CN115090557A - Full-automatic air tightness detection device and detection method for pipe connecting piece - Google Patents
Full-automatic air tightness detection device and detection method for pipe connecting piece Download PDFInfo
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- CN115090557A CN115090557A CN202210780200.8A CN202210780200A CN115090557A CN 115090557 A CN115090557 A CN 115090557A CN 202210780200 A CN202210780200 A CN 202210780200A CN 115090557 A CN115090557 A CN 115090557A
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- 238000001514 detection method Methods 0.000 title claims abstract description 135
- 239000000463 material Substances 0.000 claims abstract description 108
- 230000007246 mechanism Effects 0.000 claims abstract description 57
- 238000012546 transfer Methods 0.000 claims abstract description 37
- 238000003825 pressing Methods 0.000 claims abstract description 34
- 238000007599 discharging Methods 0.000 claims abstract description 29
- 239000012530 fluid Substances 0.000 claims description 37
- 210000000078 claw Anatomy 0.000 claims description 33
- 238000007789 sealing Methods 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 5
- 125000004122 cyclic group Chemical group 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 abstract 1
- 230000007547 defect Effects 0.000 description 4
- 230000002950 deficient Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000007689 inspection Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 244000208734 Pisonia aculeata Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/34—Sorting according to other particular properties
- B07C5/3404—Sorting according to other particular properties according to properties of containers or receptacles, e.g. rigidity, leaks, fill-level
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/02—Measures preceding sorting, e.g. arranging articles in a stream orientating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/36—Sorting apparatus characterised by the means used for distribution
- B07C5/361—Processing or control devices therefor, e.g. escort memory
- B07C5/362—Separating or distributor mechanisms
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/36—Sorting apparatus characterised by the means used for distribution
- B07C5/38—Collecting or arranging articles in groups
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Abstract
A full-automatic air tightness detection device of a pipe connecting piece and a detection method thereof comprise a workbench and an electric control device assembly; the pipe connector material swinging mechanism; an air tightness detection mechanism; a blanking channel; a transfer mechanism; the air tightness detection mechanism comprises a differential pressure transmitter with a first detection pipeline and a second detection pipeline, a first opening and closing ball valve, a material placing tool, a material pressing plug, a second opening and closing ball valve, a pressure sensor and a differential pressure sensor; the first opening and closing ball valve and the second opening and closing ball valve respectively comprise a valve body, a valve core, a valve rod, a control shaft for controlling the valve rod and an input gear sleeved on the control shaft; the gear transmission mechanism further comprises a switch control motor and an output gear sleeved on the switch control motor, wherein the output gear is meshed with the input gear. The full-automatic loading, detecting and discharging device realizes full-automatic loading, detecting and discharging functions, only the pipe connecting piece needs to be placed on the material tray manually (or can be replaced by a machine), the labor intensity of workers is greatly reduced, and the full-automatic loading, detecting and discharging device is suitable for being used for batch detection of manufacturers.
Description
Technical Field
The invention relates to the field of production test of pipe connectors, in particular to a full-automatic air tightness detection device and a detection method of pipe connectors.
Background
The pipe fitting is a part for connecting pipes into a pipeline, and plays roles in connection, control, turning, diversion, sealing, supporting and the like in a pipeline system. Common pipe fittings can be divided into a two-way pipe, a three-way pipe, a four-way pipe and the like according to pipeline branches, are generally divided into a straight-through pipe, a bent-through pipe and the like according to the direction of the pipe, are divided into a reducing pipe, a reducing elbow, a branch pipe table and the like for changing the pipe diameter of the pipe, and are used for fixing the pipe fittings with brackets, supports, snap rings and the like.
In order to ensure the air tightness and reliability of the pipe fitting, the air tightness detection is needed after the pipe fitting is machined, namely whether the pipe fitting has the defects of sand holes, weld cracks, insufficient welding and the like is detected, and the method is a necessary link for verifying whether the pipe fitting meets the standard requirements. The existing pipe fitting air tightness detection equipment is easy to shake or loosen in the detection process after the pipe fitting is inflated, so that the air leakage of the installed pipe fitting is caused, and the air tightness detection accuracy is influenced.
The most common existing air tightness detection device is used in a mode that a pipe connector is connected to the device and then is placed in a water environment, changes of the water environment are observed manually, and bubbles are generated continuously if leakage exists.
In order to overcome the defects of the technology, various solutions are proposed through continuous search, for example, the patent numbers are as follows: CN 201810606182.5's China authorized invention discloses a pipe fitting airtightness detection workbench, which comprises an inflation device, a high-pressure auxiliary tank, a detection device, a first pipe fitting airtightness pressurization positioning device and a second pipe fitting airtightness pressurization positioning device; the detection device is provided with a first air outlet pipe; the high-pressure auxiliary tank is connected with the inflating device through a second air inlet pipe; the high-pressure auxiliary tank is also provided with a second air outlet pipe, and the first air outlet pipe and the second air outlet pipe are communicated with the main air inlet pipe through a tee joint; the main air inlet pipe is connected with the first pipe fitting airtight pressurization positioning device, the other end of the first pipe fitting airtight pressurization positioning device is connected with a pipe fitting, the other end of the pipe fitting is connected with the second pipe fitting airtight pressurization positioning device, and the other end of the second pipe fitting airtight pressurization positioning device is connected with a main air outlet pipe.
In practical application, the above patent still has certain defects, such as: 1. the automatic material loading and unloading device does not have a full-automatic material loading and unloading function, and needs manual operation, so that the device is only suitable for a small amount of sampling inspection and is not suitable for batch inspection of manufacturers; 2. the position precision of the pipe connector is poor due to manual feeding and discharging, and the detection accuracy is further influenced; 3. the air leakage is judged by using the barometer, but the sensitivity of the barometer is poor, so that the measurement accuracy is poor, and the condition of micro leakage cannot be identified; 4. according to the disclosed scheme, the detection function can not be realized.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a full-automatic pipe connector air tightness detection device and a detection method thereof.
The technical scheme for solving the technical problem is as follows: a full-automatic gas tightness detection device of union piece includes:
the automatic feeding device comprises a workbench and an electric control device assembly, wherein the workbench is sequentially divided into a detection area, a feeding area and a discharging area from left to right;
the pipe joint piece swinging mechanism is arranged in the feeding area;
an air-tightness detection mechanism arranged in the detection area;
a blanking channel arranged in the blanking area;
the transfer mechanism spans above the detection area, the feeding area and the discharging area;
the air tightness detection mechanism comprises a differential pressure transmitter with a first detection pipeline and a second detection pipeline, a first opening-closing ball valve connected to one end of the first detection pipeline, a material placing tool connected to the other end of the first detection pipeline, a material pressing plug used for plugging one port of a pipe connector, a second opening-closing ball valve connected to one end of the second detection pipeline, and a pressure sensor connected to the other end of the second detection pipeline;
a differential pressure sensor is arranged between the first detection pipeline and the second detection pipeline;
the first opening and closing ball valve and the second opening and closing ball valve respectively comprise a valve body, a valve core positioned in the valve body, a valve rod connected with the valve core and at least partially extending out of the valve body, a control shaft used for controlling the valve rod, and an input gear sleeved on the control shaft;
the output gear is simultaneously meshed with the input gears in the first opening-closing ball valve and the second opening-closing ball valve.
The technical scheme is further set as follows: first detection pipeline and second detection pipeline mutual independence set up, differential pressure transmitter in including differential pressure sensor, differential pressure sensor be located first detection pipeline and second detection pipeline between.
In some embodiments of the present invention, the pipe joint swing mechanism includes a swing longitudinal linear motion module, a material tray placed on the swing longitudinal linear motion module, and a plurality of rows of material fixing columns arranged in parallel on the material tray.
The technical scheme is further set as follows: the material placing longitudinal linear motion module comprises a first longitudinal guide rail, a first longitudinal rack, a first longitudinal sliding seat, a material placing driving motor and a first driving gear, wherein the first longitudinal guide rail and the first longitudinal rack are fixed on a workbench, the first longitudinal sliding seat is slidably arranged on the first longitudinal guide rail, the material placing driving motor is fixed on a material tray, the first driving gear is sleeved on the material placing driving motor, the first driving gear is meshed with the first longitudinal rack, and the material tray is installed on the first longitudinal sliding seat.
In some embodiments of the present invention, the transfer mechanism includes a transverse support straddling the worktable, a transverse guide rail and a transverse rack fixed on the transverse support, a plurality of transverse sliding seats slidably disposed on the transverse guide rail, a first mounting plate fixed on the transverse sliding seats, a transfer driving motor acting on the first mounting plate, a second driving gear sleeved on the transfer driving motor and engaged with the transverse rack, a lifting cylinder disposed on the first mounting plate, a second mounting plate located below the first mounting plate and acted by the lifting cylinder, and a feeding pneumatic claw module and a discharging pneumatic claw module disposed in parallel transversely on the second mounting plate.
In some embodiments of the present invention, the air tightness detecting mechanism further includes a second longitudinal guide rail, a second longitudinal sliding seat slidably disposed on the second longitudinal guide rail, a movable bottom plate fixed on the second longitudinal sliding seat, and a longitudinal driving cylinder disposed on one side of the movable bottom plate and acting on the movable bottom plate;
differential pressure transmitter, put material frock, first switching ball valve and second switching ball valve and on-off control motor all install the removal bottom plate on.
One side of the movable bottom plate is also provided with a cylinder support, the cylinder support is provided with a down-pressing cylinder, and the pressing plug is installed on the down-pressing cylinder to move up and down.
In some embodiments of the present invention, the blanking channel includes a qualified product blanking channel and an unqualified product blanking channel, and the qualified product blanking channel and the unqualified product blanking channel are arranged at intervals in the left-right direction.
The technical scheme is further set as follows: the material placing tool comprises a base, a fluid inlet, a fluid outlet and a fluid channel, wherein the fluid inlet is formed in a straight end face on one side of the base;
the lower end of the base is provided with a waist-shaped adjusting hole;
the upper end of the base can be also detachably connected with a first fastening ring sheet to form a first material placing positioning groove; the lower end of the material pressing plug is detachably connected with a second fastening ring sheet to form a second material placing positioning groove;
the first material positioning groove is internally provided with a first sealing gasket, the second material positioning groove is internally provided with a second sealing gasket, and the fluid inlet is internally provided with a sealing ring.
The invention also provides a method for detecting the air tightness of the pipe connector, which is applied to the full-automatic air tightness detection device of the pipe connector and comprises the following steps:
s1, placing the pipe connectors to be detected on the charging tray in batches and in sequence by a worker;
s2, moving the transfer mechanism to the feeding area, and starting the feeding air claw module to clamp the pipe joint to be detected at the corresponding position on the material taking disc;
s3, pushing the material placing tool out to an opening position right below the transfer mechanism by a longitudinal driving cylinder, and transferring the clamped pipe joint part on the material placing tool in the detection area by the feeding air claw module;
s4, the longitudinal driving cylinder pulls the material placing tool back, the pressing cylinder is started to press the pressing plug into the pipe connector on the material placing tool, and the sealing of the upper and lower ports of the pipe connector is realized through the pressing plug and the sealing gasket;
s5, the first opening and closing ball valve and the second opening and closing ball valve are all externally connected with fluid pipelines, and a switch is started to control a motor to simultaneously open the first opening and closing ball valve and the second opening and closing ball valve, so that fluids in the externally connected fluid pipelines respectively enter the first detection pipeline and the second detection pipeline in a constant-speed and equal-quantity manner;
s6, controlling the input quantity of the fluid by observing the data fed back by the pressure sensor; meanwhile, whether the pipe connector in detection has a leakage problem or not is observed through data fed back by a differential pressure sensor in the differential pressure transmitter;
and S7, after the detection is finished, starting a pressing cylinder to lift the pressing plug, then longitudinally driving the cylinder to push the material placing tool out to an open position right below the transfer mechanism, starting a discharging air claw module to clamp the pipe connector detected on the material placing tool, moving the transfer mechanism to a discharging area, sending the pipe connector to one of a qualified product discharging channel and a unqualified product discharging channel according to the detection result, and then moving the transfer mechanism to the discharging area to start the cycle work of the next round of pipe connector detection.
The invention has the beneficial effects that:
the automatic pipe connecting device has the advantages that the full-automatic feeding, detecting and discharging functions are achieved, manual operation is only needed to place pipe connecting pieces on the material tray (mechanical replacement is also available), labor intensity of workers is greatly reduced, and the automatic pipe connecting device is suitable for being used for batch detection of manufacturers.
And manual feeding is replaced by mechanical feeding, so that the position consistency of the pipe connector is better, and the detection accuracy is further ensured.
Thirdly, through the double-circuit pipeline that detects, carry out contrast test, judge by pressure differential sensor whether leak, replace current one-way baroceptor, sensitivity when detecting promotes greatly, and the precision value is higher and can detect out the condition of little leaking.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a partial structural schematic diagram of the present invention.
Fig. 3 is an enlarged schematic view of a portion a in fig. 2.
Fig. 4 is an enlarged schematic view of a portion B in fig. 2.
Fig. 5 is a schematic structural view of the airtightness detection mechanism according to the present invention.
Fig. 6 is a schematic structural view of the material feeding tool in the air tightness detection mechanism when feeding and discharging are pushed out.
Fig. 7 is a schematic structural view of the material setting tool in the air tightness detection mechanism during pull-back detection.
Fig. 8 is a schematic structural view of the switch control motor and the first and second opening/closing ball valves.
Fig. 9 is a schematic view of the transfer mechanism in operation with the tray.
Fig. 10 is an exploded view of the material placing tool and the material pressing plug.
In the figure: 1. a work table; 2. detecting a region; 3. a feeding area; 4. a blanking area; 5. the pipe connector material swinging mechanism; 6. an air tightness detection mechanism; 7. a blanking channel; 8. a transfer mechanism; 9. a first detection conduit; 10. a second detection conduit; 11. a differential pressure transmitter; 12. a first opening and closing ball valve; 13. a material placing tool; 14. pressing a material plug; 15. a second opening and closing ball valve; 16. a pressure sensor; 17. a valve body; 18. a control shaft; 19. an input gear; 20. the switch controls the motor; 21. an output gear; 22. a material tray; 23. a material fixing column; 24. a first longitudinal rail; 25. a first longitudinal rack; 26. a first longitudinal sliding seat; 27. a material placing driving motor; 28. a first drive gear; 29. a transverse support; 30. a transverse guide rail; 31. a transverse rack; 32. a transverse sliding seat; 33. a first mounting plate; 34. a transfer drive motor; 35. a second drive gear; 36. a lifting cylinder; 37. a second mounting plate; 38. a feeding gas claw module; 39. a blanking gas claw module; 40. a gap; 41. a second longitudinal rail; 42. a second longitudinal sliding seat; 43. moving the base plate; 44. a longitudinal driving cylinder; 45. a cylinder support; 46. pressing down the air cylinder; 47. a qualified product discharging channel; 48. a defective product discharging channel; 49. a base; 50. a flat end face; 51. a fluid inlet; 52. a fluid outlet; 53. a fluid channel; 54. a waist-shaped adjusting hole; 55. a first fastening ring segment; 56. a first material placing positioning groove; 57. a second fastening ring; 58. a second material placing positioning groove; 59. a first gasket; 60. a seal ring; 61. a second gasket; 62. a position sensor.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 10, a full-automatic airtightness detection apparatus for pipe joints, includes:
the device comprises a workbench 1 and an electric control device assembly, wherein the workbench 1 is sequentially divided into a detection area 2, a feeding area 3 and a discharging area 4 from left to right;
a pipe joint swing mechanism 5 arranged in the feeding area 3;
an air-tightness detecting mechanism 6 provided in the detection region 2;
a blanking channel 7 arranged in said blanking zone 4;
a transfer mechanism 8 spanning over the detection area 2, the feeding area 3 and the discharging area 4;
the air tightness detection mechanism 6 comprises a differential pressure transmitter 11 with a first detection pipeline 9 and a second detection pipeline 10, a first opening and closing ball valve 12 connected to one end of the first detection pipeline 9, a material placing tool 13 connected to the other end of the first detection pipeline 9, a material pressing plug 14 used for plugging one port of a pipe connector, a second opening and closing ball valve 15 connected to one end of the second detection pipeline 10, and a pressure sensor 16 connected to the other end of the second detection pipeline 10;
a differential pressure sensor is arranged between the first detection pipeline 9 and the second detection pipeline 10;
the first opening and closing ball valve 12 and the second opening and closing ball valve 15 respectively comprise a valve body 17, a valve core positioned in the valve body 17, a valve rod connected with the valve core and at least partially extending out of the valve body 17, a control shaft 18 for controlling the valve rod, and an input gear 19 sleeved on the control shaft 18;
the device also comprises a switch control motor 20 and an output gear 21 sleeved on an output shaft of the switch control motor 20, wherein the output gear 21 is meshed with the input gear 19 in the first opening-closing ball valve 12 and the second opening-closing ball valve 15 simultaneously.
In the above, the simple structure inside differential pressure transmitter 11 is: first detection pipeline 9 and second detection pipeline 10 mutual independence set up, differential pressure transmitter 11 in including differential pressure sensor, differential pressure sensor be located first detection pipeline 9 and second detection pipeline 10 between.
The above content is the basic scheme of the present invention, and the detection working principle is as follows: the pipe joint to be detected is placed in the air tightness detection device provided by the invention according to requirements, and the first opening and closing ball valve 12 and the second opening and closing ball valve 15 are synchronously opened through the switch control motor 20 during detection, so that fluid enters the first detection pipeline 9 and the second detection pipeline 10 at equal speed and equal quantity. Wherein, the second detection pipeline 10 is not connected with a pipe connector and is used as a reference test data set for comparison; the first detection pipeline 9 is communicated with the pipe connector and used for detecting the air tightness of the pipe connector. When the pipe connector has no leakage, the pressure values in the first detection channel and the second detection channel should be the same, and theoretically, the data fed back by the differential pressure sensor is 0; when the pipe joint has leakage, the pressure values in the first detection channel and the second detection channel should be different, the data fed back by the differential pressure sensor is not 0, and the larger the absolute value of the fed back value is, the more serious the leakage is.
In some embodiments of the present invention, the pipe joint swinging mechanism 5 is preferably: referring to fig. 3, the device comprises a material placing longitudinal linear motion module, a material tray 22 placed on the material placing longitudinal linear motion module, and a plurality of rows of material fixing columns 23 arranged in parallel on the material tray 22. More specifically, the material placing longitudinal linear motion module comprises a first longitudinal guide rail 24 and a first longitudinal rack 25 fixed on the workbench 1, a plurality of first longitudinal sliding seats 26 slidably arranged on the first longitudinal guide rail 24, a material placing driving motor 27 fixed on the material tray 22, and a first driving gear 28 sleeved on the material placing driving motor 27, wherein the first driving gear 28 is meshed with the first longitudinal rack 25, and the material tray 22 is installed on the first longitudinal sliding seat 26.
In some embodiments of the present invention, the transfer mechanism 8 is preferably: referring to fig. 4, the pneumatic lifting device comprises a transverse bracket 29 straddling the workbench 1, a transverse guide rail 30 and a transverse rack 31 fixed on the transverse bracket 29, a plurality of transverse sliding seats 32 slidably arranged on the transverse guide rail 30, a first mounting plate 33 fixed on the transverse sliding seats 32, a transfer driving motor 34 acting on the first mounting plate 33, a second driving gear 35 sleeved on the transfer driving motor 34 and meshed with the transverse rack 31, a lifting cylinder 36 arranged on the first mounting plate 33, a second mounting plate 37 positioned below the first mounting plate 33 and acted by the lifting cylinder 36, and a feeding air claw module 38 and a discharging air claw module 39 transversely arranged in parallel on the second mounting plate 37.
The feeding air claw module 38 and the discharging air claw module 39 have a large structural size, and therefore feeding and discharging are affected. Specifically, limited by the structural interference, it is generally necessary to set the row spacing between adjacent material fixing columns 23 on the material tray 22 to be larger for the feeding air claw module 38 and the discharging air claw module 39 to pass through, which results in a smaller number of pipe connectors placed on a single material tray 22, and increases the feeding times of workers, resulting in a decrease in production efficiency.
In order to eliminate the above drawbacks, a more specific embodiment of the pipe joint swinging mechanism 5 and the transferring mechanism 8 is as follows: referring to fig. 9, the material fixing column 23 has a plurality of rows and is divided into an operating row and a non-operating row, and the operating row and the non-operating row are arranged at intervals; the feeding air claw module 38 and the discharging air claw module 39 are respectively provided with 2 groups, a gap 40 is formed between the adjacent feeding air claw module 38/discharging air claw module 39, and the gap 40 is over against the fixed material column 23 of the non-working row. For example, there are 4 fixed material groups on the tray 22, the 1 st and 3 rd rows constitute a working row, when the loading gas claw module 38/unloading gas claw module 39 works, the pipe connectors on the 1 st and 3 rd rows are first grabbed and detected, and at this time, the 2 nd and 4 th rows serve as a gap 40 (non-working row) so that the loading gas claw module 38/unloading gas claw module 39 can normally pass through; similarly, after the pipe connectors on the 1 st row and the 3 rd row are completely detected, the tray 22 is moved to enable the 2 nd row and the 4 th row to form a working row, when the feeding air claw module 38/the discharging air claw module 39 works, the pipe connectors on the 2 nd row and the 4 th row are firstly grabbed and detected, and at the moment, the 1 st row and the 3 rd row serve as a gap 40 (non-working row) so that the feeding air claw module 38/the discharging air claw module 39 can normally pass through.
In some embodiments of the present invention, the air tightness detecting mechanism 6 is preferably: referring to fig. 5 to 7, the device further includes a second longitudinal guide rail 41, a second longitudinal sliding base 42 slidably disposed on the second longitudinal guide rail 41, a movable base plate 43 fixed to the second longitudinal sliding base 42, and a longitudinal driving cylinder 44 disposed on one side of the movable base plate 43 and acting on the movable base plate 43. The installation mode of relevant parts is as follows: the differential pressure transmitter 11, the material placing tool 13, the first opening and closing ball valve 12, the second opening and closing ball valve 15 and the switch control motor 20 are all installed on the movable bottom plate 43. An air cylinder support 45 is further arranged on one side of the movable bottom plate 43, a downward pressing air cylinder 46 is arranged on the air cylinder support 45, and the material pressing plug 14 is installed on the downward pressing air cylinder 46 to move up and down.
In a preferred embodiment of the air tightness detecting mechanism 6, the pressing plug 14 can move up and down, and on one hand, the height can be adjusted to meet the detection requirements of different products; on the other hand, when the pipe connector is vertically arranged on the material placing tool 13, a space is left, and the vertical movement of products can be realized more quickly and smoothly. In addition, the material placing tool 13 can be moved to the position right below the transfer mechanism 8 through the action of the longitudinal driving air cylinder 44 on the moving bottom plate 43, so that the transfer mechanism 8 can rapidly clamp and place the pipe joint.
In some embodiments of the present invention, the blanking channel 7 includes a non-defective product blanking channel 47 and a defective product blanking channel 48 for receiving the passing pipe connectors and the failing pipe connectors, respectively. And the qualified product blanking channel 47 and the unqualified product blanking channel 48 are arranged at intervals along the left and right directions so as to adapt to the moving direction of the transfer mechanism 8, thereby improving the blanking efficiency.
In the prior art, a very reliable material placing tool 13 is not disclosed, and generally, a pipe connector is horizontally placed and is directly in butt joint with and communicated with a first detection pipeline 9, so that after repeated disassembly and assembly, leakage is easy to occur at the joint between the pipe connector and the first detection pipeline 9, and meanwhile, the stability of fluid is relatively poor when the fluid enters, and the detection accuracy is also influenced.
In some embodiments of the present invention, a preferred scheme is provided, specifically: referring to fig. 10, the material placing tool 13 includes a base 49, a fluid inlet 51 opened on a straight end surface 50 of one side of the base 49, a fluid outlet 52 opened on an upper end of the base 49, and a fluid passage 53 disposed inside the base 49 and connecting the fluid inlet 51 and the fluid outlet 52. By adopting the technical scheme, firstly, the pipe connector is placed on the material placing tool 13 in a vertical posture to adapt to the gravity direction for detection; secondly, forming a fluid channel 53 in the material placing tool 13, and forming a transition section between the first detection pipeline 9 and the pipe connector, so that the fluid is more smooth, and the detection data is more stable and accurate; moreover, first detection pipeline 9 and material placing tool 13 need not to dismantle after the installation for the first time, can effectively guarantee the leakproofness of junction.
Further, a waist-shaped adjusting hole 54 is formed at the lower end of the base 49. Depending on the size of the pipe connector to be tested, the operator moves the connector (typically a screw) through the adjustment hole 54 to achieve a better fit.
The technical scheme is further set as follows: the upper end of the base 49 can be detachably connected with a first fastening ring piece 55 to form a first material placing positioning groove 56; the lower end of the swaging plug 14 is detachably connected with a second fastening ring piece 57 to form a second material placing positioning groove 58; the first material placing positioning groove 56 is internally provided with a first sealing gasket 59, the second material placing positioning groove 58 is internally provided with a second sealing gasket 61, and the fluid inlet 51 is internally provided with a sealing ring 60. On one hand, the first fastening ring piece 55 and the second fastening ring piece 57 can be detached and replaced, so as to form a first material placing positioning groove 56 and a second material placing positioning groove 58 with different sizes and specifications, so as to adapt to the detection requirements of different pipe connectors; on the other hand, through the arrangement of the first sealing gasket 59, the second sealing gasket 61 and the sealing ring 60, the sealing performance of the relevant connecting links is ensured, so that the detection result is more accurate.
In the invention, in order to enable the pipe joint swinging mechanism 5, the air tightness detection mechanism 6, the transfer mechanism 8 and the like to operate more accurately in place, the position sensors 62 are arranged in a one-to-one correspondence manner, and the electric control device is in electric communication with the position sensors 62 to feed back data in real time and issue opening and closing instructions.
The invention also provides a method for detecting the air tightness of the pipe connector, which is applied to the full-automatic air tightness detection device of the pipe connector and comprises the following steps:
s1, placing the pipe connectors to be detected on the charging tray 22 in batches and in sequence by a worker;
s2, moving the transfer mechanism 8 to the feeding area 3, and starting the feeding air claw module 38 to clamp the pipe joint to be detected at the corresponding position on the charging tray 22;
s3, the longitudinal driving cylinder 44 pushes the material placing tool 13 out to an open position right below the transfer mechanism 8, and the feeding air claw module 38 transfers and places the clamped pipe joint piece on the material placing tool 13 in the detection area 2;
s4, the longitudinal driving cylinder 44 pulls the material placing tool 13 back, the pressing cylinder 46 is started to press the pressing plug 14 into the pipe connector on the material placing tool 13, and the sealing of the upper and lower ports of the pipe connector is realized through the pressing plug 14 and the sealing gasket;
s5, the first opening-closing ball valve 12 and the second opening-closing ball valve 15 are externally connected with fluid pipelines, and the opening-closing control motor 20 is started to simultaneously open the first opening-closing ball valve 12 and the second opening-closing ball valve 15, so that fluids in the externally connected fluid pipelines respectively enter the first detection pipeline 9 and the second detection pipeline 10 at equal speed and equal quantity;
s6, controlling the input of the fluid by observing the data fed back by the pressure sensor 16; meanwhile, whether the pipe connector in detection has a leakage problem or not is observed through data fed back by a differential pressure sensor in the differential pressure transmitter 11;
s7, after the detection is finished, the pressing air cylinder 46 is started to lift the pressing plug 14, then the air cylinder 44 is driven longitudinally to push the material placing tool 13 out to an open position right below the transfer mechanism 8, the blanking air claw module 39 is started to clamp the detected pipe connector on the material placing tool 13, the transfer mechanism 8 moves to the blanking area 4, the pipe connector is sent to one of the qualified product blanking channel 47 and the unqualified product blanking channel 48 according to the detection result, and then the transfer mechanism 8 moves to the blanking area 3 to start the next round of pipe connector detection cycle.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all simple modifications, changes and equivalent structural changes made to the above embodiment according to the technical spirit of the present invention still fall within the protection scope of the technical solution of the present invention.
Claims (10)
1. The utility model provides a full-automatic gas tightness detection device of union piece which characterized in that includes:
the automatic feeding device comprises a workbench (1) and an electric control device assembly, wherein the workbench (1) is sequentially divided into a detection area (2), a feeding area (3) and a discharging area (4) from left to right;
the pipe joint swing mechanism (5) is arranged in the feeding area (3);
an air-tightness detection mechanism (6) arranged in the detection area (2);
a blanking channel (7) arranged in the blanking region (4);
a transfer mechanism (8) which spans over the detection area (2), the feeding area (3) and the discharging area (4);
the air tightness detection mechanism (6) comprises a differential pressure transmitter (11) with a first detection pipeline (9) and a second detection pipeline (10), a first opening and closing ball valve (12) connected to one end of the first detection pipeline (9), a material placing tool (13) connected to the other end of the first detection pipeline (9), a material pressing plug (14) used for plugging one port of a pipe connector, a second opening and closing ball valve (15) connected to one end of the second detection pipeline (10), and a pressure sensor (16) connected to the other end of the second detection pipeline (10);
a differential pressure sensor is arranged between the first detection pipeline (9) and the second detection pipeline (10);
the first opening and closing ball valve (12) and the second opening and closing ball valve (15) respectively comprise a valve body (17), a valve core positioned in the valve body (17), a valve rod connected with the valve core and at least partially extending out of the valve body (17), a control shaft (18) used for controlling the valve rod, and an input gear (19) sleeved on the control shaft (18);
the automatic opening and closing device is characterized by further comprising an opening and closing control motor (20) and an output gear (21) sleeved on an output shaft of the opening and closing control motor (20), wherein the output gear (21) is meshed with input gears (19) in the first opening and closing ball valve (12) and the second opening and closing ball valve (15) at the same time.
2. The pipe joint member automatic air-tightness detecting device according to claim 1, wherein: first detection pipeline (9) and second detection pipeline (10) mutual independence set up, differential pressure transmitter (11) in including differential pressure sensor, differential pressure sensor be located first detection pipeline (9) and second detection pipeline (10) between.
3. The pipe joint member automatic air-tightness detecting device according to claim 1, wherein: the pipe connecting piece material swinging mechanism (5) comprises a material swinging longitudinal linear motion module, a material tray (22) placed on the material swinging longitudinal linear motion module, and a plurality of rows of material fixing columns (23) which are arranged on the material tray (22) in parallel.
4. The pipe joint member automatic air-tightness detecting device according to claim 3, wherein: the pendulum material vertical linear motion module including fix first longitudinal rail (24) and first longitudinal rack (25) on workstation (1), a plurality of slide and establish first longitudinal sliding seat (26) on first longitudinal rail (24), fix pendulum material driving motor (27), the cover on pendulum material driving motor (27) establish first drive gear (28), first drive gear (28) with first longitudinal rack (25) intermeshing, charging tray (22) install on first longitudinal sliding seat (26).
5. The pipe joint member automatic air-tightness detecting device according to claim 1, wherein: the transfer mechanism (8) comprises a transverse bracket (29) arranged on the workbench (1) in a spanning manner, a transverse guide rail (30) and a transverse rack (31) fixed on the transverse bracket (29), a plurality of transverse sliding seats (32) arranged on the transverse guide rail (30) in a sliding manner, a first mounting plate (33) fixed on the transverse sliding seats (32), and a transfer driving motor (34) acting on the first mounting plate (33), the device comprises a second driving gear (35) which is sleeved on a transfer driving motor (34) and meshed with a transverse rack (31), a lifting cylinder (36) arranged on a first mounting plate (33), a second mounting plate (37) which is positioned below the first mounting plate (33) and acted by the lifting cylinder (36), and a feeding air claw module (38) and a discharging air claw module (39) which are transversely arranged on the second mounting plate (37) in parallel.
6. The pipe joint member automatic air-tightness detecting device according to claim 1, wherein: the air tightness detection mechanism (6) further comprises a second longitudinal guide rail (41), a second longitudinal sliding seat (42) arranged on the second longitudinal guide rail (41) in a sliding mode, a moving bottom plate (43) fixed on the second longitudinal sliding seat (42), and a longitudinal driving cylinder (44) arranged on one side of the moving bottom plate (43) and acting on the moving bottom plate (43);
differential pressure transmitter (11), put material frock (13), first switching ball valve (12) and second switching ball valve (15) and on-off control motor (20) all install removal bottom plate (43) on.
7. The pipe joint member automatic airtightness detection apparatus according to claim 6, wherein: one side of the movable bottom plate (43) is also provided with an air cylinder support (45), the air cylinder support (45) is provided with a pressing air cylinder (46), and the pressing plug (14) is installed on the pressing air cylinder (46) to realize up-and-down movement.
8. The pipe joint member automatic air-tightness detecting device according to claim 1, wherein: the blanking channel (7) comprises a qualified product blanking channel (47) and an unqualified product blanking channel (48), and the qualified product blanking channel (47) and the unqualified product blanking channel (48) are arranged at intervals in the left-right direction.
9. The pipe joint member automatic air-tightness detecting device according to claim 1, wherein: the material placing tool (13) comprises a base (49), a fluid inlet (51) formed in a straight end face (50) on one side of the base (49), a fluid outlet (52) formed in the upper end of the base (49), and a fluid channel (53) arranged in the base (49) and connected with the fluid inlet (51) and the fluid outlet (52);
the lower end of the base (49) is provided with a waist-shaped adjusting hole (54);
the upper end of the base (49) can be also detachably connected with a first fastening ring piece (55) to form a first material placing positioning groove (56); the lower end of the material pressing plug (14) is detachably connected with a second fastening ring piece (57) to form a second material placing positioning groove (58);
the first material placing positioning groove (56) is internally provided with a first sealing gasket (59), the second material placing positioning groove (58) is internally provided with a second sealing gasket (61), and the fluid inlet (51) is internally provided with a sealing ring (60).
10. A method for detecting the air tightness of a pipe joint, which is applied to the full-automatic air tightness detection device of the pipe joint according to any one of claims 1 to 9, and is characterized by comprising the following steps:
s1, placing the pipe connectors to be detected on the charging tray (22) in batches and in sequence by a worker;
s2, moving the transfer mechanism (8) to the feeding area (3), and starting the feeding air claw module (38) to clamp the pipe joint to be detected at the corresponding position on the charging tray (22);
s3, the longitudinal driving cylinder (44) pushes the material placing tool (13) out to an opening position right below the transfer mechanism (8), and the feeding air claw module (38) transfers and places the clamped pipe connector on the material placing tool (13) of the detection area (2);
s4, the material placing tool (13) is pulled back by the longitudinal driving cylinder (44), the pressing cylinder (46) is started to press the pressing plug (14) into the pipe connector on the material placing tool (13), and the upper and lower ports of the pipe connector are sealed through the pressing plug (14) and the sealing gasket;
s5, the first opening-closing ball valve (12) and the second opening-closing ball valve (15) are externally connected with fluid pipelines, and the opening-closing control motor (20) is started to simultaneously open the first opening-closing ball valve (12) and the second opening-closing ball valve (15), so that fluids in the externally connected fluid pipelines respectively enter the first detection pipeline (9) and the second detection pipeline (10) at equal speed and equal quantity;
s6, controlling the input of the fluid by observing the data fed back by the pressure sensor (16); meanwhile, whether the pipe connector in detection has a leakage problem or not is observed through data fed back by a differential pressure sensor in the differential pressure transmitter (11);
s7, after the detection is finished, a pressing cylinder (46) is started to lift a pressing plug (14), then a cylinder (44) is driven longitudinally to push a material placing tool (13) to an opening position right below a transfer mechanism (8), a blanking air claw module (39) is started to clamp a pipe connector which is detected on the material placing tool (13), the transfer mechanism (8) moves to a blanking area (4), the pipe connector is sent to one of a qualified product blanking channel (47) and a unqualified product blanking channel (48) according to the detection result, and then the transfer mechanism (8) moves to a material loading area (3) to start the cyclic work of the next round of pipe connector detection.
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| CN202210780200.8A CN115090557B (en) | 2022-07-04 | 2022-07-04 | Full-automatic air tightness detection device and detection method for pipe joint |
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| DE4032999A1 (en) * | 1990-10-15 | 1992-06-11 | Groeditzer Stahlwerke Gmbh | Automatic seal testing machine for hollow bodies - has cassettes in pivoting table moving between load-unload and test positions and uses electronic evaluation unit and sorting mechanism to maximise throughput |
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| CN115090557B (en) | 2023-10-31 |
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