CN112791896A

CN112791896A - Automatic coating spraying equipment and control system thereof

Info

Publication number: CN112791896A
Application number: CN202110403213.9A
Authority: CN
Inventors: 李伟涛; 郝德永; 陈晓芳
Original assignee: Weifang Special Steel Group Co ltd
Current assignee: Weifang Special Steel Group Co ltd
Priority date: 2021-04-15
Filing date: 2021-04-15
Publication date: 2021-05-14
Anticipated expiration: 2041-04-15
Also published as: CN112791896B

Abstract

The invention discloses automatic coating spraying equipment which comprises a peeling room and a spraying room which are arranged side by side, wherein two carrier roller conveying lines which are arranged side by side penetrate through the insides of the peeling room and the spraying room, a lifting block and a lifting support plate are arranged between the two carrier roller conveying lines, the lifting block is positioned at the bottom of an inner cavity of the peeling room, the lifting support plate is positioned at the bottom of the inner cavity of the spraying room, two sides of the lifting support plate are respectively provided with a coating distribution box, the two coating distribution boxes can move in opposite directions, one side of each coating distribution box is provided with a spray rod, the other side of each coating distribution box is provided with a telescopic pipe, and one end of each telescopic pipe is; the full-automatic steel billet spraying device can realize full automation of a spraying process, improve the adhesive force of a coating, realize all-dimensional automatic spraying of steel billets, improve the spraying efficiency and realize large-scale batch spraying of the steel billets.

Description

Automatic coating spraying equipment and control system thereof

Technical Field

The invention relates to a spraying system, in particular to automatic coating spraying equipment and a control system thereof, and belongs to the technical field of spraying equipment.

Background

The steel billet is heated before being sprayed with a layer of heat treatment protective coating, the coating is in a solid state at normal temperature and low temperature and has certain mechanical property and adhesive property, in the process of high-temperature heating, the coating can undergo the processes of sintering, softening and melting at high temperature, the coating is gradually softened and then is converted into a semi-molten state or even a fully molten state, the compactness of the coating is greatly improved, and a layer of compact protective film is gradually formed on the surface of the steel billet. The dense anti-oxidation protective film can isolate the heated billet from the oxidizing atmosphere and prevent the oxidizing atmosphere from diffusing to the surface of the metal, so that the heated metal is protected, and the oxidation burning loss of the surface of the metal in the heating process is reduced.

Although the research on the heat treatment protective coating technology in the billet heating process is long, more billet surface protective coating products can be limited to small-scale protection application aiming at special steel types for many years, and the billet surface protective coating products have no popularization and promotion although having certain influence at home and abroad, and the reason of the result is that: the spraying equipment with high adaptability to the protective coating has extremely high requirements, and a plurality of technical defects can not be solved, so the research on the automatic billet spraying equipment is rarely done, the spraying equipment is not consistent with the actual large-scale industrial production line production process of steel rolling, and the popularization of the billet coating protection technology is limited.

At present, the spraying equipment for the billet protective coating has the following technical problems:

1. the automation degree of the spraying equipment is still to be improved, manual participation is often needed in the spraying process, full automation cannot be realized, and the labor cost is high;

2. the adhesion of the coating after spraying is low, the surface of the steel billet has various attachments due to the influence of the environment or production, the surface of the steel billet can generate irregular shapes in some process stages, and the attachments and the irregular surface can reduce the adhesion of the protective coating and influence the surface quality of the steel billet;

3. the billet is inconvenient to convey and turn in the spraying process due to the influence of the length and the weight, the surface of the billet is inconvenient to realize omnibearing spraying, and the whole spraying process usually needs multi-step operation, so that the spraying efficiency is low;

4. the spraying process is to spray the steel billets one by one, so that the yield is not effectively improved, and the method is not suitable for large-scale batch production;

5. the continuity of the spraying process is poor, and the continuous operation cannot be realized;

6. the redundant atomized coating produced in the spraying process is very easy to cause environmental pollution, and can bring much harm to the health of field workers, and the redundant atomized coating cannot be effectively recycled.

In summary, the prior art obviously has inconvenience and defects in practical use, so a new type of automatic paint spraying equipment is needed to solve the defects of the prior art.

Disclosure of Invention

Aiming at the defects in the background technology, the invention provides automatic coating spraying equipment which can realize the full automation of the spraying process; the adhesive force of the coating after spraying is improved, and the surface quality of the steel billet is improved; the omnibearing automatic spraying of the steel billet is realized, and the spraying efficiency is improved; large-scale batch spraying of the steel billets is realized, so that the yield is obviously improved; the continuity of the spraying process is realized; the pollution to the environment in the spraying process is reduced, and the redundant atomized coating is effectively recycled.

In order to solve the technical problems, the invention adopts the following technical scheme:

an automatic coating spraying device comprises a peeling room and a spraying room which are arranged side by side, wherein two carrier roller conveying lines which are arranged side by side penetrate through the peeling room and the spraying room, a lifting block and a lifting support plate are arranged between the two carrier roller conveying lines, the lifting block is positioned at the bottom of an inner cavity of the peeling room, and the lifting support plate is positioned at the bottom of the inner cavity of the spraying room;

the top of the lifting support plate is provided with three lifting arms, the top of each lifting arm is provided with an arc-shaped groove, and the arc-shaped grooves are matched with the shape of the steel billet; the bottom of the lifting supporting plate is connected with the cylinder;

two sides of the lifting support plate are respectively provided with a paint distribution box, the two paint distribution boxes can move oppositely, and one side of each paint distribution box, which is close to the carrier roller conveying line, is provided with a spray rod; the coating distribution box is provided with two telescopic pipes at one side far away from the carrier roller conveying line, the two telescopic pipes are communicated with the inner cavity of the coating distribution box, and the two telescopic pipes are symmetrically arranged; one end of the telescopic pipe is connected with one end of the coating inlet pipe; the number of the coating inlet pipes is two, and the two coating inlet pipes are provided with spraying electromagnetic valves; one end of the coating inlet pipe is connected with two discharge ports of the diverter valve, the feed port of the diverter valve is connected with the outlet of the coating storage tank through a pipeline, and a spraying pump is installed on the pipeline.

Furthermore, two sides of the lifting block are respectively provided with a multi-shaft gear box, the two multi-shaft gear boxes can move in opposite directions, three bearing cylinders are mounted inside the multi-shaft gear boxes, driven gear sets are arranged around the bearing cylinders and comprise a plurality of driven gears distributed circumferentially, adjacent driven gears are meshed, the driven gears are connected with brush rollers, and the brush rollers are located on one sides, close to the carrier roller conveying lines, of the multi-shaft gear boxes;

the bottoms of the multi-shaft gear box and the coating diversion box are fixedly connected with sliding blocks, the sliding blocks are respectively connected with linear sliding rails in a sliding manner, and the linear sliding rails are arranged at the bottoms of the inner cavities of the peeling room and the spraying room; the outer part of the sliding block is respectively connected with a piston rod of the air cylinder.

Furthermore, the bearing cylinder body consists of a cylinder and a conical cylinder, the conical cylinder is positioned on one side of the multi-shaft gear box close to the carrier roller conveying line, and the cylinder is positioned on one side of the multi-shaft gear box far away from the carrier roller conveying line; the inner end of the cylinder is fixedly connected with the small-diameter end of the conical cylinder, and the end face of the large-diameter end of the conical cylinder is flush with the outer wall surface of the multi-shaft gear box; the outer end face of the cylinder is flush with the outer wall face of the multi-shaft gear box; the inner diameter of the cylinder is larger than the diameter of the billet;

the driven gear sets are driven by the driving gears, the number of the driving gears is three, the driving gears are located above each driven gear set, and the driving gears are respectively meshed with the uppermost driven gear in the driven gear sets; adjacent driving gears are connected through a transmission chain, the middle driving gear is connected with an output shaft of a brush motor, and the brush motor is fixedly connected to the outer wall surface of the multi-shaft gear box.

Furthermore, three groups of spray rods are arranged on one side, close to the carrier roller conveying line, of the coating distribution box and are all horizontally arranged, each group of spray rods comprises three spray rods distributed in an equilateral triangle, and atomizing nozzles are arranged at the end parts of the spray rods;

the carrier roller conveying lines are arranged along the width direction of the peeling room and the spraying room, the two carrier roller conveying lines are respectively driven by a stepping motor, the stepping motors are positioned on the outer sides of the conveying initial ends of the carrier roller conveying lines, and the two stepping motors are symmetrically arranged;

the inner cavity of the peeling room is communicated with the dust removal box through a pipeline, and an induced draft fan is arranged on the pipeline; the inner cavity of the spraying room is communicated with the inner cavity of the coating storage tank through a recovery pipe, and a reflux pump is installed on the pipeline.

Further, a peeling room inlet is formed in one side, close to the conveying initial end of the carrier roller conveying line, of the peeling room, and a peeling room outlet is formed in one side, far away from the conveying initial end of the carrier roller conveying line, of the peeling room; a spraying room inlet is formed in one side, close to the conveying initial end of the carrier roller conveying line, of the spraying room, and a spraying room outlet is formed in one side, far away from the conveying initial end of the carrier roller conveying line, of the spraying room; carrier roller conveying lines penetrate through the inlet of the peeling room, the outlet of the peeling room, the inlet of the spraying room and the outlet of the spraying room; the outer sides of the peeling room inlet, the peeling room outlet, the spraying room inlet and the spraying room outlet are respectively provided with split door plates; the door plate is respectively connected with the piston rod of the air cylinder.

A control system of automatic coating spraying equipment comprises a main control module, a driving module and a PLC module, wherein the PLC module comprises a PLC controller, and the model of the PLC controller is FX3U-64 MT;

the L1 line, the L2 line and the L3 line of the three-phase power supply are connected with one end of a switch of a contactor KM1, the other end of the switch of the contactor KM1 is connected with one end of a thermal relay FR1, the other end of the thermal relay FR1 is connected with a motor M1, the part is used for controlling a draught fan of a skinning room, the L1 line of the three-phase power supply is connected with one end of a switch of a relay KA05, the other point of the switch of the relay KA05 is connected with one end of a coil of a contactor KM1, the other end of the coil of the contactor KM1 is connected with one end of a normally closed contact of a thermal relay FR1, the other end of the normally closed contact of the thermal relay FR 1;

the other end of the coil of the contactor KM2 is connected with one end of a normally closed contact of a thermal relay FR2, the other end of the normally closed contact of the thermal relay FR2 is connected with an N line, one end of a normally open contact of the contactor KM2 is connected with an input end X32 pin of a PLC controller, and the other end of the normally open contact of the contactor KM2 is connected with the N line;

the L1 line, the L2 line, L3 line connection of three phase current has contactor KM3 switch one end, the contactor KM3 switch other end is connected with thermorelay FR3 one end, the thermorelay FR3 other end is connected with motor M3, this part is used for spray room return pump control, the L1 line connection of three phase current has relay KA07 switch one end, relay KA07 switch another point is connected with contactor KM3 coil one end, the contactor KM3 coil other end is connected with thermorelay FR3 normally closed contact one end, thermorelay FR3 normally closed contact another end connects the N line, contactor KM 3's normally open contact one end is connected with PLC controller's input X33 foot, contactor KM 3's normally open contact another end connects the N line.

Further, the driving module comprises a frequency converter Q1, the FWD pin of the frequency converter Q1 is connected with one end of a switch KA01, the other end of the switch KA01 is connected with the COM pin of the frequency converter Q1, the DI1 pin of the frequency converter Q1 is connected with one end of a switch KA02, the other end of the switch KA02 is connected with the COM pin of the frequency converter Q1, the TA pin of the frequency converter Q1 is connected with an input end X02 pin of a PLC controller, the TC pin of the frequency converter Q1 is connected with 0V, the R pin, the S pin and the T pin of the frequency converter Q1 are connected with an L1 line, an L2 line and an L3 line of a three-phase power supply, and the U pin, the V pin, the W pin and the TE pin of the frequency converter Q1 are connected with a motor M4 for frequency conversion;

the driving module further comprises a frequency converter Q2, the FWD pin of the frequency converter Q2 is connected with one end of a relay KA03 switch, the other end of the relay KA03 switch is connected with the COM pin of the frequency converter Q2, the DI1 pin of the frequency converter Q2 is connected with one end of a relay KA04 switch, the other end of the relay KA04 switch is connected with the COM pin of the frequency converter Q2, the TA pin of the frequency converter Q2 is connected with the X03 pin of the input end of a PLC controller, the TC pin of the frequency converter Q2 is connected with 0V, the R pin, the S pin and the T pin of the frequency converter Q2 are connected with the L1 line, the L2 line and the L3 line of a three-phase power supply, and the U pin, the V pin, the W pin and the TE pin of the frequency converter Q2 are connected with;

the driving module further comprises a carrier roller stepping driving Q3, a PLS + pin and a DIR + pin of the carrier roller stepping driving Q3 are connected with +24V, a PLS-pin of the carrier roller stepping driving Q3 is connected with one end of a resistor R1, the other end of the resistor R1 is connected with a Y0 pin of an OUTPUT01 unit U3 of a PLC controller, a DIR-pin of the carrier roller stepping driving Q3 is connected with one end of a resistor R2, the other end of the resistor R2 is connected with a Y1 pin of an OUTPUT01 unit U3 of the PLC controller, an ALM pin of the carrier roller stepping driving Q3 is connected with 0V, a COM pin of the carrier roller stepping driving Q3 is connected with an input end X01 pin of the PLC controller, and an A + pin, an A-pin, a + pin, a-pin, a B + pin and a B-pin of the carrier roller stepping driving.

Furthermore, the input end X04 pin of the PLC controller is connected with one end of a displacement sensor F1, the other end of the displacement sensor F1 is connected with 0V, the part is used for detecting the opening of the door panel at the inlet of the peeling room, the input end X05 pin of the PLC controller is connected with one end of a displacement sensor F2, the other end of the displacement sensor F2 is connected with 0V, the part is used for detecting the closing of the door panel at the inlet of the peeling room, the input end X06 pin of the PLC controller is connected with one end of a displacement sensor F3, the other end of the displacement sensor F3 is connected with 0V, the part is used for detecting the opening of the door panel at the outlet of the peeling room, the input end X07 pin of the PLC controller is connected with one end of a displacement sensor F4, the other end of a displacement sensor F4 is connected with 0V, the part is used for detecting the closing of the door panel at the outlet of the peeling room, the input end X11 pin of the PLC is connected with one end of a displacement sensor F6, the other end of the displacement sensor F6 is connected with 0V, the part is used for detecting under a jacking cylinder of a peeling room, the input end X12 pin of the PLC is connected with one end of a displacement sensor F7, the other end of the displacement sensor F7 is connected with 0V, the part is used for detecting the output of a 1# hairbrush cylinder of the peeling room, the input end X13 pin of the PLC is connected with one end of a displacement sensor F8, the other end of a displacement sensor F8 is connected with 0V, the part is used for detecting the return of the 1# hairbrush cylinder of the peeling room, the input end X14 pin of the PLC is connected with one end of a displacement sensor F9, the other end of a displacement sensor F9 is connected with 0V, the part is used for detecting the output of a 2# hairbrush cylinder of the peeling room, the input end X15 pin of the PLC is connected with;

the input end X16 pin of the PLC controller is connected with one end of a displacement sensor F11, the other end of the displacement sensor F11 is connected with 0V, the part is used for detecting the opening of an inlet door plate of a spraying room, the input end X17 pin of the PLC controller is connected with one end of a displacement sensor F12, the other end of the displacement sensor F12 is connected with 0V, the part is used for detecting the closing of the inlet door plate of the spraying room, the input end X20 pin of the PLC controller is connected with one end of a displacement sensor F13, the other end of a displacement sensor F13 is connected with 0V, the part is used for detecting the opening of an outlet door plate of the spraying room, the input end X21 pin of the PLC controller is connected with one end of a displacement sensor F14, the other end of a displacement sensor F14 is connected with 0V, the part is used for detecting the closing of the outlet door plate of the spraying room, the input end X737, the input end X23 foot of PLC controller is connected with displacement sensor F16 one end, the other end of displacement sensor F16 connects 0V, this part is used for detecting under the jacking cylinder of spraying room, the input end X24 foot of PLC controller is connected with displacement sensor F17 one end, the other end of displacement sensor F17 connects 0V, this part is used for spraying room 1# telescopic cylinder to go out to detect, the input end X25 foot of PLC controller is connected with displacement sensor F18 one end, the other end of displacement sensor F18 connects 0V, this part is used for spraying room 1# telescopic cylinder to go back to detect, the input end X26 foot of PLC controller is connected with displacement sensor F19 one end, the other end of displacement sensor F19 connects 0V, this part is used for spraying room 2# telescopic cylinder to go out to detect, the input end X27 foot of PLC controller is connected with displacement sensor F20 one end, the other end of displacement sensor F20 connects 0V, this part is used for spraying room 2 #.

Furthermore, a pin X00 at the input end of the PLC controller is connected with one end of a proximity switch SQ1, the other end of the proximity switch SQ1 is connected with +24V and 0V, the other end of the proximity switch SQ1 is used for detecting a carrier roller conveying stepping motor, a pin X01 at the input end is used for alarming the carrier roller conveying stepping motor, a pin X02 at the input end is used for alarming the No. 1 brush motor, and a pin X03 at the input end is used for alarming the No. 2 brush motor; the input end X30 pin of the PLC is connected with one end of a proximity switch SQ2, the other end of the proximity switch SQ2 is connected with +24V and 0V, the other end of the proximity switch SQ2 is used for detecting the liquid level of the coating liquid, the input end X31 pin of the PLC is used for controlling the operation of an induced draft fan of a peeling room, the input end X32 pin of the PLC is used for controlling the operation of a spraying pump, the input end X33 pin of the PLC is used for controlling the operation of a reflux pump, the input end X34 pin of the PLC is connected with one end of a button SE1, the other end of the button SE1 is connected with 0V, the other end of the button SE1 is used for controlling a starting button, the input end X35 pin of the PLC is connected with one end of a button SE2, the other end of the button SE2 is connected with 0V, the other end of the button SE 3.

Furthermore, the output end Y0 pin of the PLC is used for pulse control of the carrier roller conveying stepping motor, the output end Y1 pin of the PLC is used for direction control of the carrier roller conveying stepping motor, the output end Y2 pin of the PLC is connected with one end of a coil of a relay KA01, the other end of a coil of the relay KA01 is connected with +24V, the part is used for variable-frequency starting control of the No. 1 brush motor, the output end Y3 pin of the PLC is connected with one end of a coil of a relay KA02, the other end of the coil of the relay KA02 is connected with +24V, the part is used for variable-frequency high-low speed switching control of the No. 1 brush motor, the output end Y4 pin of the PLC is connected with one end of a coil of a relay KA03, the other end of the coil of the relay KA03 is connected with +24V, the part is used for variable-frequency starting control of the No. 2 brush motor, the output, the part is used for the frequency conversion high-low speed switching control of the No. 2 brush motor;

the output end Y6 pin of the PLC controller is connected with one end connected with an electromagnetic valve YV1, the other end of the electromagnetic valve YV1 is connected with +24V, the part is used for controlling an inlet door plate cylinder of a peeling room, the output end Y7 pin of the PLC controller is connected with one end connected with an electromagnetic valve YV2, the other end of the electromagnetic valve YV2 is connected with +24V, the part is used for controlling an outlet door plate cylinder of the peeling room, the output end Y10 pin of the PLC controller is connected with one end connected with an electromagnetic valve YV3, the other end of the electromagnetic valve YV3 is connected with +24V, the part is used for controlling a jacking cylinder of the peeling room, the output end Y11 pin of the PLC controller is connected with one end connected with an electromagnetic valve YV4, the other end of the electromagnetic valve YV4 is connected with +24V, the part is used for controlling a 1# peeling room hairbrush cylinder, the output end Y12 pin of the PLC controller, the output end Y13 foot of PLC controller is connected with and is connected with solenoid valve YV6 one end, another termination +24V of solenoid valve YV6, this part is used for spraying room import door plant cylinder control, the output end Y14 foot of PLC controller is connected with and is connected with solenoid valve YV7 one end, another termination +24V of solenoid valve YV7, this part is used for spraying room export door plant cylinder control, the output end Y15 foot of PLC controller is connected with and is connected with solenoid valve YV8 one end, the other termination +24V of solenoid valve YV8, this part is used for spraying room jacking cylinder control, the output end Y16 foot of PLC controller is connected with and is connected with solenoid valve YV9 one end, the other termination +24V of solenoid valve YV9, this part is used for spraying room # telescopic cylinder control, the output end Y17 foot of PLC controller is connected with solenoid valve YV10 one end, the other termination +24V 10 of solenoid valve YV, this part is used.

After the technical scheme is adopted, compared with the prior art, the invention has the following advantages:

the billet is sequentially conveyed to a peeling room and a spraying room through a carrier roller conveying line to carry out surface impurity removal and spraying work, and the automation of the surface impurity removal and spraying process of the billet is realized;

the brush rollers symmetrically arranged at the two ends of the steel billet rotate at a high speed to completely remove attachments on the surface of the steel billet, the removal efficiency is high, the attachments are not left in the removal process, the surfaces of the steel billets are regular as much as possible due to the high-speed rotation of the brush rollers, the removal of the attachments and the regular surfaces of the steel billets can improve the adhesive force of the protective coating, and the surface quality of the steel billets is improved;

the spray rods and the atomizing nozzles on the two sides of the steel billet synchronously move in opposite directions under the action of the air cylinder, the surface of the steel billet is uniformly sprayed in all directions in the moving process of the atomizing nozzles, the two sides of the steel billet are synchronously sprayed, the spraying efficiency is obviously improved, and the atomizing nozzles can spray in a reciprocating manner under the action of the air cylinder so as to ensure the uniformity of the spraying thickness;

the steel billets can be automatically sprayed in batches, and synchronous spraying of a plurality of steel billets can be finished once, so that the yield is obviously improved;

the steel billet is conveyed in a step-by-step manner by the carrier roller conveying line and the cylinders in a matching manner, and each spraying action is continuously finished in the conveying process;

the door plant of the outside is imported and exported in peeling room and the spraying room all can self-sealing, avoids dust, atomizing coating etc. to reveal to the air in, and unnecessary atomizing coating that the spraying process produced in time passes through the recycle pump and delivers to the coating storage tank in, both can realize the recovery again to coating, can also reduce the pollution that causes the environment.

The present invention will be described in detail below with reference to the accompanying drawings and examples.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the installation of a multi-axis gearbox;

FIG. 3 is a front view of the structure of FIG. 2;

FIG. 4 is a schematic view of the internal structure of a multi-axis gearbox;

FIG. 5 is a schematic view of the installation of the paint distribution box;

FIG. 6 is a schematic diagram of the position structure of the atomizer and the billet during the spraying process;

FIG. 7 is a schematic view of the installation of the diverter valve;

FIG. 8 is an electrical schematic of a master control module in the control system;

FIG. 9 is an electrical schematic of a variable frequency drive in a drive module in the control system;

FIG. 10 is an electrical schematic of the stepper drive in the drive module in the control system;

FIGS. 11 and 12 are electrical schematic diagrams of the inputs of PLC modules in the control system;

fig. 13 and 14 are electrical schematic diagrams of the output of the PLC module in the control system.

In the figure, 1-steel billet, 2-peeling room, 3-spraying room, 4-roller conveying line, 5-stepping motor, 6-peeling room inlet, 7-peeling room outlet, 8-spraying room inlet, 9-spraying room outlet, 10-door plate, 11-lifting block, 12-multi-shaft gear box, 13-slide block, 14-linear slide rail, 15-bearing cylinder, 16-driven gear set, 17-driving gear, 18-driving chain, 19-brush motor, 20-brush roller, 21-induced air fan, 22-dust box, 23-lifting support plate, 24-lifting arm, 25-arc groove, 26-paint distribution box, 27-spray rod, 28-atomizing spray head, 29-telescopic pipe, 30-a coating inlet pipe, 31-a spraying electromagnetic valve, 32-a shunt valve, 33-a spraying pump, 34-a coating storage tank, 35-a recovery pipe and 36-a reflux pump.

Detailed Description

In order to more clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will now be described with reference to the accompanying drawings.

Example 1 automatic coating spraying apparatus

As shown in fig. 1-7, the invention provides automatic coating spraying equipment, which comprises a peeling room 2 and a spraying room 3 which are arranged side by side, wherein the peeling room 2 and the spraying room 3 are both of cuboid box type structures, carrier roller conveying lines 4 penetrate through the peeling room 2 and the spraying room 3, the carrier roller conveying lines 4 are used for conveying steel billets 1 at equal intervals, the steel billets 1 are of round bar structures, and the conveying direction of the carrier roller conveying lines 4 is perpendicular to the length direction of the steel billets 1.

The carrier roller conveying lines 4 are arranged along the width direction of the peeling room 2 and the spraying room 3, the number of the carrier roller conveying lines 4 is two, the two carrier roller conveying lines 4 are arranged in parallel, and the advantage that the carrier roller conveying lines 4 are arranged in parallel is that the steel billets 1 with longer length can be conveniently conveyed; the carrier roller conveying lines 4 are respectively driven by one stepping motor 5, the stepping motors 5 are located on the outer sides of the conveying initial ends of the carrier roller conveying lines 4, the two stepping motors 5 are symmetrically arranged, and the two stepping motors 5 work synchronously to realize synchronous operation of the two carrier roller conveying lines 4.

And a peeling room inlet 6 is formed in one side, close to the conveying initial end of the carrier roller conveying line 4, of the peeling room 2, and a peeling room outlet 7 is formed in one side, far away from the conveying initial end of the carrier roller conveying line 4, of the peeling room 2.

One side of the spraying room 3, which is close to the conveying initial end of the carrier roller conveying line 4, is provided with a spraying room inlet 8, the spraying room inlet 8 is adjacent to a peeling room outlet 7, and one side of the spraying room 3, which is far away from the conveying initial end of the carrier roller conveying line 4, is provided with a spraying room outlet 9.

A carrier roller conveying line 4 is arranged in the peeling room inlet 6, the peeling room outlet 7, the spraying room inlet 8 and the spraying room outlet 9 in a penetrating manner; the outer sides of the peeling room inlet 6, the peeling room outlet 7, the spraying room inlet 8 and the spraying room outlet 9 are respectively provided with split door plates 10, the split door plates 10 are used for opening and closing the peeling room inlet 6, the peeling room outlet 7, the spraying room inlet 8 and the spraying room outlet 9, sealing of the peeling room 2 and the spraying room 3 is achieved, and pollution to the environment caused by scraps and redundant coatings generated in the impurity removal and spraying processes is avoided.

The door plate 10 is respectively connected with a piston rod of the air cylinder, and the air cylinder stretches to close or open the split door plate 10.

A lifting block 11 is arranged between the two carrier roller conveying lines 4, the lifting block 11 is positioned at the bottom of the inner cavity of the peeling room 2, and the lifting block 11 is used for lifting the steel billet 1; the length direction of the lifting block 11 is the same as the conveying direction of the carrier roller conveying line 4; the bottom of the lifting block 11 is connected with an air cylinder, and the air cylinder extends out to lift the lifting block 11, so that the steel blank 1 is lifted from the carrier roller conveying line 4.

Two sides of the lifting block 11 are respectively provided with a multi-shaft gear box 12, and the two multi-shaft gear boxes 12 are symmetrically arranged; the bottom of the multi-shaft gear box 12 is fixedly connected with two sliding blocks 13, the sliding blocks 13 are respectively connected with a linear sliding rail 14 in a sliding manner, and the two linear sliding rails 14 are arranged at the bottom of the inner cavity of the peeling room 2 in parallel; the outer part of the sliding block 13 is respectively connected with a piston rod of an air cylinder, and the air cylinders on the two sides synchronously extend out to realize the opposite movement of the two multi-axis gear boxes 12.

A row of bearing cylinders 15 are arranged in the multi-shaft gear box 12, the number of the bearing cylinders 15 is three, the adjacent bearing cylinders 15 are arranged at equal intervals, and the central line of each bearing cylinder 15 is collinear with the axis of the lifted steel billet 1; the bearing cylinder body 15 is used for bearing two ends of the steel billet 1 in the impurity removal process, the bearing cylinder body 15 is composed of a cylinder and a conical cylinder, the conical cylinder is positioned on one side of the multi-shaft gear box 12 close to the carrier roller conveying line 4, and the cylinder is positioned on one side of the multi-shaft gear box 12 far away from the carrier roller conveying line 4; the inner end of the cylinder is fixedly connected with the small-diameter end of the conical cylinder, and the end face of the large-diameter end of the conical cylinder is flush with the outer wall surface of the multi-shaft gear box 12; the outer end face of the cylinder is flush with the outer wall face of the multi-shaft gear box 12; the inner diameter of the cylinder is larger than the diameter of the billet 1; in the process of removing the attachments on the surface of the billet 1, the end of the billet 1 passes through the conical cylinder and then is inserted into the cylinder for supporting.

A driven gear set 16 is respectively arranged around the bearing cylinder 15, the driven gear set 16 comprises a plurality of driven gears which are distributed circumferentially, and adjacent driven gears are meshed; the driven gears are connected with a brush roller 20, and the brush roller 20 is positioned on one side of the multi-shaft gear box 12 close to the carrier roller conveying line 4; the driven gears correspond to the brush rollers 20 one to one, and rotation of the driven gears realizes rotation of the brush rollers 20.

The brush rollers 20 rotate at a high speed to remove attachments on the surface of the steel billet 1, and the plurality of brush rollers 20 distributed circumferentially rotate around the steel billet 1 synchronously, so that the attachments on the surface of the steel billet 1 can be removed completely, and no residue is left in the removing process.

The driven gear sets 16 are driven by driving gears 17, the number of the driving gears 17 is three, the driving gears 17 are located above each driven gear set 16, the driving gears 17 are respectively meshed with the uppermost driven gear in the driven gear sets 16, and the driving gears 17 rotate to drive each driven gear in the driven gear sets 16 to rotate; adjacent driving gears 17 are connected through a transmission chain 18, the middle driving gear 17 is connected with an output shaft of a brush motor 19, and the brush motor 19 is fixedly connected to the outer wall surface of the multi-shaft gear box 12; the rotation of the brush motor 19 realizes the synchronous rotation of the three driving gears 17, further realizes the rotation of each driven gear in the 3 driven gear sets 16, and finally realizes the rotation of the brush roller 20, and the brush motor 19 provides a power source for the rotation of the brush roller 20.

The inner cavity of the peeling room 2 is communicated with the dust removal box 22 through a pipeline, wherein the pipeline is provided with an induced draft fan 21, and the induced draft fan 21 guides the scrap residues generated in the impurity removing and peeling processes of the steel billet 1 to the inner treatment of the dust removal box 22 so as to ensure the cleanliness in the peeling room 2.

Two lifting support plates 23 arranged in parallel are arranged between the two carrier roller conveying lines 4, the lifting support plates 23 are positioned at the bottom of the inner cavity of the spraying room 3, and the lifting support plates 23 are used for lifting the steel billet 1 subjected to impurity removal treatment so as to facilitate spraying; the top of the lifting supporting plate 23 is provided with three lifting arms 24, the top of each lifting arm 24 is provided with an arc-shaped groove 25, and each arc-shaped groove 25 is matched with the shape of the steel billet 1; the bottom of the lifting support plate 23 is connected with an air cylinder, and the air cylinder extends out to lift the lifting support plate 23, so that the steel blank 1 is lifted from the carrier roller conveying line 4.

Two sides of the lifting support plate 23 are respectively provided with a paint distribution box 26, and the two paint distribution boxes 26 are symmetrically arranged; the bottom of the coating diversion box 26 is fixedly connected with two sliding blocks 13, the sliding blocks 13 are respectively connected with a linear sliding rail 14 in a sliding manner, and the two linear sliding rails 14 are arranged at the bottom of the inner cavity of the spraying room 3 in parallel; the outside of the sliding block 13 is respectively connected with the piston rods of the cylinders, and the cylinders on the two sides synchronously extend out to realize the opposite movement of the two paint distribution boxes 26.

The coating diversion box 26 has a diversion function, and the coating diversion box 26 diverts the coating to each spray rod 27; three groups of spray rods 27 are arranged on one side of the coating distribution box 26 close to the carrier roller conveying line 4, the spray rods 27 are all horizontally arranged, each group of spray rods 27 comprises three spray rods 27 distributed in an equilateral triangle, and the central line of the equilateral triangle is collinear with the axis of the lifted billet 1; the end parts of the spray rods 27 are all provided with atomizing nozzles 28, and the atomizing nozzles 28 can slide around the billet 1 to realize uniform spraying on the surface of the billet 1.

The two paint distribution boxes 26 synchronously move in opposite directions to drive the spray rods 27 and the atomizing nozzles 28 on the two sides to synchronously move in opposite directions, so that the two sides of the steel billet 1 are synchronously sprayed, and the spraying efficiency is obviously improved.

One side of the paint distribution box 26, which is far away from the carrier roller conveying line 4, is connected with one end of a telescopic pipe 29, the telescopic pipes 29 are communicated with the inner cavity of the paint distribution box 26, the number of the telescopic pipes 29 is two, and the two telescopic pipes 29 are symmetrically arranged; the other end of the telescopic pipe 29 is connected with one end of a coating material inlet pipe 30; the number of the coating inlet pipes 30 is two, and the two coating inlet pipes 30 are provided with the spraying electromagnetic valves 31; one end of the paint inlet pipe 30 is connected with two discharge ports of a diverter valve 32, the diverter valve 32 divides the paint into two parts, the feed port of the diverter valve 32 is connected with the outlet of a paint storage tank 34 through a pipeline, and a spraying pump 33 is arranged on the pipeline.

The paint storage tank 34 is used for storing the paint to be sprayed, and the paint in the paint storage tank 34 sequentially passes through the spraying pump 33, the flow dividing valve 32, the paint inlet pipe 30, the telescopic pipe 29 and the spray rod 27 to reach the atomizing spray head 28.

The inner cavity of the spraying room 3 is communicated with the inner cavity of the paint storage tank 34 through a recovery pipe 35, a return pump 36 is installed on the pipeline, and the return pump 36 pumps redundant atomized paint generated in the spraying process to the paint storage tank 34 so as to be recycled.

A control system of automatic coating spraying equipment comprises a main control module, a driving module and a PLC module.

As shown in fig. 8, the main control module includes a 380V three-phase power supply R line, an S line, a T line and an N line, the 380V three-phase power supply R line, the S line, the T line and the N line are connected with one end of a breaker QF1, the other end of the breaker QF1 is connected with an L1 line, an L2 line, an L3 line and the N line of the three-phase power supply, the L1 line, the L2 line and the L3 line of the three-phase power supply are connected with a frequency converter Q1 and a frequency converter Q2, the L1 line and the N line of the three-phase power supply are connected with one end of a switching power supply and a PLC module, and.

The L1 line of three phase current, the L2 line, L3 line connection has contactor KM1 switch one end, the contactor KM1 switch other end is connected with thermorelay FR1 one end, the thermorelay FR1 other end is connected with motor M1, this part is used for the control of skinning room induced air fan, three phase current L1 line connection has relay KA05 switch one end, relay KA05 switch another point is connected with contactor KM1 coil one end, the contactor KM1 coil other end is connected with thermorelay FR1 normally closed contact one end, thermorelay FR1 normally closed contact another termination N line, contactor KM 1's normally open contact one end is connected with PLC controller's input X31 foot, contactor KM 1's normally open contact another termination N line.

The L1 line of three phase current, the L2 line, L3 line connection has contactor KM2 switch one end, the contactor KM2 switch other end is connected with thermorelay FR2 one end, the thermorelay FR2 other end is connected with motor M2, this part is used for spraying room spraying pump control, the L1 line connection of three phase current has relay KA06 switch one end, relay KA06 switch another point is connected with contactor KM2 coil one end, the contactor KM2 coil other end is connected with thermorelay FR2 normally closed contact one end, thermorelay FR2 normally closed contact another end termination N line, contactor KM 2's normally open contact one end is connected with PLC controller's input X32 foot, contactor KM 2's normally open contact another end termination N line.

As shown in fig. 9, the driving module includes a frequency converter Q1, the FWD pin of the frequency converter Q1 is connected with one end of a switch KA01, the switch KA01 is connected with the COM pin of the frequency converter Q1 at the other end, the DI1 pin of the frequency converter Q1 is connected with one end of a switch KA02, the switch KA02 is connected with the COM pin of the frequency converter Q1 at the other end, the TA pin of the frequency converter Q1 is connected with an input terminal X02 pin of a PLC controller, the TC pin of the frequency converter Q1 is connected with 0V, the R pin, the S pin and the T pin of the frequency converter Q1 are connected with an L1 line, an L2 line and an L3 line of a three-phase power supply, and the U pin, the V pin, the W pin and the TE pin of the frequency converter Q1 are connected with a motor M4 for.

The driving module further comprises a frequency converter Q2, the FWD pin of the frequency converter Q2 is connected with one end of a switch KA03, the other end of the switch KA03 is connected with the COM pin of the frequency converter Q2, the DI1 pin of the frequency converter Q2 is connected with one end of a switch KA04, the other end of the switch KA04 is connected with the COM pin of the frequency converter Q2, the TA pin of the frequency converter Q2 is connected with the input end X03 pin of a PLC controller, the TC pin of the frequency converter Q2 is connected with 0V, the R pin, the S pin and the T pin of the frequency converter Q2 are connected with an L1 line, an L2 line and an L3 line of a three-phase power supply, and the U pin, the V pin, the W pin and the TE pin of the frequency converter Q2 are connected with a motor M5 for.

As shown in fig. 10, the driving module further includes a roller step driving Q3, a PLS + pin and a DIR + pin of the roller step driving Q3 are connected to +24V, a PLS-pin of the roller step driving Q3 is connected to one end of a resistor R1, the other end of the resistor R1 is connected to a Y0 pin of an OUTPUT01 unit U3 of a PLC controller, a DIR-pin of the roller step driving Q3 is connected to one end of a resistor R2, the other end of the resistor R2 is connected to a Y1 pin of an OUTPUT01 unit U3 of the PLC controller, an ALM pin of the roller step driving Q3 is connected to 0V, a COM pin of the roller step driving Q3 is connected to a pin X01 of the PLC controller, and a + pin, a-pin, B + pin and B-pin of the roller step driving Q3 are connected to a motor M6 for driving the roller conveying step motor.

As shown in fig. 11, the PLC module includes a PLC controller, the model number of the PLC controller is FX3U-64MT, the input end X00 pin of the PLC controller is connected with one end of a proximity switch SQ1, the other end of the proximity switch SQ1 is connected with +24V and 0V, the proximity switch SQ1 is used for detection of the roller conveying stepping motor, the input end X01 pin is used for alarm of the roller conveying stepping motor, the input end X02 pin is used for alarm of the # 1 brush motor, and the input end X03 pin is used for alarm of the # 2 brush motor.

The input end X04 pin of the PLC controller is connected with one end of a displacement sensor F1, the other end of the displacement sensor F1 is connected with 0V, the part is used for detecting the opening of an inlet door plate of a peeling room, the input end X05 pin of the PLC controller is connected with one end of a displacement sensor F2, the other end of the displacement sensor F2 is connected with 0V, the part is used for detecting the closing of the inlet door plate of the peeling room, the input end X06 pin of the PLC controller is connected with one end of a displacement sensor F3, the other end of a displacement sensor F3 is connected with 0V, the part is used for detecting the opening of an outlet door plate of the peeling room, the input end X07 pin of the PLC controller is connected with one end of a displacement sensor F4, the other end of a displacement sensor F4 is connected with 0V, the part is used for detecting the closing of the outlet door plate of the peeling room, the input end X737, the input end X11 foot of PLC controller is connected with displacement sensor F6 one end, the other end of displacement sensor F6 connects 0V, this part is used for peeling room jacking cylinder down to detect, the input end X12 foot of PLC controller is connected with displacement sensor F7 one end, the other end of displacement sensor F7 connects 0V, this part is used for peeling room 1# brush cylinder to go out to detect, the input end X13 foot of PLC controller is connected with displacement sensor F8 one end, the other end of displacement sensor F8 connects 0V, this part is used for peeling room 1# brush cylinder to go back to detect, the input end X14 foot of PLC controller is connected with displacement sensor F9 one end, the other end of displacement sensor F9 connects 0V, this part is used for peeling room 2# brush cylinder to go out to detect, the input end X15 foot of PLC controller is connected with displacement sensor F10 one end, the other end of displacement sensor F10 connects 0V, this part is used for peeling room 2# brush.

As shown in fig. 11 and 12, the input end X16 of the PLC controller is connected to one end of a displacement sensor F11, the other end of the displacement sensor F11 is connected to 0V, which is used for detecting the opening of the door panel at the inlet of the painting room, the input end X17 of the PLC controller is connected to one end of a displacement sensor F12, the other end of the displacement sensor F12 is connected to 0V, which is used for detecting the closing of the door panel at the inlet of the painting room, the input end X20 of the PLC controller is connected to one end of a displacement sensor F13, the other end of the displacement sensor F13 is connected to 0V, which is used for detecting the opening of the door panel at the outlet of the painting room, the input end X21 of the PLC controller is connected to one end of a displacement sensor F14, the other end of the displacement sensor F14 is connected to 0V, which is used for detecting the closing of the door panel at the outlet of the painting room, the input end X, the input end X23 foot of PLC controller is connected with displacement sensor F16 one end, the other end of displacement sensor F16 connects 0V, this part is used for detecting under the jacking cylinder of spraying room, the input end X24 foot of PLC controller is connected with displacement sensor F17 one end, the other end of displacement sensor F17 connects 0V, this part is used for spraying room 1# telescopic cylinder to go out to detect, the input end X25 foot of PLC controller is connected with displacement sensor F18 one end, the other end of displacement sensor F18 connects 0V, this part is used for spraying room 1# telescopic cylinder to go back to detect, the input end X26 foot of PLC controller is connected with displacement sensor F19 one end, the other end of displacement sensor F19 connects 0V, this part is used for spraying room 2# telescopic cylinder to go out to detect, the input end X27 foot of PLC controller is connected with displacement sensor F20 one end, the other end of displacement sensor F20 connects 0V, this part is used for spraying room 2 #.

As shown in fig. 12, a pin X30 of an input end of the PLC controller is connected to one end of a proximity switch SQ2, the other end of the proximity switch SQ2 is connected to +24V and 0V, the other end of the proximity switch SQ2 is used for detecting the level of the coating liquid, a pin X31 of the input end of the PLC controller is used for controlling the operation of an induced draft fan of a peeling room, a pin X32 of the input end of the PLC controller is used for controlling the operation of a spray pump, a pin X33 of the input end of the PLC controller is used for controlling the operation of a reflux pump, a pin X34 of the input end of the PLC controller is connected to one end of a button SE1, the other end of a button 1 is connected to 0V, the other end of the button SE1 is used for controlling a start button, a pin X35 of the input end of the PLC controller is connected to one end of a button SE2, the other end of the button SE 2.

As shown in fig. 13, the output end Y0 pin of the PLC controller is used for pulse control of the carrier roller conveying stepping motor, the output end Y1 pin of the PLC controller is used for direction control of the carrier roller conveying stepping motor, the output end Y2 pin of the PLC controller is connected with one end of a coil of the relay KA01, the other end of a coil of the relay 01 is connected with +24V, the part is used for variable frequency high and low speed switching control of the # 1 brush motor, the output end Y3 pin of the PLC controller is connected with one end of a coil of the relay KA02, the other end of the coil of the relay KA02 is connected with +24V, the part is used for variable frequency starting control of the # 1 brush motor, the output end Y4 pin of the PLC controller is connected with one end of a coil of the relay KA03, the other end of the coil of the relay KA03 is connected with +24V, the part is used for variable frequency starting control of the # 2 brush motor, the part is used for the variable-frequency high-low speed switching control of the No. 2 brush motor.

The output end Y6 pin of the PLC controller is connected with one end of an electromagnetic valve YV1, the other end of the electromagnetic valve YV1 is connected with +24V, the part is used for controlling an inlet door plate cylinder of a peeling room, the output end Y7 pin of the PLC controller is connected with one end of an electromagnetic valve YV2, the other end of the electromagnetic valve YV2 is connected with +24V, the part is used for controlling an outlet door plate cylinder of the peeling room, the output end Y10 pin of the PLC controller is connected with one end of an electromagnetic valve YV3, the other end of the electromagnetic valve YV3 is connected with +24V, the part is used for controlling a jacking cylinder of the peeling room, the output end Y11 pin of the PLC controller is connected with one end of an electromagnetic valve YV4, the other end of the electromagnetic valve YV4 is connected with +24V, the part is used for controlling a 1# hairbrush cylinder of the peeling room, the output end Y12 pin of the PLC controller is connected with one end of an electromagnetic valve YV5, the other end of the electromagnetic valve YV6 is connected with +24V, the part is used for controlling an inlet door plate cylinder of a spraying room, the Y14 pin of the output end of the PLC controller is connected with one end of an electromagnetic valve YV7, the other end of the electromagnetic valve YV7 is connected with +24V, the part is used for controlling an outlet door plate cylinder of the spraying room, the Y15 pin of the output end of the PLC controller is connected with one end of an electromagnetic valve YV8, the other end of the electromagnetic valve YV8 is connected with +24V, the part is used for controlling a jacking cylinder of the spraying room, the Y16 pin of the output end of the PLC controller is connected with one end of an electromagnetic valve YV9, the other end of the electromagnetic valve YV9 is connected with +24V, the part is used for controlling a 1# telescopic cylinder of the spraying room, the Y17 pin of the output end of.

As shown in fig. 14, a pin Y20 of the output end of the PLC controller is connected to one end of a solenoid valve YV11, the other end of the solenoid valve YV11 is connected to +24V, this portion is used for controlling a solenoid valve of spray room # 1, a pin Y21 of the output end of the PLC controller is connected to one end of a solenoid valve YV12, the other end of the solenoid valve YV12 is connected to +24V, this portion is used for controlling a solenoid valve of spray room # 2, a pin Y22 of the output end of the PLC controller is connected to one end of a coil KA05 of a relay, the other end of a coil KA05 of the relay is connected to +24V, this portion is used for controlling a draught fan of a peeling room, a pin Y23 of the output end of the PLC controller is connected to one end of a coil KA06 of the relay, the other end of a coil KA06 of the relay is connected to +24V, this portion is used for controlling a spray room spray, the output end Y25 pin of the PLC controller is connected with one end of a relay KA08 coil, the other end of the relay KA08 coil is connected with +24V, the part is used for controlling the three-color lamp-red, the output end Y26 pin of the PLC controller is connected with one end of the relay KA09 coil, the other end of the relay KA09 coil is connected with +24V, the part is used for controlling the three-color lamp-green, the output end Y27 pin of the PLC controller is connected with one end of the relay KA10 coil, the other end of the relay KA10 coil is connected with +24V, and the part is used for controlling the three-color lamp-yellow.

The specific working process of the invention is as follows:

the steel billet 1 to be sprayed is firstly conveyed into a peeling room 2 through a carrier roller conveying line 4, and a split door panel 10 outside an inlet 6 and an outlet 7 of the peeling room is sealed; the cylinder at the bottom of the lifting block 11 extends out, the lifting block 11 rises, and the steel billet 1 is lifted up from the carrier roller conveying line 4 by the lifting block 11; the multi-shaft gear boxes 12 on two sides of the lifting block 11 move oppositely under the action of the air cylinders, two end parts of the steel billet 1 respectively enter the bearing cylinder 15, and when the multi-shaft gear boxes 12 move oppositely, a plurality of brush rollers 20 distributed circumferentially are distributed around the steel billet 1; the cylinder at the bottom of the lifting block 11 retracts, and the lifting block 11 descends; the brush motor 19 is started, the brush motor 19 realizes high-speed rotation of the brush roller 20 through gear transmission, the brush roller 20 completely removes attachments on the surface of the billet 1, no residues are left in the removing process, and an induced draft fan 21 guides generated scrap residues to a dust removal box 22 for treatment in the impurity removing process so as to ensure the cleanliness in the peeling room 2; after the surface of the steel billet 1 is subjected to impurity removal, the two multi-shaft gear boxes 12 move back to back, the steel billet 1 is conveyed to the carrier roller conveying line 4 by the lifting block 11, the door plates 10 outside the inlet 6 and the outlet 7 of the peeling room are opened, and the steel billet 1 is conveyed into the spraying room 3; the split door plates 10 outside the spraying room inlet 8 and the spraying room outlet 9 are sealed; the cylinder at the bottom of the lifting support plate 23 extends out, the lifting support plate 23 rises, and the lifting support plate 23 lifts the steel billet 1 from the carrier roller conveying line 4; the two paint distribution boxes 26 on the two sides of the lifting support plate 23 synchronously move in the opposite direction under the action of the air cylinder to drive the spray rods 27 and the atomizing nozzles 28 on the two sides to synchronously move in the opposite direction, the atomizing nozzles 28 are distributed around the steel billet 1, the surface of the steel billet 1 is sprayed during the movement of the atomizing nozzles 28, the two sides of the steel billet 1 are synchronously sprayed, the spraying efficiency is obviously improved, and the atomizing nozzles 28 can spray in a reciprocating manner under the action of the air cylinder to ensure the uniformity of the spraying thickness; during the spraying process of the steel billet 1, the return pump 36 pumps the redundant atomized coating generated in the spraying process to the coating storage tank 34 so as to be recycled; after the billet 1 is sprayed, the cylinder at the bottom of the lifting supporting plate 23 retracts, and the billet 1 is conveyed to the roller conveying line 4 again; and door plates 10 outside the spraying room inlet 8 and the spraying room outlet 9 are opened, and the sprayed billet 1 is conveyed out of the spraying room 3 and then enters the heating furnace.

The foregoing is illustrative of the best mode of the invention and details not described herein are within the common general knowledge of a person of ordinary skill in the art. The scope of the present invention is defined by the appended claims, and any equivalent modifications based on the technical teaching of the present invention are also within the scope of the present invention.

Claims

1. The automatic paint spraying equipment is characterized in that: the peeling and spraying combined machine comprises a peeling room (2) and a spraying room (3) which are arranged side by side, wherein two carrier roller conveying lines (4) which are arranged in parallel penetrate through the peeling room (2) and the spraying room (3), a lifting block (11) and a lifting supporting plate (23) are arranged between the two carrier roller conveying lines (4), the lifting block (11) is positioned at the bottom of an inner cavity of the peeling room (2), and the lifting supporting plate (23) is positioned at the bottom of the inner cavity of the spraying room (3);

the top of the lifting supporting plate (23) is provided with three lifting arms (24), the top of each lifting arm (24) is provided with an arc-shaped groove (25), and the arc-shaped grooves (25) are matched with the shape of the steel billet (1); the bottom of the lifting supporting plate (23) is connected with an air cylinder;

two sides of the lifting support plate (23) are respectively provided with a paint distribution box (26), the two paint distribution boxes (26) can move oppositely, and one side, close to the carrier roller conveying line (4), of each paint distribution box (26) is provided with a spray rod (27); one side of the coating diversion box (26) far away from the carrier roller conveying line (4) is provided with two telescopic pipes (29), the telescopic pipes (29) are communicated with the inner cavity of the coating diversion box (26), and the two telescopic pipes (29) are symmetrically arranged; one end of the telescopic pipe (29) is connected with one end of the coating material inlet pipe (30); the number of the coating inlet pipes (30) is two, and the two coating inlet pipes (30) are provided with spraying electromagnetic valves (31); one end of the coating inlet pipe (30) is connected with two discharge ports of the diverter valve (32), the feed port of the diverter valve (32) is connected with the outlet of the coating storage tank (34) through a pipeline, and a spraying pump (33) is arranged on the pipeline.

2. An automatic paint spraying apparatus as claimed in claim 1, wherein: the two sides of the lifting block (11) are respectively provided with a multi-shaft gear box (12), the two multi-shaft gear boxes (12) can move in opposite directions, three bearing cylinders (15) are mounted inside the multi-shaft gear boxes (12), driven gear sets (16) are arranged around the bearing cylinders (15), each driven gear set (16) comprises a plurality of driven gears which are distributed circumferentially, adjacent driven gears are meshed, the driven gears are connected with brush rollers (20), and the brush rollers (20) are located on one side, close to the carrier roller conveying line (4), of the multi-shaft gear boxes (12);

the bottoms of the multi-shaft gear box (12) and the coating diversion box (26) are fixedly connected with sliding blocks (13), the sliding blocks (13) are respectively in sliding connection with linear sliding rails (14), and the linear sliding rails (14) are arranged at the bottoms of the inner cavities of the peeling room (2) and the spraying room (3); the outer part of the sliding block (13) is respectively connected with a piston rod of the air cylinder.

3. An automatic paint spraying apparatus as claimed in claim 2, wherein: the bearing cylinder body (15) consists of a cylinder and a conical cylinder, the conical cylinder is positioned on one side, close to the carrier roller conveying line (4), of the multi-shaft gear box (12), and the cylinder is positioned on one side, far away from the carrier roller conveying line (4), of the multi-shaft gear box (12); the inner end of the cylinder is fixedly connected with the small-diameter end of the conical cylinder, and the end face of the large-diameter end of the conical cylinder is flush with the outer wall surface of the multi-shaft gear box (12); the outer end face of the cylinder is flush with the outer wall face of the multi-shaft gear box (12); the inner diameter of the cylinder is larger than the diameter of the billet (1);

the driven gear sets (16) are driven by the driving gears (17), the number of the driving gears (17) is three, the driving gears (17) are located above each driven gear set (16), and the driving gears (17) are respectively meshed with the uppermost driven gear in the driven gear sets (16); the adjacent driving gears (17) are connected through a transmission chain (18), the middle driving gear (17) is connected with an output shaft of a brush motor (19), and the brush motor (19) is fixedly connected to the outer wall surface of the multi-shaft gear box (12).

4. An automatic paint spraying apparatus as claimed in claim 1, wherein: three groups of spray rods (27) are arranged on one side, close to the carrier roller conveying line (4), of the coating distribution box (26), the spray rods (27) are all horizontally arranged, each group of spray rods (27) comprises three spray rods (27) distributed in an equilateral triangle shape, and atomizing nozzles (28) are arranged at the end parts of the spray rods (27);

the carrier roller conveying lines (4) are arranged along the width direction of the peeling room (2) and the spraying room (3), the two carrier roller conveying lines (4) are respectively driven by a stepping motor (5), the stepping motor (5) is positioned on the outer side of the conveying initial end of the carrier roller conveying lines (4), and the two stepping motors (5) are symmetrically arranged;

the inner cavity of the peeling room (2) is communicated with a dust removal box (22) through a pipeline, and an induced draft fan (21) is arranged on the pipeline; the inner cavity of the spraying room (3) is communicated with the inner cavity of the coating storage tank (34) through a recovery pipe (35), and a return pump (36) is installed on the pipeline.

5. An automatic paint spraying apparatus as claimed in claim 1, wherein: a peeling room inlet (6) is formed in one side, close to the conveying initial end of the carrier roller conveying line (4), of the peeling room (2), and a peeling room outlet (7) is formed in one side, far away from the conveying initial end of the carrier roller conveying line (4), of the peeling room (2); a spraying room inlet (8) is formed in one side, close to the conveying initial end of the carrier roller conveying line (4), of the spraying room (3), and a spraying room outlet (9) is formed in one side, far away from the conveying initial end of the carrier roller conveying line (4), of the spraying room (3); a roller conveying line (4) penetrates through the peeling room inlet (6), the peeling room outlet (7), the spraying room inlet (8) and the spraying room outlet (9); the outer sides of the peeling room inlet (6), the peeling room outlet (7), the spraying room inlet (8) and the spraying room outlet (9) are respectively provided with split door plates (10); the door plate (10) is respectively connected with a piston rod of the air cylinder.

6. A control system of an automatic paint spraying apparatus according to any one of claims 1 to 5, characterized in that: the PLC control system comprises a main control module, a driving module and a PLC module, wherein the PLC module comprises a PLC controller, and the model of the PLC controller is FX3U-64 MT;

the main control module comprises a 380V three-phase power supply R line, an S line, a T line and an N line, the 380V three-phase power supply R line, the S line, the T line and the N line are connected with one end of a circuit breaker QF1, and the other end of the circuit breaker QF1 is connected with an L1 line, an L2 line, an L3 line and the N line of the three-phase power supply;

7. The control system of an automatic paint spraying apparatus according to claim 6, wherein: the driving module comprises a frequency converter Q1, the FWD pin of the frequency converter Q1 is connected with one end of a relay KA01 switch, the other end of the relay KA01 switch is connected with the COM pin of the frequency converter Q1, the DI1 pin of the frequency converter Q1 is connected with one end of a relay KA02 switch, the other end of the relay KA02 switch is connected with the COM pin of the frequency converter Q1, the TA pin of the frequency converter Q1 is connected with the input end X02 pin of a PLC controller, the TC pin of the frequency converter Q1 is connected with 0V, the R pin, the S pin and the T pin of the frequency converter Q1 are connected with the L1 line, the L2 line and the L3 line of a three-phase power supply, and the U pin, the V pin, the W pin and the TE pin of the frequency converter Q1 are connected with a motor;

8. The control system of an automatic paint spraying apparatus according to claim 6, wherein: the input end X04 pin of the PLC controller is connected with one end of a displacement sensor F1, the other end of the displacement sensor F1 is connected with 0V, the part is used for detecting the opening of an inlet door plate of a peeling room, the input end X05 pin of the PLC controller is connected with one end of a displacement sensor F2, the other end of the displacement sensor F2 is connected with 0V, the part is used for detecting the closing of the inlet door plate of the peeling room, the input end X06 pin of the PLC controller is connected with one end of a displacement sensor F3, the other end of a displacement sensor F3 is connected with 0V, the part is used for detecting the opening of an outlet door plate of the peeling room, the input end X07 pin of the PLC controller is connected with one end of a displacement sensor F4, the other end of a displacement sensor F4 is connected with 0V, the part is used for detecting the closing of the outlet door plate of the peeling room, the input end X737, the input end X11 pin of the PLC is connected with one end of a displacement sensor F6, the other end of the displacement sensor F6 is connected with 0V, the part is used for detecting under a jacking cylinder of a peeling room, the input end X12 pin of the PLC is connected with one end of a displacement sensor F7, the other end of the displacement sensor F7 is connected with 0V, the part is used for detecting the output of a 1# hairbrush cylinder of the peeling room, the input end X13 pin of the PLC is connected with one end of a displacement sensor F8, the other end of a displacement sensor F8 is connected with 0V, the part is used for detecting the return of the 1# hairbrush cylinder of the peeling room, the input end X14 pin of the PLC is connected with one end of a displacement sensor F9, the other end of a displacement sensor F9 is connected with 0V, the part is used for detecting the output of a 2# hairbrush cylinder of the peeling room, the input end X15 pin of the PLC is connected with;

9. The control system of an automatic paint spraying apparatus according to claim 6, wherein: an input end X00 pin of the PLC is connected with one end of a proximity switch SQ1, the other end of the proximity switch SQ1 is connected with +24V and 0V, the detection is performed on the carrier roller conveying stepping motor, an input end X01 pin is used for warning of the carrier roller conveying stepping motor, an input end X02 pin is used for warning of a No. 1 brush motor, and an input end X03 pin is used for warning of a No. 2 brush motor; the input end X30 pin of the PLC is connected with one end of a proximity switch SQ2, the other end of the proximity switch SQ2 is connected with +24V and 0V, the other end of the proximity switch SQ2 is used for detecting the liquid level of the coating liquid, the input end X31 pin of the PLC is used for controlling the operation of an induced draft fan of a peeling room, the input end X32 pin of the PLC is used for controlling the operation of a spraying pump, the input end X33 pin of the PLC is used for controlling the operation of a reflux pump, the input end X34 pin of the PLC is connected with one end of a button SE1, the other end of the button SE1 is connected with 0V, the other end of the button SE1 is used for controlling a starting button, the input end X35 pin of the PLC is connected with one end of a button SE2, the other end of the button SE2 is connected with 0V, the other end of the button SE 3.

10. The control system of an automatic paint spraying apparatus according to claim 6, wherein: the output end Y0 pin of the PLC is used for pulse control of a carrier roller conveying stepping motor, the output end Y1 pin of the PLC is used for direction control of the carrier roller conveying stepping motor, the output end Y2 pin of the PLC is connected with one end of a coil of a relay KA01, the other end of the coil of the relay KA01 is connected with +24V, the part is used for variable-frequency high-low speed switching control of a No. 1 brush motor, the output end Y3 pin of the PLC is connected with one end of a coil of a relay KA02, the other end of the coil of the relay KA02 is connected with +24V, the part is used for variable-frequency high-low speed switching control of the No. 1 brush motor, the output end Y4 pin of the PLC is connected with one end of a coil of a relay KA03, the other end of the coil of the relay KA02 is connected with +24V, the part is used for variable-frequency starting control of a No. 2 brush motor, the output end Y5 pin of the PLC;