CN114231983B

CN114231983B - Pattern etching equipment for flexible PCB

Info

Publication number: CN114231983B
Application number: CN202210165335.3A
Authority: CN
Inventors: 杨和斌; 金功成; 李强; 华允均
Original assignee: Jiangyou Xinglian Electronic Technology Co ltd
Current assignee: Jiangyou Xinglian Electronic Technology Co ltd
Priority date: 2022-02-23
Filing date: 2022-02-23
Publication date: 2022-06-28
Anticipated expiration: 2042-02-23
Also published as: CN114231983A

Abstract

The invention discloses a pattern etching device of a flexible PCB (printed circuit board), which comprises a control box, wherein the top of the control box is provided with a working box, the upper position and the lower position in the working box are respectively provided with a liquid through pipe, the liquid through pipes are respectively provided with an atomizing head, one end of each liquid through pipe penetrates out of the working box and is connected with a liquid inlet pipe, the liquid through pipe is communicated with the liquid inlet pipe, one end of the liquid through pipe is connected with a pressurization injection device capable of pressurizing and injecting etching liquid medicine into the liquid through pipe, the working box is provided with a stepping motor, and a rotor shaft of the stepping motor penetrates into the working box and is connected with a supporting disc. Step motor's rotor shaft rotates according to certain rotational speed and turn to drive flexible PCB board and rotate, and rotate the in-process at flexible PCB board, flexible PCB board bending face also changes its angle that corresponds the atomising head thereupon, when rotatory repeatedly, and the effectual sculpture effect of guarantee can effectively cover each position of flexible PCB board to atomizing spun sculpture liquid medicine from top to bottom, need not the multidirectional centre gripping many times.

Description

Pattern etching equipment for flexible PCB

Technical Field

The invention belongs to the technical field of flexible PCB manufacturing, and particularly relates to a graph etching device of a flexible PCB.

Background

Flexible PCB board circuit pattern usually adopts etching equipment to make, after its anterior ultraviolet exposure, can leave one deck dry film circuit pattern on the PCB board, and this kind of figure is exactly the circuit pattern, because the dry film is insoluble in the etching liquid medicine, consequently spray the etching liquid medicine back on flexible PCB board through etching equipment, dry film circuit pattern protection is by the copper layer of its cover, and the copper layer that does not have the dry film cover takes place redox reaction with the etching liquid medicine, thereby remove useless copper layer, leave complete circuit pattern on flexible PCB board.

At present, the etching equipment of sculpture flexible PCB board circuit figure, the setting of two spouting about generally adopting, to flexible PCB board spraying sculpture liquid medicine, and flexible PCB board adopts the fixed centre gripping of fixture, the spraying in-process, can let the sculpture liquid medicine cover flexible PCB top and bottom, this kind of etching equipment is better to individual layer flexible PCB board and the flexible PCB board sculpture effect of multilayer, however to the flexible PCB board that has the circuit face of bending, owing to adopt fixed centre gripping, the sculpture liquid medicine that the spraying was come out is difficult to effectively cover flexible PCB board face of bending, consequently need multidirectional centre gripping many times, it is inconvenient to use.

Disclosure of Invention

The invention aims to provide a pattern etching device of a flexible PCB (printed circuit board) so as to solve the problems in the prior art.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a figure etching equipment of flexible PCB board, includes the control box, the top of control box is provided with the work box, the position is provided with logical liquid pipe respectively about in the work box, it all is provided with the atomising head on the liquid pipe to lead to, the one end that leads to the liquid pipe is worn out the work box and is connected with feed liquor pipe and leads to liquid pipe intercommunication feed liquor pipe, the one end that leads to the liquid pipe is connected with the pressurization injection device that can pour into the sculpture liquid medicine into to leading to intraductal pressurization of liquid, be provided with step motor on the work box, step motor's rotor shaft runs through to the work box in and is connected with the supporting disk, the both sides of supporting disk all are provided with glide machanism, the last symmetry of glide machanism is provided with the elastic plate, all be connected with the clamp splice on the elastic plate.

Preferably, the one end that is connected with the bracing piece and bracing piece on the liquid pipe is connected on the work box, one side of work box is equipped with the poling hole, and the liquid pipe runs through and is provided with waterproof filler in the poling hole gap.

Preferably, pressurization injection device is including connecting the chemical industry solenoid valve in the one end of feed liquor pipe, the feed liquor end of chemical industry solenoid valve is connected with the water service pipe, the play liquid end at the diaphragm pump is connected to the one end of water service pipe, the feed liquor end of diaphragm pump is connected with connecting pipe and inserts in the sculpture liquid medicine section of thick bamboo.

Preferably, the lower part of one side of the working box is connected with a liquid discharge pipe, the working box is communicated with the liquid discharge pipe, and one end of the liquid discharge pipe is connected with a guide hose.

Preferably, the both sides that glide machanism includes the supporting disk are connected with the support column, the support column is square post, be provided with the slide on the support column, be equipped with internal orifice and support column penetrating internal orifice in the slide, it has the screw to lock on the support column, the elastic plate sets up on the slide.

Preferably, the clamping blocks are all provided with soft plates, the soft plates are provided with protrusions, and the clamping blocks are internally provided with slots and the protrusions are inserted into the slots.

Preferably, a connecting plate is arranged on the supporting plate, sliding rods are inserted into two sides of the connecting plate, a top plate is connected to the tops of the sliding rods, the bottoms of the sliding rods are connected to the clamping blocks, and supporting bolts are connected to the top plate in a threaded mode.

Preferably, be provided with electric telescopic handle on the work box, electric telescopic handle's ejector pin end connection has the fishplate bar, the one end of fishplate bar is provided with the traction plate, connect fixedly through the brace rod between fishplate bar and the traction plate, the bilateral symmetry of traction plate is provided with the baffle, the baffle is the arc, the symmetry is equipped with the diaphragm orifice and the baffle inserts in the work box and embolias glide machanism and the last connection structure of glide machanism through the diaphragm orifice on the work box.

Preferably, an industrial personal computer is arranged on the control box, a stepping motor driver is arranged on one side in the control box, a main power line of the stepping motor driver is connected with an external power supply, a control transmission end of the stepping motor driver is connected with a controlled end of the stepping motor through a cable, a signal input end of the stepping motor driver is connected with a signal access end of the industrial personal computer through a transmission line, a programmable controller is arranged on the other side in the control box, the main power line of the programmable controller is connected with the external power supply, a power access end of the diaphragm pump is connected with a main power supply wiring lower pile of the direct current contactor through a cable, a main power supply wiring upper pile of the direct current contactor is connected with the external power supply through a cable, a normally open contact wiring end of the direct current contactor is connected with a control wiring end of the programmable controller through a cable, and the other control wiring end of the programmable controller is connected with a controlled end of the chemical electromagnetic valve through a cable, and the information access end of the programmable controller is connected with the other information access end of the industrial personal computer through a transmission line.

Compared with the prior art, the invention has the beneficial effects that:

according to the invention, under the rebound action of the upper elastic plate, the clamping blocks are tightly pressed on the sides of the flexible PCB, the distance between the clamping blocks on the left side and the right side can be adjusted according to the length of the flexible PCB, and the rotor shaft of the stepping motor rotates according to a certain rotating speed and a certain rotating direction, so that the flexible PCB is driven to rotate;

according to the invention, the baffles are arranged, so that the floating amount of the atomized etching liquid medicine in the left-right direction can be reduced in the process of spraying the etching liquid medicine, and the instantaneous storage amount of the atomized etching liquid medicine between the baffles is increased, so that the atomized etching liquid medicine can cover the flexible PCB more easily and effectively.

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 an enlarged view of a portion a of FIG. 2;

fig. 4 is a schematic top view of fig. 1.

In the figure: the device comprises a control box 1, a working box 2, a liquid passing pipe 3, a supporting rod 4, a liquid inlet pipe 5, a chemical electromagnetic valve 6, a water passing pipe 7, a diaphragm pump 8, a connecting pipe 9, a liquid discharging pipe 10, a guide hose 11, a stepping motor 12, a supporting disk 13, a supporting column 14, a sliding plate 15, an inner opening 16, an elastic plate 17, a clamping block 18, a soft plate 19, a bulge 20, a slot 21, a screw 22, a connecting plate 23, a sliding rod 24, a top plate 25, a supporting bolt 26, an electric telescopic rod 27, a connecting plate 28, a traction plate 29, a supporting rib 30, a baffle 31, an industrial personal computer 32, a stepping motor driver 33, a programmable controller 34 and an atomizing head 101.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.

FIG. 1, FIG. 2 and FIG. 4, a graphic etching apparatus for flexible PCB board, comprising a control box 1, a working box 2 fixed on the top of the control box 1 by bolts, the lower end of the working box 2 is downward inclined at 30 degrees, liquid passing tubes 3 are respectively installed at the upper and lower positions in the working box 2, three atomization heads 101 are horizontally and uniformly screwed on the liquid passing tubes 3, a support rod 4 is welded at the left end of the liquid passing tube 3, the left end of the support rod 4 is welded on the working box 2, the liquid passing tube 3 is stably fixed in the working box 2 by the connection support of the support rod 4, a through-tube hole is arranged at the right side of the working box 2, a waterproof filler is filled in the through-tube hole gap of the liquid passing tube 3, the waterproof filler is plastic-steel mud, when the plastic-steel mud is solidified, the liquid passing tube 3 can be stabilized in the through-tube hole, a liquid hole is arranged at the left side of the liquid passing tube 5 by seamless welding at the right end of the liquid passing tube 3, a pressurizing injection device comprises an electromagnetic valve 6 screwed at the upper end of the liquid feeding tube 5, the model of the chemical electromagnetic valve 6 is ZCF-15UPVC, a water pipe 7 is screwed at the liquid inlet end of the chemical electromagnetic valve 6, the lower end flange of the water pipe 7 is connected with the liquid outlet end of a diaphragm pump 8, the liquid inlet end flange of the diaphragm pump 8 is connected with a connecting pipe 9, the connecting pipe 9 is inserted into an etching liquid medicine barrel, the model of the diaphragm pump 8 is MP-15R, when the diaphragm pump 8 operates, the etching liquid medicine in the etching liquid medicine barrel can be sucked into the water pipe 7, when the chemical electromagnetic valve 6 is electrified to open a valve core, the etching liquid medicine is pressurized and discharged into a liquid inlet pipe 5, and is atomized and sprayed out through an atomizing head 101 on a liquid through pipe 3, the lower part of the right side of a working box 2 is connected with a liquid discharge pipe 10, the working box 2 is communicated with the liquid discharge pipe 10, the working box 2 and the liquid discharge pipe 10 are integrated, a guide hose 11 is sleeved at the right end of the liquid discharge pipe 10 and is hooped tightly, the guide hose 11 is inserted into an etching liquid recovery tank, the etching liquid waste liquid discharged along the lower slope of the work box 2 is discharged into the etching liquid recovery tank through the guide hose 11.

Referring to fig. 2 and 3, a stepping motor 12 is fixed to a rear portion of a work box 2 by a bolt, the model of the stepping motor 12 is 57HBP56AL4-TFA8B, a rotor shaft of the stepping motor 12 penetrates through a shaft hole formed in the rear portion of the work box 2 and is in key connection with a support plate 13, the support plate 13 is of a disc structure, sliding mechanisms are arranged on the left side and the right side of the front portion of the support plate 13 and comprise support columns 14 connected to two sides of the support plate 13, the support plate 13 and the support columns 14 are integrated, the support columns 14 are square columns, an inner opening 16 is formed in a sliding plate 15, the support columns 14 are slidably inserted into the inner opening 16, screws 22 are locked in screw holes formed in the support columns 14, when the screws 22 are locked, the heads of the screws 22 press the sliding plate 15 to limit the sliding plate 15 to move transversely, the sliding plate 15 cannot rotate on the support columns 14, the elastic plates 17 are welded to the sliding plate 15 in a vertically symmetrical mode, the elastic plates 17 are made of tungsten-vanadium alloy, the flexible PCB has good bending recovery capability, the elastic force of the flexible PCB is set to meet the requirement that the upper clamping block 18 and the lower clamping block 18 can compress the flexible PCB, the clamping blocks 18 are welded on the elastic plates 17, the soft plates 19 are arranged on the clamping blocks 18, the soft plates 19 are made of natural silica gel, bulges 20 are uniformly arranged on the soft plates 19 in the front and at the back, the bulges 20 are of cylindrical structures with wide outer parts and narrow inner parts, the sides of the flexible circuit board can be flexibly protected when the sides of the flexible circuit board are compressed by the upper clamping block 18 and the lower clamping block 18 through the arrangement of the soft plates 19, slots 21 are uniformly arranged in the clamping blocks 18 in the front and at the back, the slots 21 are circular grooves with wide outer parts and narrow inner parts, the bulges 20 are inserted into the slots 21 to stabilize the positions of the soft plates 19 on the clamping blocks 18, the connecting plate 23 is arranged in front of the supporting plate 13, the supporting plate 13 and the connecting plate 23 are integrated, the sliding rods 24 are slidably inserted into the sliding holes arranged on the left side and the right side of the connecting plate 23, the top of the sliding rods 24 are welded with top plates 25, the bottom of the sliding rod 24 is welded at the upper end of the clamping block 18, the top plate 25 is screwed with a supporting bolt 26, when the supporting bolt 26 is screwed downwards, the top plate 25 can be lifted upwards, so that the clamping block 18 on the upper side is pulled, the upper clamping block 18 and the lower clamping block 18 are opened, and the side of the flexible circuit board can be conveniently inserted between the clamping blocks 18.

Referring to fig. 1, 2 and 4, an electric telescopic rod 27 is fixed on the front of a working box 2 through bolts, the model of the electric telescopic rod 27 is XTL, the electric telescopic rod 27 is provided with a telescopic control switch, a wiring end of the telescopic control switch is connected with a power adapter through a cable, a plug of the power adapter is connected with an external power supply, the maximum length of a mandril of the electric telescopic rod 27 extends out to meet the requirement that a baffle 31 does not block a detachable flexible circuit board, the end part of the mandril of the electric telescopic rod 27 is connected with a connecting plate 28 through a flange, a traction plate 29 is arranged at the right end of the connecting plate 28, the connecting plate 28 and the traction plate 29 are integrated, the left end and the right end of a front welding support rib 30 of the connecting plate 28 and the traction plate 29 are stabilized, the joint of the connecting plate 28 and the traction plate 29 cannot deform, the baffles 31 are symmetrically welded at the left side and the right side of the back of the traction plate 29, and the baffles 31 are arc-shaped plates, the symmetry is equipped with the diaphragm orifice on work box 2, and the diaphragm orifice is the arc hole, and baffle 31 slip insert diaphragm orifice to work box 2 in and embolia glide machanism and glide machanism go up connection structure, and the setting of baffle 31 can reduce atomizing sculpture liquid medicine to controlling the direction volume of floating, also increases the instantaneous volume of remaining of atomizing sculpture liquid medicine between baffle 31 at the spraying sculpture liquid medicine in-process to make atomizing sculpture liquid medicine change effectively to cover flexible PCB board.

Referring to fig. 1, 2 and 4, an industrial personal computer 32 is fixed on the upper left side of a control box 1, the model of the industrial personal computer 32 is ZPC104-D112, a stepping motor driver 33 is fixed on a screw on the left side in the control box 1, the model of the stepping motor driver 33 is 2.3n.mdm542, a main power line of the stepping motor driver 33 is connected with an external power supply, a control and transmission end of the stepping motor driver 33 is connected with a controlled end of a stepping motor 12 through a cable, a signal input end of the stepping motor driver 33 is connected with a signal access end of the industrial personal computer 32 through a transmission line, the industrial personal computer 32 and the stepping motor driver 33 achieve a signal communication protocol, the industrial personal computer 32 can be provided with the rotating speed and the rotating direction of the stepping motor 12 in the running period, a programmable controller 34 is fixed on a screw on the right side in the control box 1, the main power line of the programmable controller 34 is connected with the external power supply, a power supply access end of a diaphragm pump 8 is connected with a lower pile of a main power supply connector of a direct current contactor through a cable, direct current contactor's main power source wiring is piled up and is passed through the cable and connect the peripheral hardware power, direct current contactor's normally open contact wiring end passes through a control wiring end of cable connection programmable controller 34, the controlled end of chemical industry solenoid valve 6 is connected through the cable to another control wiring end of programmable controller 34, another information access end of programmable controller 34 passes through another information access end of transmission line connection industrial computer 32, accessible industrial computer 32 types programmable controller 34 control chemical

industry solenoid valve

6 and 8 on-time of diaphragm pump, can set for 3 seconds after 6 when getting electricity of chemical industry solenoid valve, switch-on direct current contactor contact power, 8 operations of diaphragm pump.

The working principle of the embodiment is as follows: before the flexible PCB mounting device is used, a mandril of an electric telescopic rod 27 extends out by controlling a telescopic control switch, a baffle plate 31 does not block the dismounting and mounting of a flexible circuit board, a support bolt 26 is screwed downwards to lift a top plate 25, thereby drawing a clamping block 18 at the upper side to open the upper and lower clamping blocks 18, inserting the side of the flexible circuit board between the clamping blocks 18, then screwing the support bolt 26 out of the top plate 25, under the resilience action of an upper elastic plate 17, the clamping block 18 is pressed on the side of the flexible PCB, through the arrangement of a flexible plate 19, when the side of the flexible PCB is pressed by the upper and lower clamping blocks 18, the side of the flexible PCB can be flexibly protected, before the flexible PCB is mounted, the distance between the clamping blocks 18 at the left side and the right side can be adjusted according to the length of the flexible PCB, when the adjustment is carried out, a screw 22 is firstly screwed, the position of a sliding plate 15 is oppositely moved until the clamping blocks 18 at the two sides can be clamped on the side of the flexible PCB, the locking screw 22 and the sliding plate 15 are pressed by the head of the sliding plate, stabilizing the transverse position of the sliding plate 15, controlling the telescopic control switch to retract the mandril of the electric telescopic rod 27, leading the baffle 31 to be sleeved into the sliding mechanism and the connecting structure on the sliding mechanism, leading the baffle 31 not to block the dismounting flexible circuit board to control the step motor driver 33 to lead the rotor shaft of the step motor 12 to rotate according to a certain rotating speed and steering direction through the industrial personal computer 32, thereby driving the flexible PCB to rotate, controlling the programmable controller 34 to be sequentially connected with the power supply of the chemical electromagnetic valve 6 and the diaphragm pump 8 through the industrial personal computer 32, sucking the etching liquid medicine in the etching liquid medicine cylinder into the water pipe 7 when the diaphragm pump 8 operates, leading the etching liquid medicine to be pressurized and discharged into the liquid inlet pipe 5 after the chemical electromagnetic valve 6 is electrified and the valve core is opened, finally atomizing and spraying through the atomizing heads 101 on the water pipe 3 at the upper and lower positions, and changing the angle of the bending surface of the flexible PCB corresponding to the atomizing heads along with the flexible PCB in the rotating process, when the flexible PCB rotates repeatedly, the etching liquid medicine sprayed out in an up-and-down atomization mode can effectively cover all positions of the flexible PCB, the effective etching effect is guaranteed, and multi-time multi-directional clamping is not needed;

The setting of baffle 31, at the spraying sculpture liquid medicine in-process, can reduce atomizing sculpture liquid medicine and float the volume to the left right direction, also increase the instantaneous volume of remaining of atomizing sculpture liquid medicine between baffle 31 to make atomizing sculpture liquid medicine change effectively and cover flexible PCB board.

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

1. The utility model provides a figure etching equipment of flexible PCB board which characterized in that: comprises a control box (1), the top of the control box (1) is provided with a work box (2), the upper and lower positions in the work box (2) are respectively provided with a liquid passing pipe (3), the liquid passing pipe (3) is provided with an atomizing head (101), one end of the liquid passing pipe (3) penetrates out of the work box (2) and is connected with a liquid inlet pipe (5) and a liquid passing pipe (3) communicated with the liquid inlet pipe (5), one end of the liquid passing pipe (3) is connected with a pressurizing and injecting device which can inject etching liquid medicine into the liquid passing pipe (3) in a pressurizing way, the work box (2) is provided with a stepping motor (12), a rotor shaft of the stepping motor (12) penetrates into the work box (2) and is connected with a support plate (13), both sides of the support plate (13) are provided with sliding mechanisms, elastic plates (17) are symmetrically arranged on the sliding mechanisms, the elastic plates (17) are connected with clamp blocks (18), the sliding mechanism comprises supporting discs (13), supporting columns (14) are connected to two sides of each supporting column (14), a sliding plate (15) is arranged on each supporting column (14), an inner opening (16) and a supporting column (14) penetrating into the inner opening (16) are arranged in each sliding plate (15), screws (22) are locked on the supporting columns (14), elastic plates (17) are arranged on the sliding plates (15), connecting plates (23) are arranged on the supporting discs (13), sliding rods (24) are inserted into two sides of each connecting plate (23), top plates (25) are connected to the tops of the sliding rods (24), the bottoms of the sliding rods (24) are connected to clamping blocks (18), supporting bolts (26) are connected to the top plates (25) in a threaded mode, electric telescopic rods (27) are arranged on the work box (2), and the end portions of ejector rods of the electric telescopic rods (27) are connected with connecting plates (28), one end of the connecting plate (28) is provided with a traction plate (29), the connecting plate (28) and the traction plate (29) are supported and fixed through support ribs (30), baffle plates (31) are symmetrically arranged on two sides of the traction plate (29), the baffle plates (31) are arc-shaped plates, plate holes and the baffle plates (31) are symmetrically arranged on the work box (2) and are inserted into the work box (2) through the plate holes, and the work box is sleeved with a sliding mechanism and a connecting structure on the sliding mechanism.

2. The pattern etching apparatus of a flexible PCB as recited in claim 1, wherein: the one end that is connected with bracing piece (4) and bracing piece (4) on logical liquid pipe (3) is connected on work box (2), one side of work box (2) is equipped with the poling hole, and it is provided with waterproof filler in the poling hole gap to lead to liquid pipe (3).

3. The apparatus for pattern etching of a flexible PCB as recited in claim 1, wherein: pressurization injection device is including connecting chemical industry solenoid valve (6) in the one end of feed liquor pipe (5), the feed liquor end of chemical industry solenoid valve (6) is connected with water service pipe (7), the play liquid end in diaphragm pump (8) is connected to the one end of water service pipe (7), the feed liquor end of diaphragm pump (8) is connected with connecting pipe (9) and inserts in the sculpture liquid medicine section of thick bamboo.

4. The apparatus for pattern etching of a flexible PCB as recited in claim 1, wherein: the liquid discharging device is characterized in that a liquid discharging pipe (10) is connected to the lower portion of one side of the working box (2), the working box (2) is communicated with the liquid discharging pipe (10), and one end of the liquid discharging pipe (10) is connected with a guide hose (11).

5. The apparatus for pattern etching of a flexible PCB as recited in claim 1, wherein: the clamp block (18) is provided with soft plates (19), the soft plates (19) are provided with protrusions (20), the clamp block (18) is internally provided with slots (21), and the protrusions (20) are inserted into the slots (21).

6. The pattern etching apparatus for the flexible PCB as recited in claim 3, wherein: the control box (1) is provided with an industrial personal computer (32), one side in the control box (1) is provided with a stepping motor driver (33), a main power line of the stepping motor driver (33) is connected with an external power supply, a control transmission end of the stepping motor driver (33) is connected with a controlled end of a stepping motor (12) through a cable, a signal input end of the stepping motor driver (33) is connected with a signal access end of the industrial personal computer (32) through a transmission line, the other side in the control box (1) is provided with a programmable controller (34), a main power line of the programmable controller (34) is connected with the external power supply, a power supply access end of the diaphragm pump (8) is connected with a lower pile of a main power supply wiring of the direct current contactor through a cable, an upper pile of a main power supply wiring of the direct current contactor is connected with the external power supply through a cable, a normally open contact terminal of the direct current contactor is connected with a control terminal of the programmable controller (34) through a cable, and the other control wiring end of the programmable controller (34) is connected with a controlled end of the chemical solenoid valve (6) through a cable, and the information access end of the programmable controller (34) is connected with the other information access end of the industrial personal computer (32) through a transmission line.