CN114705252A

CN114705252A - Detection equipment applied to measurement of buoy inflation device

Info

Publication number: CN114705252A
Application number: CN202210510244.9A
Authority: CN
Inventors: 骆可政; 骆瑞君; 周展望
Original assignee: 715th Research Institute of CSIC
Current assignee: 715th Research Institute of CSIC
Priority date: 2022-05-11
Filing date: 2022-05-11
Publication date: 2022-07-05

Abstract

The invention discloses detection equipment applied to measurement of a buoy inflation device, which comprises a box body, wherein a detection area is arranged on one side of the box body, a feeding and discharging platform is arranged in the detection area, the bottom of the feeding and discharging platform is fixedly connected with the box body through a rotating mechanism, a clamp for an object to be detected for fixing the buoy inflation device is arranged on the feeding and discharging platform, an image acquisition mechanism and a lever jacking mechanism are respectively arranged on the left side and the right side of the detection area in a matched mode on two sides of the buoy inflation device, a resistance test probe assembly is arranged on the top of the detection area in a matched mode on a resistance test point of the buoy inflation device, a distance measuring device is arranged on the rear portion of the detection area in a matched mode on the buoy inflation device, and the rotating mechanism, the image acquisition mechanism, the lever jacking mechanism and the resistance test probe assembly are all matched with a PC end upper computer through a controller.

Description

Detection equipment applied to measurement of buoy inflation device

Technical Field

The invention belongs to the technical field of production quality detection of an inflation device, and particularly relates to detection equipment applied to measurement of a buoy inflation device.

Background

During the production and assembly of the buoy inflator, a loop is necessary for the quality detection of the inflator. The existing detection means must be manually checked by a special inspector, and the detection means is divided into three detection items: firstly, the gap of an opening at the front end of the inflating device is between 2.1mm and 2.7mm, the gap of a lever at the rear end of the inflating device is between 0.1mm and 2mm, which is judged by a special inspector through a plug gauge, the gap is formed after the special inspector deforms by manually pressing the lever, whether the deformation is generated or is too large or cannot be deformed is observed by naked eyes, the resistance value of a circuit board at the top of the inflating device is between 3.5 omega and 4.5 omega, and the contact test point of a test pen is tested by the special inspector through a low resistance tester, and is judged by the display value of the tester.

Because each buoy needs an air charging device, the demand of the air charging device is large according to the yield estimation of the buoy; in the actual production process, assembly personnel often inform a quality department to check after producing more than one hundred inflatable devices, and then arrange special inspection personnel to carry out inspection one by the quality department, wherein in the process, the special inspection personnel have time conflict caused by the need of inspecting other workpieces, so that the rear-end production is stopped; in the links of notification, planning, arrangement, inspection and recording, certain negative effects are often brought to the production efficiency, and certain errors are inevitably introduced due to the fact that the inspection process depends on the quality of the product judged by people, so that rework of subsequent work and instability of the product quality are caused.

Disclosure of Invention

The invention discloses an automatic device applied to quality inspection of an inflating device in a buoy, aiming at improving the quality consistency of the inflating device in the buoy and avoiding the stagnation of workshop production takt and replacing the manual inspection of special inspectors.

In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a be applied to buoy aerating device measuring check out test set, includes the box, and the check out test set has been seted up to box one side, check out test set is equipped with and goes up the unloading platform, go up the bottom of unloading platform and pass through slewing mechanism and box fixed connection, it is equipped with the determinand anchor clamps that are used for fixed buoy aerating device to go up to be equipped with on the unloading platform, the left and right sides of check out test set cooperates respectively the buoy aerating device both sides are equipped with image acquisition mechanism and lever climbing mechanism, the cooperation of check out test set's top the resistance test point of buoy aerating device is equipped with resistance test probe assembly, the rear portion cooperation of check out test set the buoy aerating device is equipped with range unit, slewing mechanism, image acquisition mechanism, lever climbing mechanism, resistance test probe assembly all hold the cooperation of host computer through a controller and PC.

Further, the rotating mechanism is a 57 stepping motor.

Further, image acquisition mechanism includes industry camera, light source controller, annular light source and POE power module, the annular light source cover is established on the industry camera, the industry camera carries out image acquisition to aerating device tip opening gap to transmit image data to PC through the gigabit net twine and carry out machine vision through POE power module and handle, light source controller and PC end host computer link to each other through RS232 serial port line, and annular light source's bright going out is controlled to the downlink mode of accessible instruction. The light source controller is connected with the PC end upper computer through an RS232 serial port line.

Furthermore, the lever jacking mechanism consists of a first electric cylinder and a jacking block.

Furthermore, the resistance test probe assembly comprises a second electric cylinder, a low resistance tester and a spring probe, wherein the second electric cylinder is fixed on the wall of the box body, the low resistance tester is fixed inside the box body, and the spring probe is fixed on a probe mounting plate of the resistance tester.

Further, still be equipped with motor drive board in the box, export two sets of high-low level signals to motor drive board through the controller, can control the flexible of first electric jar and second electric jar.

Furthermore, the distance measuring device is a laser distance measuring sensor, the laser distance measuring sensor obtains analog output which linearly changes along with the distance, analog signals are converted into digital signals transmitted according to a protocol format through an analog-to-digital conversion transmitter, the laser distance measuring sensor is connected with the PC end upper computer through an RS485 bus through the PC end upper computer, the PC end upper computer receives the digital signals, and the actually measured distance is analyzed through a protocol.

Further, the controller is Siemens S7-200 PLC.

Further, the motor driving board is an L298N motor driving board.

In conclusion, the automation equipment is formed by reasonably using the PLC, the stepping motor, the laser ranging sensor, the analog-to-digital conversion transmitter, the low-resistance tester, the U-shaped groove photoelectric switch, the industrial camera, the light source controller and the light source and using an upper computer compiled based on Labview as a man-machine interaction and control center; the invention can complete the detection of the opening gap at the front end of the inflating device, the detection of the opening gap of the lever at the rear end and the measurement of the resistance value at the top, and form a test report; the equipment can optimize the quality consistency of the air charging device in the buoy and replace the manual inspection of special inspection personnel, thereby avoiding the stagnation of workshop production.

Drawings

FIG. 1 is a flow chart of a conventional testing method.

FIG. 2 is a flow chart of the testing method of the present invention.

FIG. 3 is a diagram of a task framework of the upper computer software.

FIG. 4 is a schematic structural diagram of the detecting apparatus of the present invention.

FIG. 5 is a schematic diagram of the internal structure of the detecting device of the present invention.

In the figure: 1. the device comprises a box body, 2, a feeding and discharging platform, 4, 57 stepping motors, 3, a clamp for an object to be measured, 5, an industrial camera, 50, an annular light source, 6, a first electric cylinder, 60, a jacking block, 7, a second electric cylinder, 70, a spring probe, 8 and a laser ranging sensor.

Detailed Description

As shown in fig. 1-5, a detection apparatus for measuring a buoy inflator is a device for inflating a buoy, and includes a box 1, a detection area is disposed on one side of the box 1, a feeding platform 2 is disposed on the detection area, the bottom of the feeding platform 2 is fixedly connected to the box 1 through a 57-step motor 4, a U-shaped groove photoelectric switch is disposed on the feeding platform 2 for positioning an initial position of a rotating platform, an object to be tested clamp 3 for fixing the buoy inflator is disposed on the feeding platform 2, an image acquisition mechanism and a lever jacking mechanism are disposed on the left and right sides of the detection area respectively matching with the two sides of the buoy inflator, and a resistance test probe assembly is disposed on the top of the detection area matching with a resistance test point of the buoy inflator, the rear part of the detection area is matched with the buoy inflation device to be provided with a distance measuring device, the rotating mechanism, the image acquisition mechanism, the lever jacking mechanism and the resistance test probe assembly are matched with a PC end upper computer through a Siemens S7-200 PLC, the Siemens S7-200 PLC can output high pulses and level signals to a driver of a 57 stepping motor, and the 57 stepping motor is controlled through the Siemens S7-200 PLC, so that stable forward and reverse rotation of the feeding and discharging platform 2 is achieved, and the rotation speed and the rotation position of the motor can be controlled.

Specifically, image acquisition mechanism includes industrial camera 5, light source controller, annular light source 50 and POE power module, 50 covers of annular light source establish on industrial camera 5, industrial camera 5 carries out image acquisition to aerating device tip opening clearance to carry out machine vision through POE power module with image data through kilomega network cable transmission to PC end host computer and handle, light source controller and PC end host computer link to each other through RS232 serial port line, and the bright of the descending mode control annular light source 50 of accessible instruction goes out.

Specifically, the lever jacking mechanism consists of a first electric cylinder 6 and a jacking block 60, and is used for forming a gap after pressure is generated on a lever in the inflating device, and finally measuring the deformation amount through a distance measuring device, so that the measurement of the opening gap of the lever is achieved.

Specifically, resistance test probe subassembly includes second electricity jar 7, low resistance tester and spring probe 70, second electricity jar 7 is fixed on 1 wall of box, the low resistance tester is fixed on 1 inside of box, spring probe 70 is fixed in on the probe mounting panel of resistance tester, the low resistance tester passes through RS232 serial port line with the PC end host computer and links to each other, and after second electricity jar 7 drove the motion of spring probe 70 and made it contact with aerating device resistance test point, alright measure the resistance value through the low resistance tester, pass through RS232 serial port line with the test data and reach PC end host computer and judge afterwards. The inflating device comprises an air bottle, a bottle bundling piece, a spring and a bottle bundling piece, wherein the bottle bundling piece is used for puncturing the air bottle, the end, far away from the bottle bundling end, of the bottle bundling piece is connected with one end of the spring, the spring is provided with a nylon rope in a matching manner, and the nylon rope is used for compressing the spring to deform the spring; the nylon rope is spirally wound with a nickel-chromium alloy wire, the resistance value of the alloy wire is measured by using a resistance test probe, the nylon rope is burnt off by electrifying the alloy wire to generate heat and releasing the elasticity of the spring based on the measured resistance value and combining with the resistance heating principle, so that the gas cylinder is punctured by the bottle puncturing piece to achieve the inflation effect.

Specifically, an L298N motor driving plate is further arranged in the box body 1, two sets of high and low level signals are output to the L298N motor driving plate through a Siemens S7-200 PLC, and the expansion and contraction of the first electric cylinder 6 and the second electric cylinder 7 can be controlled.

Specifically, the distance measuring device is a laser distance measuring sensor 8, the laser distance measuring sensor 8 obtains analog output which linearly changes along with the distance, analog signals are converted into digital signals transmitted according to a protocol format through an analog-to-digital conversion transmitter, the laser distance measuring sensor 8 is connected with the PC end upper computer through an RS485 bus, the PC end upper computer receives the digital signals, and the actually measured distance is analyzed through a protocol.

Specifically, the matching box body 1 is further provided with a power supply module, and the power supply module adopts a 24V bright weft switch power supply and a 12V bright weft switch power supply to supply power for all components, mechanisms and modules in the box body.

Specifically, the upper part of the front end of the box body 1 is provided with a front panel, a PC end upper computer is used as a 'center' of the equipment to play the roles of flow control, data processing and result storage in the whole detection process, and the tasks are specifically divided into 5 tasks to be realized, namely a front panel event task, a serial port instruction task, an image processing task, a result judgment task and a data storage task, wherein after the equipment is started, the PC end upper computer automatically starts and runs upper computer software, a user can click an 'initial position' button on the front panel through touch to reset all mechanisms to an initial position and wait for the start of detection, and then after the user places an inflating device on the clamp 3 to be detected, the triggering of the whole detection process is realized by clicking a 'start test' button on the front panel through touch, the PC end upper computer gives a controller through a downlink serial port instruction to control the rotary platform to rotate for 180 degrees, the industrial camera 5 transmits the acquired image to a PC end upper computer, a front panel displays the image in real time, the PC end upper computer starts an image processing task to measure the distance between the front end openings, and the PC end upper computer transmits a downlink serial port instruction to a controller to control the extension of the first electric cylinder 6 and the second electric cylinder 7, so that the spring probe 70 is in contact with a measured point, and the rear end lever of the inflating device is deformed; then the PC end upper computer analyzes the resistance value through the serial port data which is uplink from the low resistance tester, and compares the serial port data which is uplink from the analog-to-digital conversion transmitter before and after deformation to obtain the deformation quantity, wherein the deformation quantity is the opening gap of the lever at the rear end of the inflating device; so far, the three test indexes are all obtained, and the PC end upper computer realizes the operations of closing the annular light source 50 and retracting the first electric cylinder 6 and the second electric cylinder 7 through corresponding serial port instructions.

And finally, displaying the three test indexes on a front panel, and after self judgment of software, clearly knowing whether the quality of the current tested inflator reaches the standard or not through word patterns of 'PASS' and 'NG', if the three indexes are 'PASS', the quality of the detected inflator is qualified, executing a data storage task by an upper computer, storing the test data in an EXCEL file form to a specified directory, and if 'NG' occurs, judging that the quality is unqualified, and not executing the data storage task by the PC-side upper computer.

The implementation mode is as follows:

1) the equipment is connected to a 220V power supply, starts the equipment and runs PC end upper computer software.

2) Click PC end host computer "initial position" button, afterwards, unloading platform 2 will anticlockwise rotate and rotate to U type groove photoelectric switch limit position on the equipment, meanwhile, first electric jar 6 and the withdrawal of second electric jar 7.

3) The to-be-tested air charging device is placed on the to-be-tested object clamp 3 of the feeding and discharging platform 2, then, a 'start test' button of a PC end upper computer is clicked, after the button is pressed, the feeding and discharging platform 2 rotates 180 degrees, and the to-be-tested air charging device is placed in a detection area.

Then, the equipment automatically detects according to the following process that a PC end upper computer opens a light source instruction, the annular light source 50 is opened, the PC end upper computer displays an image acquired by the industrial camera 5, an image processing task calculates a front end opening gap M, the PC end upper computer requests a laser sensor 8 to obtain a current value L1, the PC end upper computer sends a descending first electric cylinder 6 and a descending second electric cylinder 7 extending instruction to the controller, the controller controls the first electric cylinder 6 and the second electric cylinder 7 to extend in place, the PC end upper computer requests a resistance value, a resistance value R is analyzed according to a communication protocol, the PC end upper computer requests the laser sensor 8 to obtain a current value L2 → calculates a lever gap L = L2-L1, the PC end upper computer sends a descending light source closing instruction, the annular light source 50 is closed, the PC end upper computer sends a descending first electric cylinder 6 and a descending second electric cylinder 7 retracting instruction to the controller, and the controller controls the first electric cylinder 6 and the second electric cylinder 7 to retract in place, and the judged and measured M, R, L, if M, R, L is qualified, the PC upper computer displays PASS characters behind the corresponding test items and automatically stores the test results, and if not, displays NG characters and does not store the test results.

So far, wait for the user to put into on the thing anchor clamps 3 that await measuring again with new aerating device that awaits measuring, after the user clicks "begin the test" button again, go up unloading platform 2 and rotate 180 and rotate the aerating device that has originally been detected to the equipment outside, the user can classify it according to just test result.

The image processing task of the PC-side upper computer comprises the following specific processes of gray processing, template matching, new coordinate system creation, edge extraction, edge ranging and real coordinate system unit transformation of an acquired image.

Claims

1. The utility model provides a be applied to buoy aerating device measuring check out test set which characterized in that: including box (1), the detection area has been seted up to box (1) one side, the detection area is equipped with goes up unloading platform (2), the bottom of going up unloading platform (2) is through slewing mechanism and box (1) fixed connection, be equipped with on going up unloading platform (2) and be used for fixed buoy aerating device's determinand anchor clamps (3), the left and right sides of detection area cooperates respectively buoy aerating device both sides are equipped with image acquisition mechanism and lever climbing mechanism, the top cooperation of detection area buoy aerating device's resistance test point is equipped with resistance test probe subassembly, the rear portion cooperation of detection area buoy aerating device is equipped with range unit, slewing mechanism, image acquisition mechanism, lever climbing mechanism, resistance test probe subassembly all hold host computer cooperation through a controller and PC.

2. The detection device applied to the measurement of the buoy inflation device as claimed in claim 1, wherein: the rotating mechanism is a 57 stepping motor (4).

3. The detection device applied to the measurement of the buoy inflation device as claimed in claim 1, wherein: image acquisition mechanism includes industry camera (5), light source controller, annular light source (50) and POE power module, annular light source (50) cover is established on industry camera (5), industry camera (5) carry out image acquisition to buoy aerating device tip opening gap to carry out machine vision through POE power module with image data through kilomega network cable transmission to PC end host computer and handle, light source controller and PC end host computer link to each other through RS232 serial port line, and the bright of the descending mode control annular light source of accessible instruction (50) goes out.

4. The detection device applied to the measurement of the buoy inflation device as claimed in claim 1, wherein: the lever jacking mechanism comprises a first electric cylinder (6) and a jacking block (60).

5. The detection device applied to the measurement of the buoy inflation device as claimed in claim 4, wherein: the resistance test probe assembly comprises a second electric cylinder (7), a low-resistance tester and a spring probe (70), the second electric cylinder (7) is fixed on the wall of the box body (1), the low-resistance tester is fixed on the inner part of the box body (1), the spring probe (70) is fixed on a probe mounting plate of the resistance tester, and the low-resistance tester is connected with a PC end upper computer through an RS232 serial port line.

6. The detection device applied to the measurement of the buoy inflation device as claimed in claim 5, wherein: still be equipped with motor drive board in box (1), export two sets of high-low level signals to motor drive board through the controller, can control the flexible of first electric jar (6) and second electric jar (7).

7. The detection device applied to the measurement of the buoy inflation device according to claim 1, wherein: the distance measuring device is a laser distance measuring sensor (8), the laser distance measuring sensor (8) obtains analog output which linearly changes along with the distance, analog signals are converted into digital signals transmitted according to a protocol format through an analog-to-digital conversion transmitter, the laser distance measuring sensor (8) is connected with the PC end upper computer through an RS485 bus, the PC end upper computer receives the digital signals, and the actually measured distance is analyzed through a protocol.

8. The detection device applied to the measurement of the buoy inflation device as claimed in claim 1, wherein: the controller is Siemens S7-200 PLC.

9. The detection device applied to the measurement of the buoy inflation device as claimed in claim 6, wherein: the motor driving plate is an L298N motor driving plate.