CN114599167B - Anti-scratch treatment process for thick copper PCB welding surface - Google Patents
Anti-scratch treatment process for thick copper PCB welding surface Download PDFInfo
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- CN114599167B CN114599167B CN202110965007.7A CN202110965007A CN114599167B CN 114599167 B CN114599167 B CN 114599167B CN 202110965007 A CN202110965007 A CN 202110965007A CN 114599167 B CN114599167 B CN 114599167B
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- protective film
- air outlet
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- scratch
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/22—Secondary treatment of printed circuits
- H05K3/28—Applying non-metallic protective coatings
- H05K3/281—Applying non-metallic protective coatings by means of a preformed insulating foil
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
- H05K2203/13—Moulding and encapsulation; Deposition techniques; Protective layers
- H05K2203/1377—Protective layers
- H05K2203/1383—Temporary protective insulating layer
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/82—Recycling of waste of electrical or electronic equipment [WEEE]
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- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
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Abstract
The invention relates to a PCB production technology, which is used for solving the problems that a transfer roller is easy to damage a PCB and a protective film is not easy to tear off in use in a PCB anti-scratch treatment process, and the PCB anti-scratch treatment process comprises the following steps: the electrostatic adsorption type protective film is applied to the surface of the welding surface of the circuit board in a manner of applying static electricity to the protective film, so that the effect of fixing the protective film is achieved, the electrostatic adsorption type protective film is easy to tear, and a solder mask layer on the surface of the PCB is not damaged when the protective film is torn down due to the fact that the protective film is adhered and tightly adhered; meanwhile, after the protective film is adsorbed on the surface of the PCB, the traditional rolling mode is changed into a fan blowing mode, and air bubbles in the protective film can be driven to the two sides of the PCB by wind power of transverse reciprocating sweeping, so that the air bubbles escape from between the protective film and the PCB, and the problems that the PCB is easily damaged by the rolling roller in the anti-scratch treatment process of the PCB and the protective film is not easy to tear off in use are solved.
Description
Technical Field
The invention relates to a PCB production technology, in particular to an anti-scratch treatment process for a thick copper PCB welding surface.
Background
The PCB board, namely the printed circuit board, is an important electronic component, is used as the supporter of electronic component or the carrier of electronic component electrical connection, and the surface is very easy to be damaged at the in-process of transportation after the PCB board processing is accomplished, especially the solder mask on surface, in case receive the damage such as scratch, the PCB board will take place the short circuit at the welding to unable use, in addition, when the surface antioxidation treatment layer received the destruction, also can influence the antioxidation and the electrically conductive effect of circuit in the PCB greatly, at present, generally carry out the tectorial membrane to PCB board surface through PCB board tectorial membrane machine to the protection circuit board surface is not scratched.
At present, the anti-scratch treatment process for the welding surface of the thick copper PCB still has the defect that when the PCB is treated, the process also adopts the film coating principle to protect the PCB, but when the PCB is coated, the protective film and the PCB are generally stuck together by a rotating roller, and when the rotating roller is pressed against the PCB, the breakage of the PCB or the damage of a circuit is easily caused, the product is scrapped, the loss is caused, and the economic effect is reduced; in addition, because various components can also be welded at the later stage of the PCB, the protective film still needs to be torn off when the PCB is used, so when the adhesive is used for bonding, the solder mask layer on the surface of the PCB is damaged when the protective film is torn off easily, thereby causing short circuit of the circuit board when welding, and reducing the use effect of the circuit board.
Aiming at the technical problems, the application provides a solution.
Disclosure of Invention
The invention aims to provide a PCB anti-scratch treatment process: the electrostatic adsorption type protective film is applied to the surface of the welding surface of the circuit board in a manner of applying static electricity to the protective film, so that the effect of fixing the protective film is achieved, the electrostatic adsorption type protective film is easy to tear, and a solder mask layer on the surface of the PCB is not damaged when the protective film is torn down due to the fact that the protective film is adhered and tightly adhered; meanwhile, after the protective film is adsorbed on the surface of the PCB, the traditional rolling mode is changed into a fan blowing mode, and air bubbles in the protective film can be driven to the two sides of the PCB by wind power of transverse reciprocating sweeping, so that the air bubbles escape from between the protective film and the PCB, and the problems that the PCB is easily damaged by the rolling roller in the anti-scratch treatment process of the PCB and the protective film is not easy to tear off in use are solved.
The aim of the invention can be achieved by the following technical scheme:
a kind of thick copper PCB board welds the surface and defends the pattern processing technique of scratch resistance, including PCB board and attaching to PCB board and welding the surface the protective film;
the anti-scratch treatment process for the thick copper PCB welding surface comprises the following steps:
step one: penetrating the rolled protective film outside a rotating roller of the PCB anti-scratch processing equipment, tensioning the protective film through a plurality of rotating rollers, penetrating the protective film out of the other end of the PCB anti-scratch processing equipment, and starting the PCB anti-scratch processing equipment to enable a conveyor belt to rotate, wherein the conveyor belt drives the produced PCB to enter the equipment;
step two: the protective film is conveyed forwards under the rotating action of the rotating rollers, at the moment, the static applying mechanism is started, the static bars connected with the positive electrode wires enable the protective film sliding through the static bars to have static electricity, after the conveying belt drives the PCB to enter the PCB anti-scratch equipment, the PCB flows along with the conveying belt to pass through the lower part of the static bars, and the static electricity carried on the protective film enables the protective film to be adsorbed on the surface of the PCB along with the approaching of the conveying belt and the protective film, but at the moment, the lamination gaps between the protective film and the PCB are more;
step three: the PCB board which is primarily attached to the protective film is conveyed to the lower part of the air outlet under the drive of the conveyor belt, high-pressure air is led into the air outlet in an air pipe connected to the rear of the air outlet, then the air outlet starts to blow downwards, and the protective film is attached to the PCB board more tightly by virtue of the blown air;
step four: when the air outlet starts to discharge air, the motor is started, the motor drives the rotary table at the output end to rotate, the sliding block at the outer side of the rotary table drives the top end of the connecting rod which is connected to the outer side in a clamping mode to swing, the connecting rod swings around the rotating head, the lower portion of the connecting rod is longer, larger swing amplitude can be obtained, the connecting rod drives the air outlet to swing in a reciprocating mode, and the air outlet sweeps out blown air from the upper portion of the protective film;
step five: the PCB board which is tightly attached to the protective film is conveyed to the end from the conveyor belt and is conveyed to the connection table, then the conveyor belt at the middle section of the connection table drives the PCB board to move to the lower part of the cutter head, at the moment, the hydraulic column is started, the hydraulic column drives the cutter head to start to descend, the cutter head is clamped and inserted into the cutting groove, and the protective film above the PCB board is cut off;
step six: the hydraulic column drives the cutter head to rise, the PCB after the redundant protective film is cut off is sent out by the conveyer belt to enter the next production, and the part of the protective film which is not cut off is driven by a rotating roller outside the PCB anti-scratch processing equipment to be wound.
As a preferred implementation mode of the invention, the PCB board anti-scratch processing equipment comprises a shell, a conveyor belt, a connection table, a rotary roller, an electrostatic applying mechanism, an air outlet, an air pipe, a hydraulic column and a cutter head, wherein the rotary roller is rotationally connected inside the shell, a protective film is rotationally connected outside the rotary roller, the conveyor belt is arranged below the shell, the middle section of the conveyor belt is disconnected, conductive blocks are connected inside the disconnected part, the conductive blocks are arranged at intervals, the electrostatic applying mechanism is fixedly arranged inside the shell, one end of the electrostatic applying mechanism is connected with the protective film, the other end of the electrostatic applying mechanism is in contact with the conveyor belt, the connection table is fixedly connected with one end of the conveyor belt, the air pipe is fixedly arranged on the lower surface of the top of the shell, the air outlet is movably connected to the bottom end of the air pipe, the rotary mechanism is fixedly connected with the air outlet, the hydraulic column is arranged on the lower surface of the top of the shell, the hydraulic column and the cutter head is fixedly arranged on the lower surface of the hydraulic column.
As a preferred embodiment of the invention, the static electricity applying mechanism comprises a power supply box, a positive electrode wire, a grounding wire, a static rod, a support, a pressure spring and a contact block, wherein the power supply box is fixedly arranged on the inner wall of a shell, the positive electrode wire is led out from the interior of the power supply box, one end of the positive electrode wire is connected with the static rod, the static rod is connected with a protective film, the support is fixedly arranged in the shell, the grounding wire is led out from the other side of the power supply box, the grounding wire is fixedly arranged on the surface of the support, one end of the grounding wire is fixedly connected with the contact block, and the contact block is fixedly connected with the upper surface of the support through the pressure spring on the bottom surface.
As a preferred implementation mode of the invention, the rotating mechanism comprises a supporting plate, a connecting rod, a motor, a turntable, a rotating head and a sliding block, wherein the supporting plate is fixedly arranged on the outer wall of the air pipe, the motor is fixedly arranged on the upper surface of the supporting plate, the turntable is fixedly arranged at the output end of the motor, the sliding block is fixedly arranged on one side of the turntable, a sliding groove is formed in the top end of the connecting rod, the sliding block is clamped and connected in the sliding groove, the rotating head is fixedly arranged at one end of the supporting plate, the connecting rod is inserted in the rotating head, and the bottom end of the connecting rod is fixedly arranged on one side of the air outlet.
As a preferable implementation mode of the invention, the middle part of the connection table is disconnected, a conveying belt is embedded in the disconnected part of the connection table, one end of the conveying belt, which is close to the conveying belt, is inwards sunken into an arc shape which is fit with the conveying belt, the upper surface of the connection table is provided with a cutting groove, and the shape of the cutting groove is the same as that of the lower surface of the cutter head.
As a preferred implementation mode of the invention, the inside of the connection table is rotationally connected with a driving wheel and a supporting column, the supporting column is arranged at one end of the connection table, which is close to the conveyor belt, wherein a group of supporting column outer walls are connected with springs, and the springs are embedded in the connection table outer walls.
As a preferred implementation mode of the invention, the air pipe is movably connected with the air outlet through a corrugated pipe, the top end of the corrugated pipe is fixedly connected with the air pipe, and the bottom end of the corrugated pipe is fixedly connected with the air outlet.
As a preferable implementation mode of the invention, clamping blocks are fixedly arranged at two ends of the electrostatic rod, the clamping blocks are in barb shapes, the upward inclined parts of the clamping blocks face the middle part of the electrostatic rod, two groups of clamping blocks are symmetrically arranged at two ends of the electrostatic rod, and the tail ends of the clamping blocks are smooth round corners.
Compared with the prior art, the invention has the beneficial effects that:
1. the anti-scratch treatment process for the thick copper PCB welding surface comprises the following steps: penetrating the rolled protective film outside a rotating roller of the PCB anti-scratch processing equipment, tensioning the protective film through a plurality of rotating rollers, penetrating the protective film out of the other end of the PCB anti-scratch processing equipment, and starting the PCB anti-scratch processing equipment to enable a conveyor belt to rotate, wherein the conveyor belt drives the produced PCB to enter the equipment; the protective film is conveyed forwards under the rotation action of a plurality of rotating rollers, at the moment, the static applying mechanism is started, the static bars connected with the positive electrode wires enable the protective film sliding through the static bars to have static electricity, after the conveying belt drives the PCB to enter the PCB anti-scratch equipment, the PCB flows along with the conveying belt to pass through the lower part of the static bars, and along with the approaching of the conveying belt and the protective film, the static electricity carried on the protective film enables the protective film to be adsorbed on the surface of the PCB; the electrostatic protection film is applied to the surface of the welding surface of the circuit board, so that the protection film is automatically adsorbed on the surface of the welding surface of the circuit board, the protection film adsorbed by the electrostatic protection film is easy to tear, and the solder mask layer on the surface of the PCB board is not damaged when the protection film is torn down due to the fact that the protection film is adhered and too tightly.
2. The PCB board which is primarily attached to the protective film is conveyed to the lower part of the air outlet under the drive of the conveyor belt, high-pressure air is led into the air outlet in an air pipe connected to the rear of the air outlet, then the air outlet starts to blow downwards, and the protective film is attached to the PCB board more tightly by virtue of the blown air; when the air outlet starts to discharge air, the motor is started, the motor drives the rotary table at the output end to rotate, the sliding block at the outer side of the rotary table drives the top end of the connecting rod which is connected to the outer side in a clamping mode to swing, the connecting rod swings around the rotating head, the lower portion of the connecting rod is longer, larger swing amplitude can be obtained, the connecting rod drives the air outlet to swing in a reciprocating mode, and the air outlet sweeps out blown air from the upper portion of the protective film; according to the invention, after the protective film is adsorbed on the surface of the PCB, the traditional rolling mode of the rotating roller is changed into the blowing mode of the fan, and the air bubbles in the protective film can be driven to the two sides of the PCB by the wind power of transverse reciprocating sweeping, so that the air bubbles can escape from between the protective film and the PCB, and the problem that the rotating roller is easy to damage the PCB in the anti-scratch treatment process of the PCB is solved.
Drawings
The present invention is further described below with reference to the accompanying drawings for the convenience of understanding by those skilled in the art.
FIG. 1 is a schematic diagram of the front view of the structure of the present invention;
FIG. 2 is a schematic view of the internal structure of the present invention;
FIG. 3 is a schematic view of an electrostatic wand according to the present invention;
FIG. 4 is a schematic view of a contact block according to the present invention;
FIG. 5 is a schematic view of the electrostatic applying mechanism of the present invention;
FIG. 6 is an enlarged schematic view of FIG. 5A according to the present invention;
FIG. 7 is a schematic view of a rotating mechanism according to the present invention;
FIG. 8 is a schematic view of a connecting rod according to the present invention;
FIG. 9 is a schematic diagram of a turntable according to the present invention;
FIG. 10 is a schematic view of a conveyor belt structure of the present invention;
fig. 11 is an enlarged view of fig. 10B according to the present invention.
In the figure: 1. a housing; 2. a conveyor belt; 3. a docking station; 4. a rotating roller; 5. an electrostatic applying mechanism; 501. a power box; 502. a positive line; 503. a ground wire; 504. an electrostatic wand; 505. a bracket; 506. a pressure spring; 507. a contact block; 6. an air outlet; 7. a rotating mechanism; 701. a support plate; 702. a connecting rod; 703. a motor; 704. a turntable; 705. a rotating head; 706. a chute; 707. a slide block; 8. an air duct; 9. a bellows; 10. a hydraulic column; 11. a cutter head; 12. cutting the groove; 13. a conveyor belt; 14. a driving wheel; 15. a support column; 16. a spring; 17. a conductive block; 18. and (5) clamping blocks.
Detailed Description
The technical solutions of the present invention will be clearly and completely described in connection with the embodiments, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Embodiment one:
referring to fig. 1-2, a thick copper PCB board welding surface anti-scratch treatment process includes a PCB board and a protective film attached to the PCB board welding surface;
the anti-scratch treatment process for the thick copper PCB welding surface comprises the following steps:
step one: penetrating the rolled protective film outside a rotating roller 4 of the PCB anti-scratch and anti-scratch processing equipment, wherein holes are reserved in the middle of the rolled protective film so as to facilitate the passing of the rotating roller 4, the protective film is positioned on the rotating roller 4 at the highest position, the protective film is stretched through the plurality of rotating rollers 4 and then passes out of the other end of the PCB anti-scratch and anti-scratch equipment, then the PCB anti-scratch equipment is started, the conveyor belt 2 rotates, the conveyor belt 2 drives the produced PCB to enter the equipment, and the welding surface of the PCB is upwards;
step two: the protection film is conveyed forward under the rotation action of the plurality of rotating rollers 4, at the moment, the static applying mechanism 5 is started, the static bars 504 connected with the positive electrode wires 502 enable the protection film sliding through the static bars 504 to have static, the adsorptivity of the protection film is increased in a mode that the protection film has static, after the conveying belt 2 drives the PCB to enter the PCB anti-scratch equipment, the PCB flows along with the conveying belt 2 and passes through the lower part of the static bars 504, at the moment, the protection film above the PCB has static, and along with the approaching of the conveying belt 2 and the protection film, the static on the protection film enables the protection film to be adsorbed on the surface of the PCB, at the moment, the lamination gap between the protection film and the PCB is more, or gap wrinkles exist between the protection film and the PCB;
step three: the PCB board which is primarily attached to the protection film is conveyed to the lower portion of the air outlet 6 under the drive of the conveyor belt 2, the air outlet 6 is in a strip shape, the longer edge of the air outlet 6 is along the direction of the conveyor belt 2, high-pressure air is led into the air outlet 6 in an air pipe 8 connected to the rear of the air outlet 6, then the air outlet 6 begins to blow downwards, the length of the air outlet is larger, the coverage area is wider due to the strip-shaped air outlet 6, and the protection film is attached to the PCB board more tightly by virtue of blown air;
step four: when the air outlet 6 starts to discharge air, the motor 703 is started, the motor 703 drives the turntable 704 at the output end to rotate, the turntable 704 drives the sliding block 707 at one side of the turntable to rotate, the sliding block 707 drives the sliding groove 706 in clamping connection to rotate when rotating, but because the sliding groove 706 is arranged above the connecting rod 702, the sliding groove 706 can only swing around the rotating head 705, therefore, when the sliding block 707 performs circular motion, the sliding block 707 can slide up and down in the sliding groove 706, the sliding groove 706 can swing along with the swinging, when the connecting rod 702 swings around the rotating head 705, the swinging arm below the connecting rod 702 is longer, larger swinging amplitude can be obtained, the air outlet 6 is conveniently driven to swing, the connecting rod 702 drives the air outlet 6 to swing back and forth, and the air outlet 6 sweeps out from the upper part of the protective film, so that the air blown out from the air outlet 6 is in an inclined direction, and air bubbles are more beneficial to be extruded from one side;
step five: the PCB board which is tightly attached to the protective film is conveyed to the end from the conveyor belt 2 and is conveyed to the connection table 3, then the conveyor belt 13 at the middle section of the connection table 3 drives the PCB board to move to the lower part of the cutter head 11, the hydraulic column 10 is started at the moment, the hydraulic column 10 drives the cutter head 11 to start descending, the cutter head 11 is clamped and inserted into the excision groove 12, the protective film above the PCB board is cut off, the cut part can move along with the PCB board, the part which is not cut off can be kept connected with the rotary roller 4, and the movement of the protective film is continuously driven;
step six: the hydraulic column 10 drives the cutter head 11 to ascend, the PCB after the redundant protective film is cut off is sent out by the conveying belt 13 to enter the next production, the part of the protective film which is not cut off is driven by the rotary roller 4 outside the PCB anti-scratch processing equipment to be wound, and the PCB is concentrated after being used.
Embodiment two:
referring to fig. 1-11, the anti-scratch processing device for PCB board comprises a housing 1, a conveyor belt 2, a connection table 3, a roller 4, an electrostatic applying mechanism 5, an air outlet 6, an air pipe 8, a hydraulic column 10 and a cutter head 11, wherein the roller 4 is rotatably connected inside the housing 1, so that the roller 4 can rotate inside the housing 1 to drive a protection film sleeved or lapped on the roller to move, the protection film is rotatably connected outside the roller 4, the conveyor belt 2 is arranged below the housing 1, the middle section of the conveyor belt 2 is disconnected, a conductive block 17 is connected inside the disconnected part, the conductive block 17 can connect a grounding wire 503 with the PCB board, the conductive blocks 17 are arranged at intervals, only the conductive block 17 above the contact block 507 can be connected with the grounding wire 503, the electrostatic applying mechanism 5 is fixedly arranged inside the housing 1, one end of the electrostatic applying mechanism 5 is connected with the protection film to apply static electricity to the protection film, the other end of the static applying mechanism 5 is contacted with the conveyor belt 2, the connection platform 3 is fixedly connected with one end of the conveyor belt 2, the air pipe 8 is fixedly arranged on the lower surface of the top of the shell 1, the air pipe 8 is of a hollow structure, the air circulation can be kept in the air pipe 8, the bottom end of the air pipe 8 is movably connected with the air outlet 6, the air outlet 6 is of a strip shape, the longer edge of the air outlet is along the direction of the conveyor belt 2, the air pipe 8 connected behind the air outlet 6 is introduced into the air outlet 6 through high-pressure air, then the air outlet 6 begins to blow downwards, the strip-shaped air outlet 6 can enable the length of the air outlet to be larger, the coverage range is wider, the protective film is attached to the PCB plate more tightly by virtue of the blown air, the rotating mechanism 7 is arranged on the outer wall of the air pipe 8, the rotating mechanism 7 is fixedly connected with the air outlet 6, the rotating mechanism 7 can control the swing of the air outlet 6, the air outlet direction is controlled, the hydraulic column 10 is arranged on the lower surface of the top of the shell 1, the hydraulic column 10 and the air pipe 8 are on the same straight line, and the cutter head 11 is fixedly arranged on the lower surface of the hydraulic column 10 for cutting off the protective film for the next procedure of the air outlet 6;
the electrostatic applying mechanism 5 comprises a power supply box 501, a positive electrode wire 502, a grounding wire 503, an electrostatic rod 504, a support 505, a pressure spring 506 and a contact block 507, wherein the power supply box 501 is fixedly arranged on the inner wall of the shell 1, the positive electrode wire 502 is led out from the inside of the power supply box 501, one end of the positive electrode wire 502 is connected with the electrostatic rod 504, the electrostatic rod 504 is connected with a protective film, static electricity is applied to the protective film so as to increase the adsorption force of the protective film, the support 505 is fixedly arranged in the shell 1, the grounding wire 503 is led out from the other side of the power supply box 501, the grounding wire 503 is fixedly arranged on the surface of the support 505, one end of the grounding wire 503 is fixedly connected with the contact block 507, the contact block 507 is fixedly connected with the upper surface of the support 505 through the pressure spring 506 on the bottom surface, the contact block 507 can be pressed down when the conductive block 17 passes through, the contact block 507 is connected with the contact block 507, the rotating mechanism 7 comprises a supporting plate 701, a connecting rod 702, a motor 703, a turntable 704, a rotating head 705 and a sliding block 707, wherein the supporting plate 701 is fixedly arranged on the outer wall of an air pipe 8 and is used for supporting the rotating mechanism 7, the motor 703 is fixedly arranged on the upper surface of the supporting plate 701, the turntable 704 is fixedly arranged at the output end of the motor 703 and can rotate under the control of the motor 703, the sliding block 707 is fixedly arranged at one side of the turntable 704, the sliding block 707 at one side of the turntable 704 is driven to rotate when the turntable 704 rotates, a sliding groove 706 is arranged at the top end of the connecting rod 702, the sliding block 707 is connected inside the sliding groove 706 in a clamping way, the rotating head 705 is fixedly arranged at one end of the supporting plate 701, the connecting rod 702 is inserted inside the rotating head 705, the sliding groove 706 can only swing around the rotating head 705 when the sliding block 707 performs circular motion, the sliding block 707 can slide up and down in the sliding groove 706, the chute 706 swings along with the swinging, when the connecting rod 702 swings around the rotating head 705, the swing arm below the connecting rod 702 is longer, larger swing amplitude can be obtained, the air outlet 6 is convenient to drive to swing, the connecting rod 702 drives the air outlet 6 to swing reciprocally, the air outlet 6 sweeps out the blown-out air from the upper part of the protective film, the air blown-out by the air outlet 6 is in an inclined direction, air bubbles are more beneficial to being extruded from one side, the bottom end of the connecting rod 702 is fixedly arranged on one side of the air outlet 6, the middle part of the connecting table 3 is disconnected, the conveying belt 13 is embedded in the disconnected part of the connecting table 3, one end of the conveying belt 13 close to the conveying belt 2 is sunken into an arc shape which is attached to the conveying belt 2, the connecting table 3 can be closer to the conveying belt 2, the PCB is convenient to move from the conveying belt 2 to the connecting table 3, the upper surface of the connecting table 3 is provided with the excision groove 12, the shape is the same as the shape of the lower surface of the cutter head 11, the cutter head 11 is conveniently clamped in the excision groove 12 to cut off the protective film, the driving wheel 14 and the supporting columns 15 are rotationally connected inside the connection table 3, the supporting columns 15 are arranged at one end, close to the conveying belt 2, of the connection table 3 to support the conveying belt 13 to be flush with the surface of the connection table 3, a group of supporting columns 15 are connected with springs 16 on the outer wall of the connection table 3, the springs 16 are embedded in the outer wall of the connection table 3, when the cutter head 11 descends into the excision groove 12 to cut off, the cutter head 11 also presses the conveying belt 13 to enable a place where the conveying belt 13 contacts with the cutter head 11 to sink, so that the supporting columns 15 and the springs 16 are compressed, the deformation of the conveying belt 13 is matched, the conveying belt 13 is prevented from being broken by the cutter head 11, the air pipe 8 and the air outlet 6 are movably connected through the bellows 9, the top end of the bellows 9 is fixedly connected with the air pipe 8, the bottom end of the bellows 9 is fixedly connected with the air outlet 6, the joint of the air outlet 6 and the air pipe 8 can be moved, the fixture blocks 18 are fixedly installed at the two ends of the electrostatic rod 504, the fixture blocks 18 are in barb shapes, the upward inclined parts of the fixture blocks 18 face the middle of the electrostatic rod 504, two groups of fixture blocks 18 are symmetrically arranged at the two ends of the electrostatic rod 504, the protective film is formed into a herringbone shape with two high middle sides and two low sides, the PCB is convenient to be conveyed into the lower portion of the protective film, the tail ends of the fixture blocks 18 are smooth round corners, and the fixture blocks 18 are prevented from sliding to break the protective film.
The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.
Claims (8)
1. The anti-scratch treatment process for the thick copper PCB welding surface is characterized by comprising a PCB and a protective film attached to the PCB welding surface;
the anti-scratch treatment process for the thick copper PCB welding surface comprises the following steps:
step one: penetrating the rolled protective film outside a rotating roller (4) of the PCB anti-scratch processing equipment, tensioning the protective film through the plurality of rotating rollers (4), penetrating the protective film out of the other end of the PCB anti-scratch processing equipment, and starting the PCB anti-scratch processing equipment to enable a conveyor belt (2) to rotate, wherein the conveyor belt (2) drives the produced PCB to enter the equipment;
step two: the protection film is conveyed forwards under the rotation action of the plurality of rotating rollers (4), at the moment, the static applying mechanism (5) is started, the static bars (504) connected with the positive electrode wires (502) enable the protection film sliding through the static bars (504) to be provided with static electricity, the conveying belt (2) drives the PCB to enter the PCB anti-scratch processing equipment, the PCB passes through the lower part of the static bars (504) along with the circulation of the conveying belt (2), and the static electricity carried on the protection film enables the protection film to be adsorbed on the surface of the PCB along with the approaching of the conveying belt (2) and the protection film, but at the moment, the lamination gaps between the protection film and the PCB are more;
step three: the PCB board which is primarily attached to the protective film is conveyed to the lower portion of the air outlet (6) under the driving of the conveyor belt (2), high-pressure air is led into the air outlet (6) through an air pipe (8) connected to the rear of the air outlet (6), then the air outlet (6) begins to blow downwards, and the protective film is attached to the PCB board more tightly by virtue of blown air;
step four: when the air outlet (6) starts to discharge air, the motor (703) is started, the motor (703) drives the rotary table (704) at the output end to rotate, the sliding block (707) at the outer side of the rotary table (704) drives the top end of the connecting rod (702) which is connected to the outer side in a clamping mode to swing, the connecting rod (702) swings around the rotary head (705), the lower portion of the connecting rod (702) is longer, larger swing amplitude can be obtained, the connecting rod (702) drives the air outlet (6) to swing in a reciprocating mode, and the air outlet (6) sweeps out blown air from the upper portion of the protective film;
step five: the PCB which is tightly attached to the protective film is conveyed to the end from the conveyor belt (2), the PCB is conveyed to the connection table (3), then the conveyor belt (13) at the middle section of the connection table (3) drives the PCB to move to the position below the cutter head (11), at the moment, the hydraulic column (10) is started, the hydraulic column (10) drives the cutter head (11) to start descending, the cutter head (11) is clamped and inserted into the cutting groove (12), and the protective film positioned above the PCB is cut off;
step six: the hydraulic column (10) drives the tool bit (11) to ascend, the PCB after the redundant protective film is cut off is sent out by the conveyer belt (13) to enter the next production, and the part of the protective film which is not cut off is driven by the rotating roller (4) outside the PCB anti-scratch processing equipment to wind up.
2. The process for the anti-scratch treatment of the thick copper PCB welding surface according to claim 1, wherein the anti-scratch treatment equipment for the PCB comprises a shell (1), a conveyor belt (2), a connection table (3), a rotary roller (4), an electrostatic applying mechanism (5), an air pipe (8), a hydraulic column (10) and a cutter head (11), wherein the rotary roller (4) is rotationally connected inside the shell (1), a protective film is rotationally connected outside the rotary roller (4), the conveyor belt (2) is arranged below the shell (1), the middle section of the conveyor belt (2) is disconnected, a conductive block (17) is internally connected at the disconnection position, the conductive block (17) is arranged at intervals, the electrostatic applying mechanism (5) is fixedly arranged at the inner side of the shell (1), one end of the electrostatic applying mechanism (5) is connected with the protective film, the other end of the electrostatic applying mechanism (5) is in contact with the conveyor belt (2), the connection table (3) is fixedly connected with one end of the conveyor belt (2), the shell (8) is fixedly arranged at the lower end of the shell (1), the air pipe (8) is fixedly arranged at the top of the air pipe (8), the air outlet mechanism (7) is fixedly arranged at the bottom of the air pipe (6), the air outlet mechanism (7) is fixedly arranged at the top of the air outlet (6), the hydraulic column (10) is arranged on the lower surface of the top of the shell (1), the hydraulic column (10) and the air pipe (8) are in the same straight line, and the cutter head (11) is fixedly arranged on the lower surface of the hydraulic column (10).
3. The anti-scratch treatment process for the thick copper PCB welding surface according to claim 2, wherein the static electricity applying mechanism (5) comprises a power supply box (501), a positive electrode wire (502), a grounding wire (503), a static bar (504), a support (505), a pressure spring (506) and a contact block (507), the power supply box (501) is fixedly arranged on the inner wall of the shell (1), the positive electrode wire (502) is led out from the inside of the power supply box (501), one end of the positive electrode wire (502) is connected with the static bar (504), the static bar (504) is connected with a protective film, the support (505) is fixedly arranged in the shell (1), the grounding wire (503) is led out from the other side of the power supply box (501), the grounding wire (503) is fixedly arranged on the surface of the support (505), one end of the grounding wire (503) is fixedly connected with the contact block (507), and the contact block (507) is fixedly connected with the upper surface of the support (505) through the pressure spring (506) on the bottom surface.
4. The anti-scratch treatment process for the thick copper PCB welding surface according to claim 2, wherein the rotating mechanism (7) comprises a supporting plate (701), a connecting rod (702), a motor (703), a turntable (704), a rotating head (705) and a sliding block (707), the supporting plate (701) is fixedly arranged on the outer wall of an air pipe (8), the motor (703) is fixedly arranged on the upper surface of the supporting plate (701), the turntable (704) is fixedly arranged at the output end of the motor (703), the sliding block (707) is fixedly arranged on one side of the turntable (704), a sliding groove (706) is formed in the top end of the connecting rod (702), the sliding block (707) is connected inside the sliding groove (706) in a clamping mode, the rotating head (705) is fixedly arranged at one end of the supporting plate (701), the connecting rod (702) is spliced inside the rotating head (705), and the bottom end of the connecting rod (702) is fixedly arranged on one side of an air outlet (6).
5. The anti-scratch treatment process for the thick copper PCB welding surface according to claim 2 is characterized in that the middle part of the connection table (3) is disconnected, a conveying belt (13) is embedded in the disconnected part of the connection table (3), one end of the conveying belt (13) close to the conveying belt (2) is sunken into an arc shape fitting the conveying belt (2), a cutting groove (12) is formed in the upper surface of the connection table (3), and the shape of the cutting groove (12) is the same as that of the lower surface of the cutter head (11).
6. The anti-scratch treatment process for the thick copper PCB board welding surface according to claim 5, wherein a driving wheel (14) and a supporting column (15) are rotatably connected inside the connection table (3), the supporting column (15) is arranged at one end, close to the conveyor belt (2), of the connection table (3), a group of springs (16) are connected to the outer walls of the supporting columns (15), and the springs (16) are embedded in the outer walls of the connection table (3).
7. The anti-scratch treatment process for the thick copper PCB welding surface according to claim 2 is characterized in that the air pipe (8) is movably connected with the air outlet (6) through a corrugated pipe (9), the top end of the corrugated pipe (9) is fixedly connected with the air pipe (8), and the bottom end of the corrugated pipe (9) is fixedly connected with the air outlet (6).
8. The anti-scratch treatment process for the thick copper PCB welding surface according to claim 2, wherein clamping blocks (18) are fixedly installed at two ends of the electrostatic rod (504), the clamping blocks (18) are in barb shapes, the upward inclined parts of the clamping blocks (18) face the middle part of the electrostatic rod (504), the two groups of clamping blocks (18) are symmetrically arranged at two ends of the electrostatic rod (504), and the tail ends of the clamping blocks (18) are smooth round corners.
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| CN117894686B (en) * | 2023-11-23 | 2024-06-14 | 天水华洋电子科技股份有限公司 | Process for quickly attaching dry film to integrated electroplating etching lead frame |
| CN117835602B (en) * | 2024-03-04 | 2024-05-24 | 惠州威尔高电子有限公司 | Anti-offset lamination equipment and lamination method for circuit board production |
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