CN114302567B - Ultraviolet exposure device for outer layer circuit of printed circuit board - Google Patents
Ultraviolet exposure device for outer layer circuit of printed circuit board Download PDFInfo
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- CN114302567B CN114302567B CN202210237011.6A CN202210237011A CN114302567B CN 114302567 B CN114302567 B CN 114302567B CN 202210237011 A CN202210237011 A CN 202210237011A CN 114302567 B CN114302567 B CN 114302567B
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Abstract
The invention discloses an ultraviolet exposure device for an outer layer circuit of a printed circuit board, which comprises a processing box, wherein the top of the processing box is provided with an exposure bin, the bottom of the exposure bin is provided with a support frame, the support frame is provided with an electric telescopic rod, an ejector rod of the electric telescopic rod penetrates into the exposure bin and is connected with a circuit board mounting seat through a connecting column, and one side of the exposure bin is provided with a first stepping motor. The CDD exposure machine automatically carries out light source closing delay and light source opening delay, and the moving speed setting and the displacement setting of a moving platform related to moving track data are matched, so that segmented step-by-step exposure is carried out on the front and back positions of a circuit board, and in the process that a second stepping motor executes displacement and moving speed control information to drive a baffle to move left and right, the baffle and a light inlet formed in the baffle can realize segmented step-by-step shielding and light transmission on the left and right directions of the circuit board.
Description
Technical Field
The invention belongs to the technical field of printed circuit board manufacturing, and particularly relates to an ultraviolet exposure device for an outer layer circuit of a printed circuit board.
Background
The outer layer circuit of the printed circuit board is usually presented by adopting an etching mode, before the etching process, an image transfer process needs to be carried out on the surface of the printed circuit board, namely, a photosensitive material is coated on the surface of the printed circuit board, the film for routing the outer layer circuit is irradiated by ultraviolet rays, the ultraviolet rays are irradiated on the photosensitive material of the surface of the printed circuit board through the transparent place of the film, the photoinitiator in the photosensitive material absorbs light energy and decomposes into free radicals, the free radicals initiate photopolymerization monomers to carry out polymerization crosslinking reaction, a macromolecular structure which is insoluble in dilute alkali solution is formed after the reaction, the film is printed at a brown place, the ultraviolet rays cannot penetrate through the transparent place, after exposure treatment, the surface of the printed circuit board is cleaned by dilute alkali solution, and the macromolecular structure for forming the outer circuit is reserved.
At present, the adopted ultraviolet exposure machine is used for exposing photosensitive materials coated on a printed circuit board, each ultraviolet exposure machine can only be provided with one film to carry out film blocking, the film is switched to realize ultraviolet exposure on different circuit boards, the film needs to be manually assembled and disassembled, because the circuit board has a complicated structure due to the design of circuits, in order to effectively carry out polymerization crosslinking reaction on the photosensitive materials forming thinner circuits and denser circuits, sectional slow-step exposure is needed, which is a method for improving the circuit precision, in the process, the traditional CDD exposure machine cannot be adopted, but the high-price digital exposure machine is adopted to realize the sectional slow-step exposure, a digital controller is used for carrying out digital editing on an exposure mirror of the digital exposure machine, the ultraviolet rays emitted by the same horizontal plane line for multiple times and multiple time periods are realized, but obviously, the manufacturing cost of each ultraviolet exposure machine is greatly improved, there is therefore a need for a single station uv exposure machine that can achieve automatic replacement of exposure lines and segmented step exposure in combination with a conventional CDD exposure machine.
Disclosure of Invention
The invention aims to provide an ultraviolet exposure device for an outer layer circuit of a printed circuit board, which is used for solving the problems in the prior art.
In order to achieve the purpose, the invention provides the following technical scheme: an ultraviolet exposure device of an outer layer circuit of a printed circuit board comprises a processing box, wherein an exposure bin is arranged at the top of the processing box, a support frame is arranged at the bottom of the exposure bin, an electric telescopic rod is arranged on the support frame, an ejector rod of the electric telescopic rod penetrates into the exposure bin and is connected with a circuit board mounting seat through a connecting column, a first stepping motor is arranged at one side of the exposure bin, a rotor shaft of the first stepping motor penetrates into the exposure bin and is connected with a bearing disc, a rotary frame is arranged on the bearing disc, each side part of the rotary frame is provided with a light hole, the light hole is tightly pressed by a pressing mechanism, a fixed disc is arranged at the other side of the exposure bin, a supporting plate is arranged on the fixed disc and is inserted into the rotary frame, a track machine is arranged at the bottom of the supporting plate, and a moving platform of the track machine is provided with a CDD exposure machine, the device comprises an exposure bin, a rotary frame, a baffle, a driving mechanism and a light inlet, wherein the exposure bin is internally provided with a rotary frame, the lower side position of the rotary frame is slidably provided with the baffle, the driving mechanism capable of driving the baffle to transversely move is further arranged in the exposure bin, and the baffle is provided with the light inlet.
Preferably, one side of handling case and exposure storehouse is provided with the threading cover, each circuit in the exposure storehouse penetrates the threading cover and penetrates and handles the incasement.
Preferably, be provided with the electric telescopic handle controller in the processing case, electric telescopic handle's power input end is connected to electric telescopic handle's defeated accuse end lead to cable of electric telescopic handle controller, electric telescopic handle controller's main power input end passes through the cable and connects the peripheral hardware power, one side of electric telescopic handle controller is provided with the host computer, the electric telescopic handle controller is connected through the information line to a signal incoming end of host computer, the opposite side of processing case is provided with the industrial computer, the information incoming end of host computer passes through the information connection end of transmission line connection industrial computer.
Preferably, it is just multilateral tubular construction to revolve the frame, hold-down mechanism is including setting up the clamping ring at revolving each lateral part of frame, the clamping ring is the quad ring, be equipped with the groove of impressing on the clamping ring, be provided with soft ring in the indent, soft ring is the quad ring, the groove cover of impressing goes into film and the border of soft ring pressfitting at the film.
Preferably, the other side of handling the incasement and being located the electric telescopic handle driver is provided with first driver, the accuse end of defeated of first driver passes through the controlled end of cable connection first step motor, the signal input part of first driver passes through the information incoming end of information line connection host computer.
Preferably, be provided with first encoder subassembly in the exposure storehouse, first encoder subassembly is provided with first mount including setting up in the exposure storehouse and being close to the position that bears the dish, be provided with first encoder on the first mount, the moving axis of first encoder is worn out first mount and is provided with first from the driving wheel, first from the driving wheel outer fringe and the outer fringe that bears the dish all are equipped with first drive line, first drive line meshing from the driving wheel bears the first drive line of dish, it is provided with programmable logic controller to handle the incasement, the output line connection programmable logic controller signal incoming end of first encoder, and programmable logic controller's program incoming end passes through the information output end of transmission line connection host computer.
Preferably, the fixed disk is provided with a light shielding pipe, the light shielding pipe is arranged in the rotary frame, the supporting plate, the track machine and the CDD exposure machine are positioned in the light shielding pipe, the lower side of the light shielding pipe is provided with an opening, a power line and a control line of the track machine penetrate out from a front port of the rotary frame, wherein the power line of the track machine is connected with an external power supply, and the control line of the track machine is connected with a signal access end of the host machine.
Preferably, the driving mechanism comprises a supporting tube arranged on one side in the exposure chamber, one end of the baffle plate is inserted into the supporting tube, track grooves are formed in the front and rear positions of the inner wall of the supporting tube, track wheels are arranged in the front and rear positions of one end of the baffle plate inserted into the supporting tube, idler wheels of the track wheels are inserted into the track grooves, a vertical rod is arranged at the bottom in the exposure chamber, a mounting frame is arranged at the top of the vertical rod, the mounting frame is sleeved with the baffle plate, the mounting frame is a U-shaped plate, a power assembly is arranged at the top of the mounting frame and comprises a second stepping motor arranged on the mounting frame, a driving wheel is arranged at a rotor shaft of the second stepping motor, second driving grains are arranged on the outer edge of the driving wheel and the upper end of the baffle plate, the second driving grains of the driving wheel are meshed with the second driving grains on the baffle plate, and a second driver is arranged on one side, which is positioned on the first driver, in the treatment chamber, the controlled end of the second stepping motor is connected with the output control end of the second driver through a cable, and the signal input end of the second driver is connected with the information access end of the host through an information wire.
Preferably, the bottom of mounting bracket is provided with the second encoder subassembly, the second encoder subassembly is including setting up the second mount in the mounting bracket bottom, be provided with the second encoder on the second mount, the moving axis of second encoder is worn out the second mount and is provided with the second from the driving wheel, the second all is equipped with the third drive line from the lower extreme of driving wheel outer fringe and baffle, the second drives the third drive line of line meshing baffle from the third of driving wheel, programmable controller's signal incoming end is connected to the output of second encoder.
Compared with the prior art, the invention has the beneficial effects that:
in the invention, the industrial personal computer selects the data strips stored in the host computer aiming at different circuit board extending heights and directionally conveys the data strips to the electric telescopic rod controller, thereby realizing that the circuit board mounting seat loaded with the industrial personal computer is lifted to different positions aiming at different circuit boards to meet the requirements of different exposure heights, realizing the control of a first driver aiming at the rotation angle of a first stepping motor under the action of the industrial personal computer, because the six side parts of a rotating frame adopt a pressing mechanism to press and print the film sheets of different outer circuits, the rotating frame can be driven to rotate for 60 degrees, 120 degrees, 180 degrees, 240 degrees or 360 degrees to stop, the film sheet at the lower part is kept to be forwardly corresponding to the CDD exposure machine, and the ultraviolet rays emitted by the CDD exposure machine are prevented from being emitted through the film sheets at other side positions to influence the polymerization and crosslinking reaction of photosensitive materials on the circuit board according to a preset circuit through the blocking of the light blocking tube, under the function, a plurality of film sheets printed with different external circuits can be loaded for automatic replacement, and the requirements of ultraviolet exposure on different circuit boards are met, so that the function of automatically replacing exposed circuits can be realized;
in the invention, the moving track data is stored in the track machine execution host machine, so that the moving platform of the track machine can drive the CDD exposure machine to move back and forth for exposure according to the moving track data, under the driving of the track machine, the CDD exposure machine moves back and forth, the CDD exposure machine automatically carries out light source closing delay and light source opening delay, in cooperation with the setting of the moving speed and the setting of the displacement of the moving platform related in the moving track data, thereby realizing the step-by-step exposure of the front and the back positions of the circuit board in a subsection way, the second driver controls the rotor shaft of the second stepping motor to rotate according to the displacement and the moving speed control information, namely, in the process that the second stepping motor executes displacement and moving speed control information to drive the baffle to move left and right, the baffle and the light inlet arranged on the baffle can realize segmented step-by-step shielding and light transmission in the left and right directions of the circuit board, so that the segmented step-by-step exposure can be realized by combining a traditional CDD exposure machine.
Drawings
FIG. 1 is a schematic front view of the present invention;
FIG. 2 is a schematic view in partial cutaway of FIG. 1;
FIG. 3 is a schematic top view of FIG. 1;
FIG. 4 is an enlarged view of a portion a of FIG. 2;
fig. 5 is an enlarged schematic view of the structure at b of fig. 2.
In the figure: 1 processing box, 2 exposure storehouse, 3 support frames, 4 electric telescopic handle, 5 spliced poles, 6 circuit board mount pads, 7 electric telescopic handle driver, 8 first step motor, 9 bear the dish, 10 revolve the frame, 11 light trap, 12 clamping rings, 13 film, 14 soft rings, 15 first encoder subassemblies, 16 first driver, 17 fixed disks, 18 shading pipes, 19 openings, 20 backup pads, 21 track machine, 22 CDD exposure machine, 23 programmable controller, 24 stay tubes, 25 baffles, 26 track grooves, 27 track wheel, 28 pole setting, 29 mounting bracket, 30 power component, 31 second encoder subassemblies, 32 light inlet, 33 second driver, 34 host computer, 35, 101 threading cover.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
Referring to fig. 1, 2 and 3, an ultraviolet exposure device for outer layer circuit of printed circuit board comprises a processing box 1, an exposure chamber 2 is fixed on the top screw of the processing box 1, the inner wall of the exposure chamber 2 is coated with carbon black light absorption coating to ensure that the emitted ultraviolet light can not be refracted on the inner wall of the exposure chamber 2 and influence on photosensitive material on the circuit board, a threading cover 101 is fixed on the right side screw of the processing box 1 and the exposure chamber 2, each circuit in the exposure chamber 2 penetrates into the threading cover 101 and the processing box 1, a support frame 3 is welded on the middle side of the bottom of the exposure chamber 2, an electric telescopic rod 4 is fixed on the support frame 3 by bolts, a mandril of the electric telescopic rod 4 penetrates through a sliding hole arranged at the bottom of the exposure chamber 2 and penetrates into the exposure chamber 2, the mandril flange of the electric telescopic rod 4 is connected with a connecting column 5, the top of the connecting column 5 and a circuit board mounting seat 6 are an integral piece, the circuit board mounting seat 6 is a board with a square circuit board groove at the upper end, the size of a circuit board groove on the circuit board mounting seat 6 is designed according to the size of a circuit board, namely, the circuit board can be slidably inserted into the circuit board groove of the circuit board mounting seat 6, an electric telescopic rod controller 7 is fixed on a screw in the processing box 1, an output control end of the electric telescopic rod controller 7 is connected with a power supply input end of an electric telescopic rod 4 through a cable, a main power supply input end of the electric telescopic rod controller 7 is connected with an external direct-current power supply through a cable, the model of the electric telescopic rod 4 is FTG50, the model of the electric telescopic rod controller 7 is AQMD3610NS-A2, a host 34 is fixed on a left screw of the electric telescopic rod controller 7, the model of the host 34 is IPC-611, a signal access end of the host 34 is connected with the electric telescopic rod controller 7 through an information wire, the host 34 and the electric telescopic rod controller 7 achieve a 485 transmission protocol, an industrial personal computer 35 is embedded and fixed on the left side of the processing box 1, the information access end of host computer 34 passes through the information access end of transmission line connection industrial computer 35, selects the data strip of height to different circuit boards that deposits in the host computer 34 through industrial computer 35 to carry the data strip orientation to electric telescopic handle controller 7 in, thereby can realize raising to different positions to different circuit boards, with the circuit board mount pad 6 that will load it, in order to satisfy the demand of different exposure heights.
Referring to fig. 1, 2, 3 and 4, a first stepping motor 8 is fixed to a rear side screw of an exposure chamber 2, the type of the first stepping motor 8 is 86HS120, a rotor shaft of the first stepping motor 8 penetrates through a through hole formed in the rear end of the exposure chamber 2 and is connected to the central position of the rear end of a bearing plate 9 in a flange manner, a rotary frame 10 is arranged on the bearing plate 9, the rotary frame 10 and the bearing plate 9 are integrated, each side portion of the rotary frame 10 is provided with a light transmission hole 11, the rotary frame 10 is of a regular hexagonal tube structure, a pressing mechanism comprises a pressing ring 12 fixed to each side portion of the rotary frame 10 by screws, the pressing ring 12 is a square ring, a pressing groove is arranged on the pressing ring 12 and is a square ring groove, a soft ring 14 is adhered to the pressing groove, the soft ring 14 is a square ring, the soft ring 14 is made of natural rubber, the pressing groove is sleeved to the film 13 and the soft ring 14 is pressed to the edge of the film 13, and the soft ring 14 can soft protect the outer edge of the film 13, therefore, the film 13 can be flatly fixed on the light holes 11 at the six side portions of the rotating frame 10 through the pressing mechanism, the first driver 16 is fixed in the processing box 1 by screws at the right side position of the electric telescopic rod driver 7, the model of the first driver 16 is MA860H, the output control end of the first driver 16 is connected with the controlled end of the first stepping motor 8 through cables, the signal input end of the first driver 16 is connected with the information access end of the host computer 34 through an information wire, the main power supply end of the first driver 16 is connected with an external power supply through cables, the host computer 34 stores control information of each angle of the rotation of the rotor shaft of the first stepping motor 8, and the control information of the angle corresponds to the circuit format information of each film 13, therefore, under the action of the operator control computer 35, the control of the first driver 16 on the rotation angle of the first stepping motor 8 is realized, in the invention, because the rotating frame 10 is a regular hexagonal tube, therefore, the rotation angles of the rotary frame 10 are 60 degrees, 120 degrees, 180 degrees, 240 degrees and 360 degrees, the film 13 at the lower part can be kept to be corresponding to the CDD exposure machine 22 in the forward direction, the fixed disk 17 is fixed on the front side bolt of the exposure bin 2, the light shielding tube 18 is arranged at the rear end of the fixed disk 17, the fixed disk 17 and the light shielding tube 18 are integrated, the light shielding tube 18 is inserted into the rotary frame 10, the support plate 20, the rail machine 21 and the CDD exposure machine 22 are positioned in the light shielding tube 18, the lower side of the light shielding tube 18 is provided with the opening 19, ultraviolet light emitted by the CDD exposure machine 22 can only be emitted through the opening 19 at the lower side, through the blocking of the light shielding tube 18, the ultraviolet light emitted by the CDD exposure machine 22 is prevented from being emitted through the film 13 at other side positions to influence the polymerization and crosslinking reaction of photosensitive materials on the circuit board according to a preset line, the support plate 20 is welded at the rear end of the fixed disk 17 and is inserted into the rotary frame 10, the support plate 20 is fixed with the rail machine 21, the track machine 21 is an automatic track moving machine customized by Wuxi-Shishida mechanical equipment Co., Ltd, the total length is 60 cm, the width is 20 cm, two moving platforms can be carried, CDD exposure machines 22 are respectively fixed on the two moving platforms of the track machine 21 through screws, the two CDD exposure machines 22 can carry out double-region synchronous or asynchronous moving exposure on the front and back regions of a circuit board under the condition that the moving platforms of the track machine 21 move back and forth, the single-station moving exposure of the CDD exposure machines 22 can be realized under the condition that the light source of one CDD exposure machine 22 is controlled to be turned off, the power line and the control line of the track machine 21 penetrate out from the front port of the rotary frame 10, wherein the power line of the track machine 21 is connected with an external power supply, the control line of the track machine 21 is connected with the signal access end of the host machine 34, the storage unit of the host machine 34 stores the moving track data of the moving platform of the track machine 21 corresponding to each circuit board, therefore, only by operating the operator control machine 35, the track machine 21 executes the moving track data stored in the host 34, so that the moving platform of the track machine 21 can drive the CDD exposure machine 22 to move back and forth for exposure according to the moving track data, the power end of the CDD exposure machine 22 is connected with an external power supply through a cable, the microcircuit control end of the CDD exposure machine 22 is connected with the host 34 through a transmission line, and the delay on-off control information of the CDD exposure machine 22 in the routing process of different external circuits of the circuit board is stored in the host 34, so that under the condition that the track machine 21 drives the CDD exposure machine 22 to move back and forth, the light source turn-off delay and the light source turn-on delay are automatically performed, and the moving speed setting and the displacement setting of the moving platform related to the moving track data are matched, thereby realizing the step-by-step exposure of the front and rear positions of the circuit board in a sectional manner.
Referring to fig. 2, a first encoder assembly 15 is arranged at the rear end in the exposure chamber 2, the first encoder assembly 15 comprises a first fixing frame which is fixed at the rear end in the exposure chamber 2 by screws and is arranged at a position close to the bearing disc 9, the first fixing frame is of a right-angle plate structure, a first encoder is fixed on the first fixing frame by screws, a moving shaft of the first encoder penetrates through a first moving shaft hole arranged on the first fixing frame and is in key connection with a first driven wheel, first driving patterns are uniformly arranged on the outer edge of the first driven wheel and the outer edge of the bearing disc 9, the first driving patterns are convex lines which are mutually spaced by 0.1 mm, the first driving patterns of the first driven wheel are meshed with the first driving patterns of the bearing disc 9, a programmable controller 23 is arranged in the processing box 1, an output line of the first encoder is connected with a signal input end of the programmable controller 23, and a program input end of the programmable controller 23 is connected with an information output end of the host 34 through a transmission line, under bearing dish 9 is rotatory, the first rotatory from the driving wheel rotation in the moving axis of first encoder, first encoder can be with bearing in dish 9 rotary displacement information transmission to host computer 34, go into in the host computer 34 and bear 9 rotary displacement standard information, will bear the real-time rotary displacement information of dish 9 and bear the contrast of dish 9 rotary displacement standard information, if the deviation appears, frame 10 is rotatory promptly to have the declination, can indicate operating personnel to maintain or change first step motor 8, thereby guarantee the thin forest piece 13 of downside can be just to circuit board mount pad 6, the realization is to revolving 10 the angle monitoring of frame at the in-process of replacement exposure circuit.
Referring to fig. 2 and 5, a driving mechanism capable of driving the baffle 25 to move transversely is further arranged in the exposure chamber 2, the driving mechanism comprises a support tube 24 fixed at the right side in the exposure chamber 2 through screws, the support tube 24 is a square tube, the right end of the baffle 25 is inserted into the support tube 24, track grooves 26 are respectively arranged at the front and rear positions of the inner wall of the support tube 24, track wheels 27 are respectively fixed at the front and rear positions of the right end of the baffle 25 through screws, rollers of the track wheels 27 are inserted into the track grooves 26 and roll in the track grooves 26 through the track wheels 27, so that the baffle 25 moves left and right and is smoothly and stably, two upright rods 28 are welded at the inner bottom of the exposure chamber 2, a mounting frame 29 is welded at the top of the upright rods 28, the mounting frame 29 is sleeved in the baffle 25, the mounting frame 29 is a U-shaped plate, a power assembly 31 is arranged at the top of the mounting frame 29, the power assembly 31 comprises a second step motor fixed on the mounting frame 29 through screws, and the type of the second step motor is J-5718HB1401, the rotor shaft of the second stepping motor is in key connection with the driving wheel, the outer edge of the driving wheel and the upper end of the baffle 25 are uniformly provided with second driving lines, the second driving lines are convex lines which are mutually spaced by 0.1 mm, the second driving lines of the driving wheel are meshed with the second driving lines on the baffle 25, the baffle 25 is driven by the second stepping motor to move left and right, a second driver 33 is arranged at one side position of the first driver 16 in the processing box 1, the model of the second driver 33 is DM542, the controlled end of the second stepping motor is connected with the output control end of the second driver 33 through a cable, the signal input end of the second driver 33 is connected with the information access end of the host 34 through an information line, the displacement and the moving speed control information of the baffle 25 in the exposure transverse area of each circuit board line are stored in the host 34, the displacement and the moving speed control information which are attached to the second driver 33 are executed through the host 34 after the circuit board type is selected by operating the industrial personal computer 35, thereby the rotor shaft of the second stepping motor is controlled to rotate by the second driver 33 according to the displacement and the moving speed control information, the baffle 25 is provided with the light inlet 32, the front and back length of the light inlet 32 is the same as that of the film 13, the left and right width of the light inlet 32 is 3 cm, namely, in the process that the second stepping motor executes the displacement and the moving speed control information to drive the baffle 32 to move left and right, the baffle 32 and the light inlet 32 arranged thereon can realize the segmented step-by-step shielding and light transmission of the left and right directions of the circuit board, the bottom of the mounting rack 29 is provided with the second encoder component 31, the second encoder component 31 comprises a second fixing frame arranged at the bottom of the mounting rack 29, the second fixing frame is a rectangular plate, the second encoder is fixed by screws on the second fixing frame, the first encoder and the second encoder are of the same type, the type is ohm dragon E6B2-CWZ6C, the moving shaft of the second encoder penetrates through a second moving shaft hole arranged on the second fixed frame and is connected with a second driven wheel in a key mode, third driving patterns are uniformly arranged on the outer edge of the second driven wheel and the lower end of the baffle plate 25, the third driving patterns of the second driven wheel are meshed with the third driving patterns of the baffle plate 25, the third driving patterns are convex lines with the mutual interval of 0.1 mm, the output end of the second encoder is connected with the signal access end of the programmable controller 23, the type of the programmable controller 23 selects Siemens 6ES 7214-1 AD23-0XB0/8, under the condition that the baffle plate 25 moves left and right, the moving shaft of the second encoder rotates, the first encoder can transmit left and right movement information of the baffle plate 25 to the host machine 34, standard transverse movement information of the baffle plate 25 for each circuit board is stored in the host machine 34, the real-time transverse movement information of the baffle plate 25 is compared with the standard transverse movement information of the baffle plate 25, and if deviation occurs, that is, the deviation exists in the left and right displacement of the baffle 25, and the operator can be prompted to maintain and replace the second stepping motor.
The working principle of the embodiment is as follows: when in use, the circuit board mounting seat 6 aiming at different circuit boards can be replaced on the ejector rod of the electric telescopic rod 4 according to the types of the circuit boards, the circuit boards are placed in the circuit board grooves arranged in the circuit board mounting seat 6, the data strips stored in the host 34 aiming at different circuit board extending heights are selected through the industrial personal computer 35, and the data strips are directionally conveyed into the electric telescopic rod controller 7, so that the circuit board mounting seat 6 loaded with the circuit boards can be lifted to different positions aiming at different circuit boards, the requirements of different exposure heights are met, the first driver 16 can control the rotating angle of the first stepping motor 8 under the action of the industrial personal computer 35, as the six side parts of the rotating frame 10 are all pressed by the pressing mechanisms to print the film sheets 13 of different outer circuits, the rotating frame 10 can be driven to rotate by 60 degrees, 120 degrees, 180 degrees, 240 degrees or 360 degrees to stop, the film sheets 13 at the lower part are kept to forwardly correspond to the CDD exposure machine 22, through the blocking of the light shielding tube 18, the ultraviolet light emitted by the CDD exposure machine 22 is prevented from being emitted through the film sheets 13 at other side positions to influence the polymerization crosslinking reaction of photosensitive materials on a circuit board according to a preset circuit, and under the function, a plurality of film sheets 13 printed with different external circuits can be loaded for automatic replacement, so that the requirements of ultraviolet exposure on different circuit boards are met, and the function of automatically replacing an exposure circuit can be realized;
the industrial personal computer 35 is operated to enable the track machine 21 to store moving track data in the execution host 34, namely, the moving platform of the track machine 21 drives the CDD exposure machine 22 to move back and forth and expose according to the moving track data, the two CDD exposure machines 22 carry out double-area synchronous or asynchronous moving exposure on the front area and the rear area of the circuit board under the back and forth movement of the moving platform of the track machine 21, and under the condition that the light source of one CDD exposure machine 22 is controlled to be closed, single moving exposure of the CDD exposure machine 22 is realized, under the condition that the track machine 21 drives the CDD exposure machine 22 to move back and forth, the CDD exposure machine 22 automatically carries out light source closing delay and light source opening delay, the moving platform moving speed setting and the displacement setting related in the moving track data are matched, so that the front and rear positions of the circuit board are subjected to step exposure, after the circuit board type is selected by operating the industrial personal computer 35, the attached displacement and moving speed control information are executed by the second driver 33 through the host 34, therefore, the rotor shaft of the second stepping motor is controlled to rotate through the second driver 33 according to the displacement and moving speed control information, namely, in the process that the second stepping motor executes the displacement and moving speed control information to drive the baffle 32 to move left and right, the baffle 32 and the light inlet 32 arranged on the baffle 32 can realize segmented step-by-step shielding and light transmission on the left and right directions of the circuit board, so that the segmented step-by-step exposure can be realized by combining the traditional CDD exposure machine, and the method is suitable for designing the circuit board with a complicated and fine circuit structure.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.
Claims (8)
1. An ultraviolet exposure device of outer layer circuit of printed circuit board is characterized in that: the device comprises a processing box (1), wherein an exposure bin (2) is arranged at the top of the processing box (1), a support frame (3) is arranged at the bottom of the exposure bin (2), an electric telescopic rod (4) is arranged on the support frame (3), an ejector rod of the electric telescopic rod (4) penetrates into the exposure bin (2) and is connected with a circuit board mounting seat (6) through a connecting column (5), a first stepping motor (8) is arranged on one side of the exposure bin (2), a rotor shaft of the first stepping motor (8) penetrates into the exposure bin (2) and is connected with a bearing disc (9), a rotary frame (10) is arranged on the bearing disc (9), each side part of the rotary frame (10) is provided with a light hole (11), the light hole (11) is tightly pressed on a film (13) through a pressing mechanism, the rotary frame (10) is of a positive multi-side type tube structure, the pressing mechanism comprises a pressing ring (12) arranged on each side part of the rotary frame (10), the pressing ring (12) is a square ring, an indentation groove is arranged on the pressing ring (12), a soft ring (14) is arranged in the indentation groove, the soft ring (14) is a square ring, the film sheet (13) is sleeved in the press-in groove, the soft ring (14) is pressed on the edge of the film sheet (13), the other side of the exposure bin (2) is provided with a fixed disc (17), a support plate (20) is arranged on the fixed disc (17), the support plate (20) is inserted into the rotary frame (10), the bottom of the supporting plate (20) is provided with a track machine (21), a moving platform of the track machine (21) is provided with a CDD exposure machine (22), a baffle plate (25) is arranged in the exposure bin (2) and is positioned at the lower side of the rotary frame (10) in a sliding way, still be provided with the actuating mechanism that can drive baffle (25) lateral shifting in exposure storehouse (2), be provided with into light mouth (32) on baffle (25).
2. The ultraviolet exposure apparatus for the outer layer circuit of the printed circuit board according to claim 1, characterized in that: one side of the processing box (1) and the exposure bin (2) is provided with a threading cover (101), and each line in the exposure bin (2) penetrates through the threading cover (101) and penetrates into the processing box (1).
3. The ultraviolet exposure apparatus for outer layer wiring of a printed circuit board according to claim 1, characterized in that: it is provided with electric telescopic handle controller (7) in case (1) to handle, the defeated accuse end of electric telescopic handle controller (7) leads to the power input end of cable junction electric telescopic handle (4), the peripheral hardware power is connected through the cable to the main power input end of electric telescopic handle controller (7), one side of electric telescopic handle controller (7) is provided with host computer (34), a signal access end of host computer (34) passes through the information line and connects electric telescopic handle controller (7), the opposite side of handling case (1) is provided with industrial computer (35), the information access end of host computer (34) passes through the information connection end of transmission line connection industrial computer (35).
4. The ultraviolet exposure apparatus for the outer layer circuit of the printed circuit board according to claim 1, characterized in that: the other side that just is located electric telescopic handle driver (7) in handling case (1) is provided with first driver (16), the controlled end of first step motor (8) is connected through the cable to the output control end of first driver (16), the information incoming end of host computer (34) is connected through the information line to the signal input part of first driver (16).
5. The ultraviolet exposure apparatus for the outer layer circuit of the printed circuit board according to claim 1, characterized in that: be provided with first encoder subassembly (15) in exposure storehouse (2), first encoder subassembly (15) are provided with first mount including setting up in exposure storehouse (2) and being close to the position that bears dish (9), be provided with first encoder on the first mount, the moving axis of first encoder is worn out first mount and is provided with first driven wheel, first driven wheel outer fringe all is equipped with first drive line with the outer fringe that bears dish (9), first drive line meshing from the driving wheel bears the first drive line of dish (9), be provided with programmable controller (23) in processing case (1), the output line connection programmable controller (23) signal incoming end of first encoder, and the program incoming end of programmable controller (23) passes through the information output end of transmission line connection host computer (34).
6. The ultraviolet exposure apparatus for the outer layer circuit of the printed circuit board according to claim 1, characterized in that: the light shielding pipe (18) is arranged on the fixed disc (17), the light shielding pipe (18) is arranged in the rotary frame (10), the supporting plate (20), the track machine (21) and the CDD exposure machine (22) are located in the light shielding pipe (18), an opening (19) is formed in the lower side of the light shielding pipe (18), a power line and a control line of the track machine (21) penetrate out of a front port of the rotary frame (10), wherein the power line of the track machine (21) is connected with an external power supply, and the control line of the track machine (21) is connected with a signal access end of the host (34).
7. The ultraviolet exposure apparatus for the outer layer circuit of the printed circuit board according to claim 1, characterized in that: the driving mechanism comprises a supporting pipe (24) arranged on one side in the exposure bin (2), one end of a baffle plate (25) is inserted into the supporting pipe (24), track grooves (26) are formed in the front and rear positions of the inner wall of the supporting pipe (24), track wheels (27) are arranged in the front and rear positions of one end, inserted into the supporting pipe (24), of the baffle plate (25), rollers of the track wheels (27) are inserted into the track grooves (26), a vertical rod (28) is arranged at the inner bottom of the exposure bin (2), a mounting frame (29) is arranged at the top of the vertical rod (28), the mounting frame (29) is sleeved with the baffle plate (25), the mounting frame (29) is a U-shaped plate, a power component (31) is arranged at the top of the mounting frame (29), the power component (31) comprises a second stepping motor arranged on the mounting frame (29), and a driving wheel is arranged at the position of a rotor shaft of the second stepping motor, the outer fringe of action wheel and the upper end of baffle (25) all are equipped with second drive line, the second drive line on the second drive line meshing baffle (25) of action wheel, the one side position that just is located first driver (16) in handling case (1) is provided with second driver (33), the controlled end of second step motor passes through the defeated accuse end of cable connection second driver (33), the information incoming end of information line connection host computer (34) is passed through to the signal input part of second driver (33).
8. The ultraviolet exposure apparatus for the outer layer circuit of the printed circuit board as set forth in claim 7, wherein: the bottom of mounting bracket (29) is provided with second encoder subassembly (31), second encoder subassembly (31) are including setting up the second mount in mounting bracket (29) bottom, be provided with the second encoder on the second mount, the moving axis of second encoder is worn out the second mount and is provided with the second and follows the driving wheel, the second is all equipped with the third drive line from the lower extreme of driving wheel outer fringe and baffle (25), the second drives the third drive line of line meshing baffle (25) from the driving wheel, the signal incoming end of programmable controller (23) is connected to the output of second encoder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210237011.6A CN114302567B (en) | 2022-03-11 | 2022-03-11 | Ultraviolet exposure device for outer layer circuit of printed circuit board |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210237011.6A CN114302567B (en) | 2022-03-11 | 2022-03-11 | Ultraviolet exposure device for outer layer circuit of printed circuit board |
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| CN114302567A CN114302567A (en) | 2022-04-08 |
| CN114302567B true CN114302567B (en) | 2022-06-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210237011.6A Active CN114302567B (en) | 2022-03-11 | 2022-03-11 | Ultraviolet exposure device for outer layer circuit of printed circuit board |
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| CN (1) | CN114302567B (en) |
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|---|---|---|---|---|
| JPS59188652A (en) * | 1983-02-28 | 1984-10-26 | タマラツク・サイエンテイフイツク・カンパニ−・インコ−ポレ−テツド | Automatic system for exposing and processing double side printed circuit panel |
| EP0109634B1 (en) * | 1982-11-22 | 1987-01-07 | Hoechst Aktiengesellschaft | Exposure device |
| US4791458A (en) * | 1986-11-13 | 1988-12-13 | Masi Amerigo De | Multi-purpose apparatus for the imaging of printed wired boards |
| US4894679A (en) * | 1988-06-03 | 1990-01-16 | Graphics Lx Corp. | Method and apparatus for use in transferring an image |
| JP2005196063A (en) * | 2004-01-09 | 2005-07-21 | Fuji Photo Film Co Ltd | Exposure system |
| EP2110709A1 (en) * | 2008-04-14 | 2009-10-21 | Matthias Nagel | Lithography exposure device |
| CN207965471U (en) * | 2018-01-24 | 2018-10-12 | 吉安市满坤科技有限公司 | A kind of printed circuit board preparation exposure machine |
| CN210136390U (en) * | 2018-12-24 | 2020-03-10 | 深圳市兆方智能科技有限公司 | Automatic feeding and discharging machine of exposure machine and exposure system |
| CN215181402U (en) * | 2021-06-24 | 2021-12-14 | 深圳市三字自动化设备有限公司 | CCD line automatic exposure machine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002351086A (en) * | 2001-03-22 | 2002-12-04 | Fuji Photo Film Co Ltd | Exposure device |
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2022
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Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0109634B1 (en) * | 1982-11-22 | 1987-01-07 | Hoechst Aktiengesellschaft | Exposure device |
| JPS59188652A (en) * | 1983-02-28 | 1984-10-26 | タマラツク・サイエンテイフイツク・カンパニ−・インコ−ポレ−テツド | Automatic system for exposing and processing double side printed circuit panel |
| US4791458A (en) * | 1986-11-13 | 1988-12-13 | Masi Amerigo De | Multi-purpose apparatus for the imaging of printed wired boards |
| US4894679A (en) * | 1988-06-03 | 1990-01-16 | Graphics Lx Corp. | Method and apparatus for use in transferring an image |
| JP2005196063A (en) * | 2004-01-09 | 2005-07-21 | Fuji Photo Film Co Ltd | Exposure system |
| EP2110709A1 (en) * | 2008-04-14 | 2009-10-21 | Matthias Nagel | Lithography exposure device |
| CN207965471U (en) * | 2018-01-24 | 2018-10-12 | 吉安市满坤科技有限公司 | A kind of printed circuit board preparation exposure machine |
| CN210136390U (en) * | 2018-12-24 | 2020-03-10 | 深圳市兆方智能科技有限公司 | Automatic feeding and discharging machine of exposure machine and exposure system |
| CN215181402U (en) * | 2021-06-24 | 2021-12-14 | 深圳市三字自动化设备有限公司 | CCD line automatic exposure machine |
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| Publication number | Publication date |
|---|---|
| CN114302567A (en) | 2022-04-08 |
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