CN109862706A - A kind of circuit board printing process - Google Patents
A kind of circuit board printing process Download PDFInfo
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- CN109862706A CN109862706A CN201910065125.5A CN201910065125A CN109862706A CN 109862706 A CN109862706 A CN 109862706A CN 201910065125 A CN201910065125 A CN 201910065125A CN 109862706 A CN109862706 A CN 109862706A
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Abstract
The invention discloses a kind of circuit board printing process, the circuit board printing process is comprised the following steps that: S1: cutting copper-clad plate into required size；S2: the copper-clad plate cut is pre-processed；S3: pretreated copper-clad plate is subjected to route printing by printing machine；S4: the copper-clad plate being completed for printing is dried in ultraviolet light drying box；S5: the copper-clad plate after drying is put into etching solution and is performed etching；S6: the copper-clad plate after acid etching is removed printing film process；S7: the copper-clad plate after removal print film is subjected to symbol printing；S8: the copper-clad plate for printing symbol is subjected to boring positioning；By above-mentioned eight steps, finished circuit board is obtained.The present invention has the effect of improving etch rate.
Description
Technical field
The present invention relates to the technical fields of circuit board making, more particularly, to a kind of circuit board printing process.
Background technique
Circuit board printing be by copper-clad plate by printed wire, etching, punching and etc. be fabricated to and be used to assemble circuit elements
The circuit board of gas part.
Existing circuit board printing process generally includes to cut out plate, pickling, printing, etches, moves back the processes such as film, drilling, wherein
Etching process is exactly that, in addition to the copper foil for being printed with route all corrodes, will leave behind route in copper-clad plate.Usually used erosion
Quarter liquid is iron chloride etching solution, redox reaction occurs by iron chloride and copper, so that unwanted copper is all etched removal.
But the waste water that generates is more after iron chloride etching, processing Expenses Cost is high, thus now commonly used copper chloride pickling solution into
Row etching, but the etching speed of copper chloride pickling solution is excessively slow, etching efficiency is too low.
Summary of the invention
In view of the deficiencies of the prior art, the present invention intends to provide a kind of circuit board printing process, by adding
Enter hydrogen peroxide and additive makes the cuprous ion in etching process in etching solution be oxidized to copper ion, to improve reaction speed
Rate.
Above-mentioned purpose of the invention has the technical scheme that
A kind of circuit board printing process, the circuit board printing process comprise the following steps that:
S1: copper-clad plate is cut into required size；
S2: the copper-clad plate cut is pre-processed；
S3: pretreated copper-clad plate is subjected to route printing by printing machine；
S4: the copper-clad plate being completed for printing is dried with drying box；
S5: the copper-clad plate after drying being put into etching solution and is performed etching, and the etching solution includes following parts by weight
Component:
S6: the copper-clad plate after etching is removed printing film process；
S7: the copper-clad plate after removal print film is subjected to symbol printing；
S8: the copper-clad plate for being coated with separating film layer carries out boring positioning；
By above-mentioned eight steps, finished circuit board is obtained.
By using above-mentioned technical proposal, copper-clad plate first passes through cutting and is divided into specification consistent from larger-size raw material plate
Processing plate, then again by preprocessing process by the greasy dirt and oxide removal on copper sheet surface, so that copper sheet surface is become clean
Only.Then required route is passed through into the screen painting made to the surface of copper-clad plate again, so that copper sheet is when being etched, line
Road can be protected from being corroded.Then it is heating and curing route by ultraviolet light again, ultraviolet light heat temperature raising block, and can reduce
Oxidation.Then copper-clad plate is put into etching solution again and is etched, in addition to the copper foil under route is not corroded, its in copper-clad plate
He is etched corrosion by copper foil, to leave behind required route in copper-clad plate.Then covering after etching solution will be washed away again
The protective film on route on copper sheet washes away, and obtains semi-finished product circuit board.Then upper necessary symbol is printed on circuit boards again,
And it applies and is covered with isolation film protection circuit.Finally the node for needing connecting element on circuit board is drilled again.
Copper by reacting with copper chloride and concentrated hydrochloric acid, generates stannous chloride in etching solution, thus by copper-clad plate in addition to
Copper foil outside route, which etches, to be removed.The stannous chloride in etching solution after etching generates chlorination again under the oxidation of hydrogen peroxide
Copper improves resource utilization so that etching solution can be recycled.
The present invention is further arranged to: being added with pretreatment fluid, the pretreatment fluid packet in the S2 step in pretreatment
Include the component of following parts by weight:
Neopelex and coco-nut oil fatty acid diethanol by using above-mentioned technical proposal, in pretreatment fluid
Amide is emulsifier, has emulsification to greasy dirt, and lipophilic group coats greasy dirt, O/W micella is formed, to make copper-clad plate surface
Greasy dirt dissolution, is removed.Sodium secondary alkyl sulfonate is also to play soil washing, and secondary alkyl sulfonic acid to greasy dirt as emulsifier
The compatibility of sodium and neopelex is fine, and can significantly improve the emulsifying effectiveness of emulsification system.In pickling solution
Acid be mainly used for carrying out dissolution removal to the oxide on copper surface, avoid oxide influence copper surface clean level.
The present invention is further arranged to: include following components in percentage by weight in the additive in the step S5:
Poly- P-ethoxyphellylurea 60-80%；
Polyoxyethylene ether 10-15%；
Potassium chloride 5-30%.
By using above-mentioned technical proposal, poly- P-ethoxyphellylurea and polyoxyethylene ether meet formed after copper face one layer it is very thin
Film is disintegrated by injection, and pressure acts only on front side films, and the film of route side plays protection circuit without disintegrating because pressure is small,
The effect of anti-lateral erosion, while it also accelerates copper outermost electronics, copper becomes vivaciously, more oxidizable Cu and Cu+, have apparent
Acceleration.
The present invention is further arranged to: in the S5 step control etching solution spray pressure be 0.2MPa-0.3MPa it
Between, etching solution temperature is controlled at 50-55 DEG C.
By using above-mentioned technical proposal, when pressure of the etching solution when spray arrives copper-clad plate surface is lower than 0.2MPa, erosion
Quarter, liquid was too low to the normal pressure on copper-clad plate surface, and etching solution reduces the corrosion rate of copper, and when the pressure of spray is higher than
When 0.3MPa, etching solution is excessively high to the normal pressure on copper-clad plate surface, so that copper-clad plate, during being corroded, etching solution can be by line
The film that the additive in trackside face is formed is broken up, to generate certain lateral erosion to route, influences the integrality of route.Temperature liter
Height can accelerate the rate of etching, but when temperature is higher than 55 DEG C, the HCl in etching solution can be made excessively to volatilize, to make
The component of etching solution is affected imbalance so that etch effect variation.
The present invention is further arranged to: when the concentration of hydrochloric acid is lower than the 1/ of initial additive amount in the S5 step etching process
When 2, hydrochloric acid is added to 1.3-1.5 times of initial concentration.
By using above-mentioned technical proposal, hydrochloric acid is consumed due to participating in etching reaction in etching process, adds hydrochloric acid
To maintain the stabilization of etching solution, and extra hydrochloric acid can be with Cu2+And Cu+Complex ion is formed, so that the Cu in solution+Subtract
It is few, to increase etch-rate, and the molten amount of copper in etching solution is improved to a certain extent.
The present invention is further arranged to: the printing machine includes feed device, and the side of feed device is equipped with printing dress
It sets；
The feed device includes rotary shafts, and the side of the rotary shafts is equipped with elevating mechanism, close to elevator
Pulling mechanism is installed in rotary shafts at the top of structure, is provided with pressing mechanism in the rotary shafts of pulling mechanism；
The elevating mechanism includes elevating lever, and the elevating lever both ends are fixedly linked with rotary shafts, on the elevating lever
Be slidably fitted with and put a frame, the first driving motor is installed on the roof of the rotary shafts, first driving motor it is defeated
It is connected with first gear on shaft, second gear, the first gear and the second tooth are installed on the bottom wall of the rotary shafts
First transmission chain is installed, first transmission chain is connected with a frame of putting on wheel；
The rotary shafts are equipped with locating rack close to the side of elevating mechanism, and the pulling mechanism includes adjusting component,
The adjusting component includes adjustable plate, and the adjustable plate is slidably mounted on locating rack, and the locating rack is close to rotary shafts
Side is equipped with the first cylinder, and the piston rod of first cylinder is connected with the adjustable plate；The length of the adjustable plate is greater than
The width of locating rack, the both ends of the adjustable plate offer sliding eye, are equipped with the second cylinder on the adjustable plate, and described second
Be connected with the second mounting blocks on the piston rod of cylinder, the both ends of the mounting blocks are connected with adjusting rod, the adjusting rod with it is described
Sliding eye sliding is connected, and one end that the adjusting rod passes through sliding eye is connected with drawing assembly, and drawing assembly includes sucker, sucker
It is connected with adjusting rod, air pump is installed in rotary shafts, the gas outlet of air pump is connected with tracheae, and tracheae is separate to be connected with air pump
One end is connected with sucker；
The pressing mechanism includes fixed block, and the fixed block is mounted on locating rack, and is offered on the fixed block
One telescopic chute is slidably fitted with telescopic block in first telescopic chute, the fixation by air cylinder is equipped on the locating rack
Telescopic hole is offered on block, the telescopic hole is connected to the first telescopic chute, the piston rod by air cylinder pass through telescopic hole with
Telescopic block is connected, and the telescopic block is connected with pressing roller far from the one end being connected by air cylinder.
The present invention is further arranged to: swing mechanism is installed on the locating rack, the swing mechanism includes link block,
Described link block one end is connected with the locating rack, is equipped with swing arm on the other end of the link block, the swing arm with
The link block is hinged, and one end of the swing arm is connected with the piston rod for the oscillating cylinder being mounted on locating rack, the pendulum
The other end of swing arm is rotatably connected to by pinch roller；
The both ends of the elevating mechanism are provided with limit assembly, and the limit assembly includes position-limited rack, on the position-limited rack
Threaded hole is offered, the position-limited rack is provided with handler far from the side of elevating mechanism, is connected with second on the handler
Screw rod, second screw rod are threadedly coupled with threaded hole, and one end that second screw rod passes through threaded hole is connected with limit plate；Institute
It states and offers third location hole on position-limited rack, the position-limited rack is provided with locating support far from the side of elevating mechanism, described fixed
Connecting hole is offered on the bracket of position, second screw rod is rotatedly connected with connecting hole, is also connected with second on the locating support
Locating rod, second locating rod pass through third location hole and are connected with limit plate.
The present invention is further arranged to: positioning mechanism is provided on the workbench, work director in edge on the workbench
Degree direction offers first positioning hole, and the width direction on the workbench along workbench offers second location hole, the work
Make that the first locating rod and the second locating rod are installed in platform, actuator, the actuator are installed on the side wall of the workbench
It is connected with one end of the first locating rod and the second locating rod, the other end of first locating rod and the second locating rod is connected with fixed
Position block, the locating piece are connected with first positioning hole and second location hole sliding；
The locating piece is removably mounted in the first locating rod and the second locating rod；Second is offered on the locating piece
Telescopic chute is equipped with spring in second telescopic chute, and one end of the spring is connected with the slot bottom of the second telescopic chute, the bullet
The other end of spring is connected with locking piece, and one end that first locating rod and the second locating rod are connected with locating piece offers one
Above locating slot, the locating piece and locating slot are clamped, and are offered on the side wall of first locating rod and the second locating rod
Locking hole, the locking hole are connected to locating slot, and described locking piece is clamped with locking hole；
Driving cylinder is installed, the piston rod of the driving cylinder is connected with the first drive block, the driving on workbench
Part includes the second driving motor, is equipped with the second driving motor, the output of second driving motor on first drive block
It is connected with the 5th gear on axis, the 6th gear, first locating rod and the second positioning are also equipped on first drive block
The separate one end being connected with locating piece of bar is provided with double wedge, and first locating rod and the second locating rod pass through double wedge and the 5th tooth
Wheel is meshed with the 6th gear.
The present invention is further arranged to: the side hydraulic cylinder of the workbench, is equipped on the piston rod of the hydraulic cylinder
Sliding rack, sliding motor is equipped in the sliding rack, and the sliding rack offers slippage slot, one end installation of the slippage slot
There is third gear, the output shaft of the sliding motor is connected across sliding rack third gear, the other end installation of the slippage slot
There is the 4th gear, the second transmission chain is installed on the third gear and the 4th gear, is slidably fitted with cunning in the slippage slot
Displacement arm, the sliding arm are connected with the second transmission chain, and the separate one end being connected with sliding rack of the sliding arm is equipped with driving machine
Structure is equipped with the first scraper and the second scraper in the driving mechanism；Net is connected in sliding rack below the driving mechanism
Plate rack is equipped with halftone in the screen frame；First scraper and the second scraper and halftone are inconsistent；
The driving mechanism includes the first cylinder and the second cylinder, and first cylinder and the second cylinder are mounted on sliding wall
On, the piston rod of first cylinder and the second cylinder is connected with the second drive block, and the both ends of second drive block are connected with
Drive rod, described slide offer the drive hole that cooperation drive rod uses on arm, the drive rod passes through drive hole and scrapes with first
Knife and the second scraper are connected.
Compared with prior art, the beneficial effects of the present invention are:
1, the etch effect for promoting etching solution by adding additive in etching solution, improves etch-rate, and additive
In the protective film that is formed of poly- P-ethoxyphellylurea can protect the side of route and be not corroded, the circuit board after improving etching
Quality；
2, by adding hydrochloric acid in etching process, so that the Cu in solution2+And Cu+Complex ion is formed, to improve
The rate of etching.
Detailed description of the invention
Fig. 1 is the perspective view of printing machine；
Fig. 2 is the perspective view of feed device；
Fig. 3 is the perspective view of elevating mechanism；
Fig. 4 is the perspective view of workbench and positioning mechanism；
Fig. 5 is the perspective view of driving mechanism；
Fig. 6 is the cross-sectional view of locating piece and the first locating rod, for showing the installation relation of locating piece and the first locating rod；
Fig. 7 is the perspective view of printing equipment.
Appended drawing reference: 11, rotary shafts；111, locating rack；12, pulling mechanism；121, component is adjusted；122, adjustable plate；
123, the first cylinder；124, sliding eye；125, the second cylinder；126, the second mounting blocks；127, adjusting rod；13, elevating mechanism；
131, elevating lever；132, a frame is put；133, the first driving motor；134, first gear；135, second gear；136, the first transmission
Chain；137, a roller is put；138, lift span；14, pressing mechanism；141, fixed block；142, telescopic chute；143, telescopic block；144, it presses
Air cylinder；145, telescopic hole；146, pressing roller；15, drawing assembly；151, air pump；152, sucker；153, tracheae；16, it swings
Mechanism；161, link block；162, swing arm；163, oscillating cylinder；164, pinch roller is pressed；17, limit assembly；171, position-limited rack；
172, threaded hole；173, handler；174, the second screw rod；175, limit plate；176, third location hole；177, locating support；
178, connecting hole；179, the second locating rod；21, workbench；211, positioning mechanism；212, first positioning hole；213, the second positioning
Hole；214, the first locating rod；216, actuator；217, locating piece；22, telescopic chute；221, spring；222, locking piece；223, fixed
Position slot；224, locking hole；225, cylinder is driven；226, the first drive block；227, the second driving motor；228, the 5th gear；
229, the 6th gear；23, double wedge；231, hydraulic cylinder；232, sliding rack；233, motor is slid；234, third gear；235, the 4th
Gear；236, the second transmission chain；237, arm is slid；24, driving mechanism；241, the first scraper；242, the second scraper；243, halftone
Frame；244, halftone；245, third cylinder；246, the 4th cylinder；247, the second drive block；248, drive rod；249, drive hole.
Specific embodiment
With reference to the accompanying drawings and examples, the present invention will be described in detail.
A kind of circuit board printing process disclosed by the invention, comprises the following steps that:
S1: copper-clad plate is cut into required size；
S2: the copper-clad plate cut is immersed in pretreatment fluid and is pre-processed, pretreatment fluid includes following parts by weight
Component:
S3: pretreated copper-clad plate is subjected to route printing by printing machine；
S4: the copper-clad plate being completed for printing is dried in ultraviolet light drying box；
S5: the copper-clad plate after drying being put into etching solution and is performed etching, and the spray pressure for controlling etching solution is 0.2MPa
Between, etching solution temperature is controlled at 50 DEG C, in etching process when the concentration of hydrochloric acid is lower than the 1/2 of initial additive amount, adds salt
Acid is to 1.3 times of initial concentration；
Etching solution includes the component of following parts by weight:
Include the component of following parts by weight in additive:
Poly- P-ethoxyphellylurea 60%；
Polyoxyethylene ether 10%；
Potassium chloride 30%；
S6: the copper-clad plate after etching is removed printing film process by spraying alkaline solution；
S7: the copper-clad plate after removal print film is sent on symbol printing mechanism and carries out symbol printing；
S8: the copper-clad plate for printing symbol is subjected to boring positioning；
By above-mentioned eight steps, finished circuit board is obtained.
Referring to Fig.1, the printing machine in step S5 includes feed device 1, and the side of feed device 1 is equipped with printing equipment 3.
Referring to Fig. 2 and Fig. 3, feed device 1 includes rotary shafts 11, and the feed end of rotary shafts 11 is equipped with elevating mechanism
13, elevating mechanism 13 includes elevating lever 131, and 131 both ends of elevating lever are fixedly linked with rotary shafts 11, slide on elevating lever 131
It is equipped with and puts a frame 132, put to be rotatably equipped on a frame 132 and more than one put a roller 137.Put a frame 132 and elevating lever 131
Connected one end offers lift span 138, and elevating lever 131 is connected with the sliding of lift span 138.It is installed on the roof of rotary shafts 11
There is the first driving motor 133, first gear 134, the bottom wall of rotary shafts 11 are connected on the output shaft of the first driving motor 133
On second gear 135 is installed, the first transmission chain 136, the first transmission chain are installed in first gear 134 and second gear 135
136 are connected with a frame 132 is put.
Referring to Fig. 2 and Fig. 3, the both ends of elevating mechanism 13 are provided with limit assembly 17, and limit assembly 17 includes position-limited rack
171, position-limited rack 171 is provided with locating rack 177 far from the side of elevating mechanism 13, and connecting hole 178 is offered on locating rack 177,
Locating rack 177 is provided with handler 173 far from the side of elevating mechanism 13, and the second screw rod 174 is connected on handler 173, limit
Threaded hole 172 is offered on the frame 171 of position, the second screw rod 174 is threadedly coupled with threaded hole 172, and the second screw rod 174 passes through threaded hole
172 one end is connected with limit plate 175.Third location hole 176 is offered on position-limited rack 171, and is connected on locating rack 177
Two locating rods 179, the second locating rod 179 pass through third location hole 176 and are connected with limit plate 175.
Referring to Fig. 2 and Fig. 3, the feed end of rotary shafts 11 is equipped with locating rack 111, is equipped with and chooses on locating rack 111
Mechanism 12, pulling mechanism 12 include adjusting component 121, and adjusting component 121 includes adjustable plate 122, and adjustable plate 122 is slidably mounted on
On locating rack 111, locating rack 111 is equipped with the first cylinder 123, the piston of the first cylinder 123 close to the side of rotary shafts 11
Bar is connected with adjustable plate 122；The length of adjustable plate 122 is greater than the width of locating rack 111, and the both ends of adjustable plate 122 offer cunning
Hole 124 is moved, second cylinder 125 is installed on adjustable plate 122, mounting blocks 126 are connected on the piston rod of the second cylinder 125, is pacified
The both ends of dress block 126 are connected with adjusting rod 127, and adjusting rod 127 is connected with the sliding eye 124 sliding, and adjusting rod 127 passes through
One end of sliding eye 124 is connected with drawing assembly 15.
Referring to Fig. 2 and Fig. 3, drawing assembly 15 includes air pump 151, and air pump 151 is mounted in rotary shafts 11, adjusting rod
127 one end far from mounting blocks 126 are connected with sucker 152, and the gas outlet of air pump 151 is connected with tracheae 153, and tracheae 153 is separate
The one end being connected with air pump 151 is connected with sucker 152.
Referring to Fig. 2 and Fig. 3, swing mechanism 16 is installed on locating rack 111, swing mechanism 16 includes link block 161, even
It connects 161 one end of block to be connected with locating rack 111, swing arm 162, swing arm 162 and company is installed on the other end of link block 161
It is hinged to connect block 161, one end of swing arm 162 is connected with the piston rod for the oscillating cylinder 163 being mounted on locating rack 111, swings
The other end of arm 162 is rotatably connected to by pinch roller 164.
Referring to Fig. 2 and Fig. 3, pressing mechanism 14 is provided in rotary shafts 11.Pressing mechanism 14 includes fixed block 141, Gu
Determine block 141 to be mounted on locating rack 111, telescopic chute 142 is offered on fixed block 141, is slidably fitted in telescopic chute 142 flexible
Block 143 is equipped on locating rack 111 by air cylinder 144, offers telescopic hole 145 on fixed block 141, telescopic hole 145 with stretch
Contracting slot 142 is connected to, and is passed through telescopic hole 145 by the piston rod of air cylinder 144 and is connected with telescopic block 143, telescopic block 143 it is separate
Pressing roller 146 is connected with by one end that air cylinder 144 is connected.
Referring to Fig. 4 and Fig. 5, a kind of printing equipment of circuit board press disclosed by the invention, including workbench 21, work
Platform 21 is internally provided with actuator 216, and actuator 216 includes driving cylinder 225, and driving cylinder 225 is mounted on workbench 21
Side wall on, drive cylinder 225 piston rod on be connected with the first drive block 226, one end of the first drive block 226 is equipped with drive
Motor 227 is moved, the 5th gear 228 is connected on the output shaft of driving motor 227, also pacifies on the other end of the first drive block 226
Equipped with the 6th gear 229.
Referring to Fig. 4 and Fig. 5, first positioning hole 212, workbench 21 are offered along 21 length direction of workbench on workbench 21
On along the width direction of workbench 21 offer second location hole 213.Setting in first positioning hole 212 and second location hole 213
There is a positioning mechanism 211, positioning mechanism 211 includes the first locating rod 214, and 214 one end of the first locating rod is provided with double wedge 23, and first
Locating rod 214 is meshed by double wedge 23 with first gear 228 with second gear 229, the other end setting of the first locating rod 214
There is locating piece 217.
Referring to figure 5 and figure 6, the second telescopic chute 22 is offered on locating piece 217, and spring is installed in the second telescopic chute 22
221, one end of spring 221 is connected with the slot bottom of the second telescopic chute 22, and the other end of spring 221 is connected with locking piece 222, and first
One end that locating rod 214 is connected with locating piece 217 offers more than one positioning along the length direction of the first locating rod 214
Slot 223, locating piece 217 and locating slot 223 are clamped, and offer locking hole 224 on 214 side wall of the first locating rod, locking hole 224 with
Locating slot 223 is connected to, and locking piece 222 is clamped with locking hole 224.Locating piece 217 and first positioning hole 212 and second location hole
213 slidings are connected.
Referring to Fig. 7, the side of workbench 21 is equipped with hydraulic cylinder 231, is equipped with sliding rack on the piston rod of hydraulic cylinder 231
232, sliding motor 233 is installed, the length direction in sliding rack 232 along sliding rack 232 offers sliding in sliding rack 232
Slot, one end of slippage slot are equipped with third gear 234, and the output shaft of sliding motor 233 passes through 232 third gear 234 of sliding rack
It is connected, the other end of slippage slot is equipped with the 4th gear 235, is equipped with transmission chain on third gear 234 and the 4th gear 235
236；
Referring to Fig. 7, sliding arm 237 is slidably fitted in slippage slot, sliding arm 237 is connected with transmission chain 236, slides arm
237 separate one end being connected with sliding rack 232 are equipped with driving mechanism 24, and driving mechanism 24 includes the first cylinder 245 and second
Cylinder 246, the first cylinder 245 and the second cylinder 246 are mounted on sliding arm 237, the first cylinder 245 and the second cylinder 246
Piston rod on be connected with the second drive block 247, the both ends of the second drive block 247 are connected with drive rod 248, slide on arm 237
The drive hole 249 that cooperation drive rod 248 uses is offered, drive rod 248 is slidably connected with drive hole 249, and drive rod 248 passes through
One end of drive hole 249 is connected with the first scraper 241 and the second scraper 242.
Referring to Fig. 7, screen frame 243, halftone are connected in the sliding rack 232 of 242 lower section of the first scraper 241 and the second scraper
Halftone 244 is installed in frame 243.First scraper 241 and the second scraper 242 and halftone 244 are inconsistent.
Implementation principle are as follows: in feeding, copper-clad plate is placed in and is put on a frame 132, then the first driving motor 133 drives
First gear 134 rotates, and first gear 134 drives the transmission of the first transmission chain 136, and the first transmission chain 136 drives second gear 135
Rotation, the first transmission chain 136, which drives, puts the height that a frame 132 rises to the suitable crawl of pulling mechanism 12 copper-clad plate.
Then starting the first cylinder 123, the piston rod of the first cylinder 123 drives adjustable plate 122 to slide along locating rack 111,
It is moved to adjustable plate 122 above copper-clad plate, then starts the second cylinder 125, the piston rod of the second cylinder 125 drives mounting blocks
126 declines, mounting blocks 126 drive adjusting rod 127 to decline along sliding eye 124, sucker 152 and copper-clad plate table on adjusting rod 127
Face is inconsistent, and then the air in sucker 152 is sucked out booster air pump 151, so that sucker 152 is connect tightly with copper-clad plate
It is close, then restart the second cylinder 125, the piston rod of the second cylinder 125 drives mounting blocks 126 to rise, and mounting blocks 126 drive
Adjusting rod 127 rises, and adjusting rod 127 pulls copper-clad plate to rise.
Then start oscillating cylinder 163, the piston rod of oscillating cylinder 163 pulls one end of swing arm 162 to swing, swings
The other end of arm 162 also swings and beats the copper-clad plate for being drawn the crawl of component 15, so that the copper-clad plate being attached is fallen, thus
Guarantee one piece of copper-clad plate of drawing assembly 15 crawls.Then start the first cylinder 123, the piston rod of the first cylinder 123 drives again
Adjustable plate 122 is slided along locating rack 111, so that copper-clad plate is sent into rotary shafts 11.Then air cylinder 144 is pressed in starting, is pressed
The piston rod of air cylinder 144 pushes telescopic block 143 to skid off out of telescopic chute 142, and telescopic block 143, which drives, presses nip roll for drawing assembly
The copper-clad plate grabbed on 15 is pressed into rotary shafts 11.Then copper-clad plate enters print steps along the transmission of rotary shafts 11.
After copper-clad plate enters workbench 21, driving cylinder 225 drives the first drive block 226 to rise, on the first drive block 226
Make the first locating rod 214 when rising, rise, the first locating rod 214 and upper locating piece 217 stretch out first positioning hole 212 and the
Then two location holes 213 restart driving motor 227, driving motor 227 drives first gear 228 to rotate, first gear 228
Rotation drives the first locating rod 214 mobile, and the first locating rod 214 drives locating piece 217 fixed in first positioning hole 212 and second
Sliding in the hole 213 of position, for locating piece 217 in sliding, the copper-clad plate being placed on workbench 21 is pushed to by locating piece 217 can be with
The position being overlapped with halftone 244.
Then start to print, when printing, hydraulic cylinder 231 drives sliding rack 232 to decline, sliding rack 232 drive halftone 244 with
Then the contact of copper-clad plate surface starts the first cylinder 245, the piston rod of the first cylinder 245 drives the decline of the second drive block 247,
Second drive block 247 drives drive rod 248 to slide decline along drive hole 249, and drive rod 248 drives the decline of the first scraper 241, makes
It obtains the first scraper 241 to contradict with halftone 244, then starting sliding motor 233, the output shaft for sliding motor 233 drives third tooth
234 rotation of wheel, third gear 234 drive transmission chain 236 to be driven, and transmission chain 236 drives the rotation of the 4th gear 235, transmission chain 236
Sliding arm 237 is driven to slide simultaneously, sliding arm 237 drives the sliding of the first scraper 241, and the printed liquid on halftone 244 is passed through net
Version 244 is coated in copper-clad plate.After the first scraper 241 scrapes, hydraulic cylinder 231 drives sliding rack by piston rod again
232 rise so that halftone 244 is separated with copper-clad plate；Then first playing the first cylinder 245 drives the first scraper 241 far from halftone
244, restart the second cylinder 246, the piston rod of the second cylinder 246 drives the second drive block 247 to rise, the second drive block 247
It drives drive rod 248 to slide along drive hole 249 to rise, drive rod 248 drives the second scraper 242 to rise, so that the second scraper
242 contradict with halftone 244, and then starting sliding motor 233 will slide arm 237 and move back to initial position, and the second scraper 242 will print
Brush liquid scrapes back the other end.Complete printing.
Embodiment 2-5 is the difference from embodiment 1 is that each component is calculated by weight as following table in etching solution.
| Copper chloride | Concentrated hydrochloric acid | Hydrogen peroxide | Additive | Water | |
| Embodiment 2 | 22.5 | 50 | 115 | 22.5 | 290 |
| Embodiment 3 | 25 | 60 | 120 | 25 | 300 |
| Embodiment 4 | 27.5 | 70 | 125 | 27.5 | 310 |
| Embodiment 5 | 30 | 80 | 130 | 30 | 320 |
Embodiment 6-9 is the difference from embodiment 1 is that each component is calculated by weight as following table in prerinse liquid.
Embodiment 10-13 is the difference from embodiment 1 is that each component is following table by weight percentage in additive.
Comparative example
Comparative example 1 the difference from embodiment 1 is that: additive is not added in etching solution；
Comparative example 2 the difference from embodiment 1 is that: in etching process, do not add hydrochloric acid；
Comparative example 3 the difference from embodiment 1 is that: hydrogen peroxide is not added in etching solution；
Detection method
Etch-rate test
Etching solution in embodiment 1-5 and comparative example 1-2 is configured, then controlling reaction temperature is 50 DEG C, then by sample panel
It is put into etching solution, comparative example 2 does not add hydrochloric acid in etching process.The copper foil in addition to route in measurement sample panel is corroded
The pattern of copper foil after complete time, and corrosion in sample panel surface lines.
| Embodiment | Etching time (s) |
| Embodiment 1 | 620 |
| Embodiment 2 | 625 |
| Embodiment 3 | 623 |
| Embodiment 4 | 618 |
| Embodiment 5 | 617 |
| Comparative example 1 | 622 |
| Comparative example 2 | 959 |
| Comparative example 3 | 980 |
Phenomenon: the copper wire Road Edge in comparative example 1 is corroded, and the edge of embodiment 1-5 copper wire is not almost corroded；
Conclusion: by that can obtain to embodiment 1-5 and comparative example 2 and the comparison of comparative example 3, the etching time of embodiment 1-5 is bright
It is aobvious to be lower than comparative example 2-3, it was demonstrated that the oxidation that the hydrogen peroxide added in etching solution plays cuprous ion, to etch-rate
Have being significantly improved effect, adds hydrochloric acid and improve hydrochloric acid to the complexing of cuprous ion also to the rate of etching with significantly mentioning
Height effect.And compared by the pattern of copper wire in comparative example 1 and embodiment 1-5, it can be seen that the copper wire roadside in comparative example 1
Edge is obviously corroded, it was demonstrated that additive for protect copper wire Road Edge be not corroded play the role of it is apparent.
The above is only a preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art
Those of ordinary skill for, several improvements and modifications without departing from the principles of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (9)
1. a kind of circuit board printing process, which is characterized in that the circuit board printing process comprises the following steps that:
S1: copper-clad plate is cut into required size；
S2: the copper-clad plate cut is pre-processed；
S3: pretreated copper-clad plate is subjected to route printing by printing machine；
S4: the copper-clad plate being completed for printing is dried with drying box；
S5: the copper-clad plate after drying being put into etching solution and is performed etching, and the etching solution includes the component of following parts by weight:
S6: the copper-clad plate after etching is removed printing film process；
S7: the copper-clad plate after removal print film is subjected to symbol printing；
S8: the copper-clad plate for printing symbol is subjected to boring positioning；
By above-mentioned eight steps, finished circuit board is obtained.
2. a kind of circuit board printing process according to claim 1, it is characterised in that: add in pretreatment in the S2 step
Added with pretreatment fluid, the pretreatment fluid includes the component of following parts by weight:
3. a kind of circuit board printing process according to claim 1, it is characterised in that: in the additive in the step S5
Component including following parts by weight:
Poly- P-ethoxyphellylurea 60-80%；
Polyoxyethylene ether 10-15%；
Potassium chloride 5-30%.
4. a kind of circuit board printing process according to claim 1, it is characterised in that: control etching solution in the S5 step
Spray pressure between 0.2MPa-0.3MPa, etching solution temperature control at 50-55 DEG C.
5. a kind of circuit board printing process according to claim 1, it is characterised in that: in the S5 step etching process when
When the concentration of hydrochloric acid is lower than the 1/2 of initial additive amount, hydrochloric acid is added to 1.3-1.5 times of initial concentration.
6. a kind of circuit board printing process according to claim 1, it is characterised in that: the printing machine includes feed device
(1), the side of feed device (1) is equipped with printing equipment (3)；
The feed device (1) includes rotary shafts (11), and the side of the rotary shafts (11) is equipped with elevating mechanism (13),
Pulling mechanism (12) are installed in the rotary shafts at the top of elevating mechanism (13), the feeding close to pulling mechanism (12)
Pressing mechanism (14) are provided in rack；
The elevating mechanism (13) includes elevating lever (131), elevating lever (131) both ends and rotary shafts (11) stationary phase
Even, it is slidably fitted with and puts a frame (132) on the elevating lever (131), be equipped with first on the roof of the rotary shafts (11)
Driving motor (133) is connected with first gear (134), the rotary shafts on the output shaft of first driving motor (133)
(11) it is equipped on bottom wall second gear (135), is equipped with first in the first gear (134) and second gear (135)
Transmission chain (136), first transmission chain (136) are connected with a frame (132) of putting；
The rotary shafts (11) are equipped with locating rack (111) close to the side of elevating mechanism (13), the pulling mechanism (12)
Including adjusting component (121), the adjusting component (121) includes adjustable plate (122), and the adjustable plate (122) is slidably mounted on
On locating rack (111), the locating rack (111) is equipped with the first cylinder (123) close to the side of rotary shafts (11), and described the
The piston rod of one cylinder (123) is connected with the adjustable plate (122)；The length of the adjustable plate (122) is greater than locating rack (111)
Width, the both ends of the adjustable plate (122) offer sliding eye (124), are equipped with the second cylinder on the adjustable plate (122)
(125), it is connected with the second mounting blocks (126) on the piston rod of second cylinder (125), second mounting blocks (126)
Both ends are connected with adjusting rod (127), and the adjusting rod (127) is connected with the sliding eye (124) sliding, the adjusting rod
(127) one end across sliding eye (124) is connected with drawing assembly (15), and drawing assembly (15) includes sucker (152), sucker
(152) it is connected with adjusting rod (127), is equipped in rotary shafts (11) air pump (151), the gas outlet of air pump (151) and tracheae
(153) it is connected, the separate one end being connected with air pump (151) of tracheae (153) is connected with sucker (152)；
The pressing mechanism (14) includes fixed block (141), and the fixed block (141) is mounted on locating rack (111), described solid
Determine to offer on block (141) the first telescopic chute (142), be slidably fitted with telescopic block (143) in first telescopic chute (142),
It is equipped on the locating rack (111) by air cylinder (144), is offered telescopic hole (145) on the fixed block (141), it is described
Telescopic hole (145) is connected to the first telescopic chute (142), and the piston rod by air cylinder (144) passes through telescopic hole (145) and stretches
Contracting block (143) is connected, and the telescopic block (143) is connected with pressing roller (146) far from the one end being connected by air cylinder (144).
7. a kind of circuit board printing process according to claim 6, it is characterised in that: installed on the locating rack (111)
Have swing mechanism (16), the swing mechanism (16) includes link block (161), described link block (161) one end and the positioning
Frame (111) be connected, be equipped with swing arm (162) on the other end of the link block (161), the swing arm (162) with it is described
Link block (161) hingedly, one end of the swing arm (162) and the work of oscillating cylinder (163) being mounted on locating rack (111)
Stopper rod is connected, and the other end of the swing arm (162) is rotatably connected to by pinch roller (164)；
The both ends of the elevating mechanism (13) are provided with limit assembly (17), and the limit assembly (17) includes position-limited rack (171),
It is offered threaded hole (172) on the position-limited rack (171), the position-limited rack (171) is arranged far from the side of elevating mechanism (13)
Have handler (173), is connected with the second screw rod (174) on the handler (173), second screw rod (174) and threaded hole
(172) it is threadedly coupled, one end that second screw rod (174) passes through threaded hole (172) is connected with limit plate (175)；The limit
It is offered third location hole (176) on position frame (171), the position-limited rack (171) is provided with far from the side of elevating mechanism (13)
Locating support (177) offers connecting hole (178) on the locating support (177), the screw rod (174) and connecting hole (178)
It is rotatedly connected, is also connected with the second locating rod (179) on the locating support (177), second locating rod (179) passes through the
Three location holes (176) are connected with limit plate (175).
8. a kind of circuit board printing process according to claim 1, it is characterised in that: the printing equipment (3) includes work
Make platform (21), be provided with positioning mechanism (211) on the workbench (21), along workbench (21) length on the workbench (21)
Direction offers first positioning hole (212), and it is fixed that the width direction on the workbench (21) along workbench (21) offers second
Position hole (213), the workbench (21) is interior to be equipped with the first locating rod (214) and the second locating rod (179), the workbench
(21) it is equipped on side wall actuator (216), the actuator (216) and the first locating rod (214) and the second locating rod
(179) one end is connected, and the other end of first locating rod (214) and the second locating rod (179) is connected with locating piece
(217), the locating piece (217) is connected with first positioning hole (212) and second location hole (213) sliding；
The locating piece (217) is removably mounted in the first locating rod (214) and the second locating rod (179)；The locating piece
(217) second is opened up on has telescopic chute (22), is equipped with spring (221) in second telescopic chute (22), the spring (221)
One end be connected with the slot bottom of the second telescopic chute (22), the other end of the spring (221) is connected with locking piece (222), described
One end that first locating rod (214) and the second locating rod (179) are connected with locating piece (217) offers more than one locating slot
(223), the locating piece (217) and locating slot (223) clamping, first locating rod (214) and the second locating rod (179)
It is offered on side wall locking hole (224), the locking hole (224) is connected to locating slot (223), locking piece (222) and card
Determine hole (224) clamping；
Driving cylinder (225) is installed, the piston rod of driving cylinder (225) is connected with the first drive block on workbench (21)
(226), the actuator (216) includes the second driving motor (227), is equipped with the second drive on first drive block (226)
It moves motor (227), is connected with first gear (134) on the output shaft of second driving motor (227), first drive block
(226) it is also equipped on second gear (135), first locating rod (214) and the second locating rod (179) is separate and locating piece
(217) connected one end is provided with double wedge (23), and first locating rod (214) and the second locating rod (179) pass through double wedge
(23) it is meshed with first gear (134) with second gear (135).
9. a kind of circuit board printing process according to claim 8, it is characterised in that: the side liquid of the workbench (21)
Cylinder pressure (231) is equipped with sliding rack (232) on the piston rod of the hydraulic cylinder (231), is equipped on the sliding rack (232)
It slides motor (233), the sliding rack (232) offers slippage slot, and one end of the slippage slot is equipped with third gear
(234), the output shaft of sliding motor (233) is connected across sliding rack (232) third gear (234), the slippage slot
The other end is equipped with the 4th gear (235), is equipped with the second transmission chain on the third gear (234) and the 4th gear (235)
(236), sliding arm (237) is slidably fitted in the slippage slot, the sliding arm (237) is connected with the second transmission chain (236),
The separate one end being connected with sliding rack (232) of sliding arm (237) is equipped with driving mechanism (24), the driving mechanism (24)
On the first scraper (241) and the second scraper (242) are installed；It is connected in sliding rack (232) below the driving mechanism (24)
Have screen frame (243), halftone (244) are installed in the screen frame (243)；First scraper (241) and the second scraper
(242) inconsistent with halftone (244)；
The driving mechanism (24) includes the first cylinder (123) and the second cylinder (125), first cylinder (123) and second
Cylinder (125) is mounted on sliding wall, and the piston rod of first cylinder (123) and the second cylinder (125) is connected with the second drive
The both ends of motion block (247), second drive block (247) are connected with drive rod (248), and cooperation is offered on the sliding wall and is driven
The drive hole (249) that lever (248) uses, the drive rod (248) pass through drive hole (249) and the first scraper (241) and the
Two scrapers (242) are connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910065125.5A CN109862706B (en) | 2019-01-24 | 2019-01-24 | Circuit board printing process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910065125.5A CN109862706B (en) | 2019-01-24 | 2019-01-24 | Circuit board printing process |
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| CN109862706A true CN109862706A (en) | 2019-06-07 |
| CN109862706B CN109862706B (en) | 2020-08-14 |
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| CN201910065125.5A Active CN109862706B (en) | 2019-01-24 | 2019-01-24 | Circuit board printing process |
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| CN110416133A (en) * | 2019-08-28 | 2019-11-05 | 南京信息职业技术学院 | A kind of semiconductor chip manufacture Etaching device and its application method |
| CN112135430A (en) * | 2020-09-25 | 2020-12-25 | 刘翠 | Etching device for printed circuit board |
| CN112512223A (en) * | 2020-12-15 | 2021-03-16 | 深圳市瀚鼎电路电子有限公司 | Circuit forming method of circuit board |
| CN110416133B (en) * | 2019-08-28 | 2024-05-31 | 南京信息职业技术学院 | Etching device for manufacturing semiconductor chip and application method thereof |
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|---|---|
| CN109862706B (en) | 2020-08-14 |
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