CN107086191B - Lead frame auto loading machine - Google Patents
Lead frame auto loading machine Download PDFInfo
- Publication number
- CN107086191B CN107086191B CN201710279421.6A CN201710279421A CN107086191B CN 107086191 B CN107086191 B CN 107086191B CN 201710279421 A CN201710279421 A CN 201710279421A CN 107086191 B CN107086191 B CN 107086191B
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- lead frame
- driving
- movable block
- auto loading
- delivery track
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/67005—Apparatus not specifically provided for elsewhere
- H01L21/67011—Apparatus for manufacture or treatment
- H01L21/67144—Apparatus for mounting on conductive members, e.g. leadframes or conductors on insulating substrates
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L24/00—Arrangements for connecting or disconnecting semiconductor or solid-state bodies; Methods or apparatus related thereto
- H01L24/74—Apparatus for manufacturing arrangements for connecting or disconnecting semiconductor or solid-state bodies
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L24/00—Arrangements for connecting or disconnecting semiconductor or solid-state bodies; Methods or apparatus related thereto
- H01L24/74—Apparatus for manufacturing arrangements for connecting or disconnecting semiconductor or solid-state bodies
- H01L24/78—Apparatus for connecting with wire connectors
Abstract
The invention discloses a kind of lead frame auto loading machines, its key points of the technical solution are that: including rack, the feeding device being sequentially arranged in rack, track conveying device, welder and auto loading device, track conveying device includes the delivery track being connected between feeding device and auto loading device, closely cover on the housing on delivery track, for the delivery device toward auto loading device to be pushed away from feeding device along delivery track promotion lead frame, housing upper surface offers the chute feeder and welding groove communicated with casing interior, chute feeder is arranged along lead frame conveying direction and is protruded into for delivery device to push lead frame, welding groove is located at below welder and is subjected to for welder, delivery track is located at one section before welder and is equipped with heating plate and to providing the gas supply of protective gas in housing Device.Its housing can reduce scattering and disappearing for heat, and be filled with after protective gas the heated oxide that can reduce lead frame.
Description
Technical field
The present invention relates to leadframe die welding field, in particular to a kind of lead frame auto loading machine.
Background technique
Lead frame is the carrier of IC chip, is a kind of by means of bonding material (spun gold, aluminium wire, copper wire) realization
The electrical connection of chip internal circuits exit and outer lead forms the key structure part of electric loop, it is played and outside
The function served as bridge of conducting wire connection, requires using lead frame in most semiconductor integrated blocks, is electronics and information industry
In important basic material.Chip thereon is fixed in lead frame by way of welding mostly.
Currently, the Chinese patent that publication No. is CN102315133A discloses a kind of integrated circuit chip loader framework delivery system
System, mainly includes feed mechanism, rail mechanism, cutting agency and feeding sensor, rail sensor, blanking sensor.
After startup power supply, then software is divided by feeding sensor, rail sensor, blanking sensor, collection status information
Not Kong Zhi feeding manipulator, driving element, blanking mechanical hand generation movement, take out lead frame from upper magazine, pass to track
In mechanism, patch operation is carried out, is finally put into blanking box, completes the transmission process of the lead frame of a cycle.
In order to allow the internal circuit exit of chip can be preferably in conjunction with outer lead, usually with the shape of slicken solder welding
Formula is fixed, and still, if carrying out welding processing in above-mentioned rail mechanism, has lacked the heated oxide guarantor to lead frame
Shield, influences the welding quality of chip and lead frame.
Summary of the invention
In view of the deficiencies of the prior art, the present invention intends to provide a kind of lead frame auto loading machine,
The welding quality of chip and lead frame is high.
Above-mentioned technical purpose of the invention has the technical scheme that
A kind of lead frame auto loading machine, including rack, the feeding device being sequentially arranged in rack, orbit transports dress
It sets, welder and auto loading device, track conveying device include being connected between feeding device and auto loading device
Delivery track closely covers on housing on delivery track, is past for pushing lead frame to push away from feeding device along delivery track
The delivery device of auto loading device, housing upper surface offer the chute feeder and welding groove communicated with casing interior, chute feeder
It arranges along lead frame conveying direction and is protruded into for delivery device to push lead frame, welding groove is located at below welder
And be subjected to for welder, delivery track is located at one section before welder and is equipped with heating plate and to cover
The feeder of protective gas is provided in shell.
Through the above technical solutions, during lead frame is sent at welder from feeding device, heating plate pair
Lead frame on delivery track will do it preheating, and lead frame begins to slowly heat up when entering in housing, work as arrival
When at welder, the temperature of lead frame reaches preferable welding temperature, and the welding of chip on the lead frames can be improved
Quality and welding efficiency；Herein, on the one hand housing tightly covers on delivery track, it is possible to reduce heat scatters and disappears, to drawing
The pre-heat effect of wire frame is good；On the other hand, the protective gas that feeder is filled with can be full of in housing, be greatly reduced
The heated oxide of lead frame, protects the welding quality of solder joint, while reducing the oxidation of lead frame, greatly improves chip and draws
The welding quality of wire frame；In addition, lead frame can be stacked at feeding device in advance when lead frame auto loading machine works
In, after booting, by feeding device from feeding in trend track conveying device, delivery device is by lead frame from feeding device one end
It is sent to auto loading device one end, during this, welder carries out automatic welding into the lead frame for crossing welding groove in conveying
It connects, soldered lead frame is sent into auto loading device through track conveying device and carries out auto loading, and whole process is complete
It is automatically performed, high degree of automation is high in machining efficiency.
Preferably, delivery device include can along the movable block that delivery track length direction moves, along delivery track length side
To being arranged in the shifting axle that can be circumferentially rotated on movable block, be fixed on the promotion on shifting axle to push lead frame mobile
Arm, in rack to drive movable block mobile the first driving portion, be fixed on movable block to drive shifting axle circumferential
Second driving portion of rotation, shifting axle, which is equipped with, generates the limiting section of axial displacement to limit shifting axle and movable block, pushes
Arm is equipped with far from one end of shifting axle to protrude into chute feeder the push rod for pushing lead frame Forward.
Through the above technical solutions, shifting axle is arranged on movable block, shifting axle is by limiting section axial limiting in movement
Block, i.e. shifting axle can be circumferentially rotated freely, while can moved with the movement of movable block；Delivery device is to lead frame
Push process is as follows:
Firstly, push rod is rotated towards lead frame, namely is turned downward under the action of the second driving portion, chute feeder is protruded into
In, so that push rod can be against the left side of lead frame；
Then, under the action of the first driving portion, push rod moves right, thus push lead frame to one section of right translation away from
From；
Then, the second driving portion drives shifting axle to rotate backward, even if also push rod is lifted upwards, to be detached from lead frame；
Finally, the first driving portion, which drives shifting axle to be moved to the left, return back to initial position, next cycle movement is carried out；
Like this, push rod is fed repeatedly, realizes stepping of the lead frame on delivery track, and feeding process is smooth, pauses
Time is controllable, convenient for welding operation.
Preferably, the first driving portion includes being arranged on movable block and to drive movable block along delivery track length direction
Movement driving screw rod, drive driving screw rod positive and negative rotation the first driving motor, rack along delivery track length direction according to
Secondary to be placed with the first photoelectric sensor and the second photoelectric sensor, movable block is equipped with and the first photoelectric sensor and the second photoelectricity
First photoelectricity baffle of sensor cooperation.
Through the above technical solutions, by the first photoelectricity baffle respectively with the first photoelectric sensor and the second photoelectric sensor
It is used cooperatively, has the function that control movable block moving distance, namely control the actuating length of each lead frame.
Preferably, the second driving portion includes being fixed on the driven disc on shifting axle, being set on movable block and after powered up may be used
The electromagnet of driven disc is adsorbed, third photoelectric sensor is additionally provided on movable block, shifting axle is equipped with and third photoelectric sensor
The second photoelectricity baffle being used cooperatively.
Through the above technical solutions, electromagnet energization can generate larger magnetic force, driven disc is adsorbed, to realize
The circumferentially rotating of shifting axle；After electromagnet power loss, magnetic force disappears, and moving arm under the effect of gravity again can be from trend
Lower rotation, to realize the positive and negative rotation of shifting axle, easy to operate, power is reliable.
Preferably, limiting section includes being fixed on shifting axle and being located at the first baffle ring of movable block side, be fixed on movement
The second baffle ring on axis and positioned at the movable block other side, the second baffle ring are equipped with the compressed spring to resist movable block side.
Through the above technical solutions, the first baffle ring and the second baffle ring are both secured on shifting axle, two baffle rings press from both sides movable block
In centre, thus play limitation shifting axle and movable block mutually generate axial displacement；Herein, compressed spring is added, can moved
When motion block is mobile to the second baffle ring side, certain buffer function is played, is reduced since stuck when push rod location error is mobile, card is bad
The phenomenon that occur.
Preferably, the inner surface of housing is equipped with to the shield that blocks chute feeder, along the length side of chute feeder on shutter
To the kidney slot mobile for push rod is offered, shield is equipped with the cover board to cover kidney slot, and push rod passes through cover board and protrudes into
In kidney slot, when push rod moves along kidney slot and lead frame is pushed to move forward, cover board covers kidney slot always.
Through the above technical solutions, push rod passes through cover board and protrudes into kidney slot；When push rod is moved along kidney slot, cover board
Kidney slot, the good space-closed for realizing housing, to preferably lock are moved together and covered always with push rod
Heat in housing reduces thermal loss, guarantees welding quality.
Preferably, feeding device includes the platform to be transported for being undertaken in track conveying device the last period, positioned at flat wait transport
Platform side and the material lodging bench to store lead frame, delivery track are extended to close to one end of platform to be transported wait transport
On platform, wait transport platform equipped with pusher cylinder, the cylinder rod of pusher cylinder is equipped with to push lead frame along conveying
Track moves into the pushing block in housing, and material lodging bench is equipped with blowing inclined-plane, and the gradient direction along blowing inclined-plane is equipped with transmission
Belt, material lodging bench are equipped with the second driving motor to drive driving belt to move, and support is fixed on driving belt and is existed
Lead frame bottom on blowing inclined-plane and the jacking plate to push lead frame to rise, be additionally provided on material lodging bench to
Lead frame on blowing inclined-plane is transported to wait transport the transshipment acitivity on platform.
Through the above technical solutions, platform to be transported mutually is connected with the head end of track conveying device, material storage platform is then
It is connected in the side of platform to be transported；
The course of work of feeding device is as follows:
Firstly, lead frame is stacked on blowing inclined-plane, numerous lead frames fallen together are lived by jacking plate support；Starting
When, under the action of the second driving motor, driving belt drives jacking plate to rise, when lead frame rises to close to flat wait transport
When platform, stop motion；At this point, transshipment acitivity works, the lead frame on blowing inclined-plane is transported to the conveying of platform to be transported
On track；Finally, pushing block pushes lead frame to be sent into housing along delivery track under the action of pusher cylinder；
The above process is automatically performed, and high degree of automation greatly improves production efficiency.
Preferably, transshipment acitivity include the rotating bar being rotationally connected on material lodging bench, the suction be fixed in rotating bar
Material bar, on material lodging bench and to drive rotating bar rotate third driving motor, suction bar be equipped with to be sucked
The air intake duct of lead frame can make suction bar draw lead frame from blowing inclined-plane and be transported to transport by rotary motion bar
On the delivery track of platform.
Through the above technical solutions, third driving motor drives rotating bar court to put when needing to carry out lead frame transhipment
Expect bevel direction rotation, thus the surface of the air intake duct contact lead-wire frame in suction bar, and be sucked；Then, third driving electricity
Machine drives rotating bar to rotate backward, and when lead frame rides on delivery track, air intake duct stops suction, can be to pushing block pair
Lead frame is pushed.
Preferably, auto loading device includes the photo mounting stand for being undertaken in latter section of track conveying device, along photo mounting stand height
The vertical guide bracket of direction setting, sliding are connected to vertical guide bracket and the mounting box to be connected to each other with delivery track, driving
The third driving portion that mounting box moves up and down is additionally provided with box body arrangement platform on photo mounting stand and to push mounting box to be detached from
Vertical guide bracket and the fourth drive part being arranged on box body arrangement platform.
Through the above technical solutions, after the completion of lead frame welding processing, under the action of delivery device, lead frame
It can be pushed into mounting box；When lead frame push away it is a piece of enter mounting box in when, mounting box i.e. under the action of third driving portion to
Lower movement one end, convenient for the loading of next lead frame；After mounting box fills lead frame namely mounting box is detached from vertically
When guide bracket, mounting box is pushed away from vertical guide bracket under the action of fourth drive part automatically, is convenient for next mounting box
Load, it is easy to operate, fast, high degree of automation.
Preferably, third driving portion includes the driving cog to hold the supporting plate of mounting box bottom, be connected to supporting plate top
Article, be meshed with driving rack driving gear, drive sliding tooth wheel rotation the 4th driving motor, fourth drive part includes position
Mounting box is driven to transport towards box body arrangement platform direction in dragging plate, driving dragging plate of the mounting box far from box body arrangement platform side
The driving cylinder for moving and being arranged on box body arrangement platform.
Through the above technical solutions, supporting plate controls its up and down motion by the cooperation of rack-and-pinion, position control is accurate；Together
When, the mounting box for filling lead frame can be released with quick response by vertical guide bracket by driving cylinder.
Detailed description of the invention
Fig. 1 is the overall structure diagram of embodiment；
Fig. 2 is the structural schematic diagram at embodiment middle orbit conveying device；
Fig. 3 is the portion A enlarged drawing in Fig. 2；
Fig. 4 is the partial structural diagram in embodiment at delivery device；
Fig. 5 is the structural schematic diagram in embodiment at feeding device；
Fig. 6 is the structural schematic diagram of welder and auto loading device in embodiment；
Fig. 7 is the structural schematic diagram in embodiment at auto loading device.
Appended drawing reference: 1, rack；2, chute feeder；3, welding groove；4, feeding device；41, platform to be transported；42, material is deposited
Put platform；5, track conveying device；51, delivery track；52, housing；53, delivery device；531, movable block；532, shifting axle；
533, arm is pushed；534, the first driving portion；5341, screw rod is driven；5342, the first driving motor；535, the second driving portion；
5351, driven disc；5352, electromagnet；6, welder；61, wire feeder structure；62, articles holding table；63, welding mechanism；631,
Welding gun；632, cross slid platform；7, auto loading device；71, photo mounting stand；72, vertical guide bracket；73, mounting box；74, third is driven
Dynamic portion；741, supporting plate；742, driving rack；743, gear is driven；744, the 4th driving motor；8, limiting section；81, first gear
Ring；82, the second baffle ring；83, compressed spring；9, transshipment acitivity；91, rotating bar；92, suction bar；93, third driving motor；10,
Kidney slot；11, cover board；12, heating plate；13, feeder；14, gas delivery header；15, push rod；16, line rail；17, linear slide block；
18, the first photoelectric sensor；19, the second photoelectric sensor；20, the first photoelectricity baffle；21, third photoelectric sensor；22, second
Photoelectricity baffle；23, pusher cylinder；24, pushing block；25, blowing inclined-plane；26, driving belt；27, the second driving motor；28, it holds in the palm
Top plate；29, air intake duct；30, tooth lattice；31, box body arranges platform；32, fourth drive part；321, dragging plate；322, cylinder is driven；
33, the 4th photoelectric sensor；34, shield；100, lead frame.
Specific embodiment
Below in conjunction with attached drawing, invention is further described in detail.
Such as attached drawing 1 and lead frame auto loading machine shown in Fig. 3, including rack 1, the feeding being sequentially arranged in rack 1
Device 4, track conveying device 5, welder 6 and auto loading device 7.When work: firstly, lead frame 100 is placed in
Expect device 4 in and from feeding device 4 into track conveying device 5 feeding；Then, track conveying device 5 by lead frame 100 from
It is sent to 7 one end of auto loading device in 4 one end of feeding device；Wherein, welder 6 is located at feeding device 4 and auto loading device 7
Between, to complete welding of the chip on lead frame 100；Finally, soldered lead frame 100 is filled through orbit transports
It sets in 5 feeding auto loading devices 7 and carries out auto loading, whole process is automatically finished.
It describes in detail below for each device:
The track conveying device 5 as shown in attached drawing 1, attached drawing 2 and 3, including it is connected to feeding device 4 and auto loading device
Delivery track 51 between 7 closely covers on housing 52 on delivery track 51, for pushing lead frame along delivery track 51
100 push away the delivery device 53 toward auto loading device 7 from feeding device 4.52 upper surface of housing offers and 52 inside phase of housing
Logical chute feeder 2 and welding groove 3, chute feeder 2 are arranged along 100 conveying direction of lead frame, and the inner surface of housing 52 is equipped with to hide
The shield 34 for keeping off chute feeder 2, the length direction on shield 34 along chute feeder 2 offer kidney slot 10, be equipped on shield 34 to
Cover the cover board 11 of kidney slot 10.Welding groove 3 is then located at 6 lower section of welder.Herein, delivery track 51 is located at welder 6
Preceding one section is equipped with heating plate 12, and heating plate 12 is between two delivery tracks 51 to be preheated to lead frame 100.
In addition, see attached drawing 6, it is additionally provided in rack 1 to providing the feeder 13 of protective gas in housing 52, it is close on housing 52
It is equipped at welder 6 to 52 internal ventilation of housing and to be connected to the gas delivery header 14 of feeder 13.Herein, gas is nitrogen
Hydrogen mixed gas, the content of hydrogen is in 7% ~ 15% range.
Wherein, referring to attached drawing 2 and 4, delivery device 53 includes movable block 531, shifting axle 532, pushes arm 533, to drive
The first mobile driving portion 534 of dynamic movable block 531, the second driving portion 535 to drive shifting axle 532 to circumferentially rotate.It is mobile
Block 531 can be moved along 51 length direction of delivery track, and shifting axle 532 is arranged on movable block 531 and can freely circumferentially rotate, and be moved
Moving axis 532 is across entire track conveying device 5；Shifting axle 532 is equipped with to be generated to limit shifting axle 532 and movable block 531
The limiting section 8 of axial displacement.Herein, limiting section 8 includes first for being fixed on shifting axle 532 and being located at 531 side of movable block
Baffle ring 81, the second baffle ring 82 for being fixed on shifting axle 532 and being located at 531 other side of movable block, the second baffle ring 82, which is equipped with, to be used
To resist the compressed spring 83 of 531 side of movable block.It pushes arm 533 to be then fixed on shifting axle 532, pushes arm 533 far from shifting
One end of moving axis 532 is equipped with to protrude into the push rod 15 for pushing lead frame 100 to move forward in chute feeder 2；Herein, it is set on cover board 11
There is the circular hole passed through for push rod 15, push rod 15 passes through cover board 11 and protrudes into kidney slot 10；When push rod 15 is moved along kidney slot 10
When, cover board 11 moves together with push rod 15 and covers kidney slot 10 always.
Wherein, the first driving portion 534 includes being arranged on movable block 531 and to drive movable block 531 along delivery track
The driving screw rod 5341 of 51 length directions movement, the first driving motor 5342 for driving driving 5341 positive and negative rotation of screw rod, herein,
It drives and is equipped with belt pulley on the end of screw rod 5341 and the motor shaft of the first driving motor 5342, the first driving motor 5342 is logical
It crosses belt pulley and delivers power to driving screw rod 5341.In order to make the movement of movable block 531 more steady, under movable block 531
Side is axially arranged with line rail 16 along shifting axle 532, slides on line rail 16 and is fixed on 531 lower surface of movable block on the upside of being connected with
Linear slide block 17.In addition, rack 1 is successively placed with the first photoelectric sensor 18 and the second light along the length direction of delivery track 51
Electric transducer 19, movable block 531 are equipped with the first photoelectricity cooperated with the first photoelectric sensor 18 and the second photoelectric sensor 19
Baffle 20.
Second driving portion 535 includes being fixed on the driven disc 5351 on shifting axle 532, being set on movable block 531 and logical
The electromagnet 5352 of adsorbable driven disc 5351 after electricity is additionally provided with third photoelectric sensor 21, shifting axle 532 on movable block 531
It is equipped with the second photoelectricity baffle 22 being used cooperatively with third photoelectric sensor 21.
Herein, the motion process of track conveying device 5 is as follows:
When initial, the first photoelectricity baffle 20 faces the first photoelectric sensor 18, the second photoelectricity baffle 22 and third photoelectricity
21 mutual dislocation of sensor；At this point, push rod 15 protrudes into chute feeder 2 and contradicts the side of lead frame 100；
Then, the first driving motor 5342 rotates forward and drives movable block 531 mobile towards the direction of welder 6, from
And push rod 15 is driven to push lead frame 100 to the right；Herein, the first driving motor 5342 can be rotated forward first, be stopped
Once, it then rotates forward, stops；Namely after lead frame 100 is pushed a distance by push rod 15, one section can be stopped
Time carries out weld job to one of pad of lead frame 100 for welder 6, then, then push it is a bit of away from
From and stop to carry out weld job to another pad of same lead frame 100 for welder 6；
At this point, the first photoelectricity baffle 20 faces the telecommunications that the second photoelectric sensor 19 triggers the second photoelectric sensor 19
Number, the second photoelectric sensor 19 gives electromagnet 5352 electric signal, so that electromagnet 5352 is powered and generates magnetic force and adsorb driven disc
5351, driven disc 5351 drives shifting axle 532 to rotate, so that driving push rod 15 to lift upwards is detached from lead frame 100；
At this point, the second photoelectricity baffle 22 faces third photoelectric sensor 21 and triggers its electric signal, third photoelectric sensing
Device 21 gives the first driving motor 5342 electric signal, and the first driving motor 5342 is inverted and drives movable block 531 to moving to left
It is dynamic, so that push rod 15 be driven to carry out returning back to initial position to the left；
When push rod 15 namely movable block 531 return back to initial position, the first photoelectricity baffle 20 faces the first light again
Electric transducer 18, the first photoelectric sensor 18 give electromagnet 5352 electric signal, and electromagnet 5352 powers off, thus in the work of gravity
Under, push rod 15 rotates down conflict lead frame 100 again, the movement of pending next cycle.
Feeding device 4 as shown in Fig. 5, platform to be transported 41, position including being undertaken in 5 the last period of track conveying device
In 41 side of platform to be transported and the material lodging bench 42 to store lead frame 100, delivery track 51 is close to flat wait transport
One end of platform 41 extends on platform 41 to be transported, and platform 41 to be transported is equipped with pusher cylinder 23, the cylinder of pusher cylinder 23
Bar is equipped with to push lead frame 100 to move into along delivery track 51 pushing block 24 in housing 52, on material lodging bench 42
Equipped with blowing inclined-plane 25, the gradient direction along blowing inclined-plane 25 is equipped with driving belt 26, and material lodging bench 42 is equipped with to drive
The second driving motor 27 that driving belt 26 moves is moved, the lead frame held in the palm on blowing inclined-plane 25 is fixed on driving belt 26
100 bottoms and the jacking plate 28 to push lead frame 100 to rise are additionally provided on material lodging bench 42 to by blowing inclined-plane
Lead frame 100 on 25 is transported to the transshipment acitivity 9 on platform 41 to be transported.
Wherein, transshipment acitivity 9 includes rotating bar 91, suction bar 92, the third driving electricity to drive rotating bar 91 to rotate
Machine 93.Third driving motor 93 is fixed on material lodging bench 42, and one end of rotating bar 91 is connected to third driving motor 93
Motor shaft, the other end are rotationally connected on material lodging bench 42；Suction bar 92 is then fixed in rotating bar 91, the length of suction bar 92
The length direction for spending direction along delivery track 51 is arranged, and is placed with along the length direction of suction bar 92 lead frame is sucked
100 air intake duct 29 can make suction bar 92 draw lead frame 100 from blowing inclined-plane 25 and transport by rotary motion bar 91
To the delivery track 51 of platform 41 to be transported.
Herein, the motion process of feeding device 4 is as follows:
Firstly, lead frame 100 is stacked on blowing inclined-plane 25, numerous lead frames fallen together are held by jacking plate 28
Frame 100；When starting, under the action of the second driving motor 27, driving belt 26 drives jacking plate 28 to rise, and works as lead frame
100 rise to close when transporting platform 41, stop motion；At this point, transshipment acitivity 9 works, third driving motor 93 is with turn
Lever 91 is rotated towards 25 direction of blowing inclined-plane, thus the surface of the 29 contact lead-wire frame 100 of air intake duct in suction bar 92, and inhale
Firmly；Then, third driving motor 93 drives rotating bar 91 to rotate backward, and when lead frame 100 rides on delivery track 51, inhales
Tracheae 29 stops suction, even if the lead frame 100 on blowing inclined-plane 25 is transported on the delivery track 51 of platform 41 to be transported；
Finally, pushing block 24 can push lead frame 100 to be sent into housing 52 along delivery track 51 under the action of pusher cylinder 23.
Welder 6 as shown in Fig. 6, articles holding table 62 including wire feeder structure 61, to load chip, to
Chip is removed from articles holding table 62 and protrudes into welding groove 3 welding mechanism 63 being welded in chip on lead frame 100.Wherein, it welds
Connection mechanism 63 includes the cross slid platform 632 that welding gun 631 and driving welding gun 631 move in perpendicular, and welding gun 631 is air gun,
To draw the chip on articles holding table 62；Articles holding table 62 can be moved in the horizontal plane along X, Y-axis and is placed on articles holding table 62
Chip to be welded.Wire feeder structure 61 is welding wire to be sent into housing 52, when the lead frame 100 of welding wire contact heating,
Welding wire can melt on lead frame 100.
When work, one section of welding wire is first sent into housing 52 by wire feeder structure 61, and welding wire contact lead-wire frame 100 is i.e. molten
On 100 corresponding position of lead frame；Then, under the action of delivery device 53, there is the lead frame 100 of solder to weldering for molten
It is pushed at access slot 3；Then, welding gun 631 moves towards articles holding table 62 and draws the chip on articles holding table 62；Finally, welding gun 631 protrudes into
In welding groove 3 and the chip of absorption is placed on the molten lead frame 100 for having solder and completes weld job.
Auto loading device 7 as seen in figs. 6 and 7, the photo mounting stand including being undertaken in 5 latter sections of track conveying device
71, along 71 short transverse of photo mounting stand setting vertical guide bracket 72, sliding be connected to vertical guide bracket 72 and to and conveyor track
The third driving portion 74 that mounting box 73 that road 51 is connected to each other, driving mounting box 73 move up and down, even partition has in mounting box 73
To be packed into the tooth lattice 30 of lead frame 100；Box body arrangement platform 31 is additionally provided on photo mounting stand 71 and to push mounting box
73 fourth drive parts 32 for being detached from vertical guide bracket 72 and being arranged on box body arrangement platform 31.
Wherein, third driving portion 74 includes to hold the supporting plate 741 of 73 bottom of mounting box, be connected to 741 top of supporting plate
Driving rack 742, be meshed with driving rack 742 driving gear 743, drive driving gear 743 rotate the 4th driving
Motor 744.Fourth drive part 32 includes arranging the dragging plate 321 of 31 side of platform far from box body positioned at mounting box 73, driving and drag
The driving cylinder that movable plate 321 drives mounting box 73 to move and be arranged on box body arrangement platform 31 towards box body arrangement 31 direction of platform
322.Herein, the inlet that the bottom of vertical guide bracket 72 is located at mounting box 73 is equipped with the 4th photoelectric sensor 33；Work as lead frame
When frame 100 is completely fed into mounting box 73, just induction is less than lead frame 100 for the 4th photoelectric sensor 33, at this point, 4 wheel driven
Dynamic motor 744 will drive the height that supporting plate 741 declines a tooth lattice 30.
When work, the lead frame 100 of chip has been welded under the action of delivery device 53, is pushed into mounting box 73 step by step
Tooth lattice 30 in；When one group of lead frame 100 is entirely enclosed in the tooth lattice 30 of mounting box 73, the 4th photoelectric sensor 33 is given
4th driving motor, 744 electric signal, so that the 4th driving motor 744 drive supporting plate 741 moves down the distance of a tooth lattice 30；
When mounting box 73 is detached from from vertical guide bracket 72 downwards completely, driving cylinder 322 drives dragging plate 321 to bounce back, to drag
Mounting box 73 is pushed on box body arrangement platform 31 by movable plate 321；Herein, it can be placed again into down above vertical guide bracket 72
One mounting box 73 carries out load.
The above is only exemplary embodiment of the invention, protection scope and is not intended to limit the present invention, this hair
Bright protection scope is determined by the attached claims.
Claims (9)
1. a kind of lead frame auto loading machine, including rack (1), the feeding device (4), the track that are sequentially arranged on rack (1)
Conveying device (5), welder (6) and auto loading device (7), it is characterized in that: track conveying device (5) includes being connected to
Expect the delivery track (51) between device (4) and auto loading device (7), closely cover on the housing on delivery track (51)
(52), for pushing away the delivery device toward auto loading device (7) from feeding device (4) along delivery track (51) promotion lead frame
(53), housing (52) upper surface offers and the internal chute feeder (2) and welding groove (3) communicated of housing (52), chute feeder (2) edge
Lead frame conveying direction arranges and protrudes into for delivery device (53) to push lead frame, and welding groove (3) is located at welding dress
It sets below (6) and is subjected to for welder (6), delivery track (51) is located at one section before welder (6) and sets
There is heating plate (12) and to the feeder (13) to offer protective gas in housing (52)；Delivery device (53) includes can
Along delivery track (51) length direction movement movable block (531), along delivery track (51), length direction is arranged in movable block
(531) shifting axle (532) that can circumferentially rotate on is fixed on promotion on shifting axle (532) to push lead frame mobile
Arm (533) is set on rack (1) to drive the first driving portion (534) of movable block (531) movement, be fixed on movable block
(531) to the second driving portion (535) for driving shifting axle (532) to circumferentially rotate on, shifting axle (532) is equipped with to limit
Shifting axle (532) and movable block (531) generate the limiting section (8) of axial displacement, push arm (533) far from shifting axle (532)
One end is equipped with to protrude into chute feeder (2) push rod (15) for pushing lead frame Forward.
2. lead frame auto loading machine according to claim 1, it is characterized in that: the first driving portion (534) includes wearing
In on movable block (531) and the driving screw rod to drive movable block (531) to move along delivery track (51) length direction
(5341), first driving motor (5342) of driving screw rod (5341) positive and negative rotation is driven, rack (1) is along delivery track (51)
Length direction is successively placed with the first photoelectric sensor (18) and the second photoelectric sensor (19), movable block (531) be equipped with
First photoelectricity baffle (20) of the first photoelectric sensor (18) and the second photoelectric sensor (19) cooperation.
3. lead frame auto loading machine according to claim 2, it is characterized in that: the second driving portion (535) includes fixing
In on shifting axle (532) driven disc (5351), be set on movable block (531) and adsorbable driven disc (5351) after powered up
Electromagnet (5352) is additionally provided with third photoelectric sensor (21) on movable block (531), and shifting axle (532) is equipped with and third light
The second photoelectricity baffle (22) that electric transducer (21) is used cooperatively.
4. lead frame auto loading machine according to claim 1, it is characterized in that: limiting section (8) includes being fixed on movement
On axis (532) and it is located at first baffle ring (81) of movable block (531) side, is fixed on shifting axle (532) and be located at movable block
(531) the second baffle ring (82) of the other side, the second baffle ring (82) are equipped with the compressed spring to resist movable block (531) side
(83)。
5. lead frame auto loading machine according to claim 1, it is characterized in that: the inner surface of housing (52) be equipped with to
Block the shield (34) of chute feeder (2), the length direction on shutter along chute feeder (2) offers the waist mobile for push rod (15)
Shape slot (10), shield (34) are equipped with the cover board (11) to cover kidney slot (10), and push rod (15) passes through cover board (11) and stretches
Enter in kidney slot (10), when push rod (15) moves along kidney slot (10) and lead frame is pushed to move forward, cover board (11) covers always
Kidney slot (10).
6. lead frame auto loading machine according to claim 1, it is characterized in that: feeding device (4) includes being undertaken in rail
The platform to be transported (41) of road conveying device (5) the last period, positioned at platform to be transported (41) side and to store lead frame
Material lodging bench (42), delivery track (51) extends on platform to be transported (41) close to the one end of platform to be transported (41),
Platform (41) to be transported is equipped with pusher cylinder (23), and the cylinder rod of pusher cylinder (23) is equipped with to push lead frame edge
Delivery track (51) moves into the pushing block (24) in housing (52), and material lodging bench (42) is equipped with blowing inclined-plane (25), and edge is put
Expect that the gradient direction of inclined-plane (25) is equipped with driving belt (26), material lodging bench (42) is equipped with to drive driving belt (26)
The second driving motor (27) of movement is fixed on driving belt (26) and holds in the palm lead frame bottom on blowing inclined-plane (25) simultaneously
It is additionally provided with to the jacking plate (28) for pushing lead frame to rise, on material lodging bench (42) to will be on blowing inclined-plane (25)
Lead frame is transported to the transshipment acitivity (9) on platform to be transported (41).
7. lead frame auto loading machine according to claim 6, it is characterized in that: transshipment acitivity (9) includes rotation connection
In on material lodging bench (42) rotating bar (91), be fixed on rotating bar (91) suction bar (92), be set to material lodging bench
(42) on and the third driving motor (93) to drive rotating bar (91) to rotate, suction bar (92) are equipped with lead is sucked
The air intake duct (29) of frame can make suction bar (92) draw lead frame from blowing inclined-plane (25) by rotary motion bar (91)
And it is transported on the delivery track (51) of platform to be transported (41).
8. lead frame auto loading machine according to claim 1, it is characterized in that: auto loading device (7) includes accepting
In latter section of track conveying device (5) of photo mounting stand (71), along photo mounting stand (71) short transverse setting vertical guide bracket (72),
Sliding is connected to vertical guide bracket (72) and the mounting box (73) to be connected to each other with delivery track (51), driving mounting box (73)
The third driving portion (74) of up and down motion is additionally provided with box body arrangement platform (31) on photo mounting stand (71) and to push load
The fourth drive part (32) that box (73) is detached from vertical guide bracket (72) and is arranged in box body arrangement platform (31).
9. lead frame auto loading machine according to claim 8, it is characterized in that: third driving portion (74) includes to hold in the palm
Firmly the supporting plate (741) of mounting box (73) bottom, be connected to the driving rack (742) and driving rack on supporting plate (741) top
(742) the driving gear (743) being meshed, the 4th driving motor (744) for driving driving gear (743) to rotate, the 4th driving
Portion (32) includes dragging plate (321), driving dragging plate (321) for arranging platform (31) side far from box body positioned at mounting box (73)
The driving cylinder for driving mounting box (73) to move and be arranged in box body arrangement platform (31) towards box body arrangement platform (31) direction
(322)。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710279421.6A CN107086191B (en) | 2017-04-25 | 2017-04-25 | Lead frame auto loading machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710279421.6A CN107086191B (en) | 2017-04-25 | 2017-04-25 | Lead frame auto loading machine |
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| Publication Number | Publication Date |
|---|---|
| CN107086191A CN107086191A (en) | 2017-08-22 |
| CN107086191B true CN107086191B (en) | 2019-08-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710279421.6A Active CN107086191B (en) | 2017-04-25 | 2017-04-25 | Lead frame auto loading machine |
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