CN210347020U - Automatic equipment for detecting air tightness performance of plastic flange - Google Patents
Automatic equipment for detecting air tightness performance of plastic flange Download PDFInfo
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- CN210347020U CN210347020U CN201920851169.6U CN201920851169U CN210347020U CN 210347020 U CN210347020 U CN 210347020U CN 201920851169 U CN201920851169 U CN 201920851169U CN 210347020 U CN210347020 U CN 210347020U
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Abstract
The utility model belongs to the technical field of sealing detection equipment, and discloses automation equipment for detecting the air tightness performance of a plastic flange, which is provided with a bracket; the lower die cavity is fixedly arranged in the middle of the bracket; the upper die cavity is sleeved at the upper end of the lower die cavity; the side cylinder pressing component is clamped outside the upper die cavity; the top cylinder pressing assembly is clamped at the top of the upper die cavity; the ATEQ airtight tester is electrically connected with the side cylinder pressing component and the top cylinder pressing component respectively. Two-station detection is adopted, wherein 1-station detection is performed simultaneously, and 2-station detection can perform feeding and press-fitting procedures, so that the feeding and press-fitting time is reduced; the leakage amount is tested by adopting a differential pressure method and depending on the pressure difference value generated by the standard tank and the test tank, and compared with the traditional soaking bubble method, the method has the advantages that the intuitiveness and the data visualization are increased. Install safe light curtain protection device additional, in the work, if personnel's health any position mistake gets into the operation region, the system will carry out the action that resets, furthest ensures personal safety.
Description
Technical Field
The utility model belongs to the technical field of sealed check out test set, especially, relate to an automation equipment that airtight performance of plastic flange detected.
Background
Currently, the current state of the art commonly used in the industry is such that:
1. the water immersion method or surface spraying method is characterized in that a tested object is inflated in a visual inspection mode and then placed in certain liquid, the common liquid is water, or soapy water is coated on the tested object, and an operator judges whether the tested object leaks or not according to air bubbles on the visual inspection liquid.
2. And (3) direct pressure type detection, namely directly measuring the pressure change of the measured object by using a pressure gauge, a U-shaped pipe or a pressure sensor after the measured object is inflated in a pressure maintaining mode, and further calculating the pressure difference value of the measured object.
The flange component consists of a flange body and an inserting piece; during actual detection, the flange assembly is fixed in the lower die cavity, the top cylinder is pressed downwards, the flange assembly is sealed absolutely by the sealing ring, and the leakage amount of the flange body is detected by using an ATEQ precision leakage tester and adopting a differential pressure method.
When the manual detection is carried out, the product is completely placed in water manually, and whether bubbles are generated in the product or not is observed by means of a water immersion bubble method, so that whether air leakage occurs or not is judged.
During manual production: 1. the operator works for a long time and is inevitably distracted, so that tiny leakage of the product is difficult to monitor, and complaints of customers and even OEMs (original equipment manufacturer) whole factories are caused. 2. The actual leakage value of the product cannot be accurately obtained, and the quantification of the leakage data is not facilitated. 3. A large amount of accumulated water exists on the surface and the inner hole of the product after detection, drying treatment is needed, and additional working procedures are added.
In summary, the problems of the prior art are as follows:
(1) when the manual production is carried out, an operator works for a long time, and the phenomenon of inattention is inevitable, so that the tiny leakage of the product is difficult to monitor.
(2) The actual leakage value of the product cannot be accurately obtained, and the quantification of the leakage data is not facilitated.
(3) A large amount of accumulated water exists on the surface and the inner hole of the product after detection, drying treatment is needed, and additional working procedures are added.
The difficulty in solving the technical problems is as follows:
1. the water immersion method or the surface spraying method mainly depends on the judgment of operators, the specific leakage amount of a measured object is difficult to measure quantitatively, and the test environment and the self state of the operator also have great influence on the test result.
2. Although the direct pressure type measurement can overcome the defect of water detection, the direct pressure type measurement has a large error due to the influence of the sensor manufacturing technology. The accuracy of the sensors is calibrated with the whole measuring range, which means that the accuracy of the two sensors is consistent, and the absolute error is larger when the total measuring range is larger. For some workpieces, such as automobile brake pumps, engine cylinder heads and other workpieces, the detection pressure can even reach megapascals, and then the error can reach kilopascals or even dozens of kilopascals, so that the large error cannot meet the design requirement.
The significance of solving the technical problems is as follows: with the acceleration of the production process, the requirement for the quality of products is higher and higher, and the technology of the air tightness detector serving as air tightness general detection equipment is also continuously innovated. A leap from the original approach to the scientific detection is experienced. The most primitive method of inspection is water inspection, also known as the blistering method, where a workpiece is placed in water and is observed for bubbles to determine if there is a leak. In order to solve the above problems, the airtight detector has come to work, and the quality of the workpiece is determined by detecting the change value of the pressure and comparing the change value with the determination limit. It uses air as medium, and has no pollution to workpiece. Meanwhile, the leakage value can be accurately obtained, and the product quality is effectively improved. Meanwhile, the device is widely used by manufacturers by virtue of the characteristics of simple operation, high efficiency and the like, and a workpiece is sealed and fixed by a tool clamp, which is called as a detection end; the detection end is filled with gas with certain pressure, after balancing for a period of time, the test is carried out, if the workpiece has leakage, the pressure is reduced, and the method is also called direct pressure type detection. This approach can overcome the disadvantages of water detection, but is subject to large errors due to sensor manufacturing techniques. The accuracy of the sensors is calibrated with the whole measuring range, which means that the accuracy of the two sensors is always the same, and the larger the total measuring range is, the larger the absolute error is. For some workpieces, such as automobile brake pumps, engine cylinder heads and other workpieces, the detection pressure can even reach megapascals, so the error can reach kilopascals or even dozens of kilopascals, and the large error can not meet the requirements of dozens of requirements. Therefore, in combination with the measurement principle of the balance, a differential pressure type airtightness detector has appeared.
SUMMERY OF THE UTILITY MODEL
Problem to prior art existence, the utility model provides an automation equipment that plastic flange air tightness performance detected, the airtight leak detector of differential pressure type has a reference volume (do not have the leakage) certainly in the system, and is another volume by the detecting system, when aerifing them simultaneously, their pressure is unanimous, after static a period, if the work piece has the pressure drop that leaks then by the detecting system, detects the pressure differential at both ends through differential pressure sensor. Because the pressure difference is smaller when the leakage is small, the micro-range sensor with high precision can be adopted for measurement. The resolution and precision of the instrument are greatly improved due to the great reduction of the total measuring range. .
The utility model is realized in such a way that the automatic device for detecting the air tightness performance of the plastic flange is provided with a bracket;
the lower die cavity is fixedly arranged in the middle of the bracket;
the upper die cavity is sleeved at the upper end of the lower die cavity;
the side cylinder pressing component is clamped outside the upper die cavity;
the top cylinder pressing component is clamped at the top of the upper die cavity;
and the ATEQ airtight tester is electrically connected with the side cylinder pressing component and the top cylinder pressing component respectively.
Further, the outside fixed mounting of support has the safety light curtain, the safety light curtain is connected with the three-colour alarm lamp electricity.
Furthermore, the control end of the automation equipment for detecting the air tightness performance of the plastic flange is connected with a double-start button, and the power supply end of the automation equipment for detecting the air tightness performance of the plastic flange is connected with an emergency stop button in series.
Further, the top fixed mounting of support has the light, the lower extreme welding of support is installed waste material circulation passageway.
In summary, the advantages and positive effects of the invention are:
1. the method comprises the following steps of (1) adopting two-station detection, manually placing a product to be detected to a station A, pressing a start button of the station A with two hands, pressing a cylinder to press a flange surface of the product, plugging the cylinder to plug the product, and starting an air tightness detector to perform leakage detection after a magnetic switch detects that the cylinder acts in place; when the station detection is carried out, a product to be detected is manually placed on the station B, the station B starting button is pressed by two hands, the station B pressing cylinder presses the flange surface of the product, the station B blocks the product, the station B is in a waiting state after the magnetic switch detects that the cylinder acts in place, the system is automatically switched to the station B for detection through the electromagnetic valve after the station A detection is finished, the operation is repeated, the feeding and press-fitting time is reduced, and the working efficiency is improved;
2. the leakage amount is tested by adopting a differential pressure method according to the pressure difference generated by the standard tank and the test tank, and compared with the traditional immersion bubble method, the method has the advantages that the intuitiveness and the data visualization are increased;
3. a safety light curtain protection device is additionally arranged, and when the system works, if any part of the body of a person enters an operation area by mistake, the system executes a reset action, so that the personal safety is guaranteed to the maximum extent;
4. install waste material outflow channel additional, if the defective work has not passed through the circulation, then the system triggers PLC not to carry out the secondary and detects the process.
Drawings
Fig. 1 is a schematic structural diagram of an automation equipment for detecting air tightness of plastic flanges provided by the embodiment of the present invention.
Fig. 2 is a working principle diagram of the differential pressure method provided by the embodiment of the present invention.
In the figure: 1. a lower die cavity; 2. an upper mold cavity; 3. the side cylinder presses the assembly down; 4. a top cylinder hold-down assembly; 5. a safety light curtain; 6. a three-color alarm lamp; 7. an ATEQ air tightness tester; 8. a display screen; 9. an illuminating lamp; 10. a dual start button; 11. an emergency stop button; 12. a waste material circulation channel.
Detailed Description
In order to further understand the contents, features and effects of the present invention, the following embodiments are illustrated and described in detail with reference to the accompanying drawings.
1. Manually placing the flange assembly in a lower die cavity 1, sealing the lower die cavity 1 by using an O-shaped ring, and positioning the appearance
2. The double-start button 10 is started by two hands, so that safety accidents caused by single-hand operation are prevented;
3. after the button is started, the PLC triggers the electromagnetic valve to ventilate the top cylinder pressing component 4, and the pressing station of the top cylinder pressing component 4 drives the upper die cavity 2 to press downwards, so that the flange component is in absolute sealing;
4. after the top cylinder pressing component 4 is pressed down in place, the PLC triggers the electromagnetic valve to ventilate the side cylinder pressing component 3, and the side cylinder pressing component 3 extends out to drive the air plugging device to plug the top air port of the flange component;
5. depending on an external stable gas source, the ATEQ airtight tester 7 judges whether the flange assembly meets the airtight parameter requirement through a differential pressure method;
the safety light curtain 5 is additionally arranged, if any part of the body of a person enters an operation area by mistake, the system executes reset action, and the personal safety is guaranteed to the maximum extent; the safety light curtain 5 is electrically connected with the three-color alarm lamp 6, and after the safety light curtain 5 detects a signal, the function of alarming is realized through the three-color alarm lamp 6. The top fixed mounting of support has light 9, realizes the function of illumination.
The working principle of the differential pressure method is shown in fig. 2, the differential pressure detection method obtains the leakage rate of the workpiece to be detected by detecting the differential pressure between the standard container and the workpiece to be detected, and compressed air enters a cavity of the workpiece to be detected and a cavity of the standard container at two ends of the differential pressure sensor through the valve 2 and the valve 3 simultaneously to form a closed balanced cavity. If the standard chamber is leak-free, a pressure differential will be created between the two sealed chambers when the workpiece under test has a leak. The change in pressure differential may reflect the magnitude of the leak.
6. After detection is finished, the PLC triggers the electromagnetic valve, and the side cylinder pressing component 3 and the top cylinder pressing component 4 drive the corresponding components to return to the original positions;
7. according to the detection data, if the qualified product is qualified, the qualified product is manually flowed to the next procedure, and the equipment enters the secondary detection procedure again and again;
8. if the waste is unqualified, the waste is manually flowed into the waste recycling box through the waste circulation channel 12, and the responsible equipment cannot start the next process.
Cylinder control and in-place detection: the double-start button 10 is manually pressed, a PLC control system sends a signal to a magnetic switch at the upper part of a pressing cylinder through an electromagnetic valve, the pressing cylinder executes a pressing action, after the pressing action is in place, the magnetism at the lower part of the pressing cylinder receives the signal and feeds the signal back to the PLC, the PLC triggers a magnetic switch at the rear part of a plugging cylinder through the electromagnetic valve to execute a plugging action, after the plugging cylinder is in place, a front magnetic switch receives the signal and feeds the signal back to the PLC, and the PLC sends a signal to an air-tightness detector to start to execute air-. The power supply end of the automation equipment for detecting the air tightness performance of the plastic flange is connected with an emergency stop button 11 in series, and the machine is stopped through the emergency stop button 11 in case of emergency.
The display screen 8 has the functions and functions:
1. the action sequence of each cylinder is intuitively reflected;
2. the manual touch button can execute switching between the first program and the second program;
3. the device has a counting function, and the number of qualified parts and unqualified parts produced on the shift can be directly displayed;
4. the device has an exception handling function, and when a person mistakenly touches a light curtain or emergently stops the device during operation, the reset function can be executed through a reset key of the display screen 8.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all the modifications and equivalents of the technical spirit of the present invention to any simple modifications of the above embodiments are within the scope of the technical solution of the present invention.
Claims (4)
1. The automation equipment for detecting the air tightness of the plastic flange is characterized in that the automation equipment for detecting the air tightness of the plastic flange is provided with a support;
the lower die cavity is fixedly arranged in the middle of the bracket;
the upper die cavity is sleeved at the upper end of the lower die cavity;
the side cylinder pressing component is clamped outside the upper die cavity;
the top cylinder pressing component is clamped at the top of the upper die cavity;
and the ATEQ airtight tester is electrically connected with the side cylinder pressing component and the top cylinder pressing component respectively.
2. An automatic device for detecting the air tightness of a plastic flange as claimed in claim 1, wherein a safety light curtain is fixedly installed at the outer side of the bracket, and the safety light curtain is electrically connected with a three-color alarm lamp.
3. The automation device for detecting the air tightness of the plastic flange as claimed in claim 1, wherein the control terminal of the automation device for detecting the air tightness of the plastic flange is connected with a double start button, and the power terminal of the automation device for detecting the air tightness of the plastic flange is connected with an emergency stop button in series.
4. The automatic equipment for detecting the air tightness of the plastic flange as claimed in claim 1, wherein an illuminating lamp is fixedly installed at the top of the bracket, and a waste material circulation channel is welded and installed at the lower end of the bracket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920851169.6U CN210347020U (en) | 2019-06-06 | 2019-06-06 | Automatic equipment for detecting air tightness performance of plastic flange |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920851169.6U CN210347020U (en) | 2019-06-06 | 2019-06-06 | Automatic equipment for detecting air tightness performance of plastic flange |
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| CN210347020U true CN210347020U (en) | 2020-04-17 |
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| CN201920851169.6U Active CN210347020U (en) | 2019-06-06 | 2019-06-06 | Automatic equipment for detecting air tightness performance of plastic flange |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113218594A (en) * | 2021-03-25 | 2021-08-06 | 中国电子科技集团公司第三十八研究所 | Differential pressure type air tightness online detection mechanism |
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2019
- 2019-06-06 CN CN201920851169.6U patent/CN210347020U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113218594A (en) * | 2021-03-25 | 2021-08-06 | 中国电子科技集团公司第三十八研究所 | Differential pressure type air tightness online detection mechanism |
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