CN111705316A

CN111705316A - Chemical oxidation treatment process for cast copper workpiece

Info

Publication number: CN111705316A
Application number: CN202010747259.8A
Authority: CN
Inventors: 方振钋; 吴镇宇
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-07-29
Filing date: 2020-07-29
Publication date: 2020-09-25

Abstract

The invention belongs to the technical field of metal surface processing, and particularly relates to a chemical oxidation treatment process for a cast copper workpiece, which comprises a tank body, a motor and a conveyor belt; the tank body is of a rectangular cavity type cubic structure; the motor is arranged on one side of the groove body; the output shaft of the motor penetrates and extends into the inner cavity of the groove body; one end of the output shaft of the motor, which is positioned in the groove body, is fixedly connected with a rotating shaft; the rotating shaft is sleeved with a driving wheel; the driving wheel is sleeved with a conveying belt; the conveying belt is formed by fixedly connecting and combining two conveying belts and a connecting rod; the connecting rod is sleeved with evenly distributed dividing strips; the connecting rod is positioned in the gap of the separation belt and is fixedly connected with a poking plate; according to the invention, the conveying belt and the sliding rod are arranged, and the motor is used for driving the driving wheel and the driven wheel to rotate reversely, so that the workpiece is turned over uniformly in the conveying process, the workpiece passivation effect is more uniform, and the generation probability of passivation defective products is reduced.

Description

Chemical oxidation treatment process for cast copper workpiece

Technical Field

The invention belongs to the technical field of metal surface processing, and particularly relates to a chemical oxidation treatment process for a cast copper workpiece.

Background

Passivation is all accomplished in the passivation pond among the prior art, because the passivation required time is shorter, it is all comparatively time-consuming and energy-consuming to fill the work piece and salvage the work piece in the passivation pond, and because there is friction between the work piece, it is not applicable to big batch work piece passivation treatment to collide with, there is certain contact blind area with the passivation solution simultaneously between the intensive work piece in the passivation process, thereby it is inhomogeneous to lead to the oxide film formation thickness that the top layer is fine and close, cause the cast copper work piece surface to produce erythema after accomplishing the passivation process, and then lead to cast copper work piece surface oxidation resistance to receive certain influence, passivation solution is along with carrying out the contact between the component inhomogeneous among the passivation pond among the prior art simultaneously, and there are more impurity, lead to the passivation solution to change frequently, and then lead to waste water discharge more.

A stirring formula passivating device that china patent issued, application number: 2013104236004, including the passivation groove, passivation groove bottom position be equipped with the baffle, be equipped with a plurality of through-holes on the baffle, the baffle separate the passivation groove for two upper and lower spaces, bottom space between baffle and passivation groove is equipped with the blast pipe, blast pipe and air-blower connection the blast pipe on be equipped with a plurality of exhaust holes, its effect is: through carrying out air stirring to the passivation groove for the passivation liquid in the inslot flows, and then makes each partial concentration in the inslot even, can accelerate passivation speed, makes each partial abundant passivation of work piece, but because do not carry out impurity filtering's function to passivation liquid among the device, air stirring makes the impurity of sediment along with rivers and work piece laminating easily, and then leads to the not thorough that passivation technology goes on, causes the surperficial degree synovial membrane incomplete.

In view of the above, the present invention develops a chemical oxidation treatment process for cast copper workpieces, which is used for solving the above technical problems.

Disclosure of Invention

The invention provides a chemical oxidation treatment process for a cast copper workpiece, which aims to make up the defects of the prior art and solve the problems that the passivation process in the prior art consumes more manpower during the process and the surface film forming performance is reduced due to incomplete contact between the workpiece and passivation solution easily caused by passivation of a large number of workpieces.

The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a chemical oxidation treatment process for a cast copper workpiece, which comprises the following steps:

s1: introducing the cast copper workpiece into a grinding machine, finely grinding the surface of the cast copper workpiece by using a soft brush rotating at a high speed, removing molding sand, impurities and copper oxide spots generated at a high temperature attached to the cast copper workpiece, and immediately soaking the cast copper workpiece into a gasoline solution after grinding;

s2: introducing ultrasonic waves into the gasoline solution, performing surface wandering treatment on the cast copper workpiece by utilizing the solubility of the ultrasonic waves and the gasoline, controlling the surface deoiling treatment time to be 3-5min, and performing overflow cleaning on the cast copper workpiece by using a normal-temperature aqueous solution after the soaking treatment is finished;

s3: carrying out pre-pickling for 30-40S by using 100-150ml/L sulfuric acid solution after cleaning, and carrying out erosion treatment by using mixed acid prepared by mixing sulfuric acid, nitric acid, hydrochloric acid and salt after pickling is finished, wherein the erosion time is controlled to be 3-5S;

s4: washing the cast copper workpiece after the acid etching treatment, introducing the washed cast copper workpiece into a passivation tank, performing turnover passivation treatment, controlling the passivation time to be 1.5-3min, repeatedly washing the cast copper workpiece with clear water after the passivation treatment is finished, preliminarily drying the cast copper workpiece with an air gun, and introducing the cast copper workpiece into an oven for drying treatment to complete the chemical oxidation treatment process of the cast copper workpiece;

wherein the passivation tank in S4 comprises a tank body, a motor and a conveyor belt; the tank body is of a rectangular cavity type cubic structure; the motor is arranged on one side of the groove body; the output shaft of the motor penetrates and extends into the inner cavity of the groove body; one end of the output shaft of the motor, which is positioned in the groove body, is fixedly connected with a rotating shaft; the rotating shaft is sleeved with a driving wheel; the driving wheel is sleeved with a conveying belt; the conveying belt is formed by fixedly connecting and combining two conveying belts and a connecting rod; the connecting rod is sleeved with evenly distributed dividing strips; the connecting rod is positioned in the gap of the separation belt and is fixedly connected with a poking plate; the inner wall of the groove body is fixedly connected with symmetrically designed limiting rods which are uniformly distributed; auxiliary wheels are sleeved on the limiting rods; the limiting rods are positioned in the groove body and arranged in a wave shape; the conveying belt and the auxiliary wheel are in sliding meshed connection; the side wall of the tank body is fixedly connected with mounting plates which are symmetrically designed below the transmission belt; the opposite sides of the symmetrically designed mounting plates are provided with first grooves; the two symmetrically designed mounting plates are connected with sliding rods which are uniformly distributed through a first groove in a rotating mode; one end of the first groove is rotatably connected with a driven wheel; the driven wheel is respectively meshed with the driving wheel and the auxiliary wheel; the sliding rod is positioned in the first groove, and a feed inlet is formed in one end, close to the motor, of the groove body through belt transmission; the feed inlet is positioned outside the tank body and fixedly connected with a feed plate; the feed inlet is positioned in the groove body and fixedly connected with a buffer hopper; the inclined surface of the buffer hopper is designed; the interior of the buffer table is fixedly connected with guide plates which are uniformly distributed; a discharge hole is formed in one side, away from the feed inlet, of the groove body; a discharging plate is arranged in the discharging port; the discharging plate is designed to be inclined; the discharge plate is connected with the wave crest of the transmission belt;

in the prior art, passivation is finished in a passivation tank, because passivation needs short time, time and labor are wasted when workpieces are filled in the passivation tank and fished, and because friction and collision exist among the workpieces and are not suitable for passivation treatment of large-batch workpieces, and meanwhile, certain contact blind areas exist among the intensive workpieces and passivation liquid in the passivation process, the thickness of an oxide film with a compact surface layer is uneven, red spots are formed on the surface of the copper casting workpiece after the passivation process is finished, and further the surface oxidation resistance of the copper casting workpiece is influenced to a certain extent, during operation, the copper casting workpiece after surface cleaning is sent into a buffer hopper through a feeding plate, and slides down uniformly and falls on a sliding rod under the guiding action of a guide plate in the buffer hopper, at the moment, a motor is started, and rotates to drive a rotating shaft to rotate, so as to drive a rotating wheel and a conveying belt to rotate, the stirring plate fixedly connected on the connecting rod of the rotating conveyor belt uniformly moves to drive the workpiece falling on the sliding rod, so that the workpiece moves forwards on the sliding rod along the moving direction of the conveyor belt, the rotating wheel rotates to drive the driven wheel and the sliding rod to rotate, the meshing transmission between the gears changes the rotating direction, the workpiece driven by the stirring plate is acted by the sliding rod with opposite steering direction, and turns over when moving on the sliding rod, because the surface of the sliding rod is smooth, the surface of the workpiece on the sliding rod uniformly contacts with the passivation solution to generate a uniform and compact oxide film, the workpiece moves along with the stirring plate until contacting with the discharging plate and slides out of the passivation groove along the discharging plate to complete the passivation operation, and the motor is used for driving the driving wheel and the driven wheel to reversely rotate by arranging the conveyor belt and the sliding rod, and then the workpiece is simultaneously subjected to double acting forces of the stirring plate and the rotating sliding rod on the conveying belt, so that the workpiece is turned over in the advancing process, the cast copper workpiece is uniformly contacted with the passivation solution in the passivation pool, and a uniform oxide film is generated.

Preferably, the lower surface of the buffer bucket is designed horizontally; the lower surface of the buffer bucket is provided with sliding grooves which are uniformly distributed corresponding to the poking plate; the width of the sliding groove is smaller than that of the workpiece; the top end of the poking plate is designed in a sharp shape; when in work, the cast copper workpieces gradually fall on the sliding rod along the buffer hopper, and a plurality of workpieces are easy to fall and accumulate on the same shifting plate due to a certain distance between the adjacent shifting plates, further, workpieces are impacted mutually in the running process to cause scratches on the surfaces, the bottom surfaces of the buffer hoppers are horizontally arranged, the workpieces falling into the buffer hoppers are uniformly arranged at the bottoms of the buffer hoppers under the action of the guide plates, the poking plates on the connecting rods are gradually inserted into the first sliding grooves along with the continuous running of the conveyor belt and finally protrude out of gaps where the first sliding grooves are inserted into the workpieces, thrust is formed on the workpiece, so that the workpiece falls, meanwhile, the workpiece is uniformly distributed, and the poking plate is used for automatic guiding, the anti-oxidation device can effectively prevent the workpieces from being unevenly distributed on the sliding rod, so that the workpieces are insufficiently passivated in the advancing process, and the anti-oxidation effect of the oxidation film is influenced.

Preferably, the side wall of the tank body is provided with a first sliding chute; a screw rod is rotationally connected in the first sliding groove; a sliding block is connected in the first sliding chute in a sliding manner; the sliding block is fixedly connected with the mounting plate; the sliding block is meshed with the lead screw; the lead screw extends to the upper part of the groove body and is fixedly connected with a rotating disc; during operation, because there is certain size difference between different batches of cast copper work pieces, through setting up lead screw and slide bar, make the lead screw rotate through rotating the rolling disc, and then make the sliding block of meshing on the lead screw rise or descend in first spout, and then make the distance between slide bar and the conveyer belt of rotation connection on mounting panel and the mounting panel change, can adjust the difference in height between stirring board and the slide bar effectively on the one hand, prevent that the work piece from droing, can also make the more convenient upset on the slide bar of work piece simultaneously.

Preferably, the tank body is fixedly connected with a plurality of fixed pipes below the mounting plate; the fixed pipe is sleeved with symmetrically designed impact pipes; the side of the impact pipe close to the side wall of the tank body is provided with an opening; the opening of the impact pipe is rotatably and hermetically connected with a rotating cover; the rotary cover is in a T-shaped design; a driving wheel is sleeved on the rotating cover; the driving wheel and the auxiliary wheel are designed by belt transmission; a cam is fixedly connected to one side of the rotating cover, which is close to the impact pipe; the upper side and the lower side of the impact pipe are elastically connected with extrusion plates through springs; a squeezing bag is fixedly connected between the squeezing plate and the impact tube; the extrusion bag penetrates through the impact tube and is communicated with the outside; when the passivation solution machine works, along with the continuous use of the passivation solution, part of impurities are mixed in the passivation solution, and part of oxidation films fall off to generate impurities, the impurities are attached to the surface of a workpiece to have certain negative effects on the workpiece, so that the generation probability of passivation defective products is increased, the impact tube and the extrusion bag are arranged, the auxiliary wheel is driven by the transmission belt to operate, the transmission wheel connected with the auxiliary wheel through the belt drives the rotating cover to rotate, the rotating cover rotates to drive the cam to rotate, the extrusion plate is extruded through the cam, the extrusion bag is forced to spray out the passivation solution inside, water flow formed by the passivation solution impacts the surface of the workpiece through the gap of the sliding rod, the impurities attached to the workpiece can be effectively separated along with water flow, the oxidation films on the surface of the workpiece are not affected, and meanwhile, the passivation solution with enhanced fluidity can effectively enable the whole content of the passivation solution to be more uniform, avoiding the uneven distribution of all components in the passivation solution and weakening the passivation effect.

Preferably, an impact bag is fixedly connected between the extrusion plate and the impact tube; the extrusion bag and the impact bag are designed at intervals; the extrusion bag and the impact bag are communicated with the fixed pipe and the outside through the one-way catheter; the fixed pipe penetrates through the groove body and extends to the outside; one end of the fixed pipe, which is positioned outside the tank body, is provided with a sealing plug; the one-way guide pipe of the impact bag is fixedly connected with a filter screen at the inner opening of the fixed pipe; the water pumping speed of the impact bag is greater than the water inlet speed of the extrusion bag; when in work, the content of impurities in the passivating solution is gradually increased along with the passivation, and the impact bag and the extrusion bag are arranged to work separately, in the process of cam rotation, the extrusion bag and the impact bag are gradually extruded, the extrusion bag is pressed to inject the internal liquid into the fixed tube, the impact bag extracts and sprays the liquid in the fixed tube, the liquid is extracted from the outside through the extrusion bag and the injection bag, filtered by the fixed pipe and then injected out, therefore, impurities in the passivating liquid are continuously collected into the fixed pipe in the running process, when the motor can be effectively stopped by limiting the suction force of the extrusion bag and the impact bag, the fixed pipe is kept in an anhydrous state, the sealing plug connector is opened to clean impurities, the use of passivation liquid is effectively prolonged, the discharge of waste water is reduced, the cost of the passivation liquid can be effectively saved while the water resource is saved, and the cost of the passivation process is reduced.

Preferably, one side of the sealing plug, which is close to the fixed pipe, is rotatably connected with a cleaning column; the cleaning column "+" shaped design; the cleaning column consists of an elastic filter screen; the one-way guide pipe connected with the extrusion bag is obliquely arranged in the fixed column, and the oblique directions of the one-way guide pipe and the fixed column are designed along the circumferential direction; the during operation, the passivation solution is located the one-way pipe opening injection on fixed intraductal wall through the extrusion bag on clean post, and then produce certain thrust to clean post, and then make clean post at fixed intraductal rotation, the passivation solution that sprays on the one hand filters through clean cylinder, make impurity stay on clean post, simultaneously pivoted clean post and fixed pipe wall contact, and then clear up being stained with the impurity that attaches on the pipe wall, simultaneously rotate the in-process and can also clear up the filter screen that strikes bag one-way pipe and be located fixed intraductal opening part, avoid impurity to block up the filter screen and lead to assaulting the bag effect reduction that draws water.

The invention has the following beneficial effects:

1. according to the chemical oxidation treatment process for the cast copper workpiece, the conveying belt and the sliding rod are arranged, the motor is used for driving the driving wheel and the driven wheel to rotate reversely, so that the workpiece is simultaneously subjected to double acting forces of the stirring plate and the rotating sliding rod on the conveying belt, the workpiece is turned over during the advancing process, the cast copper workpiece is uniformly contacted with the passivation solution in the passivation tank, and a uniform oxidation film is generated.

2. According to the chemical oxidation treatment process for the cast copper workpiece, the impact pipe and the extrusion bag are arranged, the auxiliary wheel is driven by the transmission belt to run, the rotating cover is further rotated to drive the cam to rotate, the extrusion plate is extruded through the cam, the extrusion bag is pressed to spray internal liquid into the fixed pipe, the impact bag extracts and sprays the internal liquid of the fixed pipe, water flow formed by passivation liquid is impacted on the surface of the workpiece through the gap of the sliding rod, impurities attached to the workpiece can be effectively separated along with water flow, meanwhile, the passivation liquid is impacted between the fixed pipe and the cleaning column, the impurities are effectively stripped, and the passivation liquid is continuously purified.

Drawings

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

FIG. 1 is a process flow diagram of the present invention;

FIG. 2 is a front view of a passivation tank;

FIG. 3 is a cross-sectional view of a passivation tank;

FIG. 4 is a partial cross-sectional view of the stationary tube;

in the figure: the device comprises a tank body 1, a motor 11, a rotating shaft 12, a driving wheel 13, a limiting rod 14, an auxiliary wheel 15, a feeding plate 16, a buffer hopper 17, a guide plate 18, a discharging plate 19, a conveying belt 2, a conveying belt 21, a connecting rod 22, a separating belt 23, a poking plate 24, a mounting plate 3, a sliding rod 31, a screw rod 32, a sliding block 33, a rotating disc 34, a fixed pipe 4, an impact pipe 41, a rotating cover 42, a driving wheel 43, a cam 44, a squeezing plate 45, a squeezing bag 46, an impact bag 47, a sealing plug 5 and a cleaning column 51.

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 4, the chemical oxidation treatment process for the cast copper workpiece according to the present invention includes the following steps:

wherein the passivation tank in S4 comprises a tank body 1, a motor 11 and a conveyor belt 2; the tank body 1 is of a rectangular cavity type cubic structure; the motor 11 is arranged on one side of the tank body 1; the output shaft of the motor 11 penetrates and extends into the inner cavity of the tank body 1; one end of the output shaft of the motor 11, which is positioned in the tank body 1, is fixedly connected with a rotating shaft 12; the rotating shaft 12 is sleeved with a driving wheel 13; the driving wheel 13 is sleeved with the conveyor belt 2; the conveyor belt 2 is formed by fixedly connecting and combining two conveyor belts 21 and a connecting rod 22; the connecting rod 22 is sleeved with evenly distributed separation belts 23; the connecting rod 22 is fixedly connected with a toggle plate 24 in the gap of the separation belt 23; the inner wall of the tank body 1 is fixedly connected with symmetrically designed limiting rods 14 which are uniformly distributed; auxiliary wheels 15 are sleeved on the limiting rods 14; the limiting rods 14 are arranged in the groove body 1 in a wave shape; the conveyor belt 2 is in sliding meshed connection with the auxiliary wheel 15; the side wall of the tank body 1 is fixedly connected with mounting plates 3 which are symmetrically designed below the transmission belt; the opposite sides of the symmetrically designed mounting plates 3 are provided with first grooves; the two symmetrically designed mounting plates 3 are connected with sliding rods 31 which are uniformly distributed through a first groove in a co-rotating manner; one end of the first groove is rotatably connected with a driven wheel; the driven wheel is respectively meshed with the driving wheel 13 and the auxiliary wheel 15; the sliding rod 31 is positioned in the first groove and transmits work through a belt; a feed inlet is formed in one end, close to the motor 11, of the tank body 1; the feed inlet is positioned outside the tank body 1 and fixedly connected with a feed plate 16; the feed inlet is positioned in the tank body 1 and fixedly connected with a buffer hopper 17; the inclined surface of the buffer hopper 17 is designed; the interior of the buffer table is fixedly connected with guide plates 18 which are uniformly distributed; a discharge hole is formed in one side, away from the feed hole, of the tank body 1; a discharge plate 19 is arranged in the discharge port; the discharging plate 19 is designed to be inclined; the discharge plate 19 is connected with the wave crest of the transmission belt;

in the prior art, passivation is finished in a passivation tank, because passivation needs short time, time and labor are wasted when workpieces are filled in the passivation tank and fished, because friction and collision exist among the workpieces and are not suitable for passivation treatment of large-batch workpieces, and meanwhile, certain contact blind areas exist among the intensive workpieces and passivation liquid in the passivation process, so that the thickness of a compact oxidized film on a surface layer is uneven, red spots are formed on the surface of a copper casting workpiece after the passivation process is finished, and further the surface oxidation resistance of the copper casting workpiece is influenced to a certain extent, during operation, the copper casting workpiece after surface cleaning is sent into a buffer hopper 17 through a feed plate 16, and slides down uniformly under the guiding action of a guide plate 18 in the buffer hopper 17 and falls on a sliding rod 31, at the moment, a motor 11 is started, and the motor 11 rotates to drive a rotating shaft 12 to rotate, the rotating wheel and the conveyor belt 2 are further driven to rotate, the poking plate 24 fixedly connected with the connecting rod 22 on the rotating conveyor belt 2 uniformly moves, further, workpieces falling on the sliding rod 31 are driven, the workpieces move forwards on the sliding rod 31 along the moving direction of the conveyor belt 2, the rotating wheel drives the driven wheel and the sliding rod 31 to rotate due to the meshing between the driving wheel 13 and the driven wheel, the rotating direction is changed due to the meshing transmission between gears, the workpieces driven by the poking plate 24 are acted by the sliding rod 31 with opposite rotation directions, and the overturning action is generated when the sliding rod 31 moves, and the surface of the sliding rod 31 is smooth, so that the surface of the workpieces on the sliding rod 31 is uniformly contacted with passivation liquid, further, a uniform and compact oxide film is generated, the workpieces move along with the poking plate 24 until being contacted with the discharge plate 19, and slide out of the passivation groove along the discharge plate 19, and then the, through setting up conveyer belt 2 and slide bar 31, use motor 11 to drive action wheel 13 and carry out the antiport from the driving wheel, and then make the work piece receive the dual effort of stirring board 24 and pivoted slide bar 31 on the conveyer belt 2 simultaneously, and then make the work piece self take place the upset in the in-process that gos forward, and then make the cast copper work piece in the passivation pond and between the passivation liquid even contact, and then generate comparatively even oxide film, on the one hand has reduced workman's intensity of labour effectively, can also make the passivation effect more homogenization simultaneously, reduce the probability that the wastrel generated.

As an embodiment of the present invention, the lower surface of the buffer hopper 17 is designed horizontally; the lower surface of the buffer hopper 17 is provided with sliding grooves which are uniformly distributed corresponding to the poking plate 24; the width of the sliding groove is smaller than that of the workpiece; the top end of the poking plate 24 is designed in a sharp shape; when the automatic assembling machine works, a cast copper workpiece gradually falls on the sliding rod 31 along the buffer hopper 17, a plurality of workpieces are easy to fall and accumulate on the same stirring plate 24 due to a certain distance between the adjacent stirring plates 24, further the workpieces are impacted mutually in the running process to cause scratches on the surface, the workpieces falling in the buffer hopper 17 are uniformly arranged at the bottom of the buffer hopper 17 under the action of the guide plate 18 by horizontally arranging the bottom surface of the buffer hopper 17, the stirring plates 24 on the connecting rod 22 are gradually inserted into the first sliding chute along with the continuous running of the conveyor belt 2 and finally protrude out of the gap where the first sliding chute is inserted into the workpieces to form thrust on the workpieces so as to cause the workpieces to fall, the workpieces are uniformly arranged, and the stirring plates 24 are automatically connected, so that the workpieces can be effectively prevented from being unevenly distributed on the sliding rod 31 to cause insufficient passivation in the advancing process, affecting the oxidation resistance of the oxide film.

As an embodiment of the present invention, a first sliding groove is formed on a side wall of the tank body 1; a screw rod 32 is rotationally connected in the first chute; a sliding block 33 is connected in the first sliding chute in a sliding manner; the sliding block 33 is fixedly connected with the mounting plate 3; the sliding block 33 is meshed with the lead screw 32; the lead screw 32 extends to the upper part of the tank body 1 and is fixedly connected with a rotating disc 34; during operation, because there is certain size difference between different batches of cast copper work pieces, through setting up lead screw 32 and slide bar 31, make lead screw 32 rotate through rotating the rolling disc 34, and then make the last sliding block 33 of meshing of lead screw 32 rise or descend in first spout, and then make the distance between slide bar 31 and the conveyer belt 2 of rotating connection on mounting panel 3 and the mounting panel 3 change, can adjust the difference in height between stirring board 24 and the slide bar 31 effectively on the one hand, prevent that the work piece from droing, can also make the work piece more convenient overturn on slide bar 31 simultaneously.

As an embodiment of the invention, the tank body 1 is fixedly connected with a plurality of fixed pipes 4 below the mounting plate 3; the fixed pipe 4 is sleeved with symmetrically designed impact pipes 41; the side of the impact pipe 41 close to the side wall of the tank body 1 is provided with an opening; the opening of the impact pipe 41 is connected with a rotary cover 42 in a rotary sealing manner; the rotary cover 42 is in a T-shaped design; a driving wheel 43 is sleeved on the rotating cover 42; the transmission wheel 43 and the auxiliary wheel 15 are designed by belt transmission; a cam 44 is fixedly connected to one side of the rotating cover 42 close to the impact pipe 41; the upper side and the lower side of the impact pipe 41 are elastically connected with extrusion plates 45 through springs; a squeezing bag 46 is fixedly connected between the squeezing plate 45 and the impact tube 41; the extrusion bag 46 penetrates through the impact tube 41 and is communicated with the outside; when the passivating liquid works, along with the continuous use of the passivating liquid, part of impurities are mixed in the passivating liquid, and part of oxidation films fall off to generate impurities, the impurities are attached to the surface of a workpiece to have certain negative effects on the workpiece, so that the generation probability of passivating defective products is increased, the impact pipe 41 and the extrusion bag 46 are arranged, the auxiliary wheel 15 is driven by the transmission belt to operate, the transmission wheel 43 connected with the auxiliary wheel 15 through the belt drives the rotating cover 42 to rotate, the rotating cover 42 rotates to drive the cam 44 to rotate, the extrusion plate 45 is extruded through the cam 44, the extrusion bag 46 is forced to spray the passivating liquid inside, water flow formed by the passivating liquid is impacted on the surface of the workpiece through the gap of the sliding rod 31, the impurities attached to the workpiece can be effectively separated from the water flow, the oxidation films on the surface of the workpiece are not affected, and meanwhile, the passivating liquid with enhanced fluidity can effectively enable the whole content of the passivating liquid to be more uniform, avoiding the uneven distribution of all components in the passivation solution and weakening the passivation effect.

As an embodiment of the present invention, an impact bag 47 is further fixedly connected between the extrusion plate 45 and the impact tube 41; the extrusion bag 46 and the impact bag 47 are designed in a spaced mode; the extrusion bag 46 and the impact bag 47 are communicated with the fixed tube 4 and the outside through a one-way catheter; the fixed pipe 4 penetrates through the tank body 1 and extends to the outside; one end of the fixed pipe 4, which is positioned outside the tank body 1, is provided with a sealing plug 5; the one-way conduit of the impact bag 47 is fixedly connected with a filter screen at the opening in the fixed pipe 4; the water pumping speed of the impact bag 47 is higher than the water inlet speed of the extrusion bag 46; when the passivation solution works, along with the gradual increase of the content of impurities in the passivation solution during passivation, the impact bag 47 and the extrusion bag 46 are arranged to work in a division manner, the extrusion bag 46 and the impact bag 47 are gradually extruded in the rotating process of the cam 44, the extrusion bag 46 is pressed to spray the internal liquid into the fixed pipe 4, the impact bag 47 extracts and sprays the internal liquid of the fixed pipe 4, the liquid is extracted from the outside through the extrusion bag 46 and the injection bag and is sprayed after being filtered by the fixed pipe 4, so that the impurities in the passivation solution are continuously collected into the fixed pipe 4 in the running process, when the motor 11 stops effectively by limiting the suction force of the extrusion bag 46 and the impact bag 47, the fixed pipe 4 is kept in a water-free state, the connector 5 is opened to clean the impurities, the use of the passivation solution is effectively prolonged, the discharge of waste water is reduced, the cost of the passivation solution is effectively saved while water resources are saved, the cost of the passivation process is reduced.

As an embodiment of the invention, a cleaning column 51 is rotatably connected to one side of the sealing plug 5 close to the fixing tube 4; the cleaning posts 51 "are" shaped design; the cleaning column 51 is composed of an elastic filter screen; the one-way conduit connected with the extrusion bag 46 is obliquely arranged in the fixed column, and the oblique directions are designed along the circumferential direction; the during operation, the passivation solution is located the one-way pipe opening injection on fixed pipe 4 inner wall through extrusion bag 46 on clean post 51, and then produce certain thrust to clean post 51, and then make clean post 51 at fixed intraductal 4 rotations, the passivation solution that sprays on the one hand is through clean post 51 face filter, make impurity stay on clean post 51, simultaneously pivoted clean post 51 and fixed 4 wall contacts of managing, and then clear up the impurity of being stained with on the pipe wall, simultaneously can also clear up the filter screen that strikes 47 one-way pipes of bag and be located fixed 4 internal opening parts at the rotation in-process, avoid impurity to block up the filter screen and lead to strikeing bag 47 effect reduction of drawing water.

The specific working process is as follows:

when the automatic copper casting machine works, a cast copper workpiece with a cleaned surface is fed into a buffer hopper 17 through a feeding plate 16, and uniformly slides downwards and falls on a sliding rod 31 under the guiding action of a guide plate 18 in the buffer hopper 17, at the moment, a motor 11 is started, the motor 11 rotates to drive a rotating shaft 12 to rotate so as to drive a rotating wheel and a conveying belt 2 to rotate, a poking plate 24 fixedly connected to a connecting rod 22 on the rotating conveying belt 2 uniformly moves so as to drive the workpiece falling on the sliding rod 31, so that the workpiece moves forwards on the sliding rod 31 along the movement direction of the conveying belt 2, the rotating wheel rotates to drive a driven wheel and the sliding rod 31 to rotate due to meshing between a driving wheel 13 and the driven wheel, the rotation direction is changed due to meshing transmission between gears, the workpiece driven by the poking plate 24 is acted by the sliding rod 31 with opposite rotation direction, and the overturning action is generated when the sliding rod 31 moves, because the surface of the sliding rod 31 is smooth, the surface of the workpiece on the sliding rod 31 is uniformly contacted with the passivation solution, so that a uniform and compact oxide film is generated, the workpiece moves along with the poking plate 24 until being contacted with the discharging plate 19, and slides out of the passivation tank along the discharging plate 19, and the passivation operation is completed.

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. A chemical oxidation treatment process for a cast copper workpiece is characterized by comprising the following steps: the chemical oxidation treatment process for the cast copper workpiece comprises the following steps:

wherein the passivation tank in S4 comprises a tank body (1), a motor (11) and a conveyor belt (2); the tank body (1) is of a rectangular cavity type cubic structure; the motor (11) is arranged on one side of the tank body (1); the output shaft of the motor (11) penetrates through and extends into the inner cavity of the tank body (1) to be designed; one end of the output shaft of the motor (11) positioned in the trough body (1) is fixedly connected with a rotating shaft (12); the rotating shaft (12) is sleeved with a driving wheel (13); the driving wheel (13) is sleeved with the conveyor belt (2); the conveyor belt (2) is formed by fixedly connecting and combining two conveyor belts (21) and a connecting rod (22) with each other; the connecting rod (22) is sleeved with evenly distributed separation belts (23); the connecting rod (22) is positioned in the gap of the separation belt (23) and fixedly connected with a poking plate (24); the inner wall of the tank body (1) is fixedly connected with symmetrically designed limiting rods (14) which are uniformly distributed; auxiliary wheels (15) are sleeved on the limiting rods (14); the limiting rods (14) are arranged in the groove body (1) in a wave shape; the conveyor belt (2) is in sliding meshed connection with the auxiliary wheel (15); the side wall of the tank body (1) is fixedly connected with mounting plates (3) which are symmetrically designed below the transmission belt; the opposite sides of the symmetrically designed mounting plates (3) are provided with first grooves; the two symmetrically designed mounting plates (3) are connected with sliding rods (31) which are uniformly distributed through a first groove in a co-rotating manner; one end of the first groove is rotatably connected with a driven wheel; the driven wheel is respectively meshed with the driving wheel (13) and the auxiliary wheel (15); the sliding rod (31) is positioned in the first groove and is driven by a belt; a feed inlet is formed in one end, close to the motor (11), of the tank body (1); the feed inlet is positioned outside the tank body (1) and is fixedly connected with a feed plate (16); the feed inlet is positioned in the groove body (1) and fixedly connected with a buffer hopper (17); the buffer hopper (17) is designed to be inclined; guide plates (18) which are uniformly distributed are fixedly connected inside the buffer table; a discharge hole is formed in one side, away from the feed hole, of the tank body (1); a discharge plate (19) is arranged in the discharge port; the discharging plate (19) is designed to be inclined; the discharge plate (19) is connected with the wave crest of the transmission belt.

2. The chemical oxidation treatment process for the cast copper workpiece according to claim 1, characterized in that: the lower surface of the buffer hopper (17) is designed horizontally; the lower surface of the buffer hopper (17) is provided with sliding grooves which are uniformly distributed corresponding to the poking plate (24); the width of the sliding groove is smaller than that of the workpiece; the top end of the poking plate (24) is designed to be sharp.

3. The chemical oxidation treatment process for the cast copper workpiece according to claim 1, characterized in that: a first sliding chute is formed in the side wall of the tank body (1); a lead screw (32) is rotationally connected in the first sliding groove; a sliding block (33) is connected in the first sliding chute in a sliding manner; the sliding block (33) is fixedly connected with the mounting plate (3); the sliding block (33) is meshed with the lead screw (32); the lead screw (32) extends to the upper part of the groove body (1) and is fixedly connected with a rotating disc (34).

4. The chemical oxidation treatment process of the cast copper workpiece according to claim 3, characterized in that: a plurality of fixed pipes (4) are fixedly connected to the tank body (1) below the mounting plate (3); the fixed pipe (4) is sleeved with symmetrically designed impact pipes (41); the side, close to the side wall of the tank body (1), of the impact pipe (41) is provided with an opening; the opening of the impact pipe (41) is connected with a rotary cover (42) in a rotary sealing manner; the rotary cover (42) is of T-shaped design; a driving wheel (43) is sleeved on the rotating cover (42); the transmission wheel (43) and the auxiliary wheel (15) are designed to be in transmission through a belt; a cam (44) is fixedly connected to one side of the rotating cover (42) close to the impact pipe (41); the upper side and the lower side of the impact pipe (41) are elastically connected with extrusion plates (45) through springs; a squeezing bag (46) is fixedly connected between the squeezing plate (45) and the impact tube (41); the extrusion bag (46) penetrates through the impact tube (41) and is communicated with the outside.

5. The chemical oxidation treatment process for the cast copper workpiece according to claim 4, characterized in that: an impact bag (47) is fixedly connected between the extrusion plate (45) and the impact tube (41); the extrusion bag (46) and the impact bag (47) are designed at intervals; the extrusion bag (46) and the impact bag (47) are communicated with the fixed tube (4) and the outside through one-way catheters; the fixed pipe (4) penetrates through the tank body (1) and extends to the outside; one end of the fixed pipe (4) positioned outside the tank body (1) is provided with a sealing plug (5); the one-way conduit of the impact bag (47) is fixedly connected with a filter screen at the opening in the fixed pipe (4); the water pumping speed of the impact bag (47) is greater than the water inlet speed of the extrusion bag (46).

6. The chemical oxidation treatment process for the cast copper workpiece according to claim 1, characterized in that: one side of the sealing plug (5) close to the fixed pipe (4) is rotatably connected with a cleaning column (51); the cleaning column (51) is of a "shape design; the cleaning column (51) consists of an elastic filter screen; the one-way guide pipe connected with the extrusion bag (46) is obliquely arranged in the fixing column, and the oblique direction is designed along the circumferential direction.