel, a synchronous belt and a mounting mechanism (40) are connected below the mounting motor; a sticking mechanism (40) and an upper heating mechanism are respectively arranged on the Z-direction slide rail, a cleaning module Z-axis motor (39) and a dispenser (38) seat are connected to the right side, and a cleaning module 42 is connected to a synchronous belt on the cleaning module Z-axis motor (39) through a guide rail.
4. The multi-functional automated BGA rework station of claim 3, wherein the mounting mechanism (40) includes a suction bar air inlet (65), a suction bar rotating motor (66), a light blocking plate (67), a suction bar rotating drive wheel (68), a BGA suction cup (69), a suction bar (70), a suction bar pressure sensor (71), a suction bar rotating idler wheel (72), a suction bar linear bearing (73), a suction bar deep groove ball bearing (74); a rotary driven wheel, an induction limiting block and a circular inductor are arranged above the suction pipe, and a rotary joint is arranged at the top end of the suction pipe; an adjusting strut (24) is arranged on the adjusting fixing seat, an upper adjusting seat and a lower adjusting seat are arranged on the adjusting strut (24) in a sliding manner, and the photoelectric sensor is connected to the upper adjusting seat and the lower adjusting seat; a pull rod fixing ring and a suction nozzle fixing sleeve are arranged below the suction pipe, and the suction nozzle is connected in the suction nozzle fixing sleeve and fixed through base rice; the lower part of the fixed plate of the rotary motor is provided with the rotary motor, the upper part of the rotary motor is provided with a rotary brake wheel, and the rotary brake wheel is connected with a driven wheel through a synchronous belt (41) of a cleaning module.
5. The multifunctional automatic BGA rework workstation of claim 4, wherein the upper tin removing heating module (44) comprises a second tin pot (46) connected to the mechanism support plate, a tin removing head lifting cylinder (55) is provided on the upper part of the upper tin removing heating module 44, a first tin pot (56) and a tin removing head (58) are hung on the upper tin removing heating module, a tin removing head rotating idler pulley (57), a ceramic heating wire (59) and a hot air nozzle (60) are surrounded from top to bottom on the periphery of the second tin pot, and a tin removing head rotating motor (61), a nozzle collision preventing sensor (62), a tin removing head rotating drive pulley (63) and a cold air inlet (64) are provided behind the second tin pot and the tin removing head.
6. The multifunctional automatic BGA rework station of claim 3, wherein the cleaning module (42) is connected to a Z-axis motor (39) of the cleaning module, and from a material placing tray (82), the non-woven fabric for cleaning passes through a tension adjusting device (75), a speed adjusting sensor (76), a cleaning solution dripper (80), a cleaning solution pressure sensor (71), a cleaning roller (81) and a material receiving tray (85), and a cleaning solution tank (77) and a liquid level sensor (78) are hung under the tension adjusting device (75), and a material placing tray (82) and a material receiving tray (85) are respectively connected to a material placing motor (83) and a material receiving motor (84).
7. The multifunctional automatic BGA repair workstation of claim 2, wherein the bottom of the tin scraping mechanism is provided with a tin scraping platform support column (24) on which a tin scraping mechanism base plate stands, the support column (24) is provided with a tin scraping platform (90), the bottom of the tin scraping platform (90) is provided with a tin scraping idle wheel (86), a tin scraping synchronous belt (92), a tin scraping driving motor (93), a tin scraping driving wheel (94), a platform limit sensor (95), a motion structure formed by the tin scraping mechanism base plate (97) and a guide rail, and the top of the tin scraping platform (90), the tin scraping portal frame (89) stands, the pressing mechanism (87) is arranged below the tin scraping portal frame (89), the tin can (88) is pressed by the positioning column of the pressing mechanism (87), and the tin can (88) is provided with an equal thickness steel mesh (91) below the tin can (88).
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113038711A (en) * | 2021-03-05 | 2021-06-25 | 合肥高地创意科技有限公司 | Paster device is used in integrated circuit board processing |
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| JP2012195429A (en) * | 2011-03-16 | 2012-10-11 | Fuji Mach Mfg Co Ltd | Electronic component repair machine and production line |
| CN103874343A (en) * | 2014-04-04 | 2014-06-18 | 深圳市卓茂科技有限公司 | High-precision full-automatic BGA repair workbench |
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| CN111818734B (en) | 2023-04-14 |
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