CN115751892A - Device and method for efficiently recycling residual gold precipitation liquid on surface of printed circuit board - Google Patents
Device and method for efficiently recycling residual gold precipitation liquid on surface of printed circuit board Download PDFInfo
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- CN115751892A CN115751892A CN202211280532.6A CN202211280532A CN115751892A CN 115751892 A CN115751892 A CN 115751892A CN 202211280532 A CN202211280532 A CN 202211280532A CN 115751892 A CN115751892 A CN 115751892A
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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
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Abstract
The invention discloses a device and a method for efficiently recovering residual gold immersion liquid on the surface of a printed circuit board, and relates to the technical field of recovering residual gold immersion liquid on the printed circuit board, the device comprises lifting oil cylinders fixedly arranged on the left and right outer side walls of a recovery tank, lifting plates fixedly arranged on the extending ends of the lifting oil cylinders, prepressing oil cylinders and guide posts fixedly arranged on the two lifting plates, movable plates slidably sleeved on the two guide posts, springs, one ends of which are fixedly arranged on the lifting plates, the other ends of which are fixedly arranged on the bottom surfaces of the movable plates, and pressing blocks fixedly arranged on the action ends of piston rods of the two prepressing oil cylinders; the welding has the rack on the effect end of horizontal cylinder piston rod, and the right side that just is located horizontal cylinder in the diaphragm has seted up a plurality of logical grooves, leads to the length direction setting along the diaphragm, and every leads to the inslot and all installs a gear through the pivot rotation. The invention has the beneficial effects that: compact structure, recovery heavy golden liquid more thoroughly, greatly improve heavy golden liquid recovery efficiency, save the recovery cost.
Description
Technical Field
The invention relates to the technical field of recovering residual gold-precipitating liquid on a printed circuit board, in particular to a device and a method for efficiently recovering residual gold-precipitating liquid on the surface of the printed circuit board.
Background
Electronic component assemblies, which are core components of a controller and can play an important role, include single-sided circuit boards, double-sided circuit boards, HDI boards, multilayer printed circuit boards, and the like.
The two large end faces of the printed circuit board are welded with a plurality of array welding pads, the process requires that a layer of gold is plated on the outer surfaces of the welding pads, and the specific chemical gold plating method comprises the following steps: the workman hangs the edge hole on the printed circuit board on the couple of stores pylon earlier, then transfers the stores pylon to make the couple whereabouts, and then make the printed circuit board immerse in the heavy golden liquid of storage tank, after soaking a period, can chemically plate out the one deck gold layer on the surface of each pad, then the workman promotes the stores pylon, so that the printed circuit board lifts up, promotes the back, and the workman takes away printed circuit board from the couple, thereby finally realized printed circuit board's chemical gold plating.
Wherein, when taking away the back with printed circuit board from the couple, because be attached to a large amount of heavy golden liquid of remaining on two big terminal surfaces of printed circuit board, consequently the workman still will lift printed circuit board directly over the storage tank, and the printed circuit board of whipping again afterwards, under the whipping, will be attached to the heavy golden liquid of remaining on two big terminal surfaces of printed circuit board and throw into the storage tank in, and then reached the purpose of retrieving the heavy golden liquid of remaining, saved the gilding cost.
However, although the gold deposition solution can be recovered by swinging the printed circuit board in the workshop, i.e. the gold deposition solution on the two large end faces of the printed circuit board after gold plating is thrown into the storage tank, the workshop technicians often raise the following problems:
I. in the swinging process, the immersion gold liquid between the contact part of the hands of workers and the printed circuit board is not exposed, so that the immersion gold liquid cannot be completely thrown into the storage tank at all, and the technical defect of incomplete recovery of the immersion gold liquid is caused.
II. The swinging of the printed circuit board in a single direction by workers needs to consume a long time to swing the residual gold precipitating solution on the two large end surfaces, which undoubtedly greatly reduces the recovery efficiency of the gold precipitating solution.
III, in the whole recovery process, a large number of workers are required to be arranged around the storage tank for operation, which undoubtedly increases the labor cost for recovering the gold precipitation liquid. Therefore, a device and a method for recovering the gold precipitating solution more thoroughly, greatly improving the recovery efficiency of the gold precipitating solution and saving the recovery cost are needed.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a device and a method for efficiently recovering residual gold-precipitating liquid on the surface of a printed circuit board, which have the advantages of compact structure, more thorough recovery of the gold-precipitating liquid, greatly improved recovery efficiency of the gold-precipitating liquid and saved recovery cost.
The purpose of the invention is realized by the following technical scheme: a device for efficiently recovering residual immersion gold liquid on the surface of a printed circuit board comprises lifting oil cylinders fixedly arranged on the left and right outer side walls of a recovery tank, piston rods of the two lifting oil cylinders extend upwards above the recovery tank, lifting plates are fixedly arranged on the extending ends of the two lifting oil cylinders, prepressing oil cylinders and guide posts are fixedly arranged on the two lifting plates, movable plates are slidably sleeved on the two guide posts, springs are sleeved on the two guide posts, one end of each spring is fixedly arranged on the lifting plate, the other end of each spring is fixedly arranged on the bottom surface of the movable plate, pressing blocks are fixedly arranged on the action ends of the piston rods of the two prepressing oil cylinders, and the two pressing blocks are respectively arranged right above the two movable plates;
the inboard end of two fly leafs all welds the connecting plate that is located its below, the diaphragm has set firmly between two connecting plates, the horizontal hydro-cylinder has set firmly on the top surface of diaphragm, the welding has the rack on the effect end of horizontal hydro-cylinder piston rod, a plurality of logical grooves have been seted up on the right side that just is located horizontal hydro-cylinder in the diaphragm, logical groove sets up along the length direction of diaphragm, every logical inslot all installs a gear through the pivot rotation, every gear all with rack toothing, all weld an extension board on the preceding terminal surface of every gear, a vacuum tube has all been welded to the bottom of every extension board, the bottom of every vacuum tube all is provided with the opening, every vacuum tube all with vacuum pump connection.
The movable plate is internally provided with a through hole matched with the guide post, and the through hole of the movable plate is in sliding fit with the guide post.
And a polish rod is welded on the inner end face of the connecting plate on the right side, a guide sleeve is welded on the top surface of the right end part of the rack, and the guide sleeve is in sliding fit with the polish rod.
The top of the vacuum tube is sealed, the sealed end is welded to the bottom of the support plate, and a rubber ring is fixedly arranged at an opening at the bottom of the vacuum tube.
And a joint communicated with the right end part of each vacuum tube is arranged at the right end part of each vacuum tube.
The bottom surface of the transverse plate is welded with a plurality of L-shaped plates corresponding to the vacuum tubes, a vacuum pump is fixedly arranged on the horizontal plate of each L-shaped plate, and the working port of each vacuum pump is connected with the joint of the corresponding vacuum tube through a hose.
The bottom of the recovery tank is provided with a plurality of supporting legs supported on the ground, and the side wall of the recovery tank is provided with a liquid discharge valve.
The device also comprises a controller, wherein the controller is electrically connected with the electromagnetic valve of the lifting oil cylinder, the electromagnetic valve of the pre-pressing oil cylinder and the electromagnetic valve of the horizontal oil cylinder through signal wires.
A method for efficiently recovering residual gold precipitating liquid on the surface of a printed circuit board comprises the following steps:
s1, feeding of a printed circuit board, which comprises the following specific operation steps:
s11, a worker takes a printed circuit board subjected to gold deposition treatment, then the small end face of the printed circuit board abuts against a rubber ring of a vacuum tube, then the worker opens a vacuum pump corresponding to the vacuum tube, the vacuum pump vacuumizes a hose, a connector and the vacuum tube, and the printed circuit board is fixed at the bottom of the vacuum tube in an adsorption mode under negative pressure, so that feeding of the printed circuit board is achieved;
s12, repeating the operation of the step S11, namely fixing the rest printed circuit boards on a vacuum tube respectively, thereby realizing the feeding of the printed circuit boards;
s2, a worker controls piston rods of the two lifting oil cylinders to retract simultaneously, the piston rods drive the lifting plate to move downwards, the lifting plate drives the pre-pressing oil cylinders, the guide columns and the movable plate to move downwards synchronously, and further drives the connecting plate, the transverse plate, the vacuum tube and the adsorbed printed circuit board to move downwards synchronously, and after the piston rods of the two lifting oil cylinders retract completely, each printed circuit board is located in the recovery tank;
s3, jumping up and down of the printed circuit board, wherein the specific operation steps are as follows:
s31, workers control piston rods of the two pre-pressing oil cylinders to retract downwards, the piston rods drive a pressing block to move downwards, the pressing block presses a movable plate below the pressing block downwards in the downward movement process, the movable plate moves downwards along a guide column, and a spring is compressed downwards;
s32, after the piston rod of the pre-pressing oil cylinder is completely retracted, a worker controls the piston rod of the pre-pressing oil cylinder to rapidly extend upwards so as to rapidly separate the pressing block from the movable plate, after separation, the movable plate makes reciprocating up-and-down jumping along the guide post under the action of restoring force of a spring, the movable plate drives the transverse plate to make reciprocating up-and-down jumping, and further drives the printed circuit board to make reciprocating up-and-down jumping, the printed circuit board accelerates shaking of residual gold immersion liquid attached to two large end surfaces of the printed circuit board in the jumping process, and the shaken-down gold immersion liquid is collected in a recovery tank;
s33, after the spring stops moving, continuously controlling the piston rod of the pre-pressing oil cylinder to retract downwards so as to further enable the spring to be continuously compressed, and after the spring is compressed, controlling the piston rod of the pre-pressing oil cylinder to extend upwards quickly again so as to ensure that each printed circuit board is bounced up and down all the time;
s4, the printed circuit board swings left and right in a reciprocating mode: a worker controls a piston rod of a horizontal oil cylinder to do reciprocating telescopic motion, the piston rod drives a rack to do reciprocating left-right motion, the rack drives each gear to do reciprocating left-right rotating motion within an included angle range, the gear drives a support plate and a vacuum tube to do reciprocating left-right rotating motion, the vacuum tube drives a printed circuit board to do reciprocating left-right rotating motion, the printed circuit board quickens throwing of residual gold immersion liquid attached to two large end surfaces of the printed circuit board in the reciprocating left-right rotating process, and the thrown gold immersion liquid is collected in a recovery tank;
s5, collecting residual gold precipitating liquid attached to the two large end faces of the printed circuit board into a recovery tank after a period of time;
s6, taking down the printed circuit board: the method comprises the steps that a worker firstly closes two prepressing oil cylinders, then controls a horizontal oil cylinder to be closed, then controls piston rods of two lifting oil cylinders to simultaneously extend upwards, the piston rods drive a lifting plate to move upwards, the lifting plate drives the prepressing oil cylinders, guide posts and a connecting plate to synchronously move upwards, and further drives a transverse plate and a printed circuit board to move upwards, after the piston rods of the lifting oil cylinders completely extend out, the worker holds one printed circuit board by hand, then controls a vacuum pump corresponding to the printed circuit board to be closed, at the moment, the printed circuit board can be taken away from vacuum tubes, and the operation is repeated, and the worker can take the rest printed circuit boards off the vacuum tubes;
and S7, repeating the operations of the steps S1 to S6, and continuously recovering the residual gold immersion liquid on the two large end surfaces of the printed circuit board into the recovery tank in multiple batches.
The invention has the following advantages: compact structure, recovery heavy golden liquid more thoroughly, greatly improve heavy golden liquid recovery efficiency, save the recovery cost.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of a portion I of FIG. 1;
FIG. 3 is a schematic view of the connection between the transverse plate and the gear;
FIG. 4 is a top view of FIG. 3;
FIG. 5 is a schematic view of the connection of the vacuum tube to the gear;
FIG. 6 is a left side view of FIG. 5;
FIG. 7 is a schematic structural diagram of the movable plate;
FIG. 8 is a top view of FIG. 7;
FIG. 9 is a schematic view of a briquette;
FIG. 10 is a schematic illustration of printed circuit board loading;
FIG. 11 is a schematic view of the printed circuit board entering the reclamation tank;
FIG. 12 is a schematic view of the press block pressing the movable plate downward;
FIG. 13 is a schematic view of the separation of the pressing block from the movable plate;
FIG. 14 is a schematic view of the PCB performing reciprocating left and right rotational movement;
in the figure, 1-a recovery tank, 2-a lifting oil cylinder, 3-a lifting plate, 4-a pre-pressing oil cylinder, 5-a guide column, 6-a movable plate, 7-a spring, 8-a pressing block, 9-a connecting plate, 10-a transverse plate, 11-a horizontal oil cylinder, 12-a rack, 13-a through groove, 14-a rotating shaft, 15-a gear, 16-a supporting plate, 17-a vacuum pipe, 18-a vacuum pump, 19-a through hole, 20-a polished rod, 21-a guide sleeve, 22-a joint, 23-a hose and 24-a printed circuit board.
Detailed Description
The invention will be further described with reference to the accompanying drawings, without limiting the scope of the invention to the following:
as shown in fig. 1 to 9, a device for efficiently recovering a residual gold immersion liquid on a surface of a printed circuit board includes lifting cylinders 2 fixedly arranged on left and right outer side walls of a recovery tank 1, a plurality of support legs supported on the ground are arranged at the bottom of the recovery tank 1, a liquid discharge valve is arranged on a side wall of the recovery tank 1, piston rods of the two lifting cylinders 2 extend upwards above the recovery tank 1, lifting plates 3 are fixedly arranged on extension ends, pre-pressing cylinders 4 and guide posts 5 are fixedly arranged on the two lifting plates 3, movable plates 6 are slidably sleeved on the two guide posts 5, springs 7 are sleeved on the two guide posts 5, one ends of the springs 7 are fixedly arranged on the lifting plates 3, the other ends of the springs are fixedly arranged on the bottom surfaces of the movable plates 6, pressing blocks 8 are fixedly arranged on action ends of the piston rods of the two pre-pressing cylinders 4, and the two pressing blocks 8 are respectively arranged right above the two movable plates 6;
the inner side ends of the two movable plates 6 are welded with connecting plates 9 located below the two movable plates, transverse plates 10 are fixedly arranged between the two connecting plates 9, horizontal oil cylinders 11 are fixedly arranged on the top surfaces of the transverse plates 10, racks 12 are welded on action ends of piston rods of the horizontal oil cylinders 11, a plurality of through grooves 13 are formed in the transverse plates 10 and located on the right sides of the horizontal oil cylinders 11, the through grooves 13 are arranged along the length direction of the transverse plates 10, gears 15 are rotatably mounted in the through grooves 13 through rotating shafts 14, each gear 15 is meshed with the racks 12, an extension plate 16 is welded on the front end face of each gear 15, a vacuum tube 17 is welded at the bottom of each extension plate 16, an opening is formed in the bottom of each vacuum tube 17, and each vacuum tube 17 is connected with a vacuum pump 18. A polish rod 20 is welded on the inner end face of the connecting plate 9 on the right side, a guide sleeve 21 is welded on the top surface of the right end portion of the rack 12, the guide sleeve 21 is in sliding fit with the polish rod 20, a through hole 19 matched with the guide column 5 is formed in the movable plate 6, and the through hole 19 of the movable plate 6 is in sliding fit with the guide column 5.
The top of the vacuum tube 17 is closed, the closed end is welded to the bottom of the support plate 16, a rubber ring is fixedly arranged at an opening at the bottom of the vacuum tube 17, and a connector 22 communicated with the vacuum tube 17 is arranged at the right end of each vacuum tube 17. A plurality of L-shaped plates corresponding to the vacuum pipes 17 are welded on the bottom surface of the transverse plate 10, a vacuum pump 18 is fixedly arranged on each horizontal plate of the L-shaped plates, and a working port of each vacuum pump 18 is connected with a joint 22 of the corresponding vacuum pipe 17 through a hose 23.
The device still includes the controller, the solenoid valve of controller and lift cylinder 2, pre-compaction hydro-cylinder 4, horizontal hydro-cylinder 11's solenoid valve are connected through the signal line electricity, and workman's accessible controller control lift cylinder 2, pre-compaction hydro-cylinder 4 and the stretching out or the withdrawal of horizontal hydro-cylinder 11 piston rod, very big convenience workman's operation, have the characteristics that degree of automation is high.
A method for efficiently recovering residual gold precipitation liquid on the surface of a printed circuit board comprises the following steps:
s1, feeding a printed circuit board, wherein the specific operation steps are as follows:
s11, a worker takes a printed circuit board 24 after gold deposition treatment, then the small end face of the printed circuit board 24 abuts against a rubber ring of a vacuum tube 17, then the worker opens a vacuum pump 18 corresponding to the vacuum tube 17, the vacuum pump 18 vacuumizes a hose 23, a connector 22 and the vacuum tube 17, and the printed circuit board 24 is fixed at the bottom of the vacuum tube 17 in an adsorption manner under negative pressure, so that feeding of the printed circuit board 24 is realized;
s12, repeating the operation of the step S11, namely fixing the rest printed circuit boards 24 on one vacuum tube 17 respectively, thereby realizing the feeding of the printed circuit boards 24, as shown in FIG. 10;
in the feeding process of the step S1, the small end face of the printed circuit board 24 is adsorbed on the bottom port of the vacuum tube 17, so that the two large end faces of the printed circuit board 24 are all exposed outside, and in the subsequent step S3-S4, the gold immersion liquid recovery process ensures that the residual gold immersion liquid on the two large end faces of the printed circuit board 24 can be completely recovered into the recovery tank 1.
S2, a worker controls piston rods of the two lifting cylinders 2 to retract simultaneously, the piston rods drive the lifting plates 3 to move downwards, the lifting plates 3 drive the pre-pressing cylinders 4, the guide columns 5 and the movable plates 6 to synchronously move downwards, further drive the connecting plate 9, the transverse plate 10, the vacuum tubes 17 and the adsorbed printed circuit boards 24 to synchronously move downwards, and after the piston rods of the two lifting cylinders 2 retract completely, each printed circuit board 24 is positioned in the recovery tank 1 as shown in FIG. 11;
s3, jumping up and down of the printed circuit board, wherein the specific operation steps are as follows:
s31, a worker controls piston rods of the two pre-pressing oil cylinders 4 to retract downwards, the piston rods drive the pressing blocks 8 to move downwards, the pressing blocks 8 press the movable plate 6 below the pressing blocks downwards in the downward movement process, and as shown in fig. 12, the movable plate 6 moves downwards along the guide column 5 and compresses the spring 7 downwards;
s32, after the piston rod of the pre-pressing oil cylinder 4 is completely retracted, a worker controls the piston rod of the pre-pressing oil cylinder 4 to rapidly extend upwards so as to rapidly separate the pressing block 8 from the movable plate 6, as shown in FIG. 13, after separation, the movable plate 6 makes reciprocating up-and-down jumping along the guide post 5 under the action of restoring force of the spring 7, the jumping direction of the movable plate 6 is shown by a hollow arrow of FIG. 13, the movable plate 6 also drives the transverse plate 10 to make reciprocating up-and-down jumping, and further drives the printed circuit board 24 to make reciprocating up-and-down jumping, and the printed circuit board 24 accelerates shaking of residual gold immersion liquid attached to two large end surfaces of the printed circuit board in the jumping process, and the shaken gold immersion liquid is collected in the recovery tank 1;
s33, after the spring 7 stops moving, continuously controlling the piston rod of the pre-pressing oil cylinder 4 to retract downwards so as to further continuously compress the spring 7, and after compression, again controlling the piston rod of the pre-pressing oil cylinder 4 to rapidly extend upwards so as to ensure that each printed circuit board 24 is always bounced up and down;
s4, the printed circuit board swings left and right in a reciprocating mode: a worker controls a piston rod of the horizontal oil cylinder 11 to do reciprocating telescopic motion, the piston rod drives the rack 12 to do reciprocating left-right motion, the rack 12 drives the gears 15 to do reciprocating left-right rotating motion within an included angle range, the gears 15 drive the support plate 16 and the vacuum tube 17 to do reciprocating left-right rotating motion, the vacuum tube 17 drives the printed circuit board 24 to do reciprocating left-right rotating motion, as shown in fig. 14, the rotating direction of the printed circuit board 24 is shown by solid arrows in fig. 14, during the reciprocating left-right rotating process of the printed circuit board 24, throwing of residual gold immersion liquid attached to two large end surfaces of the printed circuit board is accelerated, and the thrown gold immersion liquid is collected in the recovery tank 1;
in the process of recovering the gold precipitating solution in the steps S3-S4, the device presses the movable plate 6 downwards through the pressing block 8 of the pre-pressing oil cylinder 4, the movable plate 6 compresses the spring 7, then the pressing block 8 is reset quickly, the purpose of shaking off the gold precipitating solution is achieved, then through the reciprocating motion of the piston rod of the horizontal oil cylinder 11, the driving gear 15 performs reciprocating left-right rotating motion, the purpose of shaking off the printed circuit board 24 is achieved, therefore, under the reciprocating motion and the left-right rotating motion, the falling time of the gold precipitating solution remained on two end faces of the printed circuit board 24 is greatly accelerated, compared with the situation that the printed circuit board is manually swung in a single direction in a workshop, and the recovery efficiency of the gold precipitating solution is greatly improved.
S5, collecting residual gold precipitation liquid attached to the two large end surfaces of the printed circuit board 24 into the recovery tank 1 after a period of time;
s6, taking down the printed circuit board 24: the method comprises the following steps that a worker firstly closes two pre-pressing oil cylinders 4, then controls a horizontal oil cylinder 11 to be closed, then controls piston rods of two lifting oil cylinders 2 to simultaneously extend upwards, the piston rods drive a lifting plate 3 to move upwards, the lifting plate 3 drives the pre-pressing oil cylinders 4, a guide post 5 and a connecting plate 9 to synchronously move upwards, and further drives a transverse plate 10 and a printed circuit board 24 to move upwards, after the piston rods of the lifting oil cylinders 2 completely extend, the worker holds one printed circuit board 24 by hand, then controls a vacuum pump 18 corresponding to the printed circuit board 24 to close, and can take the printed circuit board 24 away from vacuum tubes 17 at the moment, and the operation is repeated, so that the worker can take the rest printed circuit boards 24 away from the vacuum tubes 17;
and S7, repeating the operations of the steps S1 to S6, and continuously recovering the residual gold immersion liquid on the two large end surfaces of the printed circuit board 24 into the recovery tank 1 in multiple batches. Wherein, the gold precipitation liquid recovered in the recovery tank 1 can be filled into the storage tank again to realize the recycling of the gold precipitation liquid and save the gold plating cost. In addition, in the whole process of recovering the gold precipitating liquid, the gold precipitating liquid can be recovered on the batch printed circuit boards only by manually feeding and discharging and controlling the action of each execution part, and a large amount of workers do not need to be invested for operation, so that the labor cost is greatly saved.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The utility model provides a device that printed circuit board surface residue sinks golden liquid is retrieved to high efficiency which characterized in that: the recovery tank comprises lifting oil cylinders (2) fixedly arranged on the left outer side wall and the right outer side wall of a recovery tank (1), piston rods of the two lifting oil cylinders (2) extend upwards above the recovery tank (1), lifting plates (3) are fixedly arranged on the extending ends, prepressing oil cylinders (4) and guide columns (5) are fixedly arranged on the two lifting plates (3), movable plates (6) are slidably sleeved on the two guide columns (5), springs (7) are sleeved on the two guide columns (5), one ends of the springs (7) are fixedly arranged on the lifting plates (3), the other ends of the springs are fixedly arranged on the bottom surfaces of the movable plates (6), pressing blocks (8) are fixedly arranged on the acting ends of the piston rods of the two prepressing oil cylinders (4), and the two pressing blocks (8) are respectively arranged right above the two movable plates (6);
the inner side ends of two movable plates (6) are welded with connecting plates (9) located below the movable plates, a transverse plate (10) is fixedly arranged between the two connecting plates (9), a horizontal oil cylinder (11) is fixedly arranged on the top surface of the transverse plate (10), a rack (12) is welded on the action end of a piston rod of the horizontal oil cylinder (11), a plurality of through grooves (13) are formed in the transverse plate (10) and located on the right side of the horizontal oil cylinder (11), the through grooves (13) are arranged along the length direction of the transverse plate (10), a gear (15) is rotatably installed in each through groove (13) through a rotating shaft (14), each gear (15) is meshed with the rack (12), a support plate (16) is welded on the front end face of each gear (15), a vacuum tube (17) is welded at the bottom of each support plate (16), an opening is formed in the bottom of each vacuum tube (17), and each vacuum tube (17) is connected with a vacuum pump (18).
2. The device for efficiently recycling residual gold precipitating solution on the surface of the printed circuit board according to claim 1, characterized in that: a through hole (19) matched with the guide post (5) is formed in the movable plate (6), and the through hole (19) of the movable plate (6) is in sliding fit with the guide post (5).
3. The device for efficiently recycling the residual gold precipitating solution on the surface of the printed circuit board according to claim 1, characterized in that: the inner end face of the connecting plate (9) on the right side is welded with a polished rod (20), the top surface of the right end portion of the rack (12) is welded with a guide sleeve (21), and the guide sleeve (21) is in sliding fit with the polished rod (20).
4. The device for efficiently recycling residual gold precipitating solution on the surface of the printed circuit board according to claim 1, characterized in that: the top of the vacuum tube (17) is closed, the closed end is welded to the bottom of the support plate (16), and a rubber ring is fixedly arranged at an opening at the bottom of the vacuum tube (17).
5. The device for efficiently recycling residual gold precipitating solution on the surface of the printed circuit board according to claim 1, characterized in that: the right end of each vacuum tube (17) is provided with a joint (22) communicated with the vacuum tube.
6. The device for efficiently recycling residual gold precipitating solution on the surface of the printed circuit board according to claim 1, characterized in that: a plurality of L-shaped plates corresponding to the vacuum pipes (17) are welded on the bottom surface of the transverse plate (10), a vacuum pump (18) is fixedly arranged on each horizontal plate of each L-shaped plate, and a working port of each vacuum pump (18) is connected with a joint (22) of the corresponding vacuum pipe (17) through a hose (23).
7. The device for efficiently recycling residual gold precipitating solution on the surface of the printed circuit board according to claim 1, characterized in that: the bottom of the recovery tank (1) is provided with a plurality of supporting legs supported on the ground, and the side wall of the recovery tank (1) is provided with a liquid discharge valve.
8. The device for efficiently recycling the residual gold precipitating solution on the surface of the printed circuit board according to claim 1, characterized in that: the device also comprises a controller, wherein the controller is electrically connected with the electromagnetic valve of the lifting oil cylinder (2), the electromagnetic valve of the pre-pressing oil cylinder (4) and the electromagnetic valve of the horizontal oil cylinder (11) through signal wires.
9. A method for efficiently recovering residual gold-precipitating solution on the surface of a printed circuit board adopts the device for efficiently recovering the residual gold-precipitating solution on the surface of the printed circuit board as defined in any one of claims 1 to 8, and is characterized in that: it comprises the following steps:
s1, feeding of a printed circuit board, which comprises the following specific operation steps:
s11, a worker takes a printed circuit board (24) which is subjected to gold deposition treatment, then the small end face of the printed circuit board (24) is abutted against a rubber ring of a vacuum tube (17), then the worker opens a vacuum pump (18) corresponding to the vacuum tube (17), the vacuum pump (18) vacuumizes a hose (23), a connector (22) and the vacuum tube (17), and the printed circuit board (24) is fixed at the bottom of the vacuum tube (17) in an adsorption manner under negative pressure, so that the loading of the printed circuit board (24) is realized;
s12, repeating the operation of the step S11, namely fixing the rest printed circuit boards (24) on a vacuum tube (17) respectively, thereby realizing the feeding of the printed circuit boards (24);
s2, a worker controls piston rods of the two lifting oil cylinders (2) to retract simultaneously, the piston rods drive the lifting plates (3) to move downwards, the lifting plates (3) drive the pre-pressing oil cylinders (4), the guide columns (5) and the movable plates (6) to move downwards synchronously, further drive the connecting plates (9), the transverse plates (10), the vacuum tubes (17) and the adsorbed printed circuit boards (24) to move downwards synchronously, and after the piston rods of the two lifting oil cylinders (2) retract completely, each printed circuit board (24) is located in the recovery tank (1);
s3, jumping up and down of the printed circuit board, wherein the specific operation steps are as follows:
s31, a worker controls piston rods of the two pre-pressing oil cylinders (4) to retract downwards, the piston rods drive the pressing block (8) to move downwards, the pressing block (8) presses the movable plate (6) below the pressing block downwards in the downward movement process, the movable plate (6) moves downwards along the guide column (5), and the spring (7) is compressed downwards;
s32, after the piston rod of the pre-pressing oil cylinder (4) is completely retracted, a worker controls the piston rod of the pre-pressing oil cylinder (4) to rapidly extend upwards so as to enable the pressing block (8) and the movable plate (6) to be rapidly separated, after separation, the movable plate (6) makes reciprocating up-and-down jumping along the guide post (5) under the action of restoring force of the spring (7), the movable plate (6) drives the transverse plate (10) to make reciprocating up-and-down jumping, and further drives the printed circuit board (24) to make reciprocating up-and-down jumping, the printed circuit board (24) accelerates the shaking of residual gold immersion liquid attached to two large end surfaces of the printed circuit board in the jumping process, and the shaken-down gold immersion liquid is collected in the recovery tank (1);
s33, when the spring (7) stops moving, the piston rod of the pre-pressing oil cylinder (4) is continuously controlled to retract downwards, so that the spring (7) is continuously compressed, and after compression, the piston rod of the pre-pressing oil cylinder (4) is controlled to rapidly extend upwards again, so that the printed circuit boards (24) are ensured to jump up and down all the time;
s4, the printed circuit board swings left and right in a reciprocating mode: a worker controls a piston rod of a horizontal oil cylinder (11) to do reciprocating telescopic motion, the piston rod drives a rack (12) to do reciprocating left-right motion, the rack (12) drives gears (15) to do reciprocating left-right rotating motion within an included angle range, the gears (15) drive a support plate (16) and a vacuum tube (17) to do reciprocating left-right rotating motion, the vacuum tube (17) drives a printed circuit board (24) to do reciprocating left-right rotating motion, the printed circuit board (24) accelerates throwing of residual gold immersion liquid attached to two large end surfaces of the printed circuit board in the reciprocating left-right rotating process, and the thrown gold immersion liquid is collected in a recovery tank (1);
s5, collecting residual gold precipitation liquid attached to two large end faces of the printed circuit board (24) into the recovery tank (1) after a period of time;
s6, taking down the printed circuit board (24): the method comprises the steps that a worker firstly closes two pre-pressing oil cylinders (4), then controls a horizontal oil cylinder (11) to be closed, then controls piston rods of two lifting oil cylinders (2) to simultaneously extend upwards, the piston rods drive a lifting plate (3) to move upwards, the lifting plate (3) drives the pre-pressing oil cylinders (4), a guide post (5) and a connecting plate (9) to synchronously move upwards, further drives a transverse plate (10) and a printed circuit board (24) to move upwards, after the piston rods of the lifting oil cylinders (2) completely extend out, the worker holds one printed circuit board (24) with hands, then controls a vacuum pump (18) corresponding to the printed circuit board (24) to be closed, at the moment, the printed circuit board (24) can be taken away from a vacuum tube (17), and the operation is repeated, and the worker can take the rest printed circuit boards (24) off from the vacuum tubes (17);
and S7, repeating the operations of the steps S1 to S6, and continuously recovering the residual gold immersion liquid on the two large end surfaces of the printed circuit board (24) into the recovery tank (1) in multiple batches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211280532.6A CN115751892B (en) | 2022-10-19 | 2022-10-19 | Device and method for efficiently recycling residual gold precipitation liquid on surface of printed circuit board |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211280532.6A CN115751892B (en) | 2022-10-19 | 2022-10-19 | Device and method for efficiently recycling residual gold precipitation liquid on surface of printed circuit board |
Publications (2)
| Publication Number | Publication Date |
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| CN115751892A true CN115751892A (en) | 2023-03-07 |
| CN115751892B CN115751892B (en) | 2023-06-02 |
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| CN202211280532.6A Active CN115751892B (en) | 2022-10-19 | 2022-10-19 | Device and method for efficiently recycling residual gold precipitation liquid on surface of printed circuit board |
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| Publication number | Publication date |
|---|---|
| CN115751892B (en) | 2023-06-02 |
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