CN215811471U

CN215811471U - Tightness testing device

Info

Publication number: CN215811471U
Application number: CN202121948043.4U
Authority: CN
Inventors: 陈连云
Original assignee: Shanghai Wisdom Automation Co ltd
Current assignee: Shanghai Wisdom Automation Co ltd
Priority date: 2021-08-19
Filing date: 2021-08-19
Publication date: 2022-02-11
Anticipated expiration: 2031-08-19

Abstract

The embodiment of the application relates to a sealing performance testing device, the sealing performance testing device comprises a testing rack, at least one fixed cavity arranged on the testing rack, a first testing platform arranged on the testing rack and connected with the testing rack in a sliding mode, a first driving device arranged on the testing rack and configured to drive the first testing platform to move towards the direction close to and away from the fixed cavity, a cavity head arranged on the first testing platform, a pressure gauge arranged on the first testing platform, a second driving device, a second testing platform arranged on the second driving device, a detection rod arranged on the second testing platform and a controller used for data interaction with the first driving device and the second driving device, wherein the fixed cavity, the first cavity head, the pressure gauge and the detection rod are the same in number. The leakproofness testing arrangement disclosed in the embodiment of the application can improve the degree of automation to test piece leakproofness test.

Description

Tightness testing device

Technical Field

The application relates to the technical field of testing, in particular to a tightness testing device.

Background

After the sprayer nozzles and the like are produced, the tightness test is required, and in the batch production process, the production requirements cannot be met by the single manual test.

Disclosure of Invention

The embodiment of the application provides a leakproofness testing arrangement, can improve the degree of automation to test piece leakproofness test.

The above object of the embodiments of the present application is achieved by the following technical solutions:

the embodiment of the application provides a leakproofness testing arrangement, includes:

a test bench;

at least one fixed cavity arranged on the test bench;

the first test bench is arranged on the test bench and is in sliding connection with the test bench;

the first driving device is arranged on the test bench and is configured to drive the first test bench to move towards and away from the fixed cavity;

the cavity head is arranged on the first test bench;

the pressure gauge is arranged on the first test bench, and the input end of the pressure gauge is communicated with the inner space of the cavity head;

the second driving device is provided with a second test board and is configured to drive the second test board to move towards and away from the fixed cavity;

the detection rod is arranged on the second test board; and

the controller is used for carrying out data interaction with the first driving device and the second driving device;

wherein, the fixed cavity, the first cavity head, the pressure gauge and the detection rod are the same in number.

In a possible implementation manner of the embodiment of the present application, the cavity head is rotatably connected to the first test table;

the third driving device is arranged on the first test platform and is configured to drive the cavity head to rotate.

In a possible implementation manner of the embodiment of the application, the device further comprises a driven wheel arranged on the cavity head;

the adjacent driven wheels are abutted or meshed;

the output end of the third driving device is provided with a driving wheel which is abutted or meshed with one driven wheel;

the control end of the third driving device is connected to the controller.

In a possible implementation manner of the embodiment of the application, a pressure lever is arranged on the first test platform, and the pressure lever is configured to press a handle on the test piece.

In a possible implementation manner of the embodiment of the application, a chute is arranged on the first test board;

the pressing rod is provided with a bolt, and one end of the bolt penetrates through the sliding groove and then is fixed on the pressing rod.

In a possible implementation manner of the embodiment of the present application, a seal ring is disposed in the cavity head.

In a possible implementation manner of the embodiment of the application, an output end of the pressure gauge is connected with a signal input end of the controller;

the display unit is configured to display feedback data of the pressure gauge.

In one possible implementation of the embodiment of the present application, the display unit includes a display and/or an indicator light.

Drawings

Fig. 1 is a schematic use diagram of a tightness testing device according to an embodiment of the present application.

Fig. 2 is a schematic structural view based on fig. 1, in which parts are hidden.

Fig. 3 is a schematic connection diagram of a pressing rod and a first test platform according to an embodiment of the present disclosure.

Fig. 4 is a schematic structural view of a pressure lever provided by the embodiment of the present application, on which a round sleeve is added.

Fig. 5 is a schematic internal structural diagram of a cavity head according to an embodiment of the present disclosure.

Fig. 6 is a schematic diagram of a display unit according to an embodiment of the present application.

Fig. 7 is a schematic diagram of another display unit provided in an embodiment of the present application.

Fig. 8 is a block diagram schematically illustrating a structure of a controller according to an embodiment of the present disclosure.

Fig. 9 is a block diagram schematically illustrating a structure of another controller according to an embodiment of the present disclosure.

In the figure, 11, a test bench, 12, a first test bench, 13, a first driving device, 14, a cavity head, 15, a pressure gauge, 16, a second driving device, 17, a second test bench, 18, a detection rod, 21, a third driving device, 22, a pressure rod, 23, a chute, 24, a bolt, 25, a sealing ring, 26, a round sleeve, 111, a fixed cavity, 141, a driven wheel, 211, a driving wheel, 7, a display unit, 71, a display, 72, an indicator light, 6, a controller, 601, a CPU, 602, RAM, 603, ROM, 604 and a system bus.

Detailed Description

The technical solution of the present application will be described in further detail below with reference to the accompanying drawings.

Referring to fig. 1 and 2, a tightness testing device disclosed in an embodiment of the present application is mainly composed of a testing bench 11, a first testing bench 12, a first driving device 13, a cavity head 14, a pressure gauge 15, a second driving device 16, a controller 6, and the like, specifically, one or more fixing cavities 111 are formed in the testing bench 11, and the fixing cavities 111 are used for placing a test piece to be tested, which may be a nozzle.

For convenience of description, the test pieces are collectively referred to as a nozzle, but it should be noted that the sealing performance testing apparatus disclosed in the embodiment of the present application may also be used for sealing performance testing of other products similar to the nozzle.

The first testing platform 12 is mounted on the testing platform 11 and is slidably connected with the testing platform 11, and can move in the direction away from and close to the fixed cavity 111, the power for moving the first testing platform 12 is provided by the first driving device 13, and the first driving device 13 is fixedly mounted on the testing platform 11.

The working end of the first driving device 13 is connected to the first testing table 12, and drives the first testing table 12 to move away from and close to the fixed cavity 111.

In some possible implementations, the first driving device 13 uses an air cylinder or an electric cylinder, and a piston rod of the air cylinder or the electric cylinder is connected to the first test bench 12.

The first test bench 12 is further provided with a cavity head 14, the cavity head 14 can move along with the first test bench 12 towards the direction far away from and close to the fixed cavity 111, and the cavity head 14 is used for wrapping the working end of the spray head and mainly plays a role in sealing.

The number of cavity heads 14 is the same as the number of fixed cavities 111, i.e. each fixed cavity 111 corresponds to one cavity head 14.

The pressure gauge 15 is also installed on the first test bench 12, and the input end of the pressure gauge 15 is communicated with the inner space of the cavity head 14, so that the pressure inside the cavity head 14 can be displayed. After the working end of the spray head is wrapped, air is injected into the spray head, the air flows out of the working end of the spray head and flows into the cavity head 14, and whether the tightness of the spray head meets the requirement or not is judged through feedback of the air pressure value in the cavity head 14.

For example, when the sealing performance of the nozzle meets the requirement, the value displayed on the pressure gauge 15 ranges from 3.0 to 3.2, and in an actual test process, if the value displayed on the pressure gauge 15 is 2.8, the nozzle is in a gas leakage condition, and the nozzle is unqualified.

It should be understood that the spray head can reach the spray distance or the atomization effect during the working process, the pressure of the medium is required, and if the leakage condition occurs inside the spray head, the pressure of the medium is reduced, and the use requirement cannot be met. Alternatively, a part of the medium ejected from the head is toxic and/or corrosive, and this requires that the inside of the head is not broken, and the detection can be performed by the sealing test as well.

The second driving means 16 is provided with a second test station 17, and the second driving means 16 is used for driving the second test station 17 to move towards and away from the fixed chamber 111. The second test platform 17 is provided with test rods 18, and the number of the test rods 18 is the same as that of the fixed cavities 111 and corresponds to one another.

In some possible implementations, the second driving device 16 uses an air cylinder or an electric cylinder, and a piston rod of the air cylinder or the electric cylinder is connected to the second test bench 17.

When the second driving device 16 drives the second testing platform 17 to move towards the direction close to the first testing platform 12, the detection rod 18 can extend into the tested sprayer on the moving route; when the second driving device 16 drives the second testing platform 17 to move in a direction away from the first testing platform 12, the detection rod 18 can be pulled out of the tested nozzle.

The function of the check rod 18 is to inject a medium, which may be water or air in some possible implementations, into the interior of the spray head.

The controller 6 is used for data interaction with the first driving device 13 and the second driving device 16, so that automatic operation of the first driving device 13 and the second driving device 16 can be realized, and for workers, whether the tested spray head meets the requirement can be judged according to the value displayed on the pressure gauge 15 only by placing the spray head to be tested in the fixed cavity 111 on the test bench 11.

In some possible implementations, the controller 6 uses a PLC (programmable logic controller).

On the whole, the leakproofness testing arrangement that this application embodiment provided can carry out automated test to the leakproofness of shower nozzle, and in the test process, the staff will need the shower nozzle of test to place in the fixed chamber 111 on test bench 11, and the die cavity head 14 will be surveyed the work end parcel of shower nozzle and live, and then the measuring rod 18 inserts inside being surveyed the shower nozzle, begins to pour into the medium into being surveyed the shower nozzle.

By observing the value displayed on the pressure gauge 15, it can be determined whether the sealing performance of the nozzle corresponding to the pressure gauge 15 meets the requirement. After detection is finished, the cavity head 14 and the detection rod 18 are reset, and a worker classifies the spray heads according to a display result on the pressure gauge 15.

Referring to fig. 2, as an embodiment of the sealing performance testing apparatus provided by the present application, the connection manner of the cavity head 14 and the first testing table 12 is adjusted to be a rotational connection, and a third driving device 21 is added to the first testing table 12, wherein the third driving device 21 is used to drive the cavity head 14 to rotate.

It will be appreciated that some spray heads are of the type having a shut-off function, i.e. the spray head nozzle is rotatable, and when rotated to a sealing position, the spray head does not spray water, and when rotated to an operative position, the spray head sprays water.

After the third driving device 21 is added, the position of the nozzle on the spray head can be adjusted, for example, the nozzles of the spray head produced on the production line are all located at the sealing position, so that the nozzles need to be rotated to the working position during detection, and of course, the nozzles on the spray head can be rotated back to the sealing position again after the detection is completed.

If the nozzles of the spray heads produced on the production line are all located at the working positions, the nozzles on the spray heads can be rotated back to the sealing positions after the detection is finished.

In some possible implementations, the third driving device 21 may use a servo motor.

The third drive means 21 drive the rotation of the chamber head 14 in several ways,

first, each cavity head 14 is provided with a driven wheel 141, the output end of the third driving device 21 is provided with a driving wheel 211, the driving wheel 211 is abutted or meshed with one driven wheel 141, and the adjacent driven wheels 141 are abutted or meshed.

When the driving wheel 211 rotates, all the driven wheels 141 can be driven to rotate.

Secondly, a driven wheel 141 is mounted on each of the cavity heads 14, the output of the third drive means 21 is connected to one of the cavity heads 14, and the adjacent driven wheels 141 abut or mesh.

In the above two modes, the driving wheel 211 and the driven wheel 141 can use gears, and adjacent gears are connected together in a meshing mode, or can use friction wheels, and the working surfaces of adjacent friction wheels are contacted to perform transmission through friction force.

The control end of the third driving device 21 is connected to the controller 6, and can perform corresponding operations according to the work instruction issued by the controller 6.

It should be understood that some of the nozzles have handles, and the nozzles can be turned from the closed state to the open state only by pressing the handles, so as to please refer to fig. 1, as an embodiment of the tightness testing device provided by the application, the first testing platform 12 is provided with a pressing rod 22, the pressing rod 22 is configured to press the handles on the nozzles, and when the cavity head 14 wraps the working end of the nozzles, the pressing rod 22 presses the handles on the nozzles to the working position, so that the nozzles are in the open state.

Referring to fig. 1 and 3, as an embodiment of the sealing performance testing apparatus provided by the application, a sliding groove 23 is added on the first testing platform 12, and a bolt 24 is added on the pressing rod 22, a screw of the bolt 24 can be screwed into a threaded hole on the pressing rod 22 after passing through the sliding groove 23, and when a head of the bolt 24 is pressed on the first testing platform 12, the pressing rod 22 can be fixed on the first testing platform 12.

The chute 23 is used for adjusting the position of the pressing rod 22 on the first test platform 12, so that when the position of the pressing rod 22 changes, the moving distance of the handle on the spray head also changes, and spray heads of different models and sizes can be detected.

Referring to fig. 4, a rolling circular sleeve 26 may be added to the pressure lever 22, and the circular sleeve 26 rolls after the switch on the nozzle contacts, so that dynamic friction can be converted into static friction.

Referring to fig. 5, as a specific embodiment of the sealing performance testing apparatus provided by the application, a sealing ring 25 is additionally installed in the cavity head 14, and the sealing ring 25 is used for improving the sealing performance between the nozzle and the inner contact surface of the cavity head 14, so as to improve the detection accuracy.

It should be understood that the pressure gauge 15 detects the pressure of the medium discharged from the nozzle, and if the sealing performance between the nozzle and the inner contact surface of the cavity head 14 is not good, the detected value of the pressure gauge 15 may be smaller than the actual value, which may cause a false judgment and determine a qualified product as a non-qualified product.

As a specific implementation manner of the sealing performance testing device provided by the application, the output end of the pressure gauge 15 is connected with the signal input end of the controller 6, and the display unit 7 is added, and the display unit 7 is used for displaying the feedback data of the pressure gauge 15, so that the convenience of use is further improved.

It should be understood that, before the display unit 7 is not provided, the worker needs to individually observe the display on each pressure gauge 15, and when the number of pressure gauges 15 is large, the observation is inconvenient. The purpose of using the display unit 7 is to concentrate the display on these pressure gauges 15 on one screen for the convenience of the staff.

Referring to fig. 6, the display unit 7 may be a display 71, and the display 71 is divided into a plurality of display areas, each of which displays a value of one pressure gauge 15. Of course, the display area may be displayed by color, for example, green is displayed when the display area is qualified, and red is displayed when the display area is not qualified.

Referring to fig. 7, the display unit 7 may also be indicator lamps 72, the number of the indicator lamps 72 is the same as the number of the pressure gauges 15, and the indicator lamps 72 display red color, which indicates that the tightness test result of the corresponding nozzle is not qualified; the indicator light 72 is green, indicating that the sealing test result of the corresponding nozzle is acceptable.

Referring to fig. 8 and 9, it should be understood that the controller 6 may be a CPU, a microprocessor, an ASIC, or one or more integrated circuits for controlling the execution of the programs, and the controller 6 mainly includes a CPU601, a RAM602, a ROM603, and a system bus 604, wherein the CPU601, the RAM602, and the ROM603 are all connected to the system bus 604.

The first driving device 13, the second driving device 16 and the third driving device 21 are connected to the system bus 604 through a control circuit, the pressure gauge 15 is connected to the system bus 604 through a communication circuit, and the display unit 7 is connected to the system bus 604 through a display driver or a control circuit.

The embodiments of the present invention are preferred embodiments of the present application, and the scope of protection of the present application is not limited by the embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A tightness testing device, comprising:

a test bench (11);

at least one fixed chamber (111) provided on the test bench (11);

the first test bench (12) is arranged on the test bench (11) and is in sliding connection with the test bench (11);

a first driving device (13) provided on the test stage (11) and configured to drive the first test stage (12) to move in a direction to approach and move away from the fixed chamber (111);

a cavity head (14) arranged on the first test bench (12);

the pressure gauge (15) is arranged on the first test bench (12), and the input end of the pressure gauge (15) is communicated with the inner space of the cavity head (14);

the second driving device (16), a second test bench (17) is arranged on the second driving device (16), and the second driving device (16) is configured to drive the second test bench (17) to move towards and away from the fixed cavity (111);

a detection rod (18) arranged on the second test bench (17); and

a controller (6) for data interaction with the first drive means (13) and the second drive means (16);

the number of the fixed cavities (111), the number of the first cavity heads (14), the number of the pressure gauges (15) and the number of the detection rods (18) are the same.

2. A tightness testing device according to claim 1, characterized in that said cavity head (14) is rotatably connected to said first testing station (12);

and the device also comprises a third driving device (21) arranged on the first test bench (12), wherein the third driving device (21) is configured to drive the cavity head (14) to rotate.

3. A tightness testing device according to claim 2, further comprising a driven wheel (141) provided on the cavity head (14);

the adjacent driven wheels (141) are abutted or meshed;

the output end of the third driving device (21) is provided with a driving wheel (211), and the driving wheel (211) is abutted or meshed with one driven wheel (141);

the control end of the third driving device (21) is connected to the controller (6).

4. A tightness testing device according to claim 1, characterized in that said first testing station (12) is provided with a pressure bar (22), said pressure bar (22) being configured to press a handle on the testing member.

5. A tightness testing device according to claim 4, characterized in that said first testing table (12) is provided with a chute (23);

a bolt (24) is arranged on the pressure lever (22), and one end of the bolt (24) penetrates through the sliding groove (23) and then is fixed on the pressure lever (22).

6. A tightness testing device according to claim 1, characterized in that a sealing ring (25) is provided in said cavity head (14).

7. A tightness testing device according to any one of claims 1 to 6, characterized in that the output of the pressure gauge (15) is connected to the signal input of the controller (6);

the display device further comprises a display unit (7), wherein the display unit (7) is configured to display feedback data of the pressure gauge (15).

8. A tightness testing device according to claim 7, characterized in that said display unit (7) comprises a display (71) and/or an indicator light (72).