CN115090557B - Full-automatic air tightness detection device and detection method for pipe joint - Google Patents
Full-automatic air tightness detection device and detection method for pipe joint Download PDFInfo
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- CN115090557B CN115090557B CN202210780200.8A CN202210780200A CN115090557B CN 115090557 B CN115090557 B CN 115090557B CN 202210780200 A CN202210780200 A CN 202210780200A CN 115090557 B CN115090557 B CN 115090557B
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- 238000001514 detection method Methods 0.000 title claims abstract description 143
- 239000000463 material Substances 0.000 claims abstract description 119
- 230000007246 mechanism Effects 0.000 claims abstract description 60
- 238000007599 discharging Methods 0.000 claims abstract description 36
- 238000012546 transfer Methods 0.000 claims abstract description 32
- 238000003825 pressing Methods 0.000 claims abstract description 27
- 239000012530 fluid Substances 0.000 claims description 38
- 238000007789 sealing Methods 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 4
- 210000000078 claw Anatomy 0.000 description 25
- 238000010586 diagram Methods 0.000 description 5
- 230000007547 defect Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000008859 change Effects 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
- 238000010276 construction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
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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
-
- 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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- Examining Or Testing Airtightness (AREA)
Abstract
A full-automatic air tightness detection device and a detection method thereof for pipe connectors comprise a workbench and an electric control device assembly; a pipe joint piece arranging 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 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 motor also comprises a switch control motor and an output gear sleeved on the switch control motor, and the output gear is meshed with the input gear. The invention realizes the full-automatic feeding, detecting and discharging functions, and the pipe connector can be manually placed on the material tray (can be mechanically replaced), so that the labor intensity of workers is greatly reduced, and the invention is suitable 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 full-automatic air tightness detection method for pipe connectors.
Background
The pipe fitting is a part for connecting pipes into a pipeline, and has the functions of connection, control, direction change, diversion, sealing, support and the like in a pipeline system. Common pipe fittings can be divided into two-way pipes, three-way pipes, four-way pipes and the like according to pipeline branches, the common pipe fittings for changing the pipe diameter of the pipe are divided into reducing pipes, reducing elbows, branch pipe tables and the like according to the pipe directions, and brackets, supports, clamping rings and the like are used for fixing the pipe fittings.
In order to ensure the air tightness and reliability of the pipe fitting, the air tightness detection is needed after the pipe fitting is processed, namely, whether the pipe fitting has defects of sand holes, weld cracking, cold joint and the like is detected, and the air tightness detection is an essential link for verifying whether the pipe fitting meets the standard requirements. In the detection process of the conventional pipe fitting air tightness detection equipment, the pipe fitting is easy to shake or loose after being inflated, so that the installed pipe fitting is air-leaking, and the air tightness detection accuracy is affected.
The most common use mode of the existing air tightness detection device is that the pipe connector is connected with the device and then is placed into the water environment, the change of the water environment is observed manually, and if leakage exists, bubbles can be generated continuously.
In order to overcome the shortcomings of the above technologies, various solutions have been proposed through continuous exploration, such as the following patent numbers: the China authorized invention of CN 201810606182.5 discloses a pipe fitting air tightness detection workbench which comprises an air charging device, a high-pressure auxiliary tank, a detection device, a first pipe fitting air tightness pressurizing and positioning device and a second pipe fitting air tightness pressurizing and positioning device; the detection device is provided with a first air outlet pipe; the high-pressure auxiliary tank is connected with the air charging 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 pressurizing positioning device, the other end of the first pipe fitting airtight pressurizing positioning device is connected with a pipe fitting, the other end of the pipe fitting is connected with the second pipe fitting airtight pressurizing positioning device, and the other end of the second pipe fitting airtight pressurizing positioning device is connected with the main air outlet pipe.
The above patent of the invention still has certain defects in practical application, such as: 1. the automatic feeding and discharging device does not have a full-automatic feeding and discharging function, and needs manual operation, so that the automatic feeding and discharging device is only suitable for a small amount of spot check and is not suitable for batch detection by manufacturers; 2. the manual feeding and discharging easily causes poor positioning accuracy of the pipe joint, thereby affecting the detection accuracy; 3. judging whether air leakage occurs or not by using a barometer, wherein the barometer has poor sensitivity, so that the measurement accuracy is poor, and the micro leakage condition cannot be identified; 4. according to the disclosed scheme, the detection function cannot be realized.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a full-automatic air tightness detection device and a full-automatic air tightness detection method for pipe connectors.
The technical scheme for solving the technical problems is as follows: a full-automatic air tightness detection device for pipe joint pieces, comprising:
the workbench is divided into a detection area, a feeding area and a discharging area from left to right in sequence;
the pipe joint piece arranging mechanism is arranged in the feeding area;
an air tightness detection mechanism arranged in the detection area;
the blanking channel is arranged in the blanking area;
the transfer mechanism spans 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 and 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 for plugging one port of the pipe joint, a second opening and 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 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 for controlling the valve rod, and an input gear sleeved on the control shaft;
the automatic switching ball valve further comprises a switch control motor and an output gear sleeved on an output shaft of the switch control motor, wherein the output gear is meshed with input gears in the first switching ball valve and the second switching ball valve at the same time.
The technical scheme is further provided as follows: the first detection pipeline and the second detection pipeline are mutually independent, the differential pressure transmitter comprises a differential pressure sensor, and the differential pressure sensor is positioned between the first detection pipeline and the second detection pipeline.
In some embodiments of the present invention, the pipe joint material arranging mechanism includes a material arranging longitudinal linear motion module, a material tray arranged on the material arranging longitudinal linear motion module, and a plurality of rows of material fixing columns arranged on the material tray in parallel.
The technical scheme is further provided as follows: the material swinging longitudinal linear motion module comprises a first longitudinal guide rail and a first longitudinal rack which are fixed on a workbench, a plurality of first longitudinal sliding seats which are slidably arranged on the first longitudinal guide rail, a material swinging driving motor which is fixed on a material tray, and a first driving gear which is sleeved on the material swinging driving motor, wherein the first driving gear is meshed with the first longitudinal rack, and the material tray is arranged on the first longitudinal sliding seats.
In some embodiments of the invention, the transfer mechanism comprises a transverse bracket, a transverse guide rail, a transverse rack, a plurality of transverse sliding seats, a first mounting plate, a transfer driving motor, a second driving gear, a lifting cylinder, a second mounting plate, a feeding air claw module and a discharging air claw module, wherein the transverse bracket is arranged on a workbench in a crossing mode, the transverse guide rail and the transverse rack are fixed on the transverse bracket, the transverse sliding seats are arranged on the transverse guide rail in a sliding mode, the first mounting plate is fixed on the transverse sliding seats, the transfer driving motor acts on the first mounting plate, the second driving gear is sleeved on the transfer driving motor and meshed with the transverse rack, the lifting cylinder is arranged on the first mounting plate, the second mounting plate is positioned below the first mounting plate and is acted by the lifting cylinder, and the feeding air claw module and the discharging air claw module are transversely arranged on the second mounting plate in a parallel mode.
In some embodiments of the present invention, the air tightness detection mechanism further includes a second longitudinal rail, a second longitudinal sliding seat slidably disposed on the second longitudinal rail, a moving base plate fixed on the second longitudinal sliding seat, and a longitudinal driving cylinder disposed on one side of the moving base plate and acting on the moving base plate;
the differential pressure transmitter, the material placing tool, the first switching ball valve, the second switching ball valve and the switch control motor are all arranged on the movable bottom plate.
One side of the movable bottom plate is also provided with an air cylinder support, the air cylinder support is provided with a lower air cylinder, and the material pressing plug is arranged on the lower air cylinder so as to realize up-and-down movement.
In some embodiments of the present invention, the blanking channel includes a qualified product blanking channel and a unqualified product blanking channel, and the qualified product blanking channel and the unqualified product blanking channel are arranged at intervals along the left-right direction.
The technical scheme is further provided as follows: the material placing tool comprises a base, a fluid inlet formed in the straight end face of one side of the base, a fluid outlet formed in the upper end of the base, and a fluid channel which is arranged in the base and communicated with the fluid inlet and the fluid outlet;
the lower end of the base is provided with a waist-shaped adjusting hole;
the upper end of the base is detachably connected with a first fastening ring piece to form a first material placing and positioning groove; the lower end of the material pressing plug is detachably connected with a second fastening ring piece so as to form a second material placing positioning groove;
the first material placing and positioning groove is internally provided with a first sealing gasket, the second material placing and 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 joint, which is applied to the full-automatic air tightness detection device of the pipe joint and comprises the following steps:
s1, placing pipe connectors to be detected on a material tray in batches by workers in sequence;
s2, the transfer mechanism moves into a feeding area, and the feeding air claw module is started to clamp pipe connectors to be detected at corresponding positions on the material taking disc;
s3, pushing the material placing tool out to an open position right below the transfer mechanism by the longitudinal driving cylinder, and transferring and placing the clamped pipe joint on the material placing tool in the detection area by the material feeding air claw module;
s4, a longitudinal driving cylinder pulls back the material placing tool, a lower pressing cylinder is started to press a material pressing plug into a pipe joint piece on the material placing tool, and sealing of an upper port and a lower port of the pipe joint piece is achieved through the material pressing plug and a sealing gasket;
s5, the first opening and closing ball valve and the second opening and closing ball valve are externally connected with fluid pipelines, and the opening and closing control motor is started to simultaneously open the first opening and closing ball valve and the second opening and closing ball valve, so that fluid in the externally connected fluid pipelines respectively enters the first detection pipeline and the second detection pipeline at equal speed and equal quantity;
s6, controlling the inflow of the fluid by observing the data fed back by the pressure sensor; meanwhile, whether the pipe joint in detection has leakage problem or not is observed through data fed back by a differential pressure sensor in the differential pressure transmitter;
s7, after detection is completed, starting a pressing cylinder to lift a pressing plug, then longitudinally driving the cylinder to push out a material placing tool to an open position right below a transferring mechanism, starting a material discharging air jaw module to clamp the detected pipe joint piece on the material placing tool, moving the transferring mechanism to a material discharging area, sending the pipe joint piece to one of a qualified product discharging channel and a unqualified product discharging channel according to a detection result, and then moving the transferring mechanism to a material feeding area to start the circulating work of the detection of the next pipe joint piece.
The invention has the beneficial effects that:
1. realize full-automatic material loading, detection and unloading function, the manual work only need place the pipe joint piece on the charging tray (also can replace mechanically), greatly reduced workman's intensity of labour is applicable to the producer and carries out batch detection and use.
2. The manual feeding is replaced by the mechanism feeding, so that the position consistency of the pipe joint is good, and the detection accuracy is further ensured.
3. Through the double-circuit detection pipeline, whether the leakage is judged by the differential pressure sensor, the existing single-circuit air pressure sensor is replaced, the sensitivity during detection is greatly improved, the precision value is higher, and the micro leakage condition can be detected.
Drawings
Fig. 1 is a schematic diagram of the overall structure of the present invention.
Fig. 2 is a partial structural schematic of the present invention.
Fig. 3 is an enlarged schematic view of the 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 air tightness detecting mechanism in the present invention.
Fig. 6 is a schematic structural diagram of the air tightness detection mechanism when the feeding tool pushes out the feeding and discharging materials.
Fig. 7 is a schematic structural diagram of the airtightness detection mechanism during pull-back detection of the material placing tool.
Fig. 8 is a schematic diagram of the structure of the switch control motor and the first and second switching ball valves.
FIG. 9 is a schematic diagram of the transfer mechanism and tray during operation.
Fig. 10 is an exploded schematic view of a placement tool and a swage plug.
In the figure: 1. a work table; 2. a detection region; 3. a feeding area; 4. a blanking area; 5. a pipe joint piece arranging 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 sizing column; 24. a first longitudinal rail; 25. a first longitudinal rack; 26. a first longitudinal slide seat; 27. a material arranging driving motor; 28. a first drive gear; 29. a transverse bracket; 30. a transverse guide rail; 31. a transverse rack; 32. a lateral 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 air claw module; 39. a blanking air claw module; 40. a gap; 41. a second longitudinal rail; 42. a second longitudinal sliding seat; 43. a movable bottom plate; 44. a longitudinal driving cylinder; 45. a cylinder bracket; 46. a pressing cylinder; 47. blanking the qualified products; 48. a reject blanking channel; 49. a base; 50. a flat end surface; 51. a fluid inlet; 52. a fluid outlet; 53. a fluid channel; 54. waist-shaped adjusting holes; 55. a first fastening ring tab; 56. a first material placement positioning groove; 57. a second fastening ring tab; 58. a second material placement positioning groove; 59. a first gasket; 60. a seal ring; 61. a second gasket; 62. a position sensor.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 to 10, a full-automatic air tightness detection device for pipe joint members includes:
the workbench 1 is divided into a detection area 2, a feeding area 3 and a discharging area 4 from left to right in sequence;
the pipe joint piece arranging 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 area 4;
the transfer mechanism 8 spans 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 for plugging one port of a pipe joint, 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 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 the output shaft of the switch control motor 20, wherein the output gear 21 is meshed with the input gears 19 in the first switching ball valve 12 and the second switching ball valve 15.
Of the above, the simple construction inside differential pressure transmitter 11 is: the first detection pipeline 9 and the second detection pipeline 10 are mutually independent, the differential pressure transmitter 11 comprises a differential pressure sensor, and the differential pressure sensor is positioned between the first detection pipeline 9 and the second detection pipeline 10.
The above content is the basic scheme of the 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 the requirement, and the first switching ball valve 12 and the second switching ball valve 15 are synchronously opened by the switch control motor 20 during detection, so that fluid enters the first detection pipeline 9 and the second detection pipeline 10 in equal quantity at equal speed. Wherein the second test pipeline 10 is not connected with the pipe joint, and is used as a reference test data set for comparison; the first detection pipeline 9 is communicated with the pipe joint and detects the air tightness of the pipe joint. When the pipe joint has no leakage, the pressure values in the first detection channel and the second detection channel are the same, and the data fed back by the differential pressure sensor is theoretically 0; when the pipe joint has leakage, the pressure values in the first detection channel and the second detection channel are 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 material placing mechanism 5 is preferably: referring to fig. 3, the material arranging machine comprises a material arranging longitudinal linear motion module, a material tray 22 arranged on the material arranging longitudinal linear motion module, and a plurality of rows of material fixing columns 23 arranged on the material tray 22 in parallel. More specifically, the material-arranging longitudinal linear motion module comprises a first longitudinal guide rail 24 and a first longitudinal rack 25 which are fixed on the workbench 1, a plurality of first longitudinal sliding seats 26 which are slidably arranged on the first longitudinal guide rail 24, a material-arranging driving motor 27 which is fixed on the material tray 22, and a first driving gear 28 which is sleeved on the material-arranging driving motor 27, wherein the first driving gear 28 is meshed with the first longitudinal rack 25, and the material tray 22 is arranged on the first longitudinal sliding seats 26.
In some embodiments of the invention, the transfer mechanism 8 is preferably: referring to fig. 4, the horizontal rack assembly comprises a horizontal bracket 29 which is spanned on the workbench 1, a horizontal guide rail 30 and a horizontal rack 31 which are fixed on the horizontal bracket 29, a plurality of horizontal sliding seats 32 which are glidingly arranged on the horizontal guide rail 30, a first mounting plate 33 which is fixed on the horizontal sliding seats 32, a transfer driving motor 34 which acts on the first mounting plate 33, a second driving gear 35 which is sleeved on the transfer driving motor 34 and meshed with the horizontal rack 31, a lifting cylinder 36 which is arranged on the first mounting plate 33, a second mounting plate 37 which is positioned below the first mounting plate 33 and is 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.
The feeding and discharging gas claw modules 38 and 39 have larger structural dimensions, and thus the feeding and discharging are affected. Specifically, due to the structural interference, the line spacing between the adjacent fixed columns 23 on the tray 22 is generally required to be set larger to pass through the feeding air jaw module 38 and the discharging air jaw module 39, so that the number of pipe connectors placed on the single tray 22 is smaller, the feeding times of workers are increased, and the production efficiency is reduced.
In order to eliminate the above-mentioned drawbacks, a more specific embodiment of the tube joint material placing mechanism 5 and the transferring mechanism 8 is configured as follows: referring to fig. 9, the material fixing columns 23 have a plurality of rows and are divided into an active row and a non-active row, and the active row and the non-active row are arranged at intervals; the feeding air claw modules 38 and the discharging air claw modules 39 are respectively provided with 2 groups, gaps 40 are formed between the adjacent feeding air claw modules 38 and the adjacent discharging air claw modules 39, and the gaps 40 are opposite to the non-working fixed material columns 23. For example, 4 rows of fixed material groups are shared on the tray 22, the 1 st row and the 3 rd row form a group of working rows, when the feeding gas claw module 38/the discharging gas claw module 39 works, grabbing detection is firstly carried out on the pipe connectors on the 1 st row and the 3 rd row, and at the moment, the 2 nd row and the 4 th row serve as a gap 40 (non-working row) so that the feeding gas claw module 38/the discharging gas claw module 39 can normally pass through; similarly, after all the pipe connectors on the 1 st row and the 3 rd row are detected, the tray 22 is moved to enable the 2 nd row and the 4 th row to form a group of working rows, and when the feeding gas claw module 38/the discharging gas 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 gaps 40 (non-working rows) so that the feeding gas claw module 38/the discharging gas 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 sliding device further includes a second longitudinal rail 41, a second longitudinal sliding seat 42 slidably provided on the second longitudinal rail 41, a moving floor 43 fixed to the second longitudinal sliding seat 42, and a longitudinal driving cylinder 44 provided on one side of the moving floor 43 and acting on the moving floor 43. The mounting mode of the related components 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 arranged on the movable bottom plate 43. One side of the movable bottom plate 43 is also provided with an air cylinder bracket 45, the air cylinder bracket 45 is provided with a lower air cylinder 46, and the material pressing plug 14 is arranged on the lower air cylinder 46 to realize up-and-down movement.
In the preferred embodiment of the air tightness detecting mechanism 6, the pressing plug 14 can move up and down, on one hand, the height can be adjusted to meet the detecting requirements of different products; on the other hand, when the pipe connector is arranged on the material placing tool 13, space can be vacated, so that the product can be quickly and smoothly arranged on the upper part and the lower part. In addition, through the action of the longitudinal driving cylinder 44 on the movable bottom plate 43, the material placing tool 13 can be moved to the position right below the transfer mechanism 8, so that the transfer mechanism 8 can rapidly clamp and place the pipe joint.
In some embodiments of the invention, the blanking channel 7 includes a pass blanking channel 47 and a fail blanking channel 48 to receive a pass pipe joint and a fail pipe joint, respectively. And, the qualified product discharging channels 47 and the unqualified product discharging channels 48 are arranged at intervals along the left-right direction so as to adapt to the moving direction of the transfer mechanism 8, and the discharging efficiency is improved.
In the prior art, a very reliable material placing tool 13 is not disclosed, the pipe joint is generally horizontally placed, and the pipe joint is directly connected with the first detection pipeline 9 in a butt joint mode, so that after repeated disassembly and assembly, leakage easily occurs at the joint between the pipe joint and the first detection pipeline 9, meanwhile, the stability of fluid is relatively poor when the fluid is fed, and the accuracy of detection is also affected.
In some embodiments of the present invention, a preferred solution is provided, specifically: referring to fig. 10, the material placing tool 13 includes a base 49, a fluid inlet 51 formed on a straight end surface 50 at one side of the base 49, a fluid outlet 52 formed at an upper end of the base 49, and a fluid channel 53 disposed inside the base 49 and communicating the fluid inlet 51 with the fluid outlet 52. By adopting the technical scheme, firstly, the pipe joint part is placed on the material placing tool 13 in a vertical posture, and is adapted to the gravity direction so as to detect; secondly, a fluid channel 53 is formed in the material placing tool 13, and a transition section is formed between the first detection pipeline 9 and the pipe joint part, so that fluid is more gentle, and detection data is more stable and accurate; furthermore, the first detection pipeline 9 and the material placing tool 13 are not required to be disassembled after being firstly installed, and the tightness of the joint can be effectively ensured.
Further, a waist-shaped adjusting hole 54 is formed at the lower end of the base 49. The worker moves the connector (typically a screw) in the kidney-shaped adjustment hole 54 to achieve a better fit, depending on the size of the tube to be tested.
The technical scheme is further as follows: the upper end of the base 49 is detachably connected with a first fastening ring piece 55 to form a first material placing and 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 and positioning groove 56 is provided with a first sealing gasket 59, the second material placing and positioning groove 58 is provided with a second sealing gasket 61, and the fluid inlet 51 is internally provided with a sealing ring 60. On the one hand, the first fastening ring piece 55 and the second fastening ring piece 57 can be detached and replaced, so that a first material placing positioning groove 56 and a second material placing positioning groove 58 with different sizes are formed to adapt to the detection requirements of different pipe connectors; on the other hand, by the arrangement of the first sealing gasket 59, the second sealing gasket 61 and the sealing ring 60, the tightness of the relevant connection link is ensured, so that the detection result is more accurate.
In the invention, in order to ensure that the pipe connector material placing mechanism 5, the air tightness detection mechanism 6, the transfer mechanism 8 and the like run more accurately in place, the position sensors 62 are arranged in one-to-one correspondence, and the electric communication with each position sensor 62 is realized through an electric control device so as to feed back data in real time and issue an opening and closing instruction.
The invention also provides a method for detecting the air tightness of the pipe joint, which is applied to the full-automatic air tightness detection device of the pipe joint and comprises the following steps:
s1, placing pipe connectors to be detected on a material tray 22 in batches and in sequence by staff;
s2, the transfer mechanism 8 moves into the feeding area 3, and the feeding air claw module 38 is started to clamp the pipe joint part to be detected at the corresponding position on the material taking disc 22;
s3, pushing the material placing tool 13 out to an open position right below the transfer mechanism 8 by the longitudinal driving cylinder 44, and transferring and placing the clamped pipe joint on the material placing tool 13 of the detection area 2 by the material feeding air jaw module 38;
s4, a longitudinal driving cylinder 44 pulls back the material placing tool 13, a lower pressing cylinder 46 is started to press a material pressing plug 14 into a pipe joint piece on the material placing tool 13, and the sealing of the upper port and the lower port of the pipe joint piece is realized through the material pressing plug 14 and a sealing gasket;
s5, the first switching ball valve 12 and the second switching ball valve 15 are externally connected with fluid pipelines, and the switch is started to control the motor 20 to simultaneously open the first switching ball valve 12 and the second switching ball valve 15, so that the fluid in the externally connected fluid pipelines respectively enters the first detection pipeline 9 and the second detection pipeline 10 at equal speed and equal quantity;
s6, observing data fed back by the pressure sensor 16 to control the inlet amount of the fluid; meanwhile, whether the pipe joint in detection has leakage problem or not is observed through data fed back by a differential pressure sensor in the differential pressure transmitter 11;
and S7, after detection is completed, starting a lower air cylinder 46 to lift the material pressing plug 14, then longitudinally driving the air cylinder 44 to push the material placing tool 13 out to an open position right below the transfer mechanism 8, starting a material discharging air claw module 39 to clamp the detected pipe joint piece on the material placing tool 13, moving the transfer mechanism 8 into the material discharging area 4, sending the pipe joint piece into one of the qualified product discharging channel 47 and the unqualified product discharging channel 48 according to a detection result, and then moving the transfer mechanism 8 into the material feeding area 3 to start the cycle work of the detection of the next round of pipe joint piece.
The foregoing description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and any simple modification, variation and equivalent structural changes of the above embodiment according to the technical matter of the present invention still fall within the scope of the technical solution of the present invention.
Claims (6)
1. A full-automatic gas tightness detection device of pipe connector, characterized by comprising:
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 piece arranging 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 area (4);
the transfer mechanism (8) spans 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) for plugging one port of the 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) 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 automatic switching 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 input gears (19) in the first switching ball valve (12) and the second switching ball valve (15) at the same time;
the first detection pipeline (9) and the second detection pipeline (10) are mutually independent, the differential pressure transmitter (11) comprises a differential pressure sensor, and the differential pressure sensor is positioned between the first detection pipeline (9) and the second detection pipeline (10);
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 way, a movable bottom plate (43) fixed on the second longitudinal sliding seat (42), and a longitudinal driving air cylinder (44) arranged on one side of the movable bottom plate (43) and acting on the movable bottom plate (43);
the differential pressure transmitter (11), the material placing tool (13), the first opening and closing ball valve (12) and the second opening and closing ball valve (15) and the switch control motor (20) are all arranged on the movable bottom plate (43);
one side of the movable bottom plate (43) is also provided with an air cylinder bracket (45), the air cylinder bracket (45) is provided with a lower air cylinder (46), and the material pressing plug (14) is arranged on the lower air cylinder (46) so as to realize up-and-down movement;
the material placing tool (13) comprises a base (49), a fluid inlet (51) formed in a straight end face (50) at 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 communicated 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) is also detachably connected with a first fastening ring piece (55) so as to form a first material placing and positioning groove (56); the lower end of the material pressing plug (14) is detachably connected with a second fastening ring piece (57) so as to form a second material placing positioning groove (58);
the first material placing and positioning groove (56) is internally provided with a first sealing gasket (59), the second material placing and 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).
2. The full-automatic air tightness detection device for pipe joint according to claim 1, wherein: the pipe joint piece arranging mechanism (5) comprises an arranging longitudinal linear motion module, a material tray (22) arranged on the arranging longitudinal linear motion module and a plurality of rows of material fixing columns (23) which are arranged on the material tray (22) in parallel.
3. The full-automatic air tightness detection device for pipe joint parts according to claim 2, wherein: the material-swinging longitudinal linear motion module comprises a first longitudinal guide rail (24) and a first longitudinal rack (25) which are fixed on a workbench (1), a plurality of first longitudinal sliding seats (26) which are slidably arranged on the first longitudinal guide rail (24), a material-swinging driving motor (27) which is fixed on a material tray (22), and a first driving gear (28) which is sleeved on the material-swinging driving motor (27), wherein the first driving gear (28) is meshed with the first longitudinal rack (25), and the material tray (22) is arranged on the first longitudinal sliding seats (26).
4. The full-automatic air tightness detection device for pipe joint according to claim 1, wherein: the transfer mechanism (8) comprises a transverse support (29) which is arranged on the workbench (1), a transverse guide rail (30) and a transverse rack (31) which are fixed on the transverse support (29), a plurality of transverse sliding seats (32) which are arranged on the transverse guide rail (30) in a sliding mode, a first mounting plate (33) which is fixed on the transverse sliding seats (32), a transfer driving motor (34) which acts on the first mounting plate (33), a second driving gear (35) which is sleeved on the transfer driving motor (34) and meshed with the transverse rack (31), a lifting cylinder (36) which is arranged on the first mounting plate (33), a second mounting plate (37) which is arranged below the first mounting plate (33) and acted by the lifting cylinder (36), and a feeding air jaw module (38) and a discharging air jaw module (39) which are arranged on the second mounting plate (37) in a transverse parallel mode.
5. The full-automatic air tightness detection device for pipe joint according to claim 1, wherein: the blanking channel (7) comprises a qualified product blanking channel (47) and a unqualified product blanking channel (48), and the qualified product blanking channel (47) and the unqualified product blanking channel (48) are distributed at intervals along the left-right direction.
6. 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 5, and is characterized by comprising the following steps:
s1, placing pipe connectors to be detected on a material tray (22) in batches and in sequence by staff;
s2, the transfer mechanism (8) moves into the feeding area (3), and the transfer mechanism (8) is started to clamp the pipe joint part to be detected at the corresponding position on the material taking disc (22);
s3, pushing the material placing tool (13) out to an open position right below the transfer mechanism (8) by the longitudinal driving cylinder (44), and transferring and placing the clamped pipe joint on the material placing tool (13) of the detection area (2) by the transfer mechanism (8);
s4, a longitudinal driving cylinder (44) pulls back the material placing tool (13), a lower pressing cylinder (46) is started to press a material pressing plug (14) against a pipe joint piece on the material placing tool (13), and sealing of upper and lower ports of the pipe joint piece is achieved through the material pressing plug (14) and a sealing gasket;
s5, the first opening and closing ball valve (12) and the second opening and closing ball valve (15) are externally connected with fluid pipelines, and the opening and closing control motor (20) is started to simultaneously open the first opening and closing ball valve (12) and the second opening and closing ball valve (15), so that fluid in the externally connected fluid pipelines respectively enters the first detection pipeline (9) and the second detection pipeline (10) at equal speed and equal quantity;
s6, controlling the inflow of the fluid by observing the data fed back by the pressure sensor (16); meanwhile, whether the leakage problem exists in the pipe joint under detection is observed through data fed back by a differential pressure sensor in the differential pressure transmitter (11);
s7, after detection is completed, a lower pressing cylinder (46) is started to lift a pressing plug (14), then a longitudinal driving cylinder (44) is used for pushing out a material placing tool (13) to an open position right below a transferring mechanism (8), the transferring mechanism (8) is started to clamp a pipe joint part detected on the material placing tool (13), the transferring mechanism (8) is moved into a blanking area (4), the pipe joint part is sent into one of a qualified product blanking channel (47) and a unqualified product blanking channel (48) according to a detection result, and then the transferring mechanism (8) is moved into a feeding area (3) to start a circulating work of next pipe joint part 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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| KR20220045417A (en) * | 2020-10-05 | 2022-04-12 | 유완기 | Multi-purpose leak test device for easy mass inspection |
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| GB201604656D0 (en) * | 2016-03-18 | 2016-05-04 | Rotork Uk Ltd | Fugitive emission detection |
| TW202100966A (en) * | 2019-06-17 | 2021-01-01 | 沅聖科技股份有限公司 | Airtightness detection system and airtightness detection method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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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 |
| CN103084340A (en) * | 2013-01-14 | 2013-05-08 | 湖州剑力金属制品有限公司 | Automatic air-tightness testing and sorting device |
| CN110006604A (en) * | 2019-04-26 | 2019-07-12 | 绍兴市雅克汽配有限公司 | A kind of seat surface leakproofness cubing and application method |
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