CN111632878A - Leak detector for detecting air tightness of product - Google Patents
Leak detector for detecting air tightness of product Download PDFInfo
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- CN111632878A CN111632878A CN202010699468.XA CN202010699468A CN111632878A CN 111632878 A CN111632878 A CN 111632878A CN 202010699468 A CN202010699468 A CN 202010699468A CN 111632878 A CN111632878 A CN 111632878A
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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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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/32—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators
- G01M3/3281—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators removably mounted in a test cell
- G01M3/329—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators removably mounted in a test cell for verifying the internal pressure of closed containers
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- Examining Or Testing Airtightness (AREA)
Abstract
The invention relates to a leak detector for detecting the air tightness of a product, which comprises a machine tool, wherein a feeding conveyer belt for conveying the product, a feeding and pushing device for pushing the product to move, a leak detection device for detecting the air tightness of the product, a discharging conveyer belt for conveying the product and a control device are arranged on the machine tool; the leakage detecting device comprises a placing table for placing a product, a tensioning device for fixing the product on the placing table, a cover body with a leakage detecting cavity, an inflating device for inflating gas into the product, and a pressure sensor for monitoring the pressure value of the leakage detecting cavity; the pressure sensor monitors the pressure value of the leakage detection cavity and judges the air tightness condition of the product according to the numerical value of the pressure value. Whole process automation utilizes pressure sensor to detect the gas tightness of product moreover, detects accurately, improves the practicality of leak hunting machine.
Description
Technical Field
The invention relates to a leak detector for detecting the air tightness of a product.
Background
Airtightness: it is determined whether there is a leakage phenomenon at each connection portion of the container. For example, the gas tightness of the liquefied gas tank is strictly checked after welding, so that accidents caused by gas leakage after gas filling are prevented.
The filter means a fitting functioning to filter foreign substances or gas through filter paper. The air tightness of the filter is detected according to the requirement before leaving the factory so as to eliminate unqualified products.
The air tightness detection of the existing filter adopts a filter clamping tool arranged on the inner side of a water tank, the filter clamping tool is clamped on the tool, the filter clamping tool seals the filter, the water level in the water tank rises and does not pass through a detection station, then the air tightness detection is carried out on the filter at the filter clamping tool, and the detection efficiency is low under the structural design of the existing filter air tightness detection equipment.
Disclosure of Invention
The invention aims to provide a leak detector for detecting the air tightness of a product, which is accurate in air tightness detection and high in air tightness detection efficiency.
The purpose of the invention is realized as follows:
a leakage detector for detecting the air tightness of a product comprises a machine tool, wherein a feeding conveying belt for conveying the product, a feeding pushing device for pushing the product to move, a leakage detecting device for detecting the air tightness of the product, a discharging conveying belt for conveying the product and a control device are arranged on the machine tool, and the feeding conveying belt, the feeding pushing device, the leakage detecting device and the discharging conveying belt are respectively and electrically connected with the control device;
the leakage detecting device comprises a placing table for placing a product, a tensioning device for fixing the product on the placing table, a cover body with a leakage detecting cavity, an inflating device for inflating gas into the product, and a pressure sensor for monitoring the pressure value of the leakage detecting cavity;
the feeding and pushing device comprises a feeding swing arm used for moving a product on a feeding conveying belt to the placing table, and when the product is moved to the placing table, the cover body moves and sits on the placing table, so that the product is placed in the leakage detecting cavity, then the inflating device inflates gas into the product, and meanwhile, the pressure sensor monitors the pressure value of the leakage detecting cavity and judges the gas tightness condition of the product according to the numerical value of the pressure value.
The product transportation of feeding blevile of push area to the mount table on, the cover body removes and sits on the mount table after that, the product gets into the detection intracavity of the cover body this moment, aerating device fills gas in the product, pressure sensor monitoring detects the pressure value in chamber, if the pressure value of pressure sensor monitoring is at the settlement scope, then it is intact to show the gas tightness of product, if the pressure value of pressure sensor monitoring appears unusually, show the gas tightness trouble of product, lead to gas leakage to detecting the chamber, lead to the pressure value to appear unusually, the gas tightness situation is judged simply, after the product detection finishes, ejection of compact transport area transports the product out, whole process automation, and utilize pressure sensor to detect the gas tightness of product, it is accurate to detect, the practicality of leak hunting machine improves.
The aim of the invention can also be solved by the following technical measures:
as a more specific scheme, still including being used for putting the product location at the positioner of putting the platform, positioner includes first clamping jaw, second clamping jaw, first gear, second gear and first cylinder, first gear and second gear meshing, first gear is connected to first clamping jaw, and the second gear is connected to the second clamping jaw, the telescopic link and the first gear connection of first cylinder, when first cylinder moved, first cylinder drove first gear rotatory, and it is rotatory that the second gear follows first gear, realizes first clamping jaw and second clamping jaw alternate segregation or draw close each other to the position of adjustment product.
When first clamping jaw and second clamping jaw centre gripping product, the position of first clamping jaw and second clamping jaw adjustment product makes the product put more accurate in the position of putting the platform, improves the practicality of leak hunting machine.
As a more specific scheme, a rubber mat is arranged on the surface of the placing table. Through being provided with the cushion, the contact is hugged closely to cushion and the cover body, improves the leakproofness of putting platform and the cover body, and cushion and product hug closely the contact, improve the leakproofness of putting platform and product to improve detection accuracy.
As a more specific scheme, the tensioning device comprises a pull rod, a paw, a second cylinder, a third cylinder and a spring, the placing table is provided with an opening, the placing table is seated on the third cylinder, the second cylinder is connected with the third cylinder, and the second cylinder controls the third cylinder to lift;
one end of the pull rod is provided with a support head, the other end of the pull rod penetrates through an opening of the placing table and is connected with a third cylinder, the third cylinder drives the pull rod to lift, the claws are wound around the periphery of the pull rod at intervals, and an elastic sleeve is enclosed between the claws;
the spring is sleeved on the pull rod, one end of the spring abuts against the elastic sleeve, the other end of the spring abuts against the third cylinder, and the spring forms a reset mechanism of the elastic sleeve;
when the second cylinder drives the third cylinder to ascend, the elastic sleeve and the pull rod ascend and expose the placing table, and when the third cylinder drives the pull rod to descend, the opening head enters the inner cavity of the elastic sleeve and gradually opens the elastic sleeve, so that the diameter of the upper portion of the elastic sleeve is larger than the diameter of the lower portion of the elastic sleeve.
The second cylinder of the tensioning device pulls the third cylinder to rise, the pull rod and the elastic sleeve rise and expose the placing table at the moment, then the third cylinder pulls the pull rod to fall, the opening head of the pull rod enters the inner cavity of the elastic sleeve and gradually opens the elastic sleeve, so that the upper diameter of the elastic sleeve is larger than the lower diameter of the elastic sleeve until the elastic sleeve is opened to the maximum range, then the third cylinder continues to pull the pull rod and drives the elastic sleeve to fall together, the elastic sleeve keeps an opening state under the action of a spring at the moment, and the claw of the elastic sleeve hooks a tight product at the moment, so that the product is tensioned and locked, and the product is prevented from loosening.
As a more specific scheme, an air cylinder is arranged on the third air cylinder, an air inlet joint is arranged on one side of the air cylinder, an air outlet is formed in the spreading head, an air exhaust channel is formed in the pull rod, the pull rod penetrates through the air cylinder to be connected with the third air cylinder, the inlet of the air exhaust channel is communicated with the inner cavity of the air cylinder, and the outlet of the air exhaust channel is communicated with the air outlet.
More specifically, a convex hook is arranged on the outer wall of the paw near the upper end of the paw. Through being provided with protruding hook, protruding hook product, it is not hard up to avoid the product, improves the practicality of leak hunting machine.
As more specific scheme, still include a rotary platform, rotary platform includes carousel, lower carousel and fourth cylinder, goes up and forms work area between carousel and the lower carousel, the fourth cylinder interval sets up in the bottom of last carousel, and the telescopic link and the cover body coupling of fourth cylinder, the fourth cylinder drive the cover body and reciprocate, put the platform interval and set up on the surface of carousel down, put the position one-to-one of platform and the cover body. Through being provided with rotary platform, the multiunit leak hunting device is put on rotary platform, and every group leak hunting device all can detect the product, improves the detection efficiency of product greatly.
As a more specific scheme, the leakage detection device further comprises a filling body, wherein the filling body is arranged in the inner cavity of the cover body to adjust the space size of the leakage detection cavity. The user can be according to the shape of product, fills the obturator to cover the internal space size of examining the leakage cavity of adjusting, realizes that this detection machine can detect the product of polymorphic type, and when the space size that will examine the leakage cavity is adjusted to the shape size that is close with the product in addition, the precision that detects is higher.
As a more specific scheme, the feeding and pushing device comprises at least one group of pushing assemblies, a feeding turntable, a driving mechanism and a contact plate, wherein each group of pushing assemblies is arranged at intervals along the circumferential direction of the feeding turntable, each group of pushing assemblies comprises a feeding push arm, a push arm cylinder and a mechanical valve, the push arm cylinder is fixed on the feeding turntable, a telescopic rod of the push arm cylinder is connected with the feeding push arm, the mechanical valve is connected with the push arm cylinder and rotates along with the feeding turntable, the mechanical valve is electrically connected with the push arm cylinder, the driving mechanism is connected with the feeding turntable, the driving mechanism drives the feeding turntable to rotate, the contact plate is positioned on one side of the feeding turntable, a contact piece of the mechanical valve is provided with a roller, when the mechanical valve rotates to the position of the contact plate, the roller slides on the contact plate, the roller presses the contact piece of the mechanical valve to keep the mechanical valve in a connected state all the time, the mechanical valve, the pushing arm cylinder pushes the feeding pushing arm to move. A user places products (such as a filter) on a feeding conveying belt, a feeding motor drives a feeding turntable to rotate, a feeding pushing arm moves the products on the feeding conveying belt to a placing table, at the moment, when a roller just enters a touch plate and slides on the touch plate, a mechanical valve is connected with an air source of a pushing arm cylinder, a telescopic rod of the pushing arm cylinder pushes the feeding pushing arm to retreat, the feeding pushing arm is far away from the products, another product is separated, the products are prevented from being crowded together, when the rotating platform drives the products to move to another position, the roller just leaves the touch plate at the moment, the mechanical valve is disconnected from the air source of the pushing arm cylinder, the telescopic rod of the pushing arm cylinder shrinks to drive the feeding pushing arm to reset, the reciprocating circulation is carried out, and the products are placed on the placing table in order.
As a more specific scheme, still include ejection of compact blevile of push, ejection of compact blevile of push is including being used for removing ejection of compact swing arm, ejection of compact carousel and the ejection of compact motor to ejection of compact conveyer belt with the product on the placing table, ejection of compact swing arm sets up on ejection of compact carousel along the circumferencial direction interval of ejection of compact carousel, and ejection of compact motor and ejection of compact carousel are connected, and ejection of compact motor drives the rotation of ejection of compact carousel.
The invention has the following beneficial effects:
according to the invention, the product in the feeding and pushing device is conveyed to the placing table by the feeding and pushing device, then the cover body moves and sits on the placing table, the product enters the detection cavity of the cover body at the moment, the gas is filled into the product by the gas filling device, the pressure value of the detection cavity is monitored by the pressure sensor, if the pressure value monitored by the pressure sensor is within a set range, the gas tightness of the product is intact, if the pressure value monitored by the pressure sensor is abnormal, the gas tightness fault of the product is indicated, the gas leaks to the detection cavity, the pressure value is abnormal, the judgment of the gas tightness condition is simple, after the product is detected, the product is conveyed out by the discharging conveyor belt, the whole process is automatic, the gas tightness of the product is detected by the pressure sensor, the detection is accurate, and the practicability.
According to the invention, the second cylinder of the tensioning device pulls the third cylinder to rise, the pull rod and the elastic sleeve rise and are exposed out of the placing table, then the third cylinder pulls the pull rod to fall, the opening head of the pull rod enters the inner cavity of the elastic sleeve and gradually opens the elastic sleeve, so that the diameter of the upper part of the elastic sleeve is larger than that of the lower part of the elastic sleeve until the elastic sleeve is opened to the maximum range, then the third cylinder continues to pull the pull rod and drives the elastic sleeve to fall together, at the moment, the elastic sleeve keeps an opening state under the action of a spring, at the moment, the claw of the elastic sleeve hooks tightly a product, the product is tensioned and locked, and the product is prevented from loosening.
According to the invention, a user places a product (such as a filter) on a feeding conveyor belt, a feeding motor drives a feeding turntable to rotate, a feeding push arm moves the product on the feeding conveyor belt to a placing table, at the moment, when a roller just enters a touch plate and slides on the touch plate, a mechanical valve is connected with an air source of a push arm cylinder, a telescopic rod of the push arm cylinder pushes the feeding push arm to move backwards, the feeding push arm is far away from the product and blocks another product, the product is prevented from being crowded together, when the rotating platform drives the product to move to another position, the roller just leaves the touch plate, the mechanical valve is disconnected from the air source of the push arm cylinder, the telescopic rod of the push arm cylinder contracts to drive the feeding push arm to reset, and the operation is repeated in such a way, and the product is placed on the placing table in order.
According to the invention, a user can fill the filling body into the cover body to adjust the space size of the leakage detection cavity according to the shape of the product, so that the detection machine can detect various types of products, and when the space size of the leakage detection cavity is adjusted to be close to the shape size of the product, the detection accuracy is higher.
Drawings
Fig. 1 is a schematic diagram of a leak detection machine for detecting the hermeticity of a product.
Fig. 2 is a schematic view of a leak detector for detecting the airtightness of a product (a feed push arm rotates with a turntable to push the product in a feed conveyor belt into a placing table).
Fig. 3 is a schematic diagram of a leak detection machine for detecting the hermeticity of a product (the feed pusher arm moves away from the product at the presentation stage).
Fig. 4 is a schematic view of a leak detector for detecting airtightness of a product (the feed pusher arm is returned to an initial state and rotated with the turntable).
FIG. 5 is a schematic diagram of the feeding and discharging parts of a leak detector for detecting the airtightness of a product.
Fig. 6 is a schematic view of a feeding and pushing device of the leak detector for detecting the airtightness of a product (the telescopic rod of the pushing arm cylinder is in a contracted state).
Fig. 7 is a schematic view of a feeding and pushing device of the leak detector for detecting the airtightness of a product (the telescopic rod of the pushing arm cylinder is in an unfolded state).
Fig. 8 is a schematic view of a leak detector for detecting the hermeticity of a product (hidden portion of the casing).
Fig. 9 is a schematic view of a pull rod of the leak detector for detecting the airtightness of a product, which is not exposed out of a placing table.
Fig. 10 is a schematic view of a pull rod exposure placing table of the leak detector for detecting the airtightness of a product.
Fig. 11 is a schematic sectional view of a pull rod exposure placing table of a leak detector for detecting the airtightness of a product.
Fig. 12 is a schematic view showing a pull rod of a leak detector for detecting the airtightness of a product being exposed from a placing table and tensioned.
Fig. 13 is a schematic cross-sectional view of a tension rod of a leak detector for detecting the airtightness of a product being pulled to be exposed from a placing table.
Fig. 14 is a schematic view of a fourth cylinder and casing of the leak detector for detecting the airtightness of a product.
Fig. 15 is a schematic view of a positioning device of the leak detection machine for detecting airtightness of a product (product-released state).
Fig. 16 is a schematic view of a positioning device of the leak detector for detecting airtightness of a product (product-clamped state).
Detailed Description
The invention is further described with reference to the following figures and examples:
in the embodiment, with reference to fig. 1 to 16, a leak detector for detecting the airtightness of a product includes a machine tool 1, a feeding conveyor belt 2 for conveying the product 100, a feeding and pushing device 3 for pushing the product 100 to move, a leak detection device 4 for detecting the airtightness of the product 100, a rotary platform 5, a discharging conveyor belt 6 for conveying the product 100, and a control device, where the feeding conveyor belt 2, the feeding and pushing device 3, the leak detection device 4, a positioning device, the rotary platform 5, and the discharging conveyor belt 6 are electrically connected to the control device, respectively.
Every group pushes away material assembly 31 and includes feeding push arm 311, push arm cylinder 312 and mechanical valve 313, feeding push arm 311 one end is provided with notch 3111, and partial feeding carousel 32 inserts in notch 3111, links together through pivot 3112 between feeding carousel 32 and the notch 3111, and feeding push arm 311 uses pivot 3112 to be the swing of rotation center low-angle, and the other end that feeding push arm 311 stretches out outwards for remove product 100 to the stand on the feeding conveyer belt 2.
The arm pushing cylinder 312 is arranged on the feeding turntable 32, the telescopic rod of the arm pushing cylinder 312 is connected with the feeding arm pushing 311, the mechanical valve 313 is electrically connected with the arm pushing cylinder 312, and the mechanical valve 313 is fixed on the arm pushing cylinder 312 and synchronously rotates along with the arm pushing cylinder 312, so that multiple groups of material pushing assemblies 31 are arranged on the turntable at intervals along the circumferential direction.
The contact piece of the mechanical valve 313 is provided with a roller 33, when the roller 33 slides on the contact plate 35, the roller 33 presses the contact piece of the mechanical valve 313 to keep the mechanical valve 313 in a connected state all the time, the mechanical valve 313 starts the push arm cylinder 312, and the push arm cylinder 312 drives the feeding push arm 311 to move.
The rotary platform 5 comprises an upper rotary disc 51, a lower rotary disc 52 and a fourth air cylinder 53, a working area is formed between the upper rotary disc 51 and the lower rotary disc 52, and a plurality of fourth air cylinders 53 are arranged at intervals on the bottom of the upper rotary disc 51 along the circumferential direction of the upper rotary disc.
The leakage detecting device 4 comprises a placing table 41 for placing the product 100, a tensioning device 7 for fixing the product 100 on the placing table 41, a cover body 42 with a leakage detecting cavity 422, an inflating device 43 for inflating gas into the product 100 and a pressure sensor 44 for monitoring the pressure value of the leakage detecting cavity 422;
the inner cavity of the cover body 42 is provided with a filling body 421, the filling body 421 is arranged in the inner cavity of the cover body 42 to adjust the space size of the leakage detection cavity 422, the pressure sensor 44 is arranged on the outer wall of the cover body 42, and the sensing end of the pressure sensor 44 extends into the leakage detection cavity 422 to detect the pressure value of the leakage detection cavity 422.
The cover body 42 of the leakage detection device 4 is connected with the telescopic rod of the fourth air cylinder 53, the fourth air cylinder 53 drives the cover body 42 to move up and down, the placing table 41 of the leakage detection device 4 is arranged on the surface of the lower rotating disc 52 at intervals, the placing table 41 corresponds to the cover body 42 one by one, the rubber mat 411 is arranged on the surface of the placing table 41, and multiple groups of leakage detection devices 4 are arranged on the rotating platform 5.
A positioning device 8 for positioning and placing the product 100 on the placing table 41 is arranged corresponding to each placing table 41, and the positioning device 8 is electrically connected with the control device.
The positioning device 8 comprises a first clamping jaw 81, a second clamping jaw 82, a first gear 83, a second gear 84 and a first cylinder 85, the first clamping jaw 81 is a hook-shaped clamping jaw, the first gear 83 is meshed with the second gear 84, the first clamping jaw 81 is connected with the first gear 83, the second clamping jaw 82 is connected with the second gear 84, an expansion rod of the first cylinder 85 is connected with the first gear 83, when the first cylinder 85 acts, the first cylinder 85 drives the first gear 83 to rotate, the second gear 84 rotates along with the first gear 83, the first clamping jaw 81 and the second clamping jaw 82 are separated from each other or close to each other, and therefore the position of the product 100 is adjusted.
A tensioning device 7 is arranged corresponding to each placing table 41, each tensioning device 7 comprises a pull rod 71, a claw 72, a second air cylinder 73, a third air cylinder 74 and a spring 75, an opening is formed in each placing table 41, each placing table 41 is seated on the corresponding third air cylinder 74, the second air cylinders 73 are connected with the corresponding third air cylinders 74, and the second air cylinders 73 control the third air cylinders 74 to ascend and descend;
an air cylinder 741 is arranged on the third air cylinder 74, an air inlet joint 742 is arranged on one side of the air cylinder 741, an exhaust channel 711 is arranged on the pull rod 71, a support head 76 is arranged at one end of the pull rod 71, an exhaust port 761 is arranged on the support head 76, and the exhaust port 761 is communicated with the exhaust channel 711.
The outer wall of the paw 72 is provided with a convex hook 721 near the upper end thereof, the paw 72 is arranged around the periphery of the pull rod 71 at intervals, and an elastic sleeve 77 is formed between the paw 72 and the paw 72.
The spring 75 is arranged in the air cylinder 741, the pull rod 71 sequentially penetrates through the opening of the placing table 41 and the air cylinder 741 to be connected with the third air cylinder 74, a sealing ring 743 is arranged at the joint of the pull rod 71 and the air cylinder 741, the third air cylinder 74 drives the pull rod 71 to lift, meanwhile, the spring 75 is sleeved on the pull rod 71, one end of the spring 75 abuts against the elastic sleeve 77, the other end of the spring 75 abuts against the third air cylinder 74, and the spring 75 forms a reset mechanism of the elastic sleeve 77.
The inflator 43 is connected to the air inlet 742 of the air cylinder 741, and the air generated by the inflator 43 is discharged to the air outlet 761 along the air inlet 742, the air pump chamber, and the air outlet 711 to the product 100.
The discharging conveyer belt 6 is positioned at the outlet of the rotary platform 5, and the discharging and pushing device 9 is positioned between the discharging conveyer belt 6 and the outlet of the rotary platform 5. The discharging and pushing device 9 comprises a discharging swing arm 91, a discharging turntable 92 and a discharging motor 93, the discharging swing arm 91 is arranged on the discharging turntable 92 at intervals along the circumferential direction of the discharging turntable 92, the discharging motor 93 is connected with the discharging turntable 92, the discharging motor 93 drives the discharging turntable 92 to rotate, the discharging swing arm 91 moves the product 100 on the placing table 41 to the discharging conveyor belt 6, and the product 100 is output.
The outlet of the rotary platform 5 is also provided with a metal detector 10, when the cover body 42 is a metal cover body 42, if the corresponding fourth cylinder 53 has a fault, the cover body 42 cannot be separated from the product 100, when the product 100 moves to the discharging conveyor belt 6, the metal detector generates a signal and transmits the signal to a control device, and the control device stops the work of the leak detector.
The working principle is as follows:
when a user places a product 100 (such as a filter) on the feeding conveyor belt 2, the feeding motor drives the feeding turntable 32 to rotate, the feeding push arm 311 moves the product 100 on the feeding conveyor belt 2 to the placing table 41, at the moment, the roller 33 just enters the touch plate 35 and slides on the touch plate 35, the mechanical valve 313 is connected with the air source of the push arm cylinder 312, the telescopic rod of the push arm cylinder 312 pushes the feeding push arm 311 to move back, the feeding push arm 311 is far away from the product 100 and blocks another product 100, so that the product 100 is prevented from being crowded together, when the rotary platform 5 drives the product 100 to move to another position, the roller 33 just leaves the touch plate 35, the mechanical valve 313 disconnects the air source of the push arm cylinder 312, the telescopic rod of the push arm cylinder 312 contracts to drive the feeding push arm 311 to reset, and the cycle is repeated, so that the products 100 are placed on the placing table 41 in order.
When the product 100 is placed on the placing table 41, the placing position of the product 100 is inaccurate, the first cylinder 85 and the second cylinder 73 of the positioning device 8 act at the moment, the first cylinder 85 and the second cylinder 73 drive the first clamping jaw 81 and the second clamping jaw 82 to approach each other to clamp the product 100, the placing position of the product 100 is adjusted, and the placing accuracy of the product 100 is improved.
After the placement position of the product 100 is accurate, the second air cylinder 73 of the tensioning device 7 pulls the third air cylinder 74 to ascend, the pull rod 71 and the elastic sleeve 77 ascend and are exposed out of the placement table 41, then the third air cylinder 74 pulls the pull rod 71 to descend, at the moment, the expanding head 76 of the pull rod 71 enters the inner cavity of the elastic sleeve 77 and gradually expands the elastic sleeve 77, so that the diameter of the upper portion of the elastic sleeve 77 is larger than that of the lower portion of the elastic sleeve, then the third air cylinder 74 continues to pull the pull rod 71 and the elastic sleeve 77 to descend, at the moment, the elastic sleeve keeps an expanded state under the action of a spring, at the moment, the claw 72 of the elastic sleeve 77 hooks the product 100 tightly, and the product 100 is tensioned and locked.
After the product 100 is tensioned and locked, the fourth cylinder 53 of the rotating platform 5 drives the cover body 42 to move downwards to abut against the placing table 41, the bottom end of the cover body 42 is tightly attached to the rubber mat 411 of the placing table 41, the sealing effect is enhanced, and meanwhile the product 100 enters the detection cavity of the cover body 42.
Next, the gas generated by the inflator 43 is discharged to the exhaust port 761 along the air inlet 742, the inner cavity of the air pump, and the exhaust channel 711 to the product 100 at a preset detection pressure, after a preset pressure stabilization time, the pressure sensor 44 collects a first detection pressure P1 in the detection cavity, and after a preset detection time, the pressure sensor 44 collects a second detection pressure P2 in the detection cavity to obtain a pressure difference change DeltaP = P2-P1, where the DeltaP is larger than normal if the product leaks, and by setting a leakage pressure reasonably, the air tightness integrity of the product 100 can be determined, and if the pressure value of the detection cavity changes, the product 100 is indicated to leak, and the product 100 is a failed product 100.
After the detection of the product 100 is finished, the discharging swing arm 91 of the discharging and pushing device 9 moves the product 100 on the placing table 41 to the discharging conveyor belt 6, and outputs the product 100.
The control device is for controlling display screen 200, each group of leak detection devices 4 is connected with controlling display screen 200, and rotary platform 5 is provided with the serial number corresponding to each group of leak detection devices 4's position, each group of leak detection devices 4's pressure data transfer is to controlling display screen 200, the user of being convenient for watches, if the pressure sensor 44 of a certain group of leak detection devices 4 appears unusually, unusual data will be present on controlling display screen 200, the user produce unusual bad product 100 of corresponding serial number with pressure sensor 44 take out can, the operation is very simple.
Claims (10)
1. The utility model provides a leak hunting machine of detection product gas tightness which characterized in that: the machine tool comprises a machine tool, wherein a feeding conveyer belt for conveying products, a feeding and pushing device for pushing the products to move, a leakage detecting device for detecting the air tightness of the products, a discharging conveyer belt for conveying the products and a control device are arranged on the machine tool, and the feeding conveyer belt, the feeding and pushing device, the leakage detecting device and the discharging conveyer belt are respectively and electrically connected with the control device;
the leakage detecting device comprises a placing table for placing a product, a tensioning device for fixing the product on the placing table, a cover body with a leakage detecting cavity, an inflating device for inflating gas into the product, and a pressure sensor for monitoring the pressure value of the leakage detecting cavity;
the feeding and pushing device comprises a feeding swing arm used for moving a product on a feeding conveying belt to the placing table, and when the product is moved to the placing table, the cover body moves and sits on the placing table, so that the product is placed in the leakage detecting cavity, then the inflating device inflates gas into the product, and meanwhile, the pressure sensor monitors the pressure value of the leakage detecting cavity and judges the gas tightness condition of the product according to the numerical value of the pressure value.
2. A leak detector for detecting the airtightness of a product according to claim 1, wherein: still including being used for putting the product location at the positioner of putting the platform, positioner includes first clamping jaw, second clamping jaw, first gear, second gear and first cylinder, first gear and second gear meshing, first gear is connected to first clamping jaw, and the second gear is connected to the second clamping jaw, the telescopic link and the first gear connection of first cylinder, during first cylinder action, first cylinder drive first gear rotatory, and it is rotatory that first gear is followed to the second gear, realizes first clamping jaw and second clamping jaw looks mutual separation or draws close each other to the position of adjustment product.
3. A leak detector for detecting the airtightness of a product according to claim 1, wherein: the surface of the placing table is provided with a rubber mat.
4. A leak detector for detecting the airtightness of a product according to claim 1, wherein: the tensioning device comprises a pull rod, a paw, a second cylinder, a third cylinder and a spring, the placing table is provided with an opening, the placing table is seated on the third cylinder, the second cylinder is connected with the third cylinder, and the second cylinder controls the third cylinder to lift;
one end of the pull rod is provided with a support head, the other end of the pull rod penetrates through an opening of the placing table and is connected with a third cylinder, the third cylinder drives the pull rod to lift, the claws are wound around the periphery of the pull rod at intervals, and an elastic sleeve is enclosed between the claws;
the spring is sleeved on the pull rod, one end of the spring abuts against the elastic sleeve, the other end of the spring abuts against the third cylinder, and the spring forms a reset mechanism of the elastic sleeve;
when the second cylinder drives the third cylinder to ascend, the elastic sleeve and the pull rod ascend and expose the placing table, and when the third cylinder drives the pull rod to descend, the opening head enters the inner cavity of the elastic sleeve and gradually opens the elastic sleeve, so that the diameter of the upper portion of the elastic sleeve is larger than the diameter of the lower portion of the elastic sleeve.
5. Leak detector for detecting the tightness of a product according to claim 4, characterized in that: the third cylinder is provided with an air cylinder, an air inlet joint is arranged on one side of the air cylinder, an air outlet is arranged on the spreading head, an air exhaust channel is arranged on the pull rod, the pull rod penetrates through the air cylinder to be connected with the third cylinder, an inlet of the air exhaust channel is communicated with an inner cavity of the air cylinder, and an outlet of the air exhaust channel is communicated with the air outlet.
6. Leak detector for detecting the tightness of a product according to claim 4, characterized in that: and a convex hook is arranged on the outer wall of the paw close to the upper end of the paw.
7. Leak detector for detecting the tightness of a product according to claims 1 to 6, characterized in that: still include a rotary platform, rotary platform includes carousel, lower carousel and fourth cylinder, goes up the carousel and forms work area down between the carousel, the fourth cylinder interval sets up in the bottom of last carousel, the telescopic link and the cover body coupling of fourth cylinder, and the fourth cylinder drives the cover body and reciprocates, put the surface of the carousel under the platform interval sets up, puts the position one-to-one of platform and the cover body.
8. A leak detector for detecting the airtightness of a product according to claim 1, wherein: the leakage detection cover further comprises a filling body, and the filling body is arranged in the inner cavity of the cover body to adjust the space size of the leakage detection cavity.
9. A leak detector for detecting the airtightness of a product according to claim 1, wherein: the feeding and pushing device comprises at least one group of pushing components, a feeding turntable, a driving mechanism and a touch plate, wherein each group of pushing components is arranged at intervals along the circumferential direction of the feeding turntable and comprises a feeding pushing arm, a pushing arm cylinder and a mechanical valve, the push arm cylinder is fixed on the feeding turntable, the telescopic rod of the push arm cylinder is connected with the feeding push arm, the mechanical valve is connected with the push arm cylinder and rotates along with the feeding turntable, the driving mechanism is connected with the feeding turntable and drives the feeding turntable to rotate, the touch plate is positioned on one side of the feeding turntable, the contact piece of the mechanical valve is provided with a roller, when the mechanical valve rotates to the position of the touch plate, the roller slides on the touch plate, the roller presses the contact piece of the mechanical valve, so that the mechanical valve is always kept in a connected state, the mechanical valve drives the push arm cylinder, and the push arm cylinder pushes the feeding push arm to move.
10. A leak detector for detecting the airtightness of a product according to claim 1, wherein: still include ejection of compact blevile of push, ejection of compact blevile of push is including being used for removing ejection of compact swing arm, ejection of compact carousel and the ejection of compact motor to ejection of compact transport band with the product on the placement table, ejection of compact swing arm sets up on ejection of compact carousel along the circumferencial direction interval of ejection of compact carousel, and ejection of compact motor and ejection of compact carousel are connected, and ejection of compact motor drives ejection of compact carousel and rotates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010699468.XA CN111632878A (en) | 2020-07-20 | 2020-07-20 | Leak detector for detecting air tightness of product |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010699468.XA CN111632878A (en) | 2020-07-20 | 2020-07-20 | Leak detector for detecting air tightness of product |
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| CN111632878A true CN111632878A (en) | 2020-09-08 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113182209A (en) * | 2021-04-19 | 2021-07-30 | 安徽鸿叶集团生态竹纤维科技有限公司 | Full-automatic selection device and method for bamboo straws |
| CN114034446A (en) * | 2021-09-10 | 2022-02-11 | 黄山旺荣电子有限公司 | Automatic leakage detecting machine for detecting air tightness of household relay explosion-proof product |
| CN114130691A (en) * | 2021-11-19 | 2022-03-04 | 珠海格力智能装备有限公司 | Feeding device |
| CN116105949A (en) * | 2023-04-13 | 2023-05-12 | 苏州科联盈自动化系统有限公司 | Air tightness detection and pin, screw and plug assembling equipment for lower cylinder body of engine |
| WO2023178943A1 (en) * | 2022-03-21 | 2023-09-28 | 苏州麦种科技有限公司 | Liquid nitrogen tank nondestructive monitoring system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113182209A (en) * | 2021-04-19 | 2021-07-30 | 安徽鸿叶集团生态竹纤维科技有限公司 | Full-automatic selection device and method for bamboo straws |
| CN114034446A (en) * | 2021-09-10 | 2022-02-11 | 黄山旺荣电子有限公司 | Automatic leakage detecting machine for detecting air tightness of household relay explosion-proof product |
| CN114034446B (en) * | 2021-09-10 | 2024-02-27 | 黄山旺荣电子有限公司 | Automatic leakage detection machine for detecting air tightness of explosion-proof product of household relay |
| CN114130691A (en) * | 2021-11-19 | 2022-03-04 | 珠海格力智能装备有限公司 | Feeding device |
| WO2023178943A1 (en) * | 2022-03-21 | 2023-09-28 | 苏州麦种科技有限公司 | Liquid nitrogen tank nondestructive monitoring system |
| CN116105949A (en) * | 2023-04-13 | 2023-05-12 | 苏州科联盈自动化系统有限公司 | Air tightness detection and pin, screw and plug assembling equipment for lower cylinder body of engine |
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