CN219956823U - Detection device for automatically detecting air tightness of diaphragm - Google Patents

Abstract

The utility model discloses a detection device for automatically detecting the air tightness of a diaphragm, which relates to the technical field of detection of the air tightness of the diaphragm, wherein a piston rod of a vertical cylinder is fixedly arranged on the bottom surface of a jacking plate, the bottom of the jacking plate is provided with an air inlet nozzle communicated with a counter bore, and the air inlet nozzle is connected with an air compressor; the machine is also provided with a detection and lifting mechanism, the detection and lifting mechanism comprises a motor fixedly arranged on the machine and positioned on the right side of the through hole, a rotating shaft fixedly arranged on an output shaft of the motor, and a rotating plate fixedly arranged at the top of the rotating shaft, a compression cylinder is fixedly arranged on the top surface of the rotating plate, a pressure sensor is arranged at the top of the outer cover, an annular pressing plate positioned right above the counter bore is welded on an outer cylindrical surface of the lower end part of the outer cover, and an annular sucking disc fixedly arranged on the top surface of the annular pressing plate is sleeved on the outer cylindrical surface of the outer cover. The beneficial effects of the utility model are as follows: compact structure, greatly lighten workman's working strength, greatly improve gas tightness detection efficiency, degree of automation height.

Description

Detection device for automatically detecting air tightness of diaphragm

Technical Field

The utility model relates to the technical field of membrane air tightness detection, in particular to a detection device for automatically detecting the air tightness of a membrane.

Background

The structure of the diaphragm used by the valve is shown in fig. 1-2, the diaphragm comprises a diaphragm body 1, an annular sheet 2 is fixedly arranged on the outer cylindrical surface of the lower end part of the diaphragm body 1, an annular cavity 3 is arranged in the diaphragm body 1, and the diaphragm is arranged on a valve seat of a certain valve to play a role in sealing.

When such a diaphragm is mass-produced and molded, it is technically required to detect the tightness of the diaphragm, that is, to detect whether a cavity exists on the cylindrical surface of the diaphragm body 1 (the cavity is generated in the manufacturing process), and the tightness of the diaphragm is seriously affected by the existence of the cavity. A workshop adopts a detection tool as shown in fig. 3-4 to detect the tightness of the diaphragm, the detection tool comprises a machine table 4, a blind hole 5 is formed in the top surface of the machine table 4, the depth of the blind hole 5 is smaller than the thickness of the annular sheet 2, the blind hole 5 is matched with the outer contour of the annular sheet 2, an air inlet nozzle 6 communicated with the blind hole 5 is arranged at the bottom of the machine table 4, and the air inlet nozzle 6 is connected with an air compressor; the top of board 4 has set firmly portal frame 7, has set firmly on the crossbeam of portal frame 7 and has pressed cylinder 8, and the piston rod that compresses tightly cylinder 8 runs through the crossbeam setting, and has set firmly the dustcoat 9 that is located directly over blind hole 5 on the extension, and the top of dustcoat 9 is provided with pressure sensor 10, and pressure sensor 10 is connected through the signal line with the controller, has welded annular clamp plate 11 on the outer cylinder of dustcoat 9 lower extreme.

The operation method for detecting the tightness of the diaphragm by using the detection tool by workers is as follows:

s1, a worker takes out a membrane to be detected from a charging basket, and embeds an annular sheet 2 of the membrane into a blind hole 5 from top to bottom, so that the membrane is positioned;

s2, a worker controls a piston rod of the compression cylinder 8 to extend downwards, the piston rod drives the outer cover 9 to move downwards, the outer cover 9 drives the annular pressing plate 11 to move downwards, and the annular pressing plate 11 presses on the annular piece 2 of the diaphragm, so that the diaphragm is fixed, as shown in FIG. 5;

s3, the worker opens the air compressor, the air compressor is used for introducing pressure gas into the air inlet nozzle 6, the pressure gas enters the annular cavity 3 of the diaphragm body 1, after the air compressor is used for introducing air for a period of time, if the pressure sensor 10 sends a pressure signal to the controller, the existence of a cavity on the diaphragm body 1 is indicated, the pressure gas in the annular cavity 3 flows into the outer cover 9 through the cavity, so that the pressure sensor 10 generates a pressure signal, and the worker judges that the diaphragm is a defective product at the moment; if the pressure sensor 10 does not send a pressure signal to the controller, it is indicated that no cavity exists in the diaphragm body 1, and at the moment, a worker judges that the diaphragm is a qualified product, so that the detection of the air tightness of the diaphragm is finally realized;

s4, after detection, the worker closes the air compressor, then controls the piston rod of the compression cylinder 8 to retract upwards, and the piston rod drives the outer cover 9 to move upwards, and the outer cover 9 is separated from the membrane;

s5, after the outer cover 9 is separated from the membrane, taking out the qualified products from the blind holes 5 by a worker, putting the qualified products into a finished product basket by the worker after taking out, or taking out the unqualified products from the blind holes 5 by the worker and rejecting the unqualified products into a waste basket so as to realize classification of the unqualified products and the qualified products;

s6, the repeated operation can continuously detect the air tightness of the plurality of diaphragms.

However, although the detection tool can detect the air tightness of the membrane, in the actual use process, the following technical defects still exist:

wherein, in step S5, after the membrane is detected, the qualified products need to be manually taken out from the blind holes 5 and put into the finished product basket, or the unqualified products need to be manually removed into the waste basket, which clearly increases the working strength of workers. In addition, the detection time of the air tightness of the follow-up diaphragm is increased, and the detection efficiency of the air tightness of the diaphragm is greatly reduced. Therefore, there is a need for a detection device that greatly reduces the work intensity of workers and greatly improves the air tightness detection efficiency.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provide the automatic detection device for detecting the air tightness of the diaphragm, which has the advantages of compact structure, great reduction of the working intensity of workers, great improvement of the air tightness detection efficiency and high degree of automation.

The aim of the utility model is achieved by the following technical scheme: the utility model provides an automatic detect detection device of diaphragm gas tightness, it includes the fixed plate that sets firmly under the board, set up the through-hole in the board, slidable mounting has the jacking board rather than matched with in the through-hole, enclose into the counter bore between the inner wall of jacking board's top surface and the through-hole, set firmly vertical cylinder on the fixed plate, the piston rod of vertical cylinder sets firmly on the bottom surface of jacking board, the bottom of jacking board is provided with the air inlet nozzle that communicates the counter bore, the air inlet nozzle is connected with the air compressor machine;

the machine is characterized in that a detection and lifting mechanism is further arranged on the machine, the detection and lifting mechanism comprises a motor, a rotating shaft and a rotating plate, the motor is fixedly arranged on the right side of the through hole, the rotating shaft is fixedly arranged on an output shaft of the motor, the rotating plate is fixedly arranged at the top of the rotating shaft, a compression cylinder is fixedly arranged on the top surface of the rotating plate, a piston rod of the compression cylinder downwards penetrates through the rotating plate, an outer cover with an opening downwards is fixedly arranged on an extending end, a pressure sensor is arranged at the top of the outer cover, an annular pressing plate is welded on an outer cylindrical surface of the lower end part of the outer cover and is positioned right above a counter bore, an annular sucking disc is sleeved on the outer cylindrical surface of the outer cover and fixedly arranged on the top surface of the annular pressing plate, a plurality of vacuum holes penetrating through the bottom surface of the annular pressing plate are formed in the circumferential direction of the bottom surface of the annular sucking disc, and the annular sucking disc is connected with a working port of a vacuum pump;

the machine is characterized in that a rejecting cylinder positioned on the right side of the through hole is arranged on the bottom surface of the machine, and a push plate is fixedly arranged at the acting end of a piston rod of the rejecting cylinder.

The through holes are matched with the outer contour of the annular piece.

The bottom surface of the machine table is fixedly provided with a plurality of supporting legs which are supported on the ground, and the fixing plate is welded between the supporting legs.

The vacuum pump is fixedly arranged on the top surface of the outer cover, a joint is arranged on the left side wall of the annular sucker, and the joint is connected with a working port of the vacuum pump through a pipeline.

The detection device further comprises a controller, wherein the controller is electrically connected with the vertical cylinder, the compression cylinder, the motor and the rejection cylinder through signal wires, and the pressure sensor is connected with the controller through signal wires.

The top surface of the machine table is provided with a finished product basket positioned on the right side of the motor, and the fixing plate is provided with a waste basket positioned on the left side of the vertical cylinder.

The utility model has the following advantages: compact structure, greatly lighten workman's working strength, greatly improve gas tightness detection efficiency, degree of automation height.

Drawings

FIG. 1 is a schematic diagram of a membrane;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a schematic structural diagram of a detection tool used in a workshop;

FIG. 4 is a schematic view of the A-direction of FIG. 3;

FIG. 5 is a schematic diagram of an annular pressure plate of a detection tool compacting an annular sheet of a diaphragm;

FIG. 6 is a schematic diagram of the structure of the present utility model;

FIG. 7 is an enlarged partial view of section I of FIG. 6;

FIG. 8 is a B-B cross-sectional view of FIG. 6;

FIG. 9 is an enlarged partial view of section II of FIG. 6;

FIG. 10 is a schematic view of a positioning diaphragm of the present utility model;

FIG. 11 is a schematic view of an annular pressure plate of the present utility model pressing against an annular sheet of membrane;

FIG. 12 is a schematic view of a jacking plate moving reject downward;

FIG. 13 is a schematic view of a pusher plate pushing reject into a waste basket;

FIG. 14 is a schematic view of the annular suction cup lifting the good;

FIG. 15 is a schematic illustration of the rotation of a good over a product basket;

FIG. 16 is a schematic view of a good falling within a finished basket under its own weight;

in the figure, the membrane comprises a 1-membrane body, a 2-annular piece, a 3-annular cavity, a 4-machine table, a 5-blind hole, a 6-air inlet nozzle, a 7-portal frame, an 8-compression cylinder, a 9-housing, a 10-pressure sensor, an 11-annular pressing plate, a 12-fixing plate, a 13-through hole, a 14-jacking plate, a 15-vertical cylinder, a 16-motor, a 17-rotating shaft, a 18-rotating plate, a 19-annular sucker, a 20-vacuum hole, a 21-rejecting cylinder, a 22-push plate, a 23-pipeline, a 24-finished product basket, a 25-waste basket, a 26-unqualified product and a 27-qualified product.

Detailed Description

The utility model is further described below with reference to the accompanying drawings, the scope of the utility model not being limited to the following:

as shown in fig. 6 to 9, the detection device for automatically detecting the air tightness of the diaphragm comprises a fixed plate 12 fixedly arranged under a machine table 4 and a through hole 13 formed in the machine table 4, wherein a plurality of supporting legs supported on the ground are fixedly arranged on the bottom surface of the machine table 4, the fixed plate 12 is welded between the supporting legs, the through hole 13 is matched with the outer contour of an annular sheet 2, a jacking plate 14 matched with the fixed plate is slidably arranged in the through hole 13, a counter bore is formed between the top surface of the jacking plate 14 and the inner wall of the through hole 13, a vertical cylinder 15 is fixedly arranged on the fixed plate 12, a piston rod of the vertical cylinder 15 is fixedly arranged on the bottom surface of the jacking plate 14, an air inlet nozzle 6 communicated with the counter bore is arranged at the bottom of the jacking plate 14, and the air inlet nozzle 6 is connected with an air compressor.

As shown in fig. 6 to 9, the machine 4 is further provided with a detection and lifting mechanism, the detection and lifting mechanism comprises a motor 16 fixedly arranged on the machine 4 and positioned on the right side of the through hole 13, a rotating shaft 17 fixedly arranged on an output shaft of the motor 16, and a rotating plate 18 fixedly arranged at the top of the rotating shaft 17, a compression cylinder 8 is fixedly arranged on the top surface of the rotating plate 18, a piston rod of the compression cylinder 8 downwards penetrates through the rotating plate 18, an outer cover 9 with a downward opening is fixedly arranged on an extending end, a pressure sensor 10 is arranged at the top of the outer cover 9, an annular pressing plate 11 positioned right above the counter bore is welded on an outer cylindrical surface of the lower end of the outer cover 9, an annular sucking disc 19 fixedly arranged on the top surface of the annular pressing plate 11 is sleeved on the outer cylindrical surface of the outer cover 9, a plurality of vacuum holes 20 penetrating through the bottom surface of the annular pressing plate 11 are formed in the circumferential direction of the bottom surface of the annular sucking disc 19, and the annular sucking disc 19 is connected with a working port of a vacuum pump; the bottom surface of the machine 4 is provided with a removing cylinder 21 positioned on the right side of the through hole 13, and the acting end of a piston rod of the removing cylinder 21 is fixedly provided with a push plate 22. The top surface of the machine table 4 is provided with a finished product basket 24 positioned on the right side of the motor 16, and the fixed plate 12 is provided with a waste basket 25 positioned on the left side of the vertical air cylinder 15.

The vacuum pump is fixedly arranged on the top surface of the outer cover 9, and a joint is arranged on the left side wall of the annular sucker 19 and is connected with a working port of the vacuum pump through a pipeline 23. The detection device further comprises a controller, wherein the controller is electrically connected with the vertical cylinder 15, the compression cylinder 8, the motor 16 and the rejection cylinder 21 through signal wires, and the pressure sensor 10 is connected with the controller through signal wires.

The working process of the utility model is as follows:

s1, a worker takes out a membrane to be detected from a charging basket, inserts an annular sheet 2 of the membrane into a counter bore from top to bottom, and supports the annular sheet 2 on the top surface of a jacking plate 14, so that the membrane is positioned, and the annular sheet 2 is positioned right below an annular pressing plate 11 at the moment as shown in FIG. 10;

s2, a worker controls a piston rod of the compression cylinder 8 to extend downwards, the piston rod drives the outer cover 9 to move downwards, the outer cover 9 drives the annular pressing plate 11, the pressure sensor 10, the vacuum pump and the annular sucker 19 to move downwards synchronously, when the piston rod of the compression cylinder 8 extends completely, the bottom surface of the annular pressing plate 11 presses the annular piece 2 of the diaphragm, as shown in FIG. 11, so that the diaphragm is fixed, the diaphragm body 1 is just positioned in the outer cover 9, and the annular piece 2 shields the vacuum hole 20;

s3, the air compressor is opened by a worker, the air compressor is used for introducing pressure gas into the air inlet nozzle 6, the pressure gas enters the annular cavity 3 of the diaphragm body 1, after the air compressor is used for ventilating for a period of time, if the pressure sensor 10 sends a pressure signal to the controller, the existence of a cavity on the diaphragm body 1 is indicated, the pressure gas flows into the outer cover 9 through the cavity so that the pressure sensor 10 generates the pressure signal, the worker judges that the diaphragm is a defective product, at the moment, the controller controls the piston rod of the vertical air cylinder 15 to retract downwards, the piston rod drives the jacking plate 14 to move downwards, the jacking plate 14 drives the defective product 26 to move downwards, as shown in fig. 12, after the piston rod of the vertical air cylinder 15 is completely retracted, the defective product 26 just corresponds to the push plate 22 on the rejection air cylinder 21, then the controller controls the piston rod of the rejection air cylinder 21 to extend leftwards, the push plate 22 is driven by the piston rod to move leftwards, and the push plate 22 pushes the defective product 26 on the jacking plate 14 into the waste basket 25, as shown in fig. 13, and therefore, the rejection of the defective product 26 is achieved;

if the pressure sensor 10 does not send a pressure signal to the controller, it is indicated that a cavity does not exist on the diaphragm body 1, at the moment, a worker judges that the diaphragm is an acceptable product, at the moment, the controller controls the vacuum pump to start, the vacuum pump pumps vacuum to the inner cavity of the annular sucker 19 and the vacuum hole 20, under negative pressure, the annular piece 2 of the diaphragm is adsorbed on the annular pressing plate 11, then the piston rod of the compression cylinder 8 is controlled to retract upwards, the piston rod drives the outer cover 9 to move upwards, the outer cover 9 drives the annular pressing plate 11, the vacuum pump and the annular sucker 19 to synchronously move upwards, the annular sucker 19 drives the annular piece 2 to upwards, and then drives the acceptable product 27 to move upwards, as shown in fig. 14, after the piston of the compression cylinder 8 is completely retracted, the motor 16 is controlled, the motor 16 drives the rotating shaft 17 to drive the rotating plate 18 to rotate, the compression cylinder 8 drives the outer cover 9, the annular sucker 19 and the acceptable product 27 to synchronously rotate, after the acceptable product 27 moves to the right above the finished product basket 24, as shown in fig. 15, the annular piece 2 of the acceptable product 27 is not adsorbed on the annular sucker 19 again, the gravity force of the acceptable product 27 is synchronously moved upwards, and the acceptable product 27 falls down in the finished product basket 24, as shown in fig. 16, and the acceptable product is automatically detected in the automatic basket 26, and finally the acceptable product is classified as shown in the diagram 26;

s4, repeating the operations of the steps S1 to S3, so that the air tightness of the plurality of diaphragms can be continuously detected.

In step S3, after the air tightness of the membrane is detected by the detection device, the qualified product 27 can be automatically placed into the finished product basket 24 by controlling the actions of the vertical air cylinder 15, the rejecting air cylinder 21, the motor 16, the compressing air cylinder 8 and the vacuum pump, and meanwhile, the unqualified product 26 is automatically rejected into the waste basket 25, so that the detection device is compared with the detection tool shown in fig. 3, and does not need to manually classify the unqualified product and the qualified product, thereby greatly reducing the working intensity of workers, simultaneously greatly shortening the detection time of the air tightness of the subsequent membrane, and further greatly improving the detection efficiency of the air tightness of the membrane.

Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (6)

1. An automatic detect detection device of diaphragm gas tightness, its characterized in that: the device comprises a fixed plate (12) fixedly arranged under a machine table (4), a through hole (13) formed in the machine table (4), a jacking plate (14) matched with the through hole (13) is arranged in the through hole (13) in a sliding manner, a counter bore is formed between the top surface of the jacking plate (14) and the inner wall of the through hole (13), a vertical air cylinder (15) is fixedly arranged on the fixed plate (12), a piston rod of the vertical air cylinder (15) is fixedly arranged on the bottom surface of the jacking plate (14), an air inlet nozzle (6) communicated with the counter bore is arranged at the bottom of the jacking plate (14), and the air inlet nozzle (6) is connected with an air compressor;

the machine table (4) is further provided with a detection and lifting mechanism, the detection and lifting mechanism comprises a motor (16) fixedly arranged on the machine table (4) and positioned on the right side of the through hole (13), a rotating shaft (17) fixedly arranged on an output shaft of the motor (16), a rotating plate (18) fixedly arranged at the top of the rotating shaft (17), a compression cylinder (8) is fixedly arranged on the top surface of the rotating plate (18), a piston rod of the compression cylinder (8) downwards penetrates through the rotating plate (18) and is fixedly provided with an outer cover (9) with an opening downwards arranged on the extending end, the top of the outer cover (9) is provided with a pressure sensor (10), an annular pressing plate (11) positioned right above the counter bore is welded on an outer cylindrical surface of the lower end of the outer cover (9), an annular sucking disc (19) fixedly arranged on the top surface of the annular pressing plate (11) is sleeved on an outer cylindrical surface of the outer cover, a plurality of vacuum holes (20) penetrating through the bottom surface of the annular pressing plate (11) are formed in the circumferential direction of the bottom surface of the annular sucking disc (19), and the annular sucking disc (19) is connected with a working port of a vacuum sucking disc pump;

the machine is characterized in that a rejecting cylinder (21) positioned on the right side of the through hole (13) is arranged on the bottom surface of the machine table (4), and a push plate (22) is fixedly arranged at the acting end of a piston rod of the rejecting cylinder (21).

2. The detection apparatus for automatically detecting air tightness of a diaphragm according to claim 1, wherein: the through holes (13) are matched with the outer contour of the annular piece (2).

3. The detection apparatus for automatically detecting air tightness of a diaphragm according to claim 1, wherein: the bottom surface of the machine table (4) is fixedly provided with a plurality of supporting legs which are supported on the ground, and the fixing plate (12) is welded between the supporting legs.

4. The detection apparatus for automatically detecting air tightness of a diaphragm according to claim 1, wherein: the vacuum pump is fixedly arranged on the top surface of the outer cover (9), a joint is arranged on the left side wall of the annular sucker (19), and the joint is connected with a working port of the vacuum pump through a pipeline (23).

5. The detection apparatus for automatically detecting air tightness of a diaphragm according to claim 1, wherein: the detection device further comprises a controller, wherein the controller is electrically connected with the vertical air cylinder (15), the compression air cylinder (8), the motor (16) and the rejection air cylinder (21) through signal wires, and the pressure sensor (10) is connected with the controller through the signal wires.

6. The detection apparatus for automatically detecting air tightness of a diaphragm according to claim 1, wherein: a finished product basket (24) positioned on the right side of the motor (16) is arranged on the top surface of the machine table (4), and a waste basket (25) positioned on the left side of the vertical air cylinder (15) is arranged on the fixed plate (12).