CN109056014B

CN109056014B - Electroplating brush device

Info

Publication number: CN109056014B
Application number: CN201811021462.6A
Authority: CN
Inventors: 陈欣洁
Original assignee: Shandong Junce Technology Service Co Ltd
Current assignee: CHONGQING JINGYU ELECTRONIC TECHNOLOGY Co.,Ltd.
Priority date: 2018-09-03
Filing date: 2018-09-03
Publication date: 2020-12-22
Anticipated expiration: 2038-09-03
Also published as: CN109056014A

Abstract

The invention belongs to the technical field of surface electroplating, in particular to an electroplating brush device, which comprises a brushing groove, a workpiece fixing device, a brushing device, a driving device, a brushing liquid conveying device and an infrared distance measuring sensor, wherein the workpiece fixing device, the brushing device, the driving device, the brushing liquid conveying device and the infrared distance measuring sensor are automatically controlled by a controller; the cam is arranged in the center hole of the friction wheel, the extrusion plate is arranged in the sliding groove of the friction wheel in a sliding mode, the two air bags are symmetrically arranged on the left side and the right side below the friction wheel, the lower ends of the air bags are communicated through a second one-way valve water spraying disc, and the water spraying disc is fixedly connected to the middle of the hair bundle, so that electroplating solution is uniformly sprayed to the upper end of the hair bundle, and the uniformity of a coating on the surface of a workpiece is further guaranteed; when the friction wheel drives the extrusion plate to rotate to the upper half part of the cam, the extrusion plate contracts into the friction wheel under the action of the elastic force of the spring, and the contact between the friction wheel and the surface of a workpiece is not influenced.

Description

Electroplating brush device

Technical Field

The invention belongs to the technical field of surface electroplating, and particularly relates to an electroplating brush device.

Background

The brush plating technology is a special form of electroplating technology, mainly uses the principle of electrochemical deposition to quickly deposit a metal coating on the selected position of the surface of a conductive workpiece. The size and geometric precision of the workpiece can be repaired, the surface of the workpiece is strengthened, the service life is prolonged, and the like, and the brush plating technology is widely applied to the maintenance and the remanufacture of mechanical equipment.

In the prior art, a workpiece is mainly connected with a negative electrode of a power supply to be used as a cathode; the plating pen is connected with the positive electrode of the power supply to be used as an anode; the brush bundles of the plating pen are soaked with the coating liquid, and when the plating is carried out, the workpiece and the brush bundles of the plating pen move relatively to each other to finish the plating. The hair bundles on the anode of the plating pen can not cover all workpieces and can not automatically extend or shorten; therefore, the brush plating of the curved surface can not be completed, and the defects of uneven brush plating on the workpiece and the like are easily caused.

Some technical schemes of the electric brush plating device also appear in the prior art, for example, a chinese patent with application number 2017103142756 discloses an electric brush plating device, which comprises a brushing groove, a workpiece fixing device, a brushing device, a driving device, a brushing liquid conveying device and an infrared distance measuring sensor, wherein a first liquid discharging port is arranged at the bottom of the brushing groove, and the first liquid discharging port is connected with a brushing liquid storage box through a hose; the workpiece fixing device is positioned above the painting groove and used for fixing the workpiece; the brushing device is arranged on the driving device and is used for brushing the workpiece; the driving device is used for driving the brushing device to brush and electroplate the workpiece back and forth; the brushing liquid conveying device is used for conveying brushing liquid to the brushing device; the infrared ranging sensor is used for detecting the thickness of a coating of a workpiece.

According to the technical scheme, the surface brush plating treatment of the curved surface workpiece can be realized, but the hair bundle connected to the anode of the plating pen in the device cannot be bent according to the bending degree of the curved surface on the workpiece, so that the uniformity of the plated layer after brush plating of the hair bundle is influenced, and the quality of the workpiece is influenced; and in the scheme, the electroplating solution cannot be uniformly sprayed at the upper ends of the hair bundles, and the uniformity of the coating on the surface of the workpiece can be influenced.

Disclosure of Invention

In order to make up for the defects of the prior art, the electroplating brush device provided by the invention automatically controls the workpiece fixing device, the painting device, the driving device, the painting liquid conveying device and the infrared distance measuring sensor through the controller, and an experimenter only needs to put a workpiece into the workpiece fixing device and then set specific parameter values, so that the workpiece can be automatically subjected to electroplating, the manual participation is less, the labor intensity of the experimenter is reduced on one hand, the manual interference is avoided on the other hand, the quality of a coating is ensured, and the uniformity of the thickness of the coating is ensured at the same time.

The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to an electroplating brush device, which comprises a brushing groove, a workpiece fixing device, a brushing device, a driving device, a brushing liquid conveying device and an infrared distance measuring sensor, wherein the workpiece fixing device is arranged on the workpiece fixing device; the brushing groove is of a hollow cuboid structure with an opening at the top, and preferably, the bottom of the brushing groove is obliquely arranged, so that the brushing liquid in the brushing groove can be discharged in time, and the purpose of cyclic utilization of the brushing liquid can be realized. The first liquid outlet is arranged at the bottom of the painting groove and is connected with the painting liquid conveying device through a hose, so that the painting liquid in the painting groove can be discharged to the painting liquid conveying device through the first liquid outlet in time, and the aim of recycling the painting liquid can be fulfilled; the brushing groove is provided with a workpiece fixing device, a brushing device, a driving device and a controller for automatic operation of a brushing liquid conveying device; the workpiece fixing device is positioned above the brushing groove and used for fixing the workpiece; the brushing device is arranged on the driving device and is used for brushing a workpiece; the driving device is used for driving the brushing device to brush and electroplate the workpiece back and forth; the brushing liquid conveying device is used for conveying brushing liquid to the brushing device; the infrared ranging sensor is arranged at the bottom of the coating groove and used for detecting the thickness of a workpiece coating.

The driving device comprises two guide rods, a lead screw, a sliding block and a servo motor, the two guide rods and the lead screw are transversely arranged in the brushing groove, the sliding block is arranged on the guide rods and the lead screw, and the brushing device is fixedly connected with the sliding block; the servo motor is connected with the controller and used for driving the screw rod to rotate.

The brushing liquid conveying device comprises a liquid supply pump and a brushing liquid storage box; the brushing liquid storage box is connected with the liquid supply pump through a hose. And the liquid supply pump conveys the brushing liquid from the brushing liquid storage box to the brushing device, and the brushing liquid flows back into the brushing liquid storage box through a pipeline by the brushing device in the electroplating process to recycle the brushing liquid.

Preferably, the workpiece fixing device comprises a support frame, a pushing unit and a blowing unit; the pushing unit is arranged above the painting groove through a support frame, the air blowing unit is arranged at the bottom of the painting groove, and the pushing unit and the air blowing unit are matched with each other to fix the workpiece; the pushing unit comprises a telescopic rod, a top plate and a silica gel pad, the telescopic rod is fixedly connected with the support frame, the top plate is connected with the telescopic rod through a bolt, the silica gel pad is fixed on the lower surface of the top plate and is in direct contact with a workpiece, the silica gel pad can limit the workpiece on one hand, and the workpiece can be prevented from being scratched on the other hand. The air blowing unit comprises a fan, a pipe seat, an air outlet pipe and an electric push rod, and the fan is arranged outside the brushing groove; the pipe seats are uniformly and symmetrically arranged at the bottom of the brushing groove; the air outlet pipes are arranged at the tops of the pipe seats and can swing relative to the pipe seats, each air outlet pipe is connected with the fan through a pipeline, the air outlet pipes are in a vertical state when working, when the air outlet pipes rotate, the air outlet pipes stop blowing air, when the brushing device brushes and plates a workpiece, the air outlet pipes at corresponding positions can rotate around the pipe seats under the action of external force given by the brushing device, and at the moment, the air outlet pipes stop blowing air, so that the influence of wind power on the workpiece brushing and brushing work is reduced; after the external force given to the air outlet pipe by the brushing device disappears, the air outlet pipe can restore to the vertical state to continuously blow air to fix the workpiece; the electric push rods are four in number, are arranged in the brushing grooves in a rectangular mode, are used for temporarily supporting the workpiece when the workpiece is placed in and taken out, are provided with pressure sensors, are used for measuring the weight of the workpiece, and are fixed by blowing out wind with different strengths from the air outlet pipe according to different weights of the workpiece, so that the wind power is reduced on the basis that the workpiece is fixed, and the energy consumption is reduced. When the device works, an experimenter places a workpiece on the top of the lifted electric push rod, the electric push rod temporarily supports the workpiece, the pressure sensor measures the weight of the workpiece and transmits the result to the controller, and the sensor calculates the minimum wind power required by fixing the workpiece according to the weight of the workpiece; simultaneously, the telescopic link stretches out downwards, when the work piece was touched to the silica gel pad, pressure sensor detected the pressure increase, telescopic link stop motion this moment, then fan work, go out tuber pipe and blow out and push up the work piece, the work piece extrudeed the silica gel pad this moment, and the silica gel pad takes place to warp, and the silica gel pad of deformation fixes a position the work piece, then apply paint the device with a brush alright carry out the electroplate brush work to the work piece. After the brush plating is finished, the telescopic rod extends upwards and contacts the workpiece, then the fan stops working, the telescopic rod retracts upwards, and then an experimenter can take out the workpiece. In the working process of fixing the workpiece by the blowing unit, the air blown out from the air outlet pipe not only can fix the workpiece, but also can air-dry the surface of the workpiece, so that the drying process of the workpiece is shortened.

Preferably, the brushing device comprises a collecting tank and a brushing unit; the coating liquid storage box is characterized in that the collecting groove is arranged on the sliding block, a second liquid discharge port is formed in the bottom of the collecting groove and connected with the coating liquid storage box through a hose, and the coating liquid flows back into the coating liquid storage box through the second liquid discharge port, so that the cyclic utilization of the coating liquid is realized; the number of the brushing units is multiple, the brushing units are arranged in the collecting tank side by side, and each brushing unit comprises a micro telescopic rod, a plating pen anode and a hair bundle; the micro telescopic rod is fixedly connected to the bottom of the collecting tank, the plating pen anode is arranged at the top of the micro telescopic rod, and hair bundles are arranged on the plating pen anode; the plating pen anode is connected with the liquid supply pump through a hose, and the liquid supply pump can convey the brushing liquid in the brushing liquid storage tank to the plating pen anode for brush plating the workpiece; install pressure sensor and insulating pad between miniature telescopic link and the pen positive pole of plating, pressure sensor is used for detecting the pressure of hair bundle to the work piece, when carrying out the brush plating to the curved surface of work piece, guarantees through the flexible regulation of miniature telescopic link that the pressure of hair bundle to the work piece is unchangeable to realize the homogeneity of work piece curved surface brush plating. When the device works, the micro telescopic rod extends upwards, when the pressure value detected by the pressure sensor reaches a preset pressure value, the telescopic rod stops moving, then the coating liquid flows out from the hair bundle, then the anode of the plating pen and the workpiece are electrified to form a loop, and then the driving device works to drive the coating device to do left-right reciprocating motion. In the process, the hair bundles can move up and down along with the curved surface of the workpiece under the action of the miniature telescopic rod, and meanwhile, the pressure of the hair bundles on the workpiece is kept unchanged, so that the uniformity of the electroplating brush for the curved surface of the workpiece is ensured.

Preferably, the plating pen anode comprises a base, a support column, a mounting plate, a liquid storage box, a protection straight pipe, an adjusting module, a support vertical plate, a transverse support block, a cam, a friction wheel, an extrusion plate, an air bag, a first check valve, a second check valve and a water spray disc, wherein the base is fixedly connected to the top of the micro telescopic rod, a pressure sensor and an insulating pad are arranged between the base and the micro telescopic rod, and the upper end surface of the base is fixedly connected with the lower end of the liquid storage box; the liquid storage tank is connected with the liquid supply pump through a hose; the lower end of the protection straight pipe penetrates through a top plate of the liquid storage box, and the upper end of the protection straight pipe penetrates through the mounting plate; the mounting plate is fixedly connected with the base through a group of supporting columns, the upper end face of the mounting plate is fixedly connected with the lower ends of the two supporting vertical plates, and the left side and the right side above the mounting plate are symmetrically provided with adjusting modules; the adjusting module is provided with a hair bundle; the upper end of the supporting vertical plate is provided with a friction wheel; the friction wheel is rotatably connected between the two supporting vertical plates through a rotating shaft, and a cam is arranged in a central hole of the friction wheel; two ends of the cam are fixedly connected between the two supporting vertical plates; two sliding grooves are formed in the inner wall of a central hole of each friction wheel, the sliding grooves in the two friction wheels are arranged on the same straight line, extrusion plates are arranged in the sliding grooves of the friction wheels in a sliding mode, and two air bags are symmetrically arranged on the left side and the right side below the friction wheels; the lower end arc surface of the air bag is fixedly connected to the upper surface of the transverse supporting block; the transverse supporting block is fixedly connected between the two supporting vertical plates; the lower part of the air bag is connected with a one-way valve I through an air pipe; the lower end of the first check valve extends into the liquid storage tank through an air pipe; the lower end of the air bag is connected with a second one-way valve through an air pipe; the second one-way valve is communicated with the water spray disc through an air pipe; the water spraying discs are fixedly connected to the middle of the wool bundles, a group of water spraying holes are formed in the upper surfaces of the water spraying discs, and every two adjacent water spraying discs are connected through a hose. When the electroplating brush works, the friction wheel is in contact with the lower surface of a workpiece, the anode of the electroplating pen moves along the horizontal direction, the friction wheel is driven to roll, the friction wheel rotates relative to the cam, when the friction wheel drives the extrusion plate to rotate to the lower half part of the cam, the cam ejects the extrusion plate on the friction wheel, the friction wheel drives the extrusion plate to extrude the air bag below the extrusion plate, electroplating solution in the air bag is extruded into an air pipe, and the electroplating solution passes through a second one-way valve and a water spray disc in the middle of a hair bundle, so that the electroplating solution is uniformly sprayed on the upper end of the hair bundle, and the uniformity of the surface coating of the workpiece is further ensured; when the friction wheel drives the stripper plate and rotates the first half of cam, the stripper plate contracts in the friction wheel under the effect of spring force, and then can not influence the contact of friction wheel with workpiece surface, and the gasbag kick-backs under the effect of spring force for form the negative pressure in the gasbag, and then with holding in the plating solution of liquid incasement inhale the gasbag through trachea and check valve, the plating solution in the gasbag supplies the liquid for the hair bundle next time and uses.

Preferably, two swing plates are symmetrically arranged at two ends of the air bag; the section of the swing plate is wedge-shaped, and the large end of the swing plate is hinged to one end of the air bag through a hinge seat; the small end of the swing plate is fixedly connected with a sucker on the surface of one side close to the air bag; a pulley is arranged below the swinging plate; the pulley is fixedly connected to the hinge seat of the swinging plate through the supporting seat; the swing plates on the two sides of the air bag are connected through a first steel wire rope; the first steel wire rope is sequentially connected with a side face, back to the air bag, of the swinging plate on the right side of the air bag, the pulley on the left side of the air bag and the swinging plate on the left side of the air bag from left to right. When the device works, the friction wheel drives the extrusion plate to extrude the swing plate firstly, the swing plate drives the sucker at the upper end to swing, the swing plate extrudes the air bag, so that electroplating liquid in the air bag is supplied to the upper end of the hair bundle, meanwhile, the swing plate on the right side of the air bag swings through a first steel wire rope to drive the swing plate on the left side of the air bag to swing together, and further, the swing plates on the two sides of the air bag extrude the air bag simultaneously, so that the stress area of the surface of the air bag is larger, and the air bag is prevented from being scraped due; meanwhile, the sucker at the end of the swing plate is adsorbed on the surface of the air bag, so that the extrusion plate is enabled to conveniently cross over the swing plate on the left side of the air bag after the air bag is extruded, and after the air bag rebounds under the action of the spring force, the sucker is separated from the air bag under the action of the spring force.

Preferably, the adjusting module comprises a hollow shaft motor, a first gear, a second steel wire rope, a first spring and a brush plate, the bottom of the hollow shaft motor is fixedly connected to a top plate of the liquid storage tank, gear teeth are arranged at the end part of a rotating shaft of the hollow shaft motor, the gear teeth at the end part of the rotating shaft of the hollow shaft motor are meshed with the first gear, and four first gears are symmetrically arranged on two sides of the hollow shaft motor; the first gear is rotatably connected in a mounting hole in the mounting plate, two adjacent first gears are meshed with each other, and a first spring is arranged above the first gear; the lower end of the first spring is fixedly connected to the upper end face of the mounting plate, and the upper end of the first spring is fixedly connected with the brush plate; the upper end of the brush plate is provided with a hair bundle, and the lower end face of the brush plate is fixedly connected with one end of a second steel wire rope; the other end of the second steel wire rope is fixedly connected to the first gear; the middle part of the tooth surface of the first gear is provided with an annular rectangular groove; the middle part of the second steel wire rope penetrates through a threading hole in the first gear and then is wound in the annular rectangular groove. During operation, the quill shaft motor drives a gear to rotate, the annular rectangular groove of a gear winds the steel wire rope, and then the brush board is pulled downwards through the steel wire rope, because two adjacent gears mesh, make the annular rectangular groove of an adjacent gear loosen the steel wire rope, under the effect of spring force, the brush board rebound of this gear top, and then can realize the arbitrary bending of hair bundle through the just reversal of quill shaft motor, and then realize the electroplating of the work piece that adapts to different curved surfaces, and can guarantee that the thickness of cladding material is even.

Preferably, the left side and the right side of the collecting tank are provided with recovery tanks, the outer edges of the recovery tanks are provided with backflow flanges, and the backflow flanges guide the brushing liquid flowing down from the recovery brushes into the recovery tanks without leaking; the bottom of the recovery tank is provided with a drain hole communicated with the collecting tank, the brushing liquid collected in the recovery tank flows into the collecting tank through the drain hole, and the brushing liquid flows back to the brushing liquid storage tank through a second liquid outlet, so that the purpose of cyclic utilization of the brushing liquid is realized; be equipped with the vertical spring of laying in the accumulator, the top of spring is fixed with the recovery brush, and the spring can carry out self-adjusting support according to the concrete shape of work piece and play the recovery brush, and the waste of applying paint liquid is avoided applying paint on the surface of work piece to the recovery brush can be scraped.

Preferably, the recovery brush adopt the silica gel material to make, silica gel has certain elasticity, can not scrape colored work piece, silica gel and work piece surface contact can separate the air current, can prevent that the wind that the tuber pipe blew out from causing the interference to applying paint the working face with a brush.

The invention has the following beneficial effects:

1. according to the invention, the controller is used for automatically controlling the workpiece fixing device, the painting device, the driving device, the painting liquid conveying device and the infrared distance measuring sensor, an experimenter only needs to put the workpiece into the workpiece fixing device, and then specific parameter values are set, so that the workpiece can be automatically subjected to brush plating, the manual participation is less, the labor intensity of the experimenter is reduced on one hand, the manual interference is avoided on the other hand, the quality of a plating layer is ensured, and the uniformity of the thickness of the plating layer is ensured at the same time.

2. According to the invention, the cam is arranged in the central hole of the friction wheel, the extrusion plate is slidably mounted in the chute of the friction wheel, the two air bags are symmetrically arranged on the left side and the right side below the friction wheel, the lower ends of the air bags are connected with the second one-way valve through the air pipe, the second one-way valve is communicated with the water spraying disc through the air pipe, the water spraying disc is fixedly connected to the middle part of the wool bundle, and the upper surface of the water spraying disc is provided with a group of water spraying holes, so that electroplating solution is uniformly sprayed on the upper end of the wool bundle, and; when the friction wheel drives the extrusion plate to rotate to the upper half part of the cam, the extrusion plate contracts into the friction wheel under the action of the elastic force of the spring, and the contact between the friction wheel and the surface of a workpiece is not influenced.

3. The end part of the rotating shaft of the hollow shaft motor is provided with gear teeth, the gear teeth at the end part of the rotating shaft of the hollow shaft motor are meshed with the first gear, the two sides of the hollow shaft motor are symmetrically provided with the four first gears, the first spring is arranged above the first gear, the upper end of the first spring is fixedly connected with the brush plate, and the lower end face of the brush plate is fixedly connected with one end of the second steel wire rope; the other end of the second steel wire rope is fixedly connected to the first gear, random bending of the hair bundle can be achieved through forward and reverse rotation of the hollow shaft motor, electroplating of workpieces which are suitable for different curved surfaces is achieved, and the uniform thickness of a coating can be guaranteed.

Drawings

The invention will be further explained with reference to the drawings.

FIG. 1 is a front view of the present invention;

FIG. 2 is a top view of the present invention;

FIG. 3 is a schematic view of the construction of the painting device according to the invention;

FIG. 4 is a schematic structural diagram of an anode of a plating pen according to the present invention;

FIG. 5 is an enlarged view at A in FIG. 4;

FIG. 6 is an enlarged view at B in FIG. 4;

in the figure: the painting and brushing device comprises a painting and brushing groove 1, a first liquid discharging port 11, a workpiece fixing device 2, a support frame 21, a pushing unit 22, an expansion rod 221, a top plate 222, a silica gel pad 223, a blowing unit 23, a fan 231, a pipe seat 232, an air outlet pipe 233, an electric push rod 234, a painting and brushing device 3, a collecting groove 31, a second liquid discharging port 311, a recovery groove 312, a backflow flange 313, a water flowing hole 314, a spring 315, a recovery brush 316, a painting and brushing unit 32, a micro expansion rod 321, a plating pen anode 322, a hair bundle 323, a driving device 4, a guide rod 41, a lead screw 42, a slide block 43, a servo motor 44, a painting and brushing liquid conveying device 5, a liquid supply pump 51, a painting and brushing liquid storage box 52, an infrared distance measuring sensor 6, a workpiece 7, a base 81, a support column 811, a liquid storage box 812, a protective straight pipe 813, a mounting plate 82, a support plate 83, a transverse, A second one-way valve 862, a swinging plate 863, a suction cup 864, a pulley 865, a first steel wire rope 866, a water spray disc 87, an adjusting module 9, a hollow shaft motor 91, a first gear 92, a second steel wire rope 93, a first spring 94 and a brush plate 95.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1 to 6, the electroplating brush device of the present invention comprises a brushing tank 1, a workpiece fixing device 2, a brushing device 3, a driving device 4, a brushing liquid conveying device 5 and an infrared distance measuring sensor 6; the painting groove 1 is of a hollow cuboid structure with an opening at the top, preferably, the bottom of the painting groove 1 is obliquely arranged, and the painting groove 1 is beneficial to timely discharge of painting liquid in the painting groove 1, so that the aim of recycling the painting liquid is fulfilled. The first liquid discharge port 11 is formed in the bottom of the painting groove 1, and the first liquid discharge port 11 is connected with the painting fluid conveying device 5 through a hose, so that the painting fluid in the painting groove 1 is favorably discharged to the painting fluid conveying device 5 through the first liquid discharge port 11 in time, and the purpose of recycling the painting fluid can be realized; a workpiece fixing device 2, a brushing device 3, a driving device 4 and a brushing liquid conveying device 5 are arranged on the brushing groove 1; the workpiece fixing device 2 is positioned above the painting groove 1, and the workpiece fixing device 2 is used for fixing a workpiece 7; the brushing device 3 is arranged on the driving device 4, and the brushing device 3 is used for brushing the workpiece 7; the driving device 4 is used for driving the brushing device 3 to brush and electroplate the workpiece 7 back and forth; the brushing liquid conveying device 5 is used for conveying brushing liquid to the brushing device 3; the infrared ranging sensor 6 is arranged at the bottom of the coating groove 1 and is used for detecting the thickness of the coating of the workpiece 7.

The driving device 4 comprises two guide rods 41, a lead screw 42, a sliding block 43 and a servo motor 44, the two guide rods 41 and the lead screw 42 are transversely arranged in the painting groove 1, the sliding block 43 is arranged on the guide rods 41 and the lead screw 42, and the painting device 3 is fixedly connected with the sliding block 43; the servo motor 44 is connected to the controller and is used for driving the lead screw 42 to rotate.

The brushing liquid conveying device 5 comprises a liquid supply pump 51 and a brushing liquid storage box 52; the painting liquid storage tank 52 is connected with the liquid supply pump 51 through a hose. The fluid feed pump 51 feeds the coating fluid from the coating fluid storage tank 52 to the coating device 3, and during the electroplating, the coating fluid is returned to the coating fluid storage tank 52 through a pipe by the coating device 3 to be recycled.

As an embodiment of the present invention, the work fixing device 2 includes a support frame 21, a pushing unit 22, and a blowing unit 23; the pushing unit 22 is installed above the painting groove 1 through the supporting frame 21, the blowing unit 23 is installed at the bottom of the painting groove 1, and the pushing unit 22 and the blowing unit 23 are matched with each other to fix the workpiece 7; the pushing unit 22 comprises an expansion link 221, a top plate 222 and a silica gel pad 223, the expansion link 221 is fixedly connected with the support frame 21, the top plate 222 is connected with the expansion link 221 through a bolt, the silica gel pad 223 is fixed on the lower surface of the top plate 222, the silica gel pad 223 is in direct contact with the workpiece 7, on one hand, the silica gel pad 223 can limit the workpiece 7, and on the other hand, the workpiece 7 can be prevented from being scratched. The blowing unit 23 comprises a fan 231, a pipe seat 232, an air outlet pipe 233 and an electric push rod 234, wherein the fan 231 is arranged outside the painting groove 1; the tube seats 232 are uniformly and symmetrically arranged at the bottom of the brushing groove 1; the air outlet pipes 233 are mounted at the top of the pipe seat 232 and can swing relative to the pipe seat 232, each air outlet pipe 233 is connected with the fan 231 through a pipeline, the air outlet pipes 233 are in a vertical state when working, when the air outlet pipes 233 rotate, the air outlet pipes 233 stop blowing air, when the brushing device 3 brushes the workpiece 7, the air outlet pipes 233 at corresponding positions can rotate around the pipe seat 232 under the action of external force given by the brushing device 3, at the moment, the air outlet pipes 233 stop blowing air, and the influence of wind power on the brushing work of the workpiece 7 is reduced; after the external force applied to the air outlet pipe 233 by the brushing device 3 disappears, the air outlet pipe 233 can restore to the vertical state to continue to blow air to fix the workpiece 7; the number of the electric push rods 234 is four, the four electric push rods 234 are arranged in the brushing groove 1 in a rectangular shape, the electric push rods 234 are used for temporarily supporting the workpiece 7 when the workpiece 7 is put in and taken out, the electric push rods 234 are provided with pressure sensors, the pressure sensors are used for measuring the weight of the workpiece 7, the air outlet pipe 233 blows out wind with different strengths to fix the workpiece 7 according to different weights of the workpiece 7, and the wind power is reduced on the basis that the workpiece 7 is fixed, so that the energy consumption is reduced. During operation, an experimenter places the workpiece 7 on the top of the lifted electric push rod 234, the electric push rod 234 temporarily supports the workpiece 7, the pressure sensor measures the weight of the workpiece 7 and transmits the result to the controller, and the sensor calculates the minimum wind power required for fixing the workpiece 7 according to the weight of the workpiece 7; meanwhile, the telescopic rod 221 extends downwards, when the silicone pad 223 touches the workpiece 7, the pressure sensor detects pressure increase, the telescopic rod 221 stops moving at the moment, then the fan 231 works, the air outlet pipe 233 blows air to jack the workpiece 7, the workpiece 7 extrudes the silicone pad 223 at the moment, the silicone pad 223 deforms, the deformed silicone pad 223 positions the workpiece 7, and then the painting device 3 can perform electroplating brush work on the workpiece 7. After the brush plating is completed, the expansion link 221 extends upward and contacts the workpiece 7, then the blower 231 stops working, the expansion link 221 retracts upward, and then the experimenter can take out the workpiece 7. In the working process of fixing the workpiece 7 by the blowing unit 23, the air blown out from the air outlet pipe 233 can fix the workpiece 7 and dry the surface of the workpiece 7, thereby shortening the drying process of the workpiece 7.

As an embodiment of the invention, the painting device 3 comprises a collection tank 31 and a painting unit 32; the collecting tank 31 is mounted on the sliding block 43, a second liquid discharge port 311 is formed in the bottom of the collecting tank 31, the second liquid discharge port 311 is connected with the brushing liquid storage box 52 through a hose, and the brushing liquid flows back into the brushing liquid storage box 52 through the second liquid discharge port 311, so that the cyclic utilization of the brushing liquid is realized; the number of the brushing units 32 is multiple, the brushing units 32 are arranged in the collecting tank 31 side by side, and the brushing units 32 comprise a micro telescopic rod 321, a plating pen anode 322 and a hair bundle 323; the micro telescopic rod 321 is fixedly connected to the bottom of the collecting tank 31, the plating pen anode 322 is installed at the top of the micro telescopic rod 321, and the plating pen anode 322 is provided with a hair bundle 323; the plating pen anode 322 is connected with the liquid supply pump 51 through a hose, and the liquid supply pump 51 can convey the brushing liquid in the brushing liquid storage tank to the plating pen anode 322 for the brush plating of the workpiece 7 by the hair bundle 323; a pressure sensor and an insulating pad are arranged between the micro telescopic rod 321 and the plating pen anode 322, the pressure sensor is used for detecting the pressure of the hair bundle 323 to the workpiece 7, and when the brush plating is carried out on the curved surface of the workpiece 7, the pressure of the hair bundle 323 to the workpiece 7 is ensured to be unchanged through the telescopic adjustment of the micro telescopic rod 321, so that the uniformity of the brush plating of the curved surface of the workpiece 7 is realized. When the micro telescopic rod 321 works, the micro telescopic rod 321 extends upwards, when the pressure value detected by the pressure sensor reaches a preset pressure value, the telescopic rod 221 stops moving, then the brushing liquid flows out from the hair bundle 323, then the plating pen anode 322 and the workpiece 7 are electrified to form a loop, and then the driving device 4 works to drive the brushing device 3 to reciprocate left and right. In the process, the hair bundle 323 moves up and down along with the curved surface of the workpiece 7 under the action of the micro telescopic rod 321, and meanwhile, the pressure of the hair bundle 323 on the workpiece 7 is kept unchanged, so that the uniformity of the curved surface electroplating brush on the workpiece 7 is ensured.

As an embodiment of the invention, the plating pen anode 322 comprises a base 81, a supporting column 811, an installation plate 82, a liquid storage tank 812, a protection straight pipe 813, an adjusting module 9, a supporting vertical plate 83, a transverse supporting block 831, a cam 832, a friction wheel 84, an extrusion plate 85, an air bag 86, a first check valve 861, a second check valve 862 and a water spray disk 87, wherein the base 81 is fixedly connected to the top of a micro telescopic rod 321, a pressure sensor and an insulating pad are installed between the base 81 and the micro telescopic rod 321, and the upper end surface of the base 81 is fixedly connected to the lower end of the liquid storage tank 812; the liquid storage tank 812 is connected with the liquid supply pump 51 through a hose; the lower end of the protection straight pipe 813 penetrates through the top plate of the liquid storage tank 812, and the upper end of the protection straight pipe 813 penetrates through the mounting plate 82; the mounting plate 82 is fixedly connected with the base 81 through a group of supporting columns 811, the upper end face of the mounting plate 82 is fixedly connected with the lower ends of the two supporting vertical plates 83, and the left side and the right side above the mounting plate 82 are symmetrically provided with the adjusting modules 9; the adjusting module 9 is provided with a hair bundle 323; the upper end of the supporting vertical plate 83 is provided with a friction wheel 84; the friction wheel 84 is rotatably connected between the two supporting vertical plates 83 through a rotating shaft, and a cam 832 is arranged in a central hole of the friction wheel 84; two ends of the cam 832 are fixedly connected between the two supporting vertical plates 83; two sliding grooves are formed in the inner wall of a central hole of the friction wheel 84, the sliding grooves in the two friction wheels 84 are arranged on the same straight line, an extrusion plate 85 is installed in the sliding grooves of the friction wheels 84 in a sliding mode, and two air bags 86 are symmetrically arranged on the left side and the right side below the friction wheels 84; the arc surface at the lower end of the air bag 86 is fixedly connected to the upper surface of the transverse supporting block 831; the transverse supporting block 831 is fixedly connected between the two supporting vertical plates 83; a first check valve 861 is connected below the air bag 86 through an air pipe; the lower end of the first check valve 861 extends into the liquid storage tank 812 through an air pipe; the lower end of the air bag 86 is connected with a second one-way valve 862 through an air pipe; the second one-way valve 862 is communicated with the water spray disc 87 through an air pipe; the water spraying discs 87 are fixedly connected to the middle parts of the wool bundles 323, a group of water spraying holes are formed in the upper surfaces of the water spraying discs 87, and the two adjacent water spraying discs 87 are connected through a hose. When the coating device 3 is used for carrying out electroplating brush on a workpiece 7, the friction wheel 84 is in contact with the lower surface of the workpiece 7, the plating pen anode 322 moves in the horizontal direction to drive the friction wheel 84 to roll, the friction wheel 84 rotates relative to the cam 832, when the friction wheel 84 drives the extrusion plate 85 to rotate to the lower half part of the cam 832, the cam 832 ejects the extrusion plate 85 on the friction wheel 84, the friction wheel 84 drives the extrusion plate 85 to extrude the air bag 86 below, the electroplating solution in the air bag 86 is extruded into an air pipe, the electroplating solution passes through the second one-way valve 862 to further pass through the water spray disc 87 in the middle of the hair bundle 323, and the electroplating solution is uniformly sprayed on the upper end of the hair bundle 323, so that the uniformity of the surface coating of the workpiece 7 is ensured; when the friction wheel 84 drives the extrusion plate 85 to rotate to the upper half part of the cam 832, the extrusion plate 85 is contracted into the friction wheel 84 under the action of spring force, so that the contact between the friction wheel 84 and the surface of the workpiece 7 is not influenced, the air bag 86 rebounds under the action of the spring force, negative pressure is formed in the air bag 86, the electroplating solution in the liquid storage tank 812 is further sucked into the air bag 86 through the air pipe and the one-way valve 861, and the electroplating solution in the air bag 86 is supplied for the next liquid supply for the hair bundle 323.

As an embodiment of the present invention, two swing plates 863 are symmetrically disposed at both ends of the air bag 86; the section of the swinging plate 863 is wedge-shaped, and the large end of the swinging plate 863 is hinged to one end of the air bag 86 through a hinge seat; the small end of the swinging plate 863 is fixedly connected with a suction cup 864 on the surface of one side close to the air bag 86; a pulley 865 is arranged below the swinging plate 863; the pulley 865 is fixedly connected to the hinge seat of the swinging plate 863 through a support seat; the swinging plates 863 on the two sides of the air bag 86 are connected through a first steel wire rope 866; the first wire rope 866 is sequentially connected with a side face of the swinging plate 863 on the right side of the air bag 86, a pulley 865 on the left side of the air bag 86 and the swinging plate 863 on the left side of the air bag 86 from left to right, wherein the side face is opposite to the air bag 86. When the device works, the friction wheel 84 drives the extrusion plate 85 to extrude the swinging plate 863 firstly, the swinging plate 863 drives the sucking disc 864 at the upper end to swing, the swinging plate 863 extrudes the air bag 86, so that the electroplating liquid in the air bag 86 is supplied to the upper end of the hair bundle 323, meanwhile, the swinging plate 863 at the right side of the air bag 86 swings to drive the swinging plate 863 at the left side of the air bag 86 to swing together through a steel wire rope 866, so that the swinging plates 863 at the two sides of the air bag 86 extrude the air bag 86 at the same time, the stress area of the surface of the air bag 86 is larger, and the air bag 86 is prevented from; meanwhile, the suction cups 864 at the ends of the swinging plates 863 are adsorbed on the surface of the air bag 86, so as to ensure that the pressing plates 85 can conveniently get over the swinging plates 863 on the left side of the air bag 86 after pressing the air bag 86, and when the air bag 86 rebounds under the action of the spring force, the suction cups 864 are separated from the air bag 86 under the action of the spring force.

As an embodiment of the present invention, the adjusting module 9 includes a hollow shaft motor 91, a first gear 92, a second steel wire rope 93, a first spring 94, and a brush plate 95, the bottom of the hollow shaft motor 91 is fixedly connected to a top plate of the liquid storage tank 812, gear teeth are disposed at an end of a rotating shaft of the hollow shaft motor 91, the gear teeth at the end of the rotating shaft of the hollow shaft motor 91 are engaged with the first gear 92, and four first gears 92 are symmetrically disposed at two sides of the hollow shaft motor 91; the first gears 92 are rotatably connected in mounting holes in the mounting plate 82, two adjacent first gears 92 are meshed with each other, and a first spring 94 is arranged above each first gear 92; the lower end of the first spring 94 is fixedly connected to the upper end face of the mounting plate 82, and the upper end of the first spring 94 is fixedly connected with a brush plate 95; the upper end of the brush plate 95 is provided with a hair bundle 323, and the lower end face of the brush plate 95 is fixedly connected with one end of a second steel wire rope 93; the other end of the second steel wire rope 93 is fixedly connected to the first gear 92; the middle part of the tooth surface of the first gear 92 is provided with an annular rectangular groove; the middle part of the second steel wire rope 93 passes through the threading hole in the first gear 92 and then is wound in the annular rectangular groove. During operation, hollow shaft motor 91 drives a gear 92 to rotate, the annular rectangular groove of a gear 92 winds the steel wire rope, and then brush plate 95 is pulled downwards through the steel wire rope, and because two adjacent gears 92 are meshed, the annular rectangular groove of the adjacent gear 92 loosens the steel wire rope, under the action of spring force, brush plate 95 above the gear 92 moves upwards, and then any bending of the hair bundle 323 can be realized through the forward and reverse rotation of hollow shaft motor 91, and then electroplating of workpiece 7 adapting to different curved surfaces is realized, and the uniform thickness of the plating layer can be ensured.

As an embodiment of the present invention, the collecting tank 31 is provided with recovery tanks 312 at left and right sides, the outer edge of the recovery tank 312 is provided with a backflow flange 313, and the backflow flange 313 guides the brushing liquid flowing down from the recovery brush 316 into the recovery tank 312 without leaking; the bottom of the recovery tank 312 is provided with a drain hole 314 communicated with the collecting tank 31, the brushing liquid collected in the recovery tank 312 flows into the collecting tank 31 through the drain hole 314, and the brushing liquid flows back to the brushing liquid storage tank through the second liquid outlet 311, so that the purpose of recycling the brushing liquid is realized; the recovery groove 312 is internally provided with a vertically arranged spring 315, the top of the spring 315 is fixed with a recovery brush 316, the spring 315 can support the recovery brush 316 in a self-adjusting manner according to the specific shape of the workpiece 7, the recovery brush 316 can scrape the brushing liquid on the surface of the workpiece 7, and the waste of the brushing liquid is avoided.

As an embodiment of the present invention, the recycling brush 316 is made of a silica gel material, the silica gel has a certain elasticity, and does not scratch the workpiece 7, the silica gel contacts with the surface of the workpiece 7 to separate the air flow, so as to prevent the air blown from the air outlet pipe 233 from interfering with the painting work surface.

During operation, an experimenter places the workpiece 7 on the top of the lifted electric push rod 234, the electric push rod 234 temporarily supports the workpiece 7, the pressure sensor measures the weight of the workpiece 7 and transmits the result to the controller, and the sensor calculates the minimum wind power required for fixing the workpiece 7 according to the weight of the workpiece 7; meanwhile, the telescopic rod 221 extends downwards, when the silicone pad 223 touches the workpiece 7, the pressure sensor detects that the pressure is increased, the telescopic rod 221 stops moving, then the fan 231 works, the air outlet pipe 233 blows air to jack up the workpiece 7, at the same time, the workpiece 7 extrudes the silicone pad 223, the silicone pad 223 deforms, the deformed silicone pad 223 positions the workpiece 7, then the micro telescopic rod 321 extends upwards, the hollow shaft motor 91 drives the first gear 92 to rotate, the annular rectangular groove of the first gear 92 winds the steel wire rope, the brush plate 95 is pulled downwards through the steel wire rope, because two adjacent first gears 92 are meshed, the annular rectangular groove of the adjacent first gear 92 loosens the steel wire rope, the brush plate 95 above the first gear 92 moves upwards under the action of the spring force, and further, the random bending of the hair bundle 323 can be realized through the forward and reverse rotation of the hollow shaft motor 91, the electroplating of the workpiece 7 which is suitable for different curved surfaces is further realized, the uniform thickness of a plating layer can be ensured, when the pressure value detected by the pressure sensor reaches a preset pressure value, the telescopic rod 221 stops moving, and the hollow shaft motor 91 stops rotating; the friction wheel 84 is in contact with the lower surface of the workpiece 7, the plating pen anode 322 moves in the horizontal direction to further drive the friction wheel 84 to roll, the friction wheel 84 rotates relative to the cam 832, when the friction wheel 84 drives the extrusion plate 85 to rotate to the lower half part of the cam 832, the cam 832 ejects the extrusion plate 85 on the friction wheel 84, the friction wheel 84 drives the extrusion plate 85 to extrude the air bag 86 below, the electroplating solution in the air bag 86 is further extruded into an air pipe, the electroplating solution passes through the second one-way valve 862 and further passes through the water spray disc 87 in the middle of the hair bundle 323, and further the electroplating solution is uniformly sprayed on the upper end of the hair bundle 323, so that the uniformity of the surface coating of the workpiece 7 is ensured; when the friction wheel 84 drives the extrusion plate 85 to rotate to the upper half part of the cam 832, the extrusion plate 85 contracts into the friction wheel 84 under the action of spring force, so that the contact between the friction wheel 84 and the surface of the workpiece 7 is not influenced, the air bag 86 rebounds under the action of the spring force, negative pressure is formed in the air bag 86, electroplating liquid in the liquid storage tank 812 is further sucked into the air bag 86 through the air pipe and the one-way valve 861, the electroplating liquid in the air bag 86 is used for supplying liquid for the hair bundle 323 next time, then the plating pen anode 322 and the workpiece 7 are electrified to form a loop, then the driving device 4 works to drive the brushing device 3 to reciprocate left and right, in the process of the electroplating brush, the infrared distance measuring sensor 6 detects the plating thickness of the workpiece 7 all the time, when the plating thickness reaches a set value, the electroplating is finished, then the telescopic rod 221 extends upwards and contacts the workpiece 7, and then the fan 231 stops working, the extension rod 221 is retracted upward, and then the experimenter can take out the workpiece 7.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. An electroplating brush device is characterized in that: comprises a brushing groove (1), a workpiece fixing device (2), a brushing device (3), a driving device (4), a brushing liquid conveying device (5) and an infrared ranging sensor (6); the painting groove (1) is of a hollow cuboid structure with an opening at the top, the bottom of the painting groove (1) is obliquely arranged, a first liquid discharge port (11) is formed in the bottom of the painting groove (1), the first liquid discharge port (11) is connected with the painting liquid conveying device (5) through a hose, and a workpiece fixing device (2), a painting device (3), a driving device (4), the painting liquid conveying device (5) and a controller for automatic operation of an infrared distance measuring sensor (6) are mounted on the painting groove (1); the workpiece fixing device (2) is positioned above the brushing groove (1), and the workpiece fixing device (2) is used for fixing a workpiece (7); the brushing device (3) is arranged on the driving device (4), and the brushing device (3) is used for brushing a workpiece (7); the driving device (4) is used for driving the brushing device (3) to brush and electroplate the workpiece (7) back and forth; the brushing liquid conveying device (5) is used for conveying brushing liquid to the brushing device (3); the infrared ranging sensor (6) is arranged at the bottom of the coating groove (1) and is used for detecting the thickness of a coating of the workpiece (7); wherein: the driving device (4) comprises two guide rods (41), a lead screw (42), a sliding block (43) and a servo motor (44), the two guide rods (41) and the lead screw (42) are transversely arranged in the painting groove (1), the sliding block (43) is arranged on the guide rods (41) and the lead screw (42), and the painting device (3) is fixedly connected with the sliding block (43); the servo motor (44) is connected with the controller and is used for driving the screw rod (42) to rotate; the brushing liquid conveying device (5) comprises a liquid supply pump (51) and a brushing liquid storage box (52); the brushing liquid storage box (52) is connected with the liquid supply pump (51) through a hose;

the painting device (3) comprises a collecting tank (31) and a painting unit (32); the collecting groove (31) is arranged on the sliding block (43), a second liquid discharge port (311) is formed in the bottom of the collecting groove (31), and the second liquid discharge port (311) is connected with the brushing liquid storage box (52) through a hose; the number of the brushing units (32) is multiple, the brushing units (32) are arranged in the collecting tank (31) side by side, and the brushing units (32) comprise micro telescopic rods (321), plating pen anodes (322) and hair bundles (323); the micro telescopic rod (321) is fixedly connected to the bottom of the collecting tank (31), the plating pen anode (322) is arranged at the top of the micro telescopic rod (321), and a hair bundle (323) is arranged on the plating pen anode (322); the plating pen anode (322) is connected with the liquid supply pump (51) through a hose; a pressure sensor and an insulating pad are arranged between the micro telescopic rod (321) and the plating pen anode (322), and the pressure sensor is used for detecting the pressure of the hair bundle (323) to the workpiece (7);

the plating pen anode (322) comprises a base (81), a supporting column (811), an installation plate (82), a liquid storage box (812), a protection straight pipe (813), an adjusting module (9), a supporting vertical plate (83), a transverse supporting block (831), a cam (832), a friction wheel (84), an extrusion plate (85), an air bag (86), a first check valve (861), a second check valve (862) and a water spray disk (87), wherein the base (81) is fixedly connected to the top of a micro telescopic rod (321), a pressure sensor and an insulating pad are installed between the base (81) and the micro telescopic rod (321), and the upper end face of the base (81) is fixedly connected with the lower end of the liquid storage box (812); the liquid storage tank (812) is connected with the liquid supply pump (51) through a hose; the lower end of the protection straight pipe (813) penetrates through a top plate of the liquid storage tank (812), and the upper end of the protection straight pipe (813) penetrates through the mounting plate (82); the mounting plate (82) is fixedly connected with the base (81) through a group of supporting columns (811), the upper end face of the mounting plate (82) is fixedly connected with the lower ends of two supporting vertical plates (83), and the left side and the right side above the mounting plate (82) are symmetrically provided with adjusting modules (9); the adjusting module (9) is provided with a hair bundle (323); a friction wheel (84) is arranged at the upper end of the supporting vertical plate (83); the friction wheel (84) is rotatably connected between the two supporting vertical plates (83) through a rotating shaft, and a cam (832) is arranged in a central hole of the friction wheel (84); two ends of the cam (832) are fixedly connected between the two supporting vertical plates (83); two sliding grooves are formed in the inner wall of a central hole of each friction wheel (84), the sliding grooves in the two friction wheels (84) are arranged on the same straight line, extrusion plates (85) are installed in the sliding grooves of the friction wheels (84) in a sliding mode, and two air bags (86) are symmetrically arranged on the left side and the right side below the friction wheels (84); the lower end arc surface of the air bag (86) is fixedly connected to the upper surface of the transverse supporting block (831); the transverse supporting block (831) is fixedly connected between the two supporting vertical plates (83); the lower part of the air bag (86) is connected with a one-way valve (861) through an air pipe; the lower end of the first check valve (861) extends into the liquid storage tank (812) through an air pipe; the lower end of the air bag (86) is connected with a second one-way valve (862) through an air pipe; the second one-way valve (862) is communicated with the water spray disc (87) through an air pipe; the water spraying discs (87) are fixedly connected to the middle parts of the wool bundles (323), a group of water spraying holes are formed in the upper surfaces of the water spraying discs (87), and two adjacent water spraying discs (87) are connected through a hose;

two swing plates (863) are symmetrically arranged at two ends of the air bag (86); the section of the swinging plate (863) is wedge-shaped, and the large end of the swinging plate (863) is hinged to one end of the air bag (86) through a hinged seat; the small end of the swinging plate (863) is fixedly connected with a sucker (864) on the surface of one side close to the air bag (86); a pulley (865) is arranged below the swinging plate (863); the pulley (865) is fixedly connected to the hinged seat of the swinging plate (863) through a supporting seat; the swinging plates (863) at the two sides of the air bag (86) are connected through a first steel wire rope (866); the first steel wire rope (866) is sequentially connected with a side face, opposite to the air bag (86), of a swinging plate (863) on the right side of the air bag (86), a pulley (865) on the left side of the air bag (86) and the swinging plate (863) on the left side of the air bag (86) from left to right;

the adjusting module (9) comprises a hollow shaft motor (91), a first gear (92), a second steel wire rope (93), a first spring (94) and a brush plate (95), the bottom of the hollow shaft motor (91) is fixedly connected to a top plate of the liquid storage box (812), gear teeth are arranged at the end part of a rotating shaft of the hollow shaft motor (91), the gear teeth at the end part of the rotating shaft of the hollow shaft motor (91) are meshed with the first gear (92), and four first gears (92) are symmetrically arranged on two sides of the hollow shaft motor (91); the first gears (92) are rotatably connected in mounting holes in the mounting plate (82), two adjacent first gears (92) are meshed with each other, and a first spring (94) is arranged above each first gear (92); the lower end of the first spring (94) is fixedly connected to the upper end face of the mounting plate (82), and the upper end of the first spring (94) is fixedly connected with a brush plate (95); the upper end of the brush plate (95) is provided with a hair bundle (323), and the lower end face of the brush plate (95) is fixedly connected with one end of a second steel wire rope (93); the other end of the second steel wire rope (93) is fixedly connected to the first gear (92); the middle part of the tooth surface of the first gear (92) is provided with an annular rectangular groove; the middle part of the second steel wire rope (93) penetrates through a threading hole in the first gear (92) and then is wound in the annular rectangular groove.

2. A plating brush device according to claim 1, wherein: the workpiece fixing device (2) comprises a support frame (21), a pushing unit (22) and a blowing unit (23); the pushing unit (22) is arranged above the brushing groove (1) through a support frame (21), and the blowing unit (23) is arranged at the bottom of the brushing groove (1); the pushing unit (22) comprises an expansion link (221), a top plate (222) and a silica gel pad (223), the expansion link (221) is fixedly connected with the support frame (21), the top plate (222) is connected with the expansion link (221) through a bolt, and the silica gel pad (223) is fixed on the lower surface of the top plate (222); the air blowing unit (23) comprises a fan (231), a pipe seat (232), an air outlet pipe (233) and an electric push rod (234), and the fan (231) is arranged outside the brushing groove (1); the pipe seats (232) are uniformly and symmetrically arranged at the bottom of the brushing groove (1); the air outlet pipes (233) are arranged at the top of the pipe seat (232) and can swing relative to the pipe seat (232), and each air outlet pipe (233) is connected with the fan (231) through a pipeline; the number of the electric push rods (234) is four, the four electric push rods (234) are arranged in the painting groove (1) in a rectangular mode, the electric push rods (234) are used for temporarily supporting the workpiece (7) when the workpiece (7) is placed in and taken out, and the electric push rods (234) are provided with pressure sensors which are used for measuring the weight of the workpiece (7).

3. A plating brush device according to claim 1, wherein: the left side and the right side of the collecting groove (31) are provided with recovery grooves (312), the outer edges of the recovery grooves (312) are provided with backflow flanges (313), and the backflow flanges (313) guide the brushing liquid flowing down from the recovery brushes (316) into the recovery grooves (312) without leakage; the bottom of the recovery tank (312) is provided with a drain hole (314) communicated with the collecting tank (31), the brushing liquid collected in the recovery tank (312) flows into the collecting tank (31) through the drain hole (314), and the brushing liquid flows back to the brushing liquid storage tank through a second liquid discharge port (311); a spring (315) which is vertically arranged is arranged in the recovery groove (312), and a recovery brush (316) is fixed at the top of the spring (315).

4. A plating brush device according to claim 3, wherein: the recovery brush (316) is made of silica gel materials.