CN111649882B - Air tightness detection device of waste liquid bag production line - Google Patents
Air tightness detection device of waste liquid bag production line Download PDFInfo
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- CN111649882B CN111649882B CN202010385114.8A CN202010385114A CN111649882B CN 111649882 B CN111649882 B CN 111649882B CN 202010385114 A CN202010385114 A CN 202010385114A CN 111649882 B CN111649882 B CN 111649882B
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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
- G01M3/3218—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 for flexible or elastic containers
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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
- G01M3/3236—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 by monitoring the interior space of the containers
- G01M3/3272—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 by monitoring the interior space of the containers for verifying the internal pressure of closed containers
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- Examining Or Testing Airtightness (AREA)
Abstract
The invention provides an air tightness detection device for a waste liquid bag production line, and belongs to the technical field of waste liquid bag processing and manufacturing. It has solved the problem that current waste liquid bag gas tightness detection efficiency is low. This gas tightness detection device of waste liquid bag production line, include along the waste liquid bag transfer chain of horizontal setting and the survey air pressure mechanism that is located one side of waste liquid bag transfer chain, survey air pressure mechanism include frame one and set up the survey air pressure subassembly that can carry out the detection to the waste liquid bag on the waste liquid bag transfer chain in the frame one, this gas tightness detection device is still including pressing bag mechanism, press bag mechanism to include frame two and the pressure bag subassembly of setting on frame two, it is corresponding with survey air pressure subassembly to press bag subassembly, press bag subassembly including the clamp plate that is located waste liquid bag transfer chain top, set up cylinder one that drives the clamp plate and go up and down for waste liquid bag transfer chain on frame two. This structure improves the efficiency that waste liquid bag gas tightness detected.
Description
Technical Field
The invention belongs to the technical field of waste liquid bag production, relates to a waste liquid bag production line, and particularly relates to an air tightness detection device of the waste liquid bag production line.
Background
Hemodialysis is a common means of clinical treatment uremia, before clinical implementation of hemodialysis to uremia patient, all should adopt the washing liquid to wash in advance blood pipeline, in order to guarantee that hemodialysis pipeline reaches the normal medical state of no impurity, no bubble, and the washing liquid implements the waste liquid that the washing in advance formed to hemodialysis pipeline, collect the bag by the waste liquid and concentrate the collection and handle, the waste liquid is collected the bag and is required all to carry out the gas tightness to every waste liquid bag in process of production and detect, avoid the waste liquid to collect the bag condition that the weeping appears in the use.
At present, the chinese patent network discloses a medical bag body gas detection apparatus [ grant publication No.: CN206311288U, comprising a main bearing frame, a conveyor belt, a function detection unit, a wire arrangement groove, a distribution box, a gas storage tank and a detected bag body, wherein a row of multi-group function detection units are arranged on the main bearing frame along the conveying direction of the conveyor belt, the function detection unit comprises a function detection unit body and a button wire collection box, the function detection unit body is provided with a pressure sensor, a pressure sensor interface, an exhaust solenoid valve, an inflation interface, an inflation control valve and a gas source connector, when the bag body of the medical bag body gas detection device is detected, the pressure sensor interface and the inflation interface are communicated with the detected bag body, the bag body is inflated, when the air pressure in the bag body reaches a set air pressure, the air pressure in the bag body is not inflated any more, after a certain time interval, the air pressure in the bag body is detected, when the detected air pressure is lower than the set air pressure limit, the air leakage of the bag body is indicated, when the detected air pressure is higher than the set air pressure lower limit, the air tightness of the bag body is good.
In the process of detecting the air tightness of the bag body, the bag body is shriveled in an initial state, no air remains in the bag body basically, a certain amount of air is filled into the bag body during detection, so that the bag body is gradually expanded, stable air pressure is formed in the bag body after the bag body is expanded to a certain degree, the air pressure can be detected by a pressure sensor, and a longer inflation time is needed from the beginning of inflation to the formation of the stable air pressure; after the gas tightness of the bag body is detected, the gas filled into the bag body is completely discharged out of the bag body through the exhaust device, so that the bag body is shriveled again, and the exhaust operation of the bag body needs to take a certain time. The whole process of the air tightness detection of the bag body is from the beginning of the air inflation of the bag body to the end of the air exhaust of the bag body, the longer air inflation time is needed from the beginning of the air inflation of the bag body to the expansion of the bag body to the formation of stable air pressure, a certain time is needed for the air exhaust operation of the bag body, the time spent in the air tightness detection of the bag body is long, and the air tightness detection efficiency of the bag body is low.
Disclosure of Invention
The invention aims to provide an air tightness detection device of a waste liquid bag production line aiming at the problems in the prior art, and the invention aims to solve the technical problems that: how to improve the efficiency of waste liquid bag gas tightness detection.
The purpose of the invention can be realized by the following technical scheme:
the utility model provides an air tightness detection device of waste liquid bag production line, includes along the waste liquid bag transfer chain of horizontal setting and the pressure measuring mechanism who is located one side of waste liquid bag transfer chain, pressure measuring mechanism includes frame one and sets up the pressure measuring subassembly that can carry out the detection to the waste liquid bag on the waste liquid bag transfer chain in frame one, its characterized in that, this air tightness detection device is still including pressing a bag mechanism, press a bag mechanism to include frame two and set up the pressure bag subassembly in frame two, it is corresponding with the pressure measuring subassembly to press a bag subassembly, press a bag subassembly including the clamp plate that is located waste liquid bag transfer chain top, set up cylinder one that drives the clamp plate and go up and down for the waste liquid bag transfer chain on frame two.
The working principle of the air tightness detection device is as follows: the waste liquid bag is placed on a waste liquid bag conveying line, the waste liquid bag is conveyed from front to back along the transverse direction by a waste liquid bag conveying line, when the waste liquid bag is positioned under a pressing plate, a cylinder driving pressing plate descends to enable the pressing plate to tightly press the waste liquid bag on the waste liquid bag conveying line, the pressing plate presses the waste liquid bag and enables the waste liquid bag to be shriveled, so that the internal air of the waste liquid bag is basically completely discharged, the pressing plate tightly presses and positions the waste liquid bag, a convenient air pressure measuring assembly is accurately inserted into a bag opening of the waste liquid bag, the waste liquid bag is inflated, the pressing plate presses the waste liquid bag, the expansion of the waste liquid bag is further limited, after the air pressure measuring assembly fills a small amount of air into the waste liquid bag, the waste liquid bag expands to a limit state, detectable air pressure is formed inside the waste liquid bag, and the air pressure of the waste liquid bag is indicated to be air-tight within a certain time period when the internal air pressure change of the waste liquid bag is within a normal range, when the internal air pressure change of the waste liquid bag exceeds a normal range, the air leakage of the waste liquid bag is indicated, the leaked waste liquid bag cannot be put into use, after the air pressure detection is finished, the air pressure measuring assembly is pulled out of the waste liquid bag, the air filled into the waste liquid bag is less, and under the extrusion of the pressing plate, the air in the waste liquid bag is exhausted instantly after the air pressure measuring assembly is pulled out of the waste liquid bag, after the air in the waste liquid bag is exhausted, the position of the waste liquid bag on the waste liquid bag conveying line is basically kept in the original position, and the problem that the waste liquid bag is displaced in the air tightness detection process is avoided. After the air tightness detection device is used for detecting the air tightness of the waste liquid bag, the time required by the inflation and the exhaust of the waste liquid bag is short, the time required by the air tightness detection of the single waste liquid bag is obviously shortened, and the efficiency of the air tightness detection of the waste liquid bag is greatly improved.
In the above-mentioned gas tightness detection device of waste liquid bag production line, its characterized in that, the pressure bag subassembly still includes along the vertical fixed plate that sets up on frame two, along the vertical guide rail one that sets up on the fixed plate, the slider that slides and set up on guide rail one, fix the cylinder clamp finger on the slider and fix on the fixed plate and drive the cylinder two of slider along vertical removal, the cylinder clamp finger is located one side of clamp plate. Through the setting of this structure, after the pressure measuring subassembly inserts the sack of waste liquid bag in, the cylinder two drive slider downstream make the cylinder press from both sides to indicate the sack department that is close to the waste liquid bag, and the cylinder presss from both sides to indicate work and presss from both sides tight location with the sack of waste liquid bag, avoids taking place the gas leakage problem in sack department at the gas filled in-process of waste liquid bag.
In the above-mentioned gas tightness detection device of waste liquid bag production line, press the bag subassembly still including fixing the mounting panel on frame two and along transversely setting up the guide rail two on the mounting panel and fix the cylinder three on the mounting panel, the fixed plate slides and sets up on guide rail two, cylinder three drive fixed plate is along transverse sliding.
In the above-mentioned airtightness detection device for the waste liquid bag production line, the air pressure measurement assembly includes an electromagnetic valve, an air pressure gauge, a third guide rail longitudinally arranged on the first rack, a translation plate slidably arranged on the third guide rail, a fourth cylinder fixed on the first rack and driving the translation plate to longitudinally slide, a fixed block arranged on the translation plate, and an air measurement pipe positioned on the fixed block, the electromagnetic valve has an air source interface, an inflation interface and an air pressure detection interface, the air pressure gauge is communicated with the air pressure detection interface, and the inflation interface is communicated with one end of the air measurement pipe. Through the setting of this structure, after the clamp plate compresses tightly on the waste liquid bag, the cylinder four-wheel drive translation board makes tracheal one end move towards the waste liquid bag side along longitudinal movement, inserts in the sack of waste liquid bag until tracheal one end, and the external air supply of air supply interface is aerifyd the waste liquid bag, and the waste liquid bag is aerifyd the back that finishes, and the barometer detects the atmospheric pressure in the waste liquid bag to whether the inspection waste liquid bag leaks gas.
In the above-mentioned gas tightness detection device of waste liquid bag production line, press the bag subassembly and survey the atmospheric pressure subassembly and all have a plurality of, a plurality of presses the bag subassembly to set up along horizontal interval on frame two, and a plurality of surveys the atmospheric pressure subassembly and sets up along horizontal interval on frame one, press the bag subassembly and survey the atmospheric pressure subassembly one-to-one. Through the setting of this structure, the waste liquid bag is arranged along horizontal interval in proper order on the waste liquid bag transfer chain, a pressure bag subassembly and a survey gas pressure subassembly constitute a survey gas group, a plurality of presses bag subassembly and a plurality of survey gas pressure subassembly to form a plurality of survey gas group, a plurality of surveys gas group and sets up along the length direction interval of waste liquid bag transfer chain, and then once carries out the operation of surveying gas simultaneously to a plurality of waste liquid bag on the waste liquid bag transfer chain, the gas tightness detection efficiency of waste liquid bag has been improved greatly.
In foretell gas tightness detection device of waste liquid bag production line, the waste liquid bag transfer chain includes frame three, sets up conveyer belt in frame three, along transversely setting up guide rail four in frame three, along transversely sliding carriage and the drive planker of setting on guide rail four along transversely sliding's driving piece, the left and right sides of conveyer belt all is provided with cylinder five fixed on the planker, be connected with the briquetting on cylinder five's the piston rod and cylinder five can drive the briquetting and go up and down, the at least part of briquetting is located the top of conveyer belt, be fixed with the cushion on the planker, the cushion is located the below of conveyer belt and the up end of cushion pastes mutually with the conveyer belt and leans on, cushion and briquetting set up relatively. Through the setting of this structure, the cylinder five drive briquetting goes up and down to make the briquetting compress tightly on the waste liquid bag, and cushion and briquetting press from both sides waste liquid bag and transfer chain tight, and driving piece drive planker is along lateral shifting, and the planker removes towards the rear end of third frame, and the planker drives cushion and briquetting and removes towards the rear end of third frame, and then drives the transfer chain and rotate backward and drive the waste liquid bag and remove certain stroke backward, realizes that the waste liquid bag is carried backward from the front.
In foretell waste liquid bag production line's gas tightness detection device, the front and back end of frame three all is provided with from the driving wheel subassembly, the conveyer belt cover is established on from the driving wheel subassembly and can rotate, the frame is three to go up along transversely setting up and be located the supporting beam of conveyer belt below, the supporting beam has a plurality of and arranges along longitudinal separation, the upper surface and the conveyer belt of supporting beam laminate mutually.
In the above-mentioned gas tightness detection device of waste liquid bag production line, this gas tightness detection mechanism still includes that the front and back end of frame three all is provided with decides the material subassembly, decide the material subassembly including fixing support one on frame three, being located the pressure flitch of conveyer belt top and fixing the cylinder six that drives the pressure flitch and go up and down on support one. Through the setting of this structure, before the gas measurement, the six drive pressure flitchs of cylinder descend and make and press the flitch to compress tightly on the waste liquid bag, because the front and back end of frame three all is provided with decides the material subassembly, place a plurality of waste liquid bag on the conveyer belt and be interconnect together, two pressure flitchs compress tightly the location with the waste liquid bag on the conveyer belt front and back end, avoid the waste liquid bag along transversely taking place the position drunkenness on the conveyer belt, guarantee to survey the gas subassembly can be accurate insert in the pocket of waste liquid bag.
In foretell airtightness detection device of waste liquid bag production line, this gas tightness detection mechanism is still including setting up the spacing subassembly in frame three, spacing subassembly is including fixing support two in frame three and limiting plate one and limiting plate two of setting on support two, limiting plate one and limiting plate two all are located the top of conveyer belt, limiting plate one and limiting plate two all are rectangular shape and set up along the length direction of conveyer belt, be formed with the guide way between limiting plate one and the limiting plate two. Through the setting of this structure, the waste liquid bag includes the bag body, hose connection portion has on the lateral wall of the bag body, the last inclined plane that has of hose connection portion, the waste liquid bag is along the in-process of transverse transport, hose connection portion is located between limiting plate one and the limiting plate two, and limiting plate two pastes mutually with the inclined plane and leans on, limiting plate one and two pairs of hose connection portion of limiting plate are vertically carried on spacingly, and then vertically carry on spacingly to the waste liquid bag edge, avoid the waste liquid bag to take place longitudinal offset along transverse transport's in-process.
In the above air tightness detection device for the waste liquid bag production line, rubber pads are fixed on the lower surface of the pressing block and the lower surface of the pressing plate, and the rubber pads are located above the conveyer belt. Through the setting of this structure, compress tightly the location through the waste liquid bag of cushion on with the conveyer belt, improve the briquetting, press the frictional force between flitch and the waste liquid bag, and then improve and compress tightly the location effect to the waste liquid bag.
Compared with the prior art, the air tightness detection device of the waste liquid bag production line has the following advantages: after the air tightness detection device is used for detecting the air tightness of the waste liquid bag, the time required by the inflation and the exhaust of the waste liquid bag is short, the time required by the air tightness detection of the single waste liquid bag is obviously shortened, and the efficiency of the air tightness detection of the waste liquid bag is greatly improved.
Drawings
Fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is a schematic perspective view of the waste liquid bag transfer line according to the present invention.
Fig. 3 is a schematic sectional view showing the waste liquid bag transfer line according to the present invention.
Fig. 4 is a partial perspective view of the waste liquid bag transfer line according to the present invention.
Fig. 5 is a schematic perspective view of the bag pressing mechanism of the present invention.
Fig. 6 is a side view of the bag pressing mechanism of the present invention.
Fig. 7 is a partial perspective view of the bag pressing assembly of the present invention.
Fig. 8 is a schematic perspective view of the air pressure measuring mechanism of the present invention.
In the figure, 1, a waste liquid bag conveying line; 11. a third frame; 12. a conveyor belt; 13. a fourth guide rail; 14. a carriage; 15. a fifth cylinder; 16. briquetting; 17. cushion blocks; 18. a driven wheel assembly; 19. a support beam; 2. a pressure measuring mechanism; 21. a first machine frame; 22. a pressure measurement assembly; 221. an electromagnetic valve; 222. a barometer; 223. a third guide rail; 224. a translation plate; 225. a cylinder IV; 226. a fixed block; 227. measuring the gas pipe; 3. a bag pressing mechanism; 31. a second frame; 32. a bag pressing assembly; 320. a second guide rail; 321. pressing a plate; 322. a first cylinder; 323. a fixing plate; 324. a first guide rail; 325. a slider; 326. a cylinder clamping finger; 327. a second air cylinder; 328. mounting a plate; 329. a third air cylinder; 4. a material fixing component; 41. a first bracket; 42. a material pressing plate; 43. a sixth air cylinder; 5. a limiting component; 51. a second bracket; 52. a first limiting plate; 53. a second limiting plate; 6. a guide groove; 7. a rubber pad; 8. a bag body; 81. a hose connection portion; 82. an inclined surface.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
As shown in fig. 1, this gas tightness detection device of waste liquid bag production line, including along the waste liquid bag transfer chain 1 of horizontal setting, survey air pressure mechanism 2, press a bag mechanism 3, decide material subassembly 4 and spacing subassembly 5, press bag subassembly 32 and survey air pressure subassembly 22 and all have a plurality of, a plurality of presses bag subassembly 32 to set up along horizontal interval on frame two 31, a plurality of surveys air pressure subassembly 22 and sets up along horizontal interval on frame one 21, presses bag subassembly 32 and surveys air pressure subassembly 22 one-to-one.
As shown in fig. 2, 3 and 4, the waste liquid bag conveying line 1 includes a third frame 11, a conveying belt 12 disposed on the third frame 11, a fourth guide rail 13 disposed on the third frame 11 in a transverse direction, a carriage 14 disposed on the fourth guide rail 13 in a transverse sliding manner, and a driving member for driving the carriage 14 to slide in a transverse direction, the driving member is a motor-matched screw-nut mechanism, driven wheel assemblies 18 are disposed at front and rear ends of the third frame 11, the conveying belt 12 is sleeved on the driven wheel assemblies 18 and can rotate, a support beam 19 disposed on the third frame 11 in a transverse direction and located below the conveying belt 12, the support beam 19 has a plurality of parts and is arranged at intervals in a longitudinal direction, and an upper surface of the support beam 19 is attached to the conveying belt 12. The left side and the right side of the conveying belt 12 are provided with a five-cylinder 15 fixed on the carriage 14, a press block 16 is connected to a piston rod of the five-cylinder 15, the five-cylinder 15 can drive the press block 16 to lift, at least part of the press block 16 is located above the conveying belt 12, a cushion block 17 is fixed on the carriage 14, the cushion block 17 is located below the conveying belt 12, the upper end face of the cushion block 17 is attached to the conveying belt 12, the cushion block 17 and the press block 16 are arranged oppositely, and the cushion block 17 is located between two adjacent supporting beams 19.
When the waste liquid bags produced by the waste liquid bag production line are not cut, the waste liquid bags and the waste liquid bags are connected together, therefore, a plurality of waste liquid bags are sequentially connected to form a strip shape, part of the waste liquid bags are placed on the conveying belt 12, the air cylinder five 15 drives the pressing block 16 to move downwards so that the pressing block 16 is pressed on the waste liquid bags, the cushion block 17 and the pressing block 16 clamp the waste liquid bags and the conveying belt 12 together, the driving piece drives the carriage 14 to move transversely, the carriage 14 moves towards the rear end of the rack three 11 and further drives the cushion block 17 and the pressing block 16 to move towards the rear end of the rack three 11, the cushion block 17 and the pressing block 16 drive the conveying belt 12 to rotate and drive the waste liquid bags to move backwards transversely, because the cushion block 17 and the pressing block 16 clamp the conveying belt 12 and the waste liquid bags all the time, when the waste liquid bags move backwards in place, the waste liquid bags cannot move transversely, and the formation of the movement of the waste liquid bags is the sliding stroke of the carriage 14, the tradition adopts motor drive to rotate from driving wheel subassembly 18, and then drives conveyer belt 12 and rotate, and conveyer belt 12 drives the waste liquid bag along lateral shifting, and when the motor stopped output power, conveyer belt 12 also stall, and the waste liquid bag relies on inertia to continue to move forward certain distance this moment, leads to the waste liquid bag along horizontal drunkenness, and the sack in waste liquid area can't align with the tip of gas detection pipe, and then can't accomplish the gas detection. Supporting beam 19's setting then plays the effect of support to conveyer belt 12, make conveyer belt 12 keep the level form, guarantee that the waste liquid bag is the level and places on conveyer belt 12, cushion 17 is located between two adjacent supporting beam 19 and makes cushion 17 along lateral shifting's in-process, two supporting beam 19 play the effect of direction to cushion 17, guarantee cushion 17 and briquetting 16 and do not take place the skew at the in-process along lateral shifting, and then the waste liquid bag can not take place the skew at the in-process along lateral shifting yet, improve the stability that the waste liquid bag carried.
Furthermore, the air tightness detection mechanism further comprises a frame III 11, wherein the front end and the rear end of the frame III are provided with a material fixing component 4, and the material fixing component 4 comprises a support I41 fixed on the frame III 11, a material pressing plate 42 positioned above the conveying belt 12 and a cylinder six 43 fixed on the support I41 and used for driving the material pressing plate 42 to ascend and descend. After the waste liquid bag is conveyed forwards for a certain distance, the pressing plate 42 is driven by the six 43 cylinders to move downwards, the pressing plate 42 compresses the waste liquid bag on the conveying belt 12, and the waste liquid bag is prevented from moving along the transverse direction.
Further, this gas tightness detection mechanism is still including setting up spacing subassembly 5 in three 11 of frame, and spacing subassembly 5 is including fixing two 51 of support on three 11 of frame and setting up two 52 of limiting plate and two 53 of limiting plate on two 51 of support, and first 52 of limiting plate and two 53 of limiting plate all are located the top of conveyer belt 12, and first 52 of limiting plate and two 53 of limiting plate all are rectangular shape and set up along the length direction of conveyer belt 12, are formed with guide way 6 between first 52 of limiting plate and the two 53 of limiting plate. The waste liquid bag includes the bag body 8, hose connection portion 81 has on the lateral wall of the bag body 8, inclined plane 82 has on the hose connection portion 81, the waste liquid bag is at the in-process along lateral transport, hose connection portion 81 is located between two 52 of limiting plate and the limiting plate 53, and two 53 of limiting plate are leaned on with inclined plane 82 mutually, limiting plate one 52 and two 53 of limiting plate are vertical to hose connection portion 81 along carrying on spacingly, and then vertical spacing of carrying on the waste liquid bag edge, avoid the waste liquid bag to take place longitudinal offset along lateral transport's in-process. The rubber mat 7 is fixed on the lower surface of the pressing block 16 and the lower surface of the pressing plate 42, and the rubber mat 7 is positioned above the conveying belt 12.
As shown in fig. 1, 5 and 6, the bag pressing mechanism 3 includes a second frame 31 and a bag pressing assembly 32 disposed on the second frame 31, the bag pressing assembly 32 corresponds to the air pressure measuring assembly 22, and the bag pressing assembly 32 includes a pressing plate 321 located above the conveyor belt 12 and a first cylinder 322 disposed on the second frame 31 for driving the pressing plate 321 to move up and down relative to the conveyor belt 12. When the waste liquid bag is positioned under the pressing plate 321, the first air cylinder 322 drives the pressing plate 321 to descend so that the pressing plate 321 presses the waste liquid bag on the conveying belt 12, the pressing plate presses 321 on the waste liquid bag and collapses the waste liquid bag, so that the air in the waste liquid bag is basically completely discharged, and after the pressing plate presses and positions the waste liquid bag, one end of the air measuring pipe 227 is conveniently and accurately inserted into the opening of the waste liquid bag,
as shown in fig. 8, the air pressure measuring assembly 22 includes an electromagnetic valve 221, an air pressure gauge 222, a guide rail three 223 longitudinally arranged on the rack one 21, a translation plate 224 slidably arranged on the guide rail three 223, a cylinder four 225 fixed on the rack one 21 and driving the translation plate 224 to slide longitudinally, a fixed block 226 arranged on the translation plate 224, and an air measuring pipe 227 positioned on the fixed block 226, the electromagnetic valve 221 has an air source interface 221a, an air charging interface 221b, and an air pressure detecting interface 221c, the air pressure gauge 222 is communicated with the air pressure detecting interface 221c, and the air charging interface 221b is communicated with one end of the air measuring pipe 227. The fourth cylinder 225 drives the translation plate 224 to move longitudinally so that one end of the gas measuring pipe 227 moves towards the waste liquid bag until one end of the gas measuring pipe 227 is inserted into the bag opening of the waste liquid bag, the gas source interface 221a is externally connected with a gas source and used for inflating the waste liquid bag, and after the waste liquid bag is inflated, the barometer 222 detects the gas pressure in the waste liquid bag so as to check whether the waste liquid bag leaks gas or not.
As shown in fig. 7, the bag pressing assembly 32 further includes a fixed plate 323 vertically disposed on the second frame 31, a first guide rail 324 vertically disposed on the fixed plate 323, a sliding block 325 slidably disposed on the first guide rail 324, a second air cylinder clamp 326 fixed on the sliding block 325, and a second air cylinder 327 fixed on the fixed plate 323 and driving the sliding block 325 to move vertically, wherein the second air cylinder clamp 326 is located on one side of the pressing plate 321, the bag pressing assembly 32 further includes a mounting plate 328 fixed on the second frame 31, a second guide rail 320 laterally disposed on the mounting plate 328, and a third air cylinder 329 fixed on the mounting plate 328, the fixed plate 323 is slidably disposed on the second guide rail 320, and the third air cylinder 329 drives the fixed plate 323 to slide laterally. After one end of the gas measuring pipe 227 is inserted into the bag opening of the waste liquid bag, the second air cylinder 327 drives the sliding block 325 to move downwards to enable the air cylinder clamp finger 326 to be close to the bag opening of the waste liquid bag, the air cylinder clamp finger 326 works and clamps and positions the bag opening of the waste liquid bag, the bag opening is tightly attached to the gas measuring pipe 227, and the gas leakage problem at the bag opening in the process of inflating the waste liquid bag is avoided.
In the process of inflating the waste liquid bag, the pressing plate 321 presses on the waste liquid bag, so that the expansion of the waste liquid bag is limited, after a small amount of gas is filled into the waste liquid bag, the waste liquid bag expands to a limit state and detectable gas pressure is formed inside the waste liquid bag, in a certain time period, when the internal gas pressure change of the waste liquid bag is within a normal range, the waste liquid bag is not leaked, when the internal gas pressure change of the waste liquid bag is beyond the normal range, the waste liquid bag is leaked, the leaked waste liquid bag cannot be put into use, after the gas pressure detection is finished, the gas measuring pipe 227 is pulled out of the waste liquid bag, because the gas filled into the waste liquid bag is less, and under the extrusion of the pressing plate 321, the gas in the waste liquid bag is instantly emptied after the gas measuring pipe 227 is pulled out of the waste liquid bag, after the internal gas in the waste liquid bag is emptied, the position of the waste liquid bag on the conveying belt 12 is basically kept in situ, the problem that the waste liquid bag shifts in the air tightness detection process is avoided. After the air tightness detection device is used for detecting the air tightness of the waste liquid bag, the time required by the inflation and the exhaust of the waste liquid bag is short, the time required by the air tightness detection of the single waste liquid bag is obviously shortened, and the efficiency of the air tightness detection of the waste liquid bag is greatly improved.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Claims (7)
1. An air tightness detection device of a waste liquid bag production line comprises a waste liquid bag conveying line (1) transversely arranged and an air pressure detection mechanism (2) located on one side of the waste liquid bag conveying line (1), wherein the air pressure detection mechanism (2) comprises a first rack (21) and an air pressure detection assembly (22) arranged on the first rack (21) and capable of detecting waste liquid bags on the waste liquid bag conveying line (1), the air tightness detection device is characterized in that the air pressure detection device further comprises a bag pressing mechanism (3), the bag pressing mechanism (3) comprises a second rack (31) and a bag pressing assembly (32) arranged on the second rack (31), the bag pressing assembly (32) corresponds to the air pressure detection assembly (22), the bag pressing assembly (32) comprises a pressing plate (321) located above the waste liquid bag conveying line (1) and a first air cylinder (322) arranged on the second rack (31) and used for driving the pressing plate (321) to lift relative to the waste liquid bag (1), the air pressure measuring assembly (22) comprises an electromagnetic valve (221), an air pressure meter (222), a guide rail III (223) longitudinally arranged on the rack I (21), a translation plate (224) slidably arranged on the guide rail III (223), a cylinder IV (225) fixed on the rack I (21) and used for driving the translation plate (224) to longitudinally slide, a fixed block (226) arranged on the translation plate (224), and an air measuring pipe (227) positioned on the fixed block (226), wherein the electromagnetic valve (221) is provided with an air source interface, an air charging interface and an air pressure detecting interface, the air pressure meter (222) is communicated with the air pressure detecting interface, and the air charging interface is communicated with one end of the air measuring pipe (227); when the waste liquid bag is positioned under the pressing plate (321), the first air cylinder (322) drives the pressing plate (321) to descend, so that the pressing plate (321) presses the waste liquid bag on the waste liquid bag conveying line (1) and collapses the waste liquid bag, and the air pressure measuring assembly (22) inflates the waste liquid bag; the waste liquid bag conveying line (1) comprises a rack III (11), a conveying belt (12) arranged on the rack III (11), a guide rail IV (13) transversely arranged on the rack III (11), a carriage (14) transversely arranged on the guide rail IV (13) in a sliding manner, and a driving piece for driving the carriage (14) to transversely slide, wherein a cylinder V (15) fixed on the carriage (14) is arranged on each of the left side and the right side of the conveying belt (12), a pressing block (16) is connected to a piston rod of the cylinder V (15), the cylinder V (15) can drive the pressing block (16) to lift, and at least part of the pressing block (16) is positioned above the conveying belt (12); be fixed with cushion (17) on planker (14), cushion (17) are located the below of conveyer belt (12) and the up end of cushion (17) pastes with conveyer belt (12) mutually and lean on, cushion (17) and briquetting (16) set up relatively, the front and back end of three (11) in the frame all is provided with from driving wheel subassembly (18), conveyer belt (12) cover is established and is rotated on driving wheel subassembly (18), support beam (19) along transversely setting up and being located conveyer belt (12) below on three (11) in the frame, supporting beam (19) have a plurality of and follow longitudinal separation and arrange, the upper surface and the conveyer belt (12) of supporting beam (19) are laminated mutually, cushion (17) are located between two adjacent supporting beam (19).
2. The airtightness detection apparatus for the waste liquid bag production line according to claim 1, wherein the bag pressing assembly (32) further comprises a fixing plate (323) vertically arranged on the second frame (31), a first guide rail (324) vertically arranged on the fixing plate (323), a sliding block (325) slidably arranged on the first guide rail (324), an air cylinder clamping finger (326) fixed on the sliding block (325), and a second air cylinder (327) fixed on the fixing plate (323) and driving the sliding block (325) to move vertically, wherein the air cylinder clamping finger (326) is located on one side of the pressing plate (321).
3. The airtightness detection apparatus for the waste liquid bag production line according to claim 2, wherein the bag pressing assembly (32) further comprises a mounting plate (328) fixed to the second frame (31), a second guide rail (320) transversely disposed on the mounting plate (328), and a third air cylinder (329) fixed to the mounting plate (328), the fixing plate (323) is slidably disposed on the second guide rail (320), and the third air cylinder (329) drives the fixing plate (323) to slide transversely.
4. The airtightness detection apparatus for the waste liquid bag production line according to any one of claims 1 to 3, wherein each of the bag pressing assemblies (32) and the air pressure measurement assemblies (22) has a plurality of pressure bag assemblies (32) arranged at intervals in a transverse direction on the second frame (31), the air pressure measurement assemblies (22) are arranged at intervals in a transverse direction on the first frame (21), and the bag pressing assemblies (32) and the air pressure measurement assemblies (22) are in one-to-one correspondence.
5. The airtightness detection device for the waste liquid bag production line according to claim 1, wherein the airtightness detection device is further provided with a material fixing assembly (4) at each of the front end and the rear end of the rack three (11), and the material fixing assembly (4) comprises a first support (41) fixed to the rack three (11), a material pressing plate (42) located above the conveyor belt (12), and a sixth air cylinder (43) fixed to the first support (41) and driving the material pressing plate (42) to ascend and descend.
6. The airtightness detection device for the waste liquid bag production line according to claim 1, further comprising a limiting component (5) arranged on a third rack (11), wherein the limiting component (5) comprises a second support (51) fixed on the third rack (11), and a first limiting plate (52) and a second limiting plate (53) arranged on the second support (51), the first limiting plate (52) and the second limiting plate (53) are both located above the conveyor belt (12), the first limiting plate (52) and the second limiting plate (53) are both in a long strip shape and arranged along the length direction of the conveyor belt (12), and a guide groove (6) is formed between the first limiting plate (52) and the second limiting plate (53).
7. The airtightness detection apparatus for the waste liquid bag production line according to claim 5, wherein the rubber pads (7) are fixed on the lower surface of the pressing block (16) and the lower surface of the pressing plate (42), and the rubber pads (7) are located above the conveyor belt (12).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010385114.8A CN111649882B (en) | 2020-05-09 | 2020-05-09 | Air tightness detection device of waste liquid bag production line |
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| CN202010385114.8A CN111649882B (en) | 2020-05-09 | 2020-05-09 | Air tightness detection device of waste liquid bag production line |
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| CN111649882B true CN111649882B (en) | 2022-03-08 |
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| US8534120B1 (en) * | 2012-09-14 | 2013-09-17 | Advanced Scientifics, Inc. | Test system and method for flexible containers |
| CN203310587U (en) * | 2013-06-18 | 2013-11-27 | 龙兴平 | Leak detection device used for transfusion bag automatic production line |
| CN206311288U (en) * | 2016-11-15 | 2017-07-07 | 美昕医疗器械（上海）有限公司 | A kind of medical bag gas inspection equipment |
| CN106644293A (en) * | 2017-01-07 | 2017-05-10 | 石家庄四药有限公司 | Sealing quality inspection device and inspection method for non-PVC soft bag transfusion |
| CN108482768B (en) * | 2018-03-14 | 2020-04-03 | 浙江金正检测有限公司 | Automatic detection system for food can airtightness of canned food |
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