CN106825814B - A kind of pcb board welding method - Google Patents
A kind of pcb board welding method Download PDFInfo
- Publication number
- CN106825814B CN106825814B CN201611219891.5A CN201611219891A CN106825814B CN 106825814 B CN106825814 B CN 106825814B CN 201611219891 A CN201611219891 A CN 201611219891A CN 106825814 B CN106825814 B CN 106825814B
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- welding
- pcb board
- pad
- crucial
- welded
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/36—Electric or electronic devices
- B23K2101/42—Printed circuits
Abstract
This patent application discloses a kind of pcb board welding bench and its working methods, include the following steps：Supporting table is supported returning face plate by step 1；The welding hole on welding unit and returning face plate in alignment support platform；Pcb board is placed on returning face plate by step 2, is welded to pcb board；Step 3 after the completion of pcb board welding, pulls out bandage and is covered on pcb board；Welding unit on welded plate extend into welding hole and pushes against with each crucial pad on pcb board by step 4；Step 5 turns on the switch, and each crucial pad forming circuit on microcontroller and pcb board connects；Step 6, the LED light being arranged on welding unit being correspondingly connected with relay show that welded connecting is abnormal by lighting；Step 7, the photosensitive circuit being arranged in welding unit receive the optical signal starting heating stylus and work of electromagnet of LED light sending；Step 8, electromagnet push heating stylus to crucial pad, and crucial pad is welded in heating stylus again.
Description
Technical field
The present invention relates to electronic technology fields, and in particular to a kind of pcb board welding method.
Background technique
It is now very mature for the welding technique of pcb board.Equipment and tool for welding pcb board generally comprise
For the electric iron placing the welding bench of pcb board and being welded for the crucial pad on pcb board.It is welding now
When pcb board, all it is that first batch welding is completed, then carries out batch detection again.Because being batch processing, some welding mistakes cannot
Contained in time when occurring for the first time, so that subsequent weld also whole mistakes, to the Measuring error work after the completion of welding
Cause very big workload.One piece of pcb board is detected if it can weld one piece of pcb board, can timely correction welded
The same mistake will not be extended on each of batch welding pcb board by the various mistakes generated in journey.But it is existing
Welding equipment be not able to satisfy one piece of pcb board of welding and just detect the demand of one piece of pcb board, for this purpose, applicant has developed
Pcb board welding bench.
This PCB welding bench includes rectangular frame, the shaft being connected on rectangular frame, is connected in shaft and turns around the shaft
Dynamic returning face plate and it is slidably connected at the supporting table for being used to support returning face plate in rectangular frame；Matrix is distributed with more on returning face plate
A welding hole；Bandage is set on returning face plate；The welded plate being slidable in the vertical direction is provided in supporting table；Corresponding welding on welded plate
Hole is equipped with multiple welding units for protruding into welding hole of matrix distribution；Each welding unit includes the circle being arranged on welded plate
Cylinder is arranged in cylinder and the conduction rack coaxial with cylinder and cylinder top is arranged in is used to block the soft of cylinder and conduction rack
Property plate；Flexible board has opening；Conduction rack is hollow reticular structure, and the upper end of conduction rack is hemispherical dome structure, conduction rack
Lower end is the tubular structure being connected to upper end；Welded plate in cylinder is equipped with microcontroller, and conduction rack is electrically connected with microcontroller
It connects；Relay is respectively connected between conduction rack and microcontroller in each welding unit；Relay has been correspondingly connected with setting and has existed
LED light on flexible board.
This block pcb board can be checked at once after having welded one piece of pcb board by this PCB welding bench, in time
Pcb board welding is repaired to lead to the problem of.Therefore, now highly desirable one kind is provided to be able to detect for this pcb board welding bench
Whether each crucial pad welds accurate welding method out, spends the time for reducing the whole of welding pcb board.
Summary of the invention
The invention is intended to provide a kind of pcb board welding method, PCB can not be detected in time to solve existing welding method
Whether each key pad welds accurate problem on plate.
In order to solve the above problem, following scheme is provided：
Scheme one：One of this programme pcb board welding method, includes the following steps：
Returning face plate is turned to around shaft the position with rectangular frame either flush by step 1；Supporting table level is sliding
Enter rectangular frame inner support and lives returning face plate；The welding hole on welding unit and returning face plate in alignment support platform；
Pcb board is placed on returning face plate by step 2, is welded to pcb board；
Step 3 after the completion of pcb board welding, pulls out bandage from the spool on returning face plate and is covered on pcb board and will tie up
Clamping in the free end insertion clamping groove of band；
Step 4, slidably support platform in welded plate, by the welding unit on welded plate extend into welding hole and and PCB
Each crucial pad on plate pushes against；
Step 5 opens the switch being arranged on welded plate, and the microcontroller on welded plate is arranged in by being connected therewith
The relay of connection to connect with each crucial pad forming circuit on pcb board；
Step 6, the LED light being arranged on welding unit being correspondingly connected with relay show that welding connects by lighting
Connect exception.
Beneficial effect：
1. the weldering that the present invention can have found crucial pad by the microcontroller being formed into a loop with crucial pad in time
It whether problematic connects, and intuitively lights the LED light being connect with microcontroller relay by way of lighting to remind behaviour
Author welds problematic herein.Removing pcb board and capable of being clear corresponding is the key that out that pad welds on which position
Problem is connect, subsequent modification operation is conducive to.
2. supporting table has not only acted as the effect of support returning face plate and the pcb board on returning face plate, also by supporting table
The welded plate slided up and down plays the role of the automatic detection to key pad each on pcb board.
3. the present invention efficiently solves existing welding method can not detect that each key pad is on pcb board in time
The accurate problem of no welding.
Scheme two：After step 6, continues through following steps and complete to the crucial weldering of the exception that detected on pcb board
Contact repairs：
Step 7, the photosensitive circuit being arranged in welding unit receive the optical signal of LED light sending and turn optical signal
It is changed to electric signal and is transmitted to microcontroller, the heating stylus and electromagnet that microcontroller connection is arranged in welding unit；
Step 8, electromagnet conducting generate the magnetism opposite with the magnet block connected in heating stylus, and heating stylus is inserted upwardly into
Into crucial pad, heating stylus is heated crucial pad and is welded again to crucial pad.
Scheme three：In step 4, welding unit and crucial pad are corresponded when pushing against, and have bullet on welding unit
The flexible board of property by crucial pad clamping, in hollow reticular structure conduction rack upper end spherical structure by crucial pad
It wraps.
Crucial pad is fixed in each welding unit, while will be goed deep into each welding unit with flexible board
The device of setting itself is all independent with other welding units in crucial pad and welding unit, makes each welding unit
An independent operating unit can be become together with its corresponding crucial pad.Be conducive to the same phase of each crucial pad
Mutually independently is detected and repaired.
When protruding into welding hole, flexible board plays the role of clamping crucial pad welding unit, because flexible board has
Flexible, during crucial pad is pierced into downwards across opening, flexible board wipes the scolding tin adhered on crucial pad off
Slag plays cleaning action, is conducive to conduction rack below and more accurately receives and transmit the electric current letter come from the transmitting of crucial pad
Number.
Scheme four：In step 6, the connection of LED light and relay in the different corresponding welding units of crucial pad
It is different.
What each key pad had should be connected to, and should disconnecting for having is not connected to, and LED light is all prompted by lighting
Abnormal welding, so the connection of the LED light in the corresponding welding unit of different key pads also just should be different.It should connect
On the logical corresponding welding unit of crucial pad, LED light is connected to the normal open switch of relay.Should disconnected key
On the corresponding welding unit of pad, LED light is connected to the normally closed switch of relay.
Scheme five：In step 8, if it is the key that when disconnecting pad that welding unit is corresponding, microcontroller exists
Hair dryer and suction ventilator are simultaneously turned on when receiving the electric signal that photosensitive circuit transmitting comes.
By hair dryer and suction ventilator, the scolding tin be connected being adhered on the crucial pad that should be disconnected,
It is blown away after heating stylus is melted.Complete the amendment of welding mistake.
Scheme six：In step 8, by hair dryer and suction ventilator be separately positioned on conduction rack two sides and all alignments it is crucial
The blowing circuit that the position of pad, hair dryer and suction ventilator are formed blows out the scolding tin that needle thawing is heated on crucial pad
It goes.
The crucial pad of pcb board is fixed in welding hole by the present invention by returning face plate and bandage, by with each pass
The one-to-one welding unit of key pad detects the welding situation of each crucial pad.Wherein, according to pcb board
Design, the different corresponding welding units of crucial pad have difference in the connection of LED light.In the key weldering that should be connected to
On the corresponding welding unit of contact, LED light is connected to the normal open switch of relay.Should disconnected crucial pad it is corresponding
Welding unit on, LED light is connected to the normally closed switch of relay.
Crucial pad is detected automatically by the conducting situation in each conduction rack and the circuit of crucial pad formation
Weld situation.Lighting situation and show the company of the crucial pad in the circuit by the LED light that is connected in each circuit
Connect exception.The abnormal prompt of LED light sending can be received automatically by the photosensitive circuit in welding unit, and pass through microcontroller
So that the corresponding electronic device such as heater circuit, electromagnet, suction ventilator and hair dryer is started to work, is automatically performed to crucial pad
Processing again.
Luminous LED light and photosensitive photosensitive circuit are all in an independent welding unit, each other by cylinder
Barrel block it is independent of each other.Each welding unit is an absolute construction, can be simultaneously to all keys on pcb board
Pad is detected and is handled.It substantially reduces the artificial welding situation of detection one by one and then changes the behaviour that tool welds again again
Make the time.The whole process that the present invention welds welding, detection and maintenance again is automatically performed, and is improved pcb board and is welded accuracy
While saved the operating time.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of PCB welding bench used in the embodiment of the present invention.
Fig. 2 is the structural schematic diagram of the welding unit of PCB welding bench used in the embodiment of the present invention.
Specific embodiment
Below by specific embodiment, the present invention is described in further detail：
Appended drawing reference in Figure of description includes：Rectangular frame 1, shaft 2, returning face plate 3, spool 4, clamping groove 5, support
Platform 6, handle 7, welded plate 8, flexible board 9, conduction rack 10, heating stylus 11, spring 12, electromagnet 13, hair dryer 14, suction ventilator
15, cylinder 16, welding hole 17.
As shown in Figure 1, PCB welding bench used in the present embodiment, including rectangular frame 1, mortise-tenon joint are in rectangular frame 1
Shaft 2 between two sides of top surface and be socketed in shaft 2 can be with the returning face plate 3 of around the shaft 2 rotations；Wherein, shaft 2
In on the perpendicular bisector position of returning face plate 3.The welding hole 17 of 36 rectangular configurations is distributed in matrix on returning face plate 3；Returning face plate 3
It is opened positioned at the leftward position of shaft 2 and right positions there are two corresponding groove on top surface.Rotation connection in the groove in left side
There is spool 4, five coaxial bandages side by side can be separately pulled out from spool 4.The groove inner-use clapboard and shackle member on right side
It is mounted to five clamping grooves 5.The metal lump that can be clamped with clamping groove 5 is installed on the free end of five bandages.Bandage can
To be connected between spool 4 and clamping groove 5.
It can select the bandage of different location that pcb board is fixed on returning face plate 3 according to the needs of welding and detection.
Being left uncovered part can be used to other operations such as weld pcb board, clean.Meanwhile bandage can be by pcb board
It is pressed on the top of welding hole 17, it is convenient to enter welding hole 17 to the pcb board being pressed into welding hole 17 from the bottom end of welding hole 17
On each crucial pad detect the either operation such as welding again.
Horizontal slide is equipped between the top and bottom of rectangular frame 1, it is sliding that two supporting tables 6 are slidably connected at this level
In road.And the top surface of two supporting tables 6 is in contact with the bottom surface of returning face plate 3, for withstanding returning face plate 3, plays branch to returning face plate 3
Support, effect that is fixed, preventing its overturning.It is equipped on the outer position in the top surface of two supporting tables 6 convenient for the recessed of manpower pulling
The handle 7 of slot type, will not only destroy the apical side height of supporting table 6, but also facilitates manpower to hold handle 7 and slide in and out supporting table 6.
There are four screw rods for installation along the vertical direction in each supporting table 6, and being equipped on four screw rods can be above and below screw rod
The screw rodb base of movement.For rotating the turn knob that adjusting threaded rod moves up and down, the stretching rectangular frame 1 of supporting table 6 is set
On one side.Turn knob is mounted on welded plate 8.Welded plate 8 is connected on four screw rodb bases.Corresponding weldering on welded plate 8
It connects hole 17 and is welded with 36 that matrix the is distributed welding units that can protrude into welding hole 17.
As shown in Fig. 2, each welding unit include the cylinder 16 being arranged on welded plate 8, be arranged in cylinder 16 and with
The coaxial conduction rack 10 of cylinder 16 and 16 top of cylinder is set it is used to block the flexible board 9 of cylinder 16 and conduction rack 10；It is soft
Property plate 9 be with elasticity and transparent silica gel plate；The centre of flexible board 9, which is provided with, can pass through flexible board 9 for crucial pad
Linear type opening；Conduction rack 10 is hollow reticular structure, and the upper end of conduction rack 10 is the hemisphere for wrapping up crucial pad
Shape, the lower end of conduction rack 10 are the tubular structure being connected to upper end；Because the scolding tin node that welding generates is mostly spherical shape, with
The crucial pad that hemispheric conduction rack 10 comes on connecting PCB board can generate more firm and bigger contact area company with it
Relationship is connect, be conducive to subsequent detection accurately and pushes against crucial pad.
It is provided with groove on welded plate 8, microcontroller and the photosensitive circuit connecting with microcontroller, heating are connected in groove
Circuit and electromagnet 13.The switch connecting with the major loop that microcontroller is formed is arranged on the middle position of turn knob.
It is located at sequentially connected spring 12 in 16 axial location of cylinder on welded plate 8 and conduction rack 10 can be run through along 16 axis direction of cylinder
Heating stylus 11；Heating stylus 11 is connect by conducting wire with heater circuit.Heating stylus 11 is wrapped with columned magnet block；Electromagnetism
Iron 13, magnet block, heating stylus 11 and the spring 12 of connection heating stylus 11 are all located in the tubular portion of 10 lower end of conduction rack
Between position.Spring 12 is located in conduction rack 10 and along 10 stretching motion of conduction rack.Conduction rack 10 is relative to spring 12 and heating
Needle 11, plays guiding role, and heating stylus 11 is allow accurately to touch crucial pad as soon as possible.
It is provided with the hair dryer 14 and suction ventilator 15 connecting respectively with microcontroller on welded plate 8 in cylinder 16, dries
Machine 14 and suction ventilator 15 are located at the two sides of conduction rack 10.Because conduction rack 10 is hollow reticular structure, pass through hair dryer
14 can blow off the scolding tin slag on crucial pad, and form the solder ball rapid condensation of the crucial pad newly formed.
The scolding tin slag that heating stylus 11 is generated when welding again can be siphoned away by suction ventilator 15, clean the environment inside cylinder 16.
Microcontroller can use common STM32F103 single-chip microcontroller.Photosensitive circuit is mainly one and connects with microcontroller
The logical circuit for having photo resistance.Heater circuit is mainly the circuit for having resistive heater being connected to microcontroller.Add
Hot water radiation wire is just mounted in heating stylus 11.Heating stylus 11 is a hollow copper shell.It will be heated using the thermal conductive resin of copper
The heat that resistance wire generates quickly is transmitted in the solder ball that crucial welding spot welding is formed, and is welded again to crucial pad
It connects.
Conduction rack 10 is a conductive metal net shaped frame structure, and conduction rack 10 is connected to microcontroller.Each key
The conduction rack 10 of pad is connected with relay between microcontroller；Each relay, which has been correspondingly connected with, to be arranged in flexibility
The LED light for being used to show welding situation on plate 9；Microcontroller is by being connected the different relays pass different come communication with detection
Connection relationship between key pad.
According to the regulation of pcb board layout design, when a crucial welding node is to need to be connected to, with this key
LED light on the corresponding welding unit of welding node is connected to the normal open switch of relay, when relay conducting, explanation
Key welding node contact is good, and the LED light being connected to normal open switch is not lighted.Only when this crucial welding node welding
It is problematic, microcontroller is exporting electric signal and relay not in the route connecting with crucial welding node to relay
It is formed into a loop and is connected, LED light is lighted at this time, shows abnormal welding herein.Photo resistance in photosensitive circuit receives LED light
Electric signal is converted to after the optical signal launched and passes to microcontroller, and microcontroller is connected to heater circuit and electromagnet 13.Add
Hot water radiation wire generates heat, heats heating stylus 11, and electromagnet 13 generates the polarity opposite with magnet block for magnet block and heating
Needle 11 is pushed in the solder ball of the joint pad to offset with conduction rack 10 formation.Heating stylus 11 melts scolding tin and utilizes these welderings
Tin welds crucial pad again.After the completion of welding, microcontroller according to pre-set weld interval, disconnect heater circuit and
Electromagnet 13.Electromagnet 13, which loses magnetism no longer to repel, pushes magnet block.Heating stylus 11 and magnet block are connect with heating stylus 11
Spring 12 be withdrawn on welded plate 8.Microcontroller is connected to hair dryer 14 and suction ventilator according to preset delay command
15, scolding tin slag that welding generates is blown off and pcb board and is siphoned away by suction ventilator 15.
When a crucial welding node is to need not to be connected to disconnect, weldering corresponding with this key welding node
Order member on LED light be connected to the normally closed switch of relay, when relay with key pad formation circuit be connected when
It waits, the case where illustrating the key welding node there are adhesions, the LED light being connected to normally closed switch is lighted.Photo resistance receives
Optical signal is simultaneously converted to electric signal and passes to microcontroller in this welding unit, and microcontroller output electric signal makes hair dryer
14, suction ventilator 15, electromagnet 13 and heater circuit work, electromagnet 13 generate repulsive force and shift heating station onto crucial pad
Place, heating stylus 11 are heated the solder ball that crucial pad is formed and are melted, and hair dryer 14 melts scolding tin in heating stylus 11
Liquefied scolding tin is blown away in the process, suction ventilator 15 is siphoned away blocking scolding tin waste residue is gradually condensed.Complete crucial pad
Scolding tin cleaning after, microcontroller according to pre-set delay command make hair dryer 14, suction ventilator 15, electromagnet 13 and add
Heater circuit stops working.Heating stylus 11 is retracted original position by spring 12.
Wherein, just it is arranged on the center of turn knob for starting the switch of microcontroller place loop works.
The screw rod and threaded rod connecting with turn knob are all hollow structures, switch the conducting wire that is connect with microcontroller just pass through screw rod and
The hollow pipeline that screwed pipe is formed carries out cabling.
Microcontroller used herein be common single-chip microcontroller STM32, used in such as delay command, conducting and
The orders such as disconnection are all disclosure of that on its technical manual, are the common means of those skilled in the art.In addition to STM32,
There can also be any control chip of these functions using other.
In the present embodiment, the working method of PCB welding bench includes the following steps：
Returning face plate 3 is turned to around shaft 2 position with 1 either flush of rectangular frame by step 1；By 6 water of supporting table
Smoothly enter 1 inner support of rectangular frame and lives returning face plate 3；The welding hole 17 on welding unit and returning face plate 3 in alignment support platform 6；
Pcb board is placed on returning face plate 3, welds to pcb board by step 2；
Step 3, after the completion of pcb board welding, pull-out bandage is covered on pcb board and will from the spool 4 on returning face plate 3
Clamping in the free end insertion clamping groove 5 of bandage；
Step 4, rotates turn knob, and the welding unit on welded plate 8 is extend into welding hole by upward sliding welded plate 8
In 17, the hemisphere portion of 10 upper end of conduction rack crucial pad corresponding on pcb board is pushed against；
Step 5, opens the switch being arranged among turn knob, and the microcontroller being arranged on welded plate 8 passes through conducting
The relay being attached thereto to connect with each crucial pad forming circuit on pcb board；
The microcontroller being arranged on welded plate 8 detects crucial weldering by the way that the relay connecting with crucial pad is connected
Whether the welding of contact is correct；
Step 6 connects according to the conducting situation in the circuit that relay in step 5 and crucial pad are formed with relay
The LED light being arranged on flexible board 9 connect shows that welded connecting is abnormal by lighting；
Step 7, the photosensitive circuit being arranged in welding unit receive the optical signal of LED light sending and turn optical signal
It is changed to electric signal and is transmitted to microcontroller, microcontroller is connected to the heating stylus being arranged in welding unit by another relay
11 and electromagnet 13；
Step 8, the conducting of electromagnet 13 generate the magnetism opposite with the magnet block connected in heating stylus 11, heating stylus 11 to
On be inserted into crucial pad, heating stylus 11 is heated crucial pad and is welded again to crucial pad.
In step 4, welding unit and crucial pad are corresponded when pushing against, flexible board by crucial pad clamping,
Crucial pad is wrapped in the spherical structure of the conduction rack upper end of hollow reticular structure.
Crucial pad is fixed in each welding unit, while will be goed deep into each welding unit with flexible board
The device of setting itself is all independent with other welding units in crucial pad and welding unit, makes each welding unit
An independent operating unit can be become together with its corresponding crucial pad.Be conducive to the same phase of each crucial pad
Mutually independently is detected and repaired.
In step 6, the connection of LED light is different in the different corresponding welding units of crucial pad.
What each key pad had should be connected to, and should disconnecting for having is not connected to, and LED light is all prompted by lighting
Abnormal welding, so the connection of the LED light in the corresponding welding unit of different key pads also just should be different.It should connect
On the logical corresponding welding unit of crucial pad, LED light is connected to the normal open switch of relay.Should disconnected key
On the corresponding welding unit of pad, LED light is connected to the normally closed switch of relay.
In step 8, if it is the key that when disconnecting pad that welding unit is corresponding, microcontroller is being received
Hair dryer and suction ventilator are simultaneously turned on when the electric signal that photo resistance transmitting comes.
By hair dryer and suction ventilator, the scolding tin be connected being adhered on the crucial pad that should be disconnected,
It is blown away after heating stylus is melted.Complete the amendment of welding mistake.
In step 8, hair dryer and suction ventilator are separately positioned on the two sides of conduction rack and are all directed at crucial pad
The scolding tin that needle thawing is heated on crucial pad is blown out by the blowing circuit that position, hair dryer and suction ventilator are formed.
What has been described above is only an embodiment of the present invention, and the common sense such as well known specific structure and characteristic are not made herein in scheme
Excessive description, technical field that the present invention belongs to is all before one skilled in the art know the applying date or priority date
Ordinary technical knowledge can know the prior art all in the field, and have using routine experiment hand before the date
The ability of section, one skilled in the art can improve and be implemented in conjunction with self-ability under the enlightenment that the application provides
This programme, some typical known features or known method should not become one skilled in the art and implement the application
Obstacle.It should be pointed out that for those skilled in the art, without departing from the structure of the invention, can also make
Several modifications and improvements out, these also should be considered as protection scope of the present invention, these all will not influence the effect that the present invention is implemented
Fruit and patent practicability.The scope of protection required by this application should be based on the content of the claims, the tool in specification
The records such as body embodiment can be used for explaining the content of claim.
Claims (5)
1. a kind of pcb board welding method, it is characterised in that：Including PCB welding bench, PCB welding bench includes rectangular frame, is connected to
The shaft of rectangular frame top surface and it is socketed in the returning face plate that can be rotated around the axis in shaft；If matrix is distributed on returning face plate
Dry welding hole；It opens there are two corresponding groove the overturning upper two sides in shaft of plate top surface；Rotation connection in the groove of side
There is spool, is equipped with bandage in spool；Clamping groove is equipped in the groove of the other side, the free end of bandage is connected in clamping groove；
Horizontal slide is equipped between the top and bottom of rectangular frame, two supporting tables are slidably connected in horizontal slide, and two
The top surface of supporting table is in contact with the bottom surface of returning face plate；
Screw rod is installed along the vertical direction in each supporting table, welded plate, corresponding welding on welded plate are connected on screw rodb base
Hole is welded with the welding unit of matrix distribution；
Each welding unit include the cylinder being arranged on welded plate, be arranged in cylinder and the conduction rack coaxial with cylinder and
The flexible board that cylinder top is used to block cylinder and conduction rack is set；
Groove is provided on welded plate, the photosensitive circuit and electromagnet that microcontroller is connected in groove and is connect with microcontroller,
The switch being connect with the major loop that microcontroller is formed；It is located at sequentially connected spring and can on cylinder axis position on welded plate
Run through the heating stylus of conduction rack along cylinder axis direction；Heating stylus is wrapped with magnet block；
Conduction rack is connected with LED light between microcontroller；
Pcb board welding method includes the following steps：
Returning face plate is turned to around shaft the position with rectangular frame either flush by step 1；Supporting table is slid horizontally into square
Shape frame inner support lives returning face plate；The welding hole on welding unit and returning face plate in alignment support platform；
Pcb board is placed on returning face plate by step 2, is welded to pcb board；
Step 3 after the completion of pcb board welding, pulls out bandage from the spool on returning face plate and is covered on pcb board and by bandage
Clamping in clamping groove is inserted into free end；
Step 4, slidably support platform in welded plate, by the welding unit on welded plate extend into welding hole and on pcb board
Each crucial pad push against；
Step 5, opens the switch being arranged on welded plate, and the microcontroller being arranged on welded plate is attached thereto by conducting
Relay come and each crucial pad forming circuit on pcb board connects；
Step 6, the LED light being arranged on welding unit being correspondingly connected with relay show that welded connecting is different by lighting
Often；
Step 7, the photosensitive circuit being arranged in welding unit receive the optical signal of LED light sending and convert optical signals to
Electric signal is transmitted to microcontroller, the heating stylus and electromagnet that microcontroller connection is arranged in welding unit；
Step 8, electromagnet conducting generate the magnetism opposite with the magnet block connected in heating stylus, and heating stylus is inserted upwardly into pass
In key pad, heating stylus is heated crucial pad and is welded again to crucial pad.
2. pcb board welding method according to claim 1, it is characterised in that：In step 4, welding unit and crucial weldering
When contact corresponds abutting, flexible flexible board is in hollow reticular structure by crucial pad clamping on welding unit
The spherical structure of conduction rack upper end crucial pad is wrapped.
3. pcb board welding method according to claim 1, it is characterised in that：In step 6, different crucial pads
LED light is different from the connection of relay in corresponding welding unit.
4. pcb board welding method according to claim 1, it is characterised in that：In step 8, if welding unit is corresponding
It is the key that when disconnecting pad, microcontroller simultaneously turns on blowing when receiving the electric signal that photosensitive circuit transmitting comes
Machine and suction ventilator.
5. pcb board welding method according to claim 4, it is characterised in that：In step 8, by hair dryer and suction ventilator
It is separately positioned on the two sides of conduction rack and is all directed at the position of crucial pad, the blowing circuit that hair dryer and suction ventilator are formed will
The scolding tin that needle thawing is heated on crucial pad is blown out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611219891.5A CN106825814B (en) | 2016-12-26 | 2016-12-26 | A kind of pcb board welding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611219891.5A CN106825814B (en) | 2016-12-26 | 2016-12-26 | A kind of pcb board welding method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106825814A CN106825814A (en) | 2017-06-13 |
| CN106825814B true CN106825814B (en) | 2018-11-20 |
Family
ID=59136847
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611219891.5A Active CN106825814B (en) | 2016-12-26 | 2016-12-26 | A kind of pcb board welding method |
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