Device for testing air permeability of 3D (three-dimensional) screen cloth

Abstract

The utility model relates to the technical field of 3D (three-dimensional) screen cloth testing, in particular to a device for testing the air permeability of 3D screen cloth, which can be used for accurately and quickly testing the air permeability of the 3D screen cloth. Comprising a workbench which is fixedly arranged on the ground and comprises a fixing frame fixedly installed on the workbench and further comprises a bent pipe fixedly installed on the fixing frame; the lifting assembly is arranged on the workbench; the air injection mechanism is arranged on the lifting assembly, the vertical height is controlled through the lifting assembly, and the air injection mechanism is used for conveying compressed air; the testing mechanism is fixedly mounted on the workbench, is communicated with the bent pipe and is used for displaying a testing result; the testing mechanism further comprises a ventilation base which is fixedly installed on the workbench, an air channel is arranged in the ventilation base in a communicating mode, and the input end of the air channel is communicated with the output end of the bent pipe. The test tube is fixedly mounted on the ventilation base, and the bottom end of the test tube is communicated with the output end of the airway; the floating ball is arranged in the test tube in a sliding manner; and the scale marks are arranged on the outer side wall of the test tube.

Description

TECHNICAL FIELD

[0001] The utility model relates to 3D mesh testing technical field, in particular to a kind of 3D mesh air permeability testing device. BACKGROUND

[0002] In earphone industry, 3D mesh is widely used in earphone pad material manufacturing as an important material due to its good air permeability, comfort and durability; The special structure of 3D mesh can effectively disperse pressure during use, improve the comfort of wearing, and maintain the circulation of air in ear, reduce the discomfort when wearing for a long time.

[0003] However, with the continuous development of earphone industry, consumers have higher and higher requirements for earphones, especially more stringent requirements for the air permeability of earphone pad material; The air permeability directly affects the wearing experience of earphone and the health of ear; Therefore, it is particularly important to accurately and quickly test the air permeability of 3D mesh.

[0004] Traditional air permeability test method often has problems such as complicated test process, non-intuitive test result and low test efficiency, which cannot meet the demand of earphone industry for 3D mesh air permeability test. UTILITY MODEL CONTENT

[0005] To solve the above technical problems, the utility model provides a kind of 3D mesh air permeability testing device which can realize accurate and rapid test of 3D mesh air permeability.

[0006] The 3D mesh air permeability testing device of the utility model comprises:

[0007] Workbench is fixedly arranged on the ground, comprising fixed frame fixedly installed on workbench, further comprising elbow pipe fixedly installed on fixed frame;

[0008] Lifting assembly is arranged on workbench;

[0009] Jet mechanism is arranged on lifting assembly, vertical height is controlled by lifting assembly, and is used for conveying compressed air;

[0010] Test mechanism is fixedly installed on workbench and is communicated with elbow pipe, and is used for displaying test result;

[0011] Among them, test mechanism further comprises:

[0012] Ventilation base is fixedly installed on workbench, and air passage is arranged in ventilation base in communication, and input end of air passage is communicated with output end of elbow pipe;

[0013] Test pipe is fixedly installed on ventilation base, and bottom end is communicated with output end of air passage;

[0014] a floating ball is slidingly arranged inside the test tube;

[0015] a scale line is arranged on the outer wall of the test tube.

[0016] The 3D mesh cloth air permeability testing device further comprises a test mechanism.

[0017] The maintenance plug is screw-capped on the top end of the test tube, and the maintenance plug sealing cover is screw-capped on the top end of the test tube.

[0018] The 3D mesh cloth air permeability testing device further comprises a test mechanism.

[0019] The protective cover is screw-capped on the air base, the protective cover is arranged outside the test tube, and the protective cover is made of transparent material.

[0020] The 3D mesh cloth air permeability testing device further comprises a lifting assembly.

[0021] The lifting support is fixedly installed on the workbench.

[0022] The guide sliding support plate is fixedly installed on the lifting support.

[0023] The air cylinder is fixedly installed on the guide sliding support plate.

[0024] The two guide sliding rods are fixedly installed on the guide sliding support plate, and the two guide sliding rods are parallel to each other.

[0025] The sliding plate is slidingly connected with the two guide sliding rods, and the vertical height is adjusted by the air cylinder driving, so as to drive the air injection mechanism to adjust up and down.

[0026] The 3D mesh cloth air permeability testing device further comprises an air injection mechanism.

[0027] The lifting plate is fixedly installed on the sliding plate.

[0028] The gas conveying pipe is inserted into the lifting plate and is used for conveying compressed air.

[0029] The pressing block is fixedly sleeved on the bottom end of the gas conveying pipe and is used for fixing the mesh cloth to be tested.

[0030] The 3D mesh cloth air permeability testing device further comprises a pressing block.

[0031] The 3D mesh cloth air permeability testing device further comprises an air injection mechanism.

[0032] The four guide sliding sleeves are fixedly installed on the lifting plate and are arranged in a square shape.

[0033] The four guide sliding rods are slidingly arranged in the four guide sliding sleeves, and one boss is arranged on each guide sliding rod.

[0034] The positioning plate is fixedly installed at the bottom end of the four guide sliding rods, and the bottom end of the positioning plate is provided with four positioning holes arranged in a square shape.

[0035] The workbench further comprises:

[0036] The four positioning pins are fixedly installed on the fixing frame and arranged in a square shape.

[0037] The 3D mesh cloth air permeability testing device of the utility model, the air injection mechanism further comprises:

[0038] The four elastic springs are arranged between the lifting plate and the positioning plate, and the four elastic springs are respectively sleeved on the four guide sliding rods.

[0039] Compared with the prior art, the utility model has the beneficial effects that:

[0040] The scale line on the outer sidewall of the test tube is observed, and the corresponding air permeability value is read according to the rising height of the floating ball; by quantitatively analyzing the rising height of the floating ball, the air permeability of the 3D mesh cloth to be tested can be accurately evaluated, the accurate and rapid testing of the air permeability of the 3D mesh cloth can be realized, the problems of the traditional testing method, such as complexity and low efficiency, are avoided, and the reliability and accuracy of the testing are greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0041] The utility model will be further described below in combination with the drawings.

[0042] Figure 1 It is the structural schematic diagram of the utility model;

[0043] Figure 2 It is the cooperation structure schematic diagram of the elbow pipe and the testing mechanism;

[0044] Figure 3 It is the cooperation structure sectional view of the elbow pipe and the testing mechanism;

[0045] Figure 4 It is the test tube amplification structure schematic diagram;

[0046] Figure 5 It is the cooperation structure schematic diagram of the lifting assembly and the air injection mechanism;

[0047] Marked in the drawing: 1, workbench; 11, fixed frame; 12, elbow; 13, positioning pin; 2, lifting assembly; 21, lifting support; 22, guide sliding support plate; 23, air cylinder; 24, guide sliding bar; 25, sliding plate; 3, air injection mechanism; 31, lifting plate; 32, air conveying pipe; 33, pressing block; 34, guide sliding sleeve; 35, guide sliding rod; 36, boss; 37, positioning plate; 38, elastic spring; 4, testing mechanism; 41, air passage base; 42, air passage; 43, testing pipe; 44, floating ball; 45, scale line; 46, maintenance plug; 47, protective cover. DETAILED DESCRIPTION

[0048] The specific embodiments of the utility model are described in further detail below in combination with the drawings and examples. The following examples are used to illustrate the utility model, but not to limit the scope of the utility model.

[0049] As Figures 1 to 5 Indicated, the 3D mesh cloth air permeability testing device of the utility model, comprising:

[0050] Workbench 1 is fixedly arranged on the ground, comprising fixedly installed fixed frame 11 on workbench 1, still comprising elbow 12 of fixed installation on fixed frame 11;Elbow 12 is used to transport air, and the top end is provided with air inlet, when testing, only need to lay the mesh cloth to be tested on the top end of elbow 12, cover the air inlet of elbow 12 can;

[0051] Lifting assembly 2 is arranged on workbench 1;

[0052] Air injection mechanism 3 is arranged on lifting assembly 2, and the vertical height is controlled by lifting assembly 2, for conveying compressed air;Under the control action of lifting assembly 2, it is fixed to the elbow 12 where the mesh cloth to be measured is laid, and the output end of air injection mechanism 3 is communicated with the air inlet of elbow 12;

[0053] Testing mechanism 4 is fixedly installed on workbench 1, and is communicated with elbow 12, for showing test results;

[0054] Among them, testing mechanism 4 further comprises:

[0055] Air passage base 41 is fixedly installed on workbench 1, and air passage 42 is arranged in communication in the air passage base 41, and the input end of air passage 42 is communicated with the output end of elbow 12;

[0056] Testing pipe 43 is fixedly installed on air passage base 41, and the bottom end is communicated with the output end of air passage 42;It is arranged as hollow transparent glass tube, and the transparency is high, and the surface friction is small;

[0057] Floating ball 44 is slidably arranged in the testing pipe 43;Floating ball 44 is a hollow thin-walled plastic ball, and its own mass is very small;

[0058] A scale line 45 is arranged on the outer wall of the test tube 43, and is matched with the floating ball 44 to clearly indicate the height of the floating ball 44, so as to quantify the height of the floating ball 44;

[0059] The working process and principle of the device are as follows: the 3D mesh cloth to be tested is laid on the top end of the elbow pipe 12, ensuring that the mesh cloth completely covers the air inlet of the elbow pipe; the height of the lifting assembly 2 is adjusted, so that the jet mechanism 3 is in a standby state, i.e. located directly above the elbow pipe 12; the lifting assembly 2 starts to descend, so that the output end of the jet mechanism 3 is in communication with the air inlet of the elbow pipe 12 through the mesh cloth; the jet mechanism 3 starts to deliver compressed air, which enters the mesh cloth through the elbow pipe 12 and attempts to penetrate the air permeable holes of the mesh cloth; the air penetrating the mesh cloth then enters the air duct 42 in the air passage base 41 and continues to flow to the test tube 43; since the test tube 43 is a hollow transparent glass tube with small surface friction, the air flow can easily push the floating ball 44 to rise; the rising height of the floating ball 44 depends on the air permeability of the mesh cloth: the better the air permeability, the smoother the air flow, and the higher the floating ball rises; the scale line 45 on the outer wall of the test tube 43 is observed, and the corresponding air permeability value is read according to the rising height of the floating ball 44; by quantitatively analyzing the rising height of the floating ball, the air permeability of the 3D mesh cloth to be tested can be accurately evaluated, the accurate and rapid testing of the air permeability of the 3D mesh cloth can be realized, and the problems of complexity and low efficiency of the traditional testing method are avoided, greatly improving the reliability and accuracy of the test.

[0060] As shown in Figures 3 to 4 , the test mechanism 4 further comprises:

[0061] An inspection plug 46 is screw-capped on the top end of the test tube 43; the inspection plug 46 is screw-capped on the top end of the test tube 43;

[0062] When the air permeability test is performed, the maintenance plug 46 is in a state of being screwed on the top end of the test tube 43, ensuring that the air flow during the test is not disturbed by the outside world, and ensuring the accuracy and stability of the test; the air injection mechanism 3 sends compressed air to the 3D mesh fabric to be tested through the elbow pipe 12, the air that has penetrated the mesh fabric enters the air duct 42 in the air base 41, and finally flows into the test tube 43; when the test mechanism 4 needs to be maintained, cleaned or troubleshooting, the operator can rotate the maintenance plug 46 counterclockwise and unscrew it from the top end of the test tube 43; after the maintenance plug 46 is unscrewed, the inside of the test tube 43 can be easily accessed to check, clean or replace the floating ball 44, the inner wall of the test tube and the connection between the air duct 42 and the test tube 43; after maintenance or repair is completed, the operator re-screws the maintenance plug 46 on the top end of the test tube 43 and ensures its sealing to restore the normal working state of the test mechanism. The addition of the maintenance plug 46 not only improves the reliability and stability of the test mechanism, but also greatly simplifies the maintenance, cleaning and troubleshooting process.

[0063] As shown in Figures 2 to 3 , the test mechanism 4 further comprises:

[0064] The protective cover 47 is screwed on the air base 41, the protective cover 47 is covered outside the test tube 43, and the protective cover 47 is made of transparent material;

[0065] The protective cover 47 is screwed on the air base 41 to ensure a tight fit between the protective cover 47 and the air base 41; the protective cover 47 is covered outside the test tube 43, and since it is made of transparent material, it will not block the observer's observation of the inside of the test tube; the protective cover 47 can prevent dust, debris and other foreign matter from entering the inside of the test mechanism 4, thereby maintaining the cleanliness and stability of the test environment; when the test mechanism 4 needs to be maintained or repaired, the protective cover 47 can be easily unscrewed to expose the internal structure of the test tube 43 and the air base 41, facilitating cleaning, inspection or replacement of parts.

[0066] As shown in Figure 5 , the lifting assembly 2 comprises:

[0067] The lifting bracket 21 is fixedly installed on the workbench 1;

[0068] The guide sliding plate 22 is fixedly installed on the lifting bracket 21;

[0069] The air cylinder 23 is fixedly installed on the guide sliding plate 22;

[0070] The two guide sliding bars 24 are both fixedly installed on the guide sliding plate 22, and the two guide sliding bars 24 are parallel to each other;

[0071] Sliding plate 25, slidingly matched with two guide sliding bars 24, is driven to adjust vertical height by air cylinder 23, for driving jet mechanism 3 to adjust up and down;

[0072] The working process and principle of the lifting assembly 2 are as follows: the lifting support 21 is fixedly installed on the workbench 1 to provide stable support for the entire lifting assembly; the guide sliding support plate 22 is fixedly installed on the lifting support 21 as the installation basis of the air cylinder 23 and the guide sliding bars 24; the air cylinder 23 is fixedly installed on the guide sliding support plate 22 in a standby state, ready to receive a control signal to perform extension and contraction movement; the two guide sliding bars 24 are fixedly installed on the guide sliding support plate 22 in parallel to each other to provide a sliding track for the sliding plate 25; the sliding plate 25 is slidingly matched with the two guide sliding bars 24, initially located above the guide sliding bars 24 or at a predetermined position, and the jet mechanism 3 is installed on the sliding plate 25; when testing is needed, the air cylinder 23 is controlled to start elongation; as the air cylinder 23 elongates, the sliding plate 25 slides downward along the guide sliding bars 24, driving the jet mechanism 3 to descend together; when the jet mechanism 3 descends to align with the air inlet of the elbow pipe 12, the air cylinder 23 is stopped, and the air cylinder remains the current length, and the jet mechanism 3 also stabilizes; at this time, the output end of the jet mechanism 3 forms effective communication with the air inlet of the elbow pipe 12, and subsequent air permeability testing is performed, and the lifting assembly 2 realizes the up and down adjustment function of the jet mechanism 3, providing a stable and reliable lifting mechanism for the 3D mesh cloth air permeability testing device.

[0073] As shown in Figure 5 , the jet mechanism 3 comprises:

[0074] The lifting plate 31 is fixedly installed on the sliding plate 25;

[0075] The gas conveying pipe 32 is inserted into the lifting plate 31 for conveying compressed air;

[0076] The pressing block 33 is fixedly sleeved at the bottom end of the gas conveying pipe 32 for fixing the mesh cloth to be tested; it will not block the air passage of the gas conveying pipe 32, and will keep the air permeability of the gas conveying pipe 32 during testing, and will press the mesh cloth laid on the elbow pipe 12; it will not block the air passage of the gas conveying pipe 32, and will keep the air permeability of the gas conveying pipe 32 during testing, and will press the mesh cloth laid on the elbow pipe 12;

[0077] As the jet mechanism 3 descends, the pressing block 33 gradually approaches the mesh cloth to be tested laid on the top end of the elbow pipe 12; when the pressing block 33 contacts the mesh cloth to be tested and continues to descend, it will press the mesh cloth flat on the elbow pipe 12, while ensuring that the air passage of the gas conveying pipe 32 is not blocked; once the pressing block 33 fixes the mesh cloth to be tested and keeps the air permeability of the gas conveying pipe 32, compressed air begins to enter the elbow pipe 12 through the gas conveying pipe 32 and passes through the mesh cloth to be tested.

[0078] The rubber block 33 is a rubber cylinder; the rubber material has good elasticity and flexibility, which can adapt to the surface of the screen cloth of different shapes and sizes, and ensure that the screen cloth is not damaged or deformed during compression; the rubber material has a certain sealing performance, which can prevent compressed air from leaking between the rubber block 33 and the screen cloth, thereby ensuring the accuracy and reliability of the test; the rubber material has a certain wear resistance, which can maintain good shape and performance during multiple tests, prolonging the service life of the rubber block 33

[0079] As shown in Figure 5 , the air injection mechanism 3 further comprises:

[0080] Four guide sliding sleeves 34 are fixedly installed on the lifting plate 31 and arranged in a square shape;

[0081] Four guide sliding rods 35 are slidingly arranged in the four guide sliding sleeves 34, and each guide sliding rod 35 is provided with a boss 36;

[0082] A positioning plate 37 is fixedly installed at the bottom end of the four guide sliding rods 35, and the bottom end of the positioning plate 37 is provided with four positioning holes arranged in a square shape;

[0083] The workbench 1 further comprises:

[0084] Four positioning pins 13 are fixedly installed on the fixed frame 11, and the four positioning pins 13 are arranged in a square shape;

[0085] When the air injection mechanism 3 is lowered to a certain position, the positioning holes on the positioning plate 37 are aligned with the positioning pins 13 on the fixed frame 11; once the positioning holes on the positioning plate 37 are aligned with the positioning pins 13, the positioning plate 37 will be fixed by the positioning pins 13, thereby achieving precise positioning of the air injection mechanism 3 on the workbench 1; ensuring the stability and accuracy of the 3D screen cloth air permeability testing device.

[0086] As shown in Figure 5 , the air injection mechanism 3 further comprises:

[0087] Four elastic springs 38 are arranged between the lifting plate 31 and the positioning plate 37, and the four elastic springs 38 are respectively sleeved on the four guide sliding rods 35;

[0088] When the rubber block 33 of the air injection mechanism 3 contacts the screen cloth to be tested and continues to descend, the rubber block 33 will compress the screen cloth, and at the same time the elastic spring 38 will be further compressed; at this time, the positioning holes on the positioning plate 37 are aligned and contacted with the positioning pins 13 on the fixed frame 11, but due to the elastic force of the elastic spring 38, a certain contact pressure will be maintained between the positioning plate 37 and the positioning pins 13, ensuring the stability of the air injection mechanism 3 during operation.

[0089] The 3D mesh cloth air permeability testing device is characterized by common mechanical installation mode, connection mode or setting mode, and can achieve the beneficial effects.

[0090] The above is only the preferred embodiment of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the technical principles of the present application, a number of improvements and modifications can be made, and these improvements and modifications should be considered as the protection scope of the present application.

Claims

1. A 3D fabric air permeability testing device, characterized in that, The utility model relates to a kind of test device for testing the air permeability of cloth, including: Workbench, fixedly arranged on ground, including fixed mounting in the workbench Fixed frame, further including fixed mounting in the fixed frame Elbow pipe; Lifting assembly, arranged on the workbench; Jet mechanism, arranged on the lifting assembly, vertical height is controlled by the lifting assembly, for conveying compressed air; Test mechanism, fixedly installed on the workbench, in communication with the elbow pipe, for showing test results; Wherein, the test mechanism further includes: Ventilation base, fixedly installed on the workbench, the ventilation base is in communication inside gas passage, the input end of the gas passage is communicated with the elbow pipe output end; Test tube, fixedly installed on the ventilation base, bottom end is communicated with the gas passage output end; Floating ball, slidingly arranged in the test tube; Scale line, arranged on the test tube outer wall.

2. The 3D fabric air permeability testing device of claim 1, wherein, The test mechanism further includes: Maintenance plug, screw cap is installed on the top end of the test tube;Maintenance plug seal cap is installed on the top end of test tube.

3. The 3D fabric air permeability testing device of claim 1, wherein, The test mechanism further includes: Protective cover, screw cap is installed on the ventilation base, the protective cover is covered in the test tube outside, the protective cover is transparent material.

4. The 3D fabric air permeability testing device of claim 1, wherein, The lifting assembly includes: Lifting support, fixedly installed on the workbench; Guide sliding support plate, fixedly installed on the lifting support; Cylinder, fixedly installed on the guide sliding support plate; Two guide sliding bars, are fixedly installed on the guide sliding support plate, two The guide sliding bar is parallel to each other; Sliding plate, with two guide sliding bars slidingly combined, vertical height is adjusted by the cylinder drive, for driving jet mechanism up and down adjustment.

5. The 3D fabric air permeability testing device of claim 4, wherein, The jet mechanism includes: Hoisting plate, fixedly installed on the sliding plate; Gas pipe, inserted on the hoisting plate, for conveying compressed air; Press block, fixedly sleeved on the bottom end of the gas pipe, for fixing the cloth to be tested.

6. The 3D fabric air permeability testing device of claim 5, wherein, The press block is rubber cylinder.

7. The 3D fabric air permeability testing device of claim 6, wherein, The jet mechanism further includes: Four guide sliding sleeves, are fixedly installed on the hoisting plate, square arrangement; Four guide sliding rods, slidingly arranged in four guide sliding sleeves, each The guide sliding rod is provided with a boss; Positioning plate, fixedly installed on the bottom end of four guide sliding rods, the bottom end of the positioning plate is provided with four positioning holes, four Positioning hole square arrangement; The workbench further includes: Four positioning pins, are fixedly installed on the fixed frame, four The positioning pin square arrangement.

8. The 3D fabric air permeability testing device of claim 7, wherein, The jet mechanism further includes: Four elastic springs, are arranged between the hoisting plate and positioning plate, four Elastic spring is respectively sleeved on four guide sliding rods.

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