CN202752148U - Collision prevention device of electrically operated gate of large-size spray booth - Google Patents

Abstract

The utility model discloses a collision prevention device of an electrically operated gate of a large-size spray booth. The collision prevention device of the electrically operated gate of the large-size spray booth comprises a central processing unit (CPU), a power module, an input module and an output module, wherein the input module and the output module are connected with the CPU, the power module provides electricity for the input module and the output module, the input module comprises a gate opening in-place optoelectronic switch, a workpiece entering detection optoelectronic switch, a stopper workpiece occupation optoelectronic switch, a workpiece passing stopper detection optoelectronic switch, a gate opening in-place travel switch, a gate closing in-place travel switch and a system starting switch, and the output module comprises a stopper opening electromagnetic valve, a gate opening contactor, a gate closing contactor, a conveying contactor and an audible and visual alarm. According to the collision prevention device of the electrically operated gate of the large-size spray booth, an optoelectronic switch sensor is additionally provided, the control program is modified correspondingly, false operation caused by damage of the switches is prevented, and the situations that emergency shut down and alarm information is given out due to the fact that a workpiece rushes through a stopper due to improper reasons is avoided.

Description

The anticollision device, collision-prevention device of large-scale paint spray booth Electrically operated gate

Technical field

The utility model relates to the surface spraying production line, is specifically related to the electric anti-collision protection device for large-scale paint spray booth Electrically operated gate.

Background technology

The paint spray booth generally all is provided with Electrically operated gate in import and export in order to guarantee the not random little negative pressure in diffusion and the paint spray booth of coating cloud.When workpiece enters the paint spray booth, need to open first the Qianmen, after a unlatching put in place, induction system was transported to workpiece in the paint spray booth.Spray paint after the end, open at the back door of paint spray booth, and induction system is transported to the outdoor next process that carries out with workpiece.

Traditional Anti-bumping protection way is finished by automatic control system (PLC).The workpiece wait of before entering, stopping first, PLC sends the instruction of need to entering, and this moment, system opened the Qianmen automatically, after a unlatching puts in place, by the travel switch that puts in place the information of putting in place is sent to the PLC input, PLC opens stopper after receiving information, the induction system motion is transported to workpiece indoor.The process that goes out paint spray booth's door is identical therewith.

It is substantially no problem that this system's list is said from the logic control angle.But in the actual moving process because a variety of causes, such as: 1, travel switch damages, the switch contact adhesion, cause door reach a signal mistake be given to the PLC input (actual do not open to the doorstep or fully unlatching put in place); 2, electrical network ripple coefficient in workshop is high, and interference is arranged, and moment is reached the pulse signal of position to door of PLC sometimes; 3, stopper damages, and induction system is not stopped and directly bumped against on the door.PLC can open stopper after receiving above-mentioned the 1st kind or the 2nd kind of error message, and this moment, the conveying of workpiece was carried out in the induction system action, because door does not cause workpiece directly to install to the damage that door causes the gate reaching a state, and causes production line to stop the line accident.

The utility model content

For the problems referred to above, the applicant provides the anticollision device, collision-prevention device of a kind of large-scale paint spray booth Electrically operated gate through Improvement, avoid because certain switch damages the misoperation that causes, and the situation that workpiece is broken through stopper owing to improper reason occurs.

The technical solution of the utility model is as follows:

The anticollision device, collision-prevention device of a kind of large-scale paint spray booth Electrically operated gate comprises CPU, power module, input module and output module, and input module is connected with CPU with output module, and power module is input module and output module power supply; Described input module comprises that door reaches an optoelectronic switch, workpiece and enters and detect optoelectronic switch, stopper workpiece occupy-place optoelectronic switch, workpiece and cross stopper and detect optoelectronic switch, door and reach a travel switch, Men Guan put in place travel switch and system power-on switch; Described output module comprises that stopper is opened magnetic valve, the contactor that opens the door, the contactor of closing the door, carry contactor and audible-visual annunciator.

Useful technique effect of the present utility model is:

The utility model has increased the optoelectronic switch sensor and control program has been done corresponding modify, one of them optoelectronic switch is contained in door and reaches a position, reach the position of reaching that a travel switch detects Electrically operated gate jointly with former door, avoid because switch damages the misoperation that causes.Another optoelectronic switch is contained in the stopper back and detects workpiece, sends signal when workpiece is broken through stopper owing to improper reason, to realize emergency shutdown and to send warning message.

Description of drawings

Fig. 1 is block diagram of the present utility model.

Fig. 2 is electrical schematic diagram of the present utility model.

Fig. 3 is the electrical schematic diagram of relevant distribution system.

The specific embodiment

Below in conjunction with accompanying drawing the specific embodiment of the present utility model is described further.

As shown in Figure 1, the utility model is comprised of CPU1, power module 2, input module 3, output module 4.Input module 3 is connected with CPU1 with output module 4, and power module 2 is input module 3 and output module 4 power supplies.Concrete electrical schematic diagram is referring to Fig. 2.

Below in conjunction with Fig. 2 operation principle of the present utility model is described:

1, under normal circumstances, system power-on switch SA1 connects, and system starts, and the induction system drive motors is often worked, and namely carries the normal adhesive of contactor KM3.Stopper is in closed condition at ordinary times.

Stopper is to control the safety and precise stand of workpiece in conveying circuit, be usually placed in the track switch place that workpiece hanging-convert place and conveying circuit change, mainly be the effect that safety is held up traffic, when preventing chassis because of inertia or the generation of other reason, cause the damage of system.

When 2, workpiece was transported to stopper by induction system, stopper was in closed condition, and workpiece stops at this.Stopper workpiece occupy-place optoelectronic switch GD3 detects workpiece information and sends to input module.CPU sends the instruction of opening the door, the contactor KM1 that opens the door action, and Electrically operated gate is opened.When door reached, door reached an optoelectronic switch GD1 and door and reaches a travel switch XC1 and move simultaneously and send information to input module, and Electrically operated gate stops action.Think after CPU judges through logic that workpiece can enter, the control stopper is opened motor-driven valve DF1 action, and stopper is opened, and workpiece is entered, and after workpiece entered the paint spray booth fully, workpiece was entered and detected optoelectronic switch GD2 and detect workpiece and send to input module.CPU sends the instruction of closing the door after logic is judged, the contactor KM2 that closes the door action, and Electrically operated gate is closed.When door is closed when putting in place, door closes and puts travel switch XC2 action in place and send information to input module, and after CPU judged through logic, the contactor KM2 that closes the door unclamped, and Electrically operated gate stops action.A process finishes, and enters next process.

3, the protection under the abnormal condition.

3.1, the door reach a travel switch XC1 or the door reach one of them damage of optoelectronic switch GD1, cause mistaking signal or in time do not send signal.CPU judges according to logic automatically, must two conditions satisfies simultaneously and just can carry out next step action, and any one switch damages and causes condition not satisfy, and the automatic guide sound light crossing-signal of CPU BJ1 sends warning message, prompting maintenance personal repair apparatus.

3.2, for the interfering signal misoperation, because interfering signal all is noise signal, signal wave crest reality is very short, detecting with oscillograph generally all is several milliseconds crest, therefore in program, all input signals are done 20 milliseconds filtering, be that arbitrary signal must keep being only useful signal more than 20 milliseconds, the signal that is lower than 20 milliseconds does not make a decision.

3.3, stopper damages, induction system is not stopped, workpiece is directly broken through stopper, workpiece was crossed stopper and was detected optoelectronic switch GD4 and detect signal and be sent to CPU this moment.Because the stopper opening signal is not sent in CPU inside, CPU can judge these two information automatically, when the stopper opening signal is not sent in CPU inside, when but workpiece is crossed stopper and is detected optoelectronic switch GD4 and detect signal, CPU thinks that stopper damages, automatically stop induction system (carrying contactor KM3 to unclamp), and guide sound light crossing-signal BJ1 sends warning message.

Fig. 3 is the electrical schematic diagram of the distribution system that matches with the utility model.Distribution system is comprised of door switch motor M 1, induction system drive motors M2, motor starter QA1, QA2 and contactor KM1, KM2, KM3.Wherein, contactor KM1, KM2, KM3 are the contactor in the utility model; Motor starter QA1, QA2 are used for power supply deciliter and motor overload protection, not controlled by the utility model.

The utility model is based on the control system of PLC, both can independently become system, also can be used as the slave station module and accesses whole job-shop automation control system.

Above-described only is preferred embodiment of the present utility model, and the utility model is not limited to above embodiment.Be appreciated that other improvement and variation that those skilled in the art directly derive or associate under the prerequisite that does not break away from spirit of the present utility model and design, all should think to be included within the protection domain of the present utility model.

Claims (1)

1. the anticollision device, collision-prevention device of a large-scale paint spray booth Electrically operated gate, it is characterized in that: comprise CPU(1), power module (2), input module (3) and output module (4), input module (3) and output module (4) and CPU(1) be connected, power module (2) is input module (3) and output module (4) power supply;

Described input module (3) comprises that door reaches an optoelectronic switch (GD1), workpiece and enters and detect optoelectronic switch (GD2), stopper workpiece occupy-place optoelectronic switch (GD3), workpiece and cross stopper and detect that optoelectronic switch (GD4), door reach a travel switch (XC1), door closes put in place travel switch (XC2) and system power-on switch (SA1);

Described output module (4) comprises that stopper opens magnetic valve (DF1), the contactor that opens the door (KM1), the contactor of closing the door (KM2), carries contactor (KM3) and audible-visual annunciator (BJ1).

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