Leak protection glove sealing detection equipment and detection method thereof

Abstract

The invention relates to the technical field of glove quality detection, in particular to labor protection glove sealing detection equipment and a detection method thereof.The labor protection glove sealing detection equipment comprises a support, a control element and a detection groove, the support is provided with an air injection pipeline, the air injection pipeline is connected with an air cylinder, and the air cylinder is connected with a clamping assembly; the clamping assembly comprises a motor, a synchronous frame, a movable clamping plate and a fixed clamping plate, the motor is installed on the support, and the fixed clamping plate is located above the detection groove. The motor is controlled by the control element to drive the synchronous frame to slide, then the movable clamping plate is driven to move in parallel with the fixed clamping plate as the reference plane, and when the movable clamping plate and the fixed clamping plate are attached, the synchronous frame compresses the air cylinder to enable the air injection pipeline to spray air flow, so that the accuracy of insulating property detection of the labor protection gloves is guaranteed; and the convenience of self-checking of the working gloves by the user is improved.

Description

Technical Field

[0001] This invention relates to the field of glove quality testing technology, specifically to a sealing testing device and method for work gloves. Background Technology

[0002] Different types of work gloves are typically used in different work environments to protect workers' safety. For example, in factory electrical maintenance work, to avoid economic losses due to power outages, electricians often need to wear insulating gloves to connect and repair circuits while the power is on. However, when insulating gloves develop scratches and cracks on their surface, their sealing performance decreases, leading to reduced insulation. The failure of insulating gloves can affect the user's safe operation and may even cause accidents and tragedies. Therefore, to ensure that the insulation performance of insulating gloves meets the requirements, companies will send insulating gloves to relevant testing institutions for testing every six months in accordance with relevant regulations to ensure that their insulation performance meets the requirements.

[0003] Electricians must wear insulated gloves when performing switching operations and live-line maintenance in the factory's power distribution room. However, since the inside of electrical wires is made of metal, sharp wire ends or metal burrs can easily puncture and scratch the insulated gloves when trimming or splicing wires. The high frequency of use greatly increases the possibility of damage to the insulated gloves. However, the semi-annual inspection cannot guarantee that the insulation performance of the insulated gloves meets safety requirements after each use. Therefore, in order to ensure that the insulated gloves meet safety requirements to the greatest extent, companies will also periodically conduct sealing checks on the insulated gloves, and users will also perform a simple and quick self-check of the sealing of the insulated gloves before each use.

[0004] To address the aforementioned issues, a common existing testing method involves filling the insulating glove with a suitable amount of water and immersing a section of the glove in a testing tank. Voltage is applied by placing testing electrodes inside the glove and in the testing tank to detect any damage. While this method yields high accuracy, adding water inside the glove leaves it damp after testing, requiring an additional drying step. Therefore, this method lacks convenience and is unsuitable for self-testing of insulating gloves. In contrast, CN219589897U provides an insulating glove testing cabinet. This solution involves placing the insulating glove on an air supply pipe, manually pulling / pushing a clamping assembly, and using a connecting rod to press against the glove to introduce gas and test its internal pressure for a seal. This device effectively avoids the problem of dampness inside the insulating glove. However, manual operation is still required. Clamping components for insulating gloves still cannot meet the convenience of glove self-inspection, and the way the connecting rod abuts against the opening of the insulating glove cannot guarantee the seal at the opening of the insulating glove during testing. For example, CN217765410U provides an insulating glove sealing test device. This device monitors the pressure changes inside the insulating glove using a pressure sensor to test the seal. It uses rubber pads and rubber sleeves to contact and clamp the inner and outer walls of the insulating glove, thereby improving the seal during clamping and preventing air leakage during testing. It can enable the quick installation of insulating gloves for testing. However, this method requires maintaining a large pressure inside the insulating glove for a long time to observe pressure changes. Maintaining a large pressure for a long time can easily cause the insulating glove to reach its elastic limit and undergo permanent deformation. If the pressure value is too low, the air pressure change when there are small holes in the insulating glove will be too small, which will make the test time too long and may even lead to incorrect test results.

[0005] Therefore, in order to ensure the convenience and accuracy of self-inspection of insulating gloves and to ensure that insulating gloves are used in accordance with safety requirements, a sealing test device and its test method for labor protection gloves are proposed. Summary of the Invention

[0006] The purpose of this invention is to provide a sealing testing device and method for work gloves, in order to solve the problems that conventional techniques for self-testing the sealing performance of insulating gloves cannot guarantee the convenience of the self-testing process, and that the sealing performance of insulating gloves tested by pressure sensors has inaccurate test results, which leads to users failing to use unqualified insulating gloves under safety requirements.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A work gloves sealing test device and its test method include a support, a control element, and a test tank. The control element and the test tank are both mounted on the support. An air injection pipe is provided on the support, and one end of the air injection pipe is connected to a cylinder. A clamping assembly is connected to the cylinder. The clamping assembly includes a motor, a synchronous frame, a movable clamping plate, and a fixed clamping plate. The motor is mounted on the support, and the fixed clamping plate is located above the test tank. When the work gloves are placed on the fixed clamping plate and the air injection pipe is attached and immersed in the test tank, the control element controls the motor to drive the synchronous frame to slide, thereby causing the movable clamping plate to move parallel to the fixed clamping plate as a reference plane. When the movable clamping plate and the fixed clamping plate are in contact, the synchronous frame compresses the cylinder to cause the air injection pipe to eject airflow.

[0009] By setting up a clamping assembly, the opening of the insulating glove is placed on a fixed clamping plate. When the control element starts the motor, it controls the sliding drive of the synchronous frame to fit the movable clamping plate against the fixed clamping plate. The tight fit between the movable and fixed clamping plates ensures the sealing of the insulating glove opening, thereby improving the accuracy of the sealing test. The clamping assembly relies on the motor to automatically clamp the insulating glove, improving the sealing of the glove opening and the convenience of self-inspection. By setting up a cylinder connected to an air injection pipe, the compressed cylinder allows air to be introduced into the insulating glove through the air injection pipe, ensuring a positive pressure state inside the glove. This causes the insulating glove to expand and bulge, amplifying surface defects such as cracks and holes due to its own deformation. This improves the observability of defects such as damage to the insulating glove, thereby ensuring the accuracy of the test results.

[0010] Optionally, the clamping assembly can be a vise-type clamping mechanism or a flip-top clamping mechanism. The vise-type clamping mechanism has a limited opening and closing stroke, and when open, the movable jaw is located directly above the fixed jaw, which is inconvenient for placing the insulating glove for testing. As for the flip-top clamping mechanism, the opening gradually decreases during the closing and gradual contact of the two clamping plates. At this time, the friction between the surface of the insulating glove and the clamping plate will cause the insulating glove to move and become misaligned, or even wrinkle, which cannot guarantee its sealing performance. Therefore, the above two solutions are not preferred solutions of the present invention.

[0011] Preferably, the clamping assembly includes a motor, a lead screw, a guide rod, a timing frame, a rack, a gear, a first connecting rod, a second connecting rod, a movable clamping plate, and a fixed clamping plate. The motor, lead screw, and guide rod are all mounted on a bracket. The lead screw is connected to the motor. A timing frame is rotatably mounted on the lead screw. The timing frame is slidably connected to multiple guide rods. Racks are provided at both ends of the retainer. The two sides of the movable clamping plate are rotatably connected to one end of multiple first connecting rods, and the other ends of multiple first connecting rods are rotatably connected to the bracket. The two sides of the movable clamping plate are rotatably connected to one end of multiple second connecting rods, and the other ends of multiple second connecting rods are rotatably connected to the bracket. The first connecting rod is located above the second connecting rod. The fixed clamping plate is mounted on the bracket. The first connecting rod and the second connecting rod are of equal length and parallel. The gear is mounted on the end of the first connecting rod that is rotatably mounted to the bracket. The number of teeth on the rack is greater than or equal to 1 / 4 the number of teeth on the gear.

[0012] Preferably, the movable clamping plate is provided with a groove, and the fixed clamping plate is provided with a boss. The cross-sectional shape of the boss is an outwardly convex trapezoid, and the cross-sectional shape of the groove is an inwardly concave trapezoid that matches the boss. The depth of the groove is 3-5 mm greater than the depth of the boss.

[0013] Preferably, a locking buckle is hinged to the first connecting rod, a sliding surface is provided on the locking port, a locking pin is installed on the second connecting rod, a push rod and a second spring are installed on the synchronization frame, the push rod is slidably installed with the synchronization frame, and the two ends of the second spring are respectively connected to the synchronization frame and the push rod.

[0014] By setting up two connecting rods of equal and parallel length, each connected to a movable clamping plate and a fixed clamping plate respectively, the connecting rods rotate when the motor drives the synchronous frame to contact the rack and pinion. This causes the movable clamping plate to rotate around the plane of the fixed clamping plate under the action of the connecting rods. When the movable clamping plate and the fixed clamping plate are in contact, the movable clamping plate slides parallel to each other from above, preventing slippage of the insulating glove during clamping and ensuring a proper seal. Furthermore, when the movable clamping plate is open, it is positioned slightly above and to the side of the fixed clamping plate, preventing obstruction and improving the ease of glove placement and testing. The synchronous frame ensures consistent clamping force at both ends of the movable clamping plate during operation, preventing uneven clamping force that could lead to poor sealing of a single glove and affect test results, further improving the accuracy of insulating glove testing.

[0015] By providing a groove on the movable clamping plate and a boss on the fixed clamping plate, the cross-sectional shape of the boss is an outwardly convex trapezoid, and the cross-sectional shape of the groove is an inwardly concave trapezoid that matches the boss. When the movable clamping plate and the fixed clamping plate are in contact, the insulating glove fits along the shape of the groove and the boss under the cooperation of the groove and the boss. The groove depth is greater than or equal to the boss depth by 3-5mm, so that when the groove and the boss are in contact, the two inclined surfaces of the boss contact the two inclined surfaces of the groove, leaving a cavity in the middle to allow the insulating glove to retain a certain elasticity. This allows the two inclined surfaces of the boss and the two inclined surfaces of the groove to make flat contact with the surface of the insulating glove, further improving the sealing performance of the clamping assembly and thus ensuring the accuracy of the sealing performance test of the insulating glove.

[0016] A locking buckle is hinged to the first connecting rod, and a locking pin is installed on the second connecting rod. A push rod and a second spring are installed on the synchronous frame. When the movable clamping plate is in contact with the fixed clamping plate, the sliding surface of the locking buckle slides along the locking pin and rotates to lock the locking pin, ensuring that the movable clamping plate is clamped tightly when it is in contact with the fixed clamping plate, thereby ensuring the sealing of the insulating glove during testing. When the test is over, the push rod pushes the locking buckle to rotate and disengage from the locking pin. Under the action of the second spring, the push rod will only return to its original position after the first connecting rod rotates. This ensures a continuous testing process, simplifies the operation process, and further improves the convenience of self-testing of insulating gloves.

[0017] Optionally, the gas source for the gas injection pipe can be an air pump or a motor-driven piston. Both of these methods can achieve the injection of airflow into the insulating glove through the gas injection pipe. However, the additional installation of an air pump and motor will increase the manufacturing cost of the equipment. Therefore, the above two solutions are not preferred solutions of this invention.

[0018] Preferably, the bracket is equipped with multiple cylinders, each of which contains a piston and a spring. The piston is slidably mounted inside the cylinder. The two ends of the spring are respectively connected to the end of the cylinder away from the synchronization frame and the piston. The ends of the multiple cylinders away from the synchronization frame are connected to air injection pipes. Both the movable clamp and the fixed clamp are provided with clearance grooves. The diameter of the clearance groove is equal to the outer diameter of the air injection pipe. The sliding stroke of the synchronization frame is greater than or equal to the sum of the length of the meshing section of the rack and gear and the sliding stroke of the piston. The rack is located above the piston.

[0019] By setting a piston, when the motor starts and drives the synchronous block to slide to the piston, it pushes the piston to compress the cylinder, introducing gas into the insulating glove to create positive pressure inside the glove. This positive pressure causes the surface of the insulating glove to deform, thus amplifying defects such as cracks and holes on its surface. This improves the observability of defects such as damage to the insulating glove, thereby increasing the accuracy of the insulating glove inspection. By setting the sliding stroke of the synchronous frame to be greater than or equal to the sum of the length of the rack and gear meshing section and the piston's sliding stroke, with the rack positioned above the piston, the rack slides on the synchronous frame. After the rack meshes with the gear, it disengages from the gear before contacting the piston, continuing to drive the piston to compress the cylinder and generate airflow. A single motor can achieve the contact between the movable and fixed clamping plates and the airflow generated by the cylinder compression. The simple structure enables linkage control, reduces equipment components, and thus improves the convenience of inspection.

[0020] Optionally, a sealing groove may be provided on the sealing ring, the radial cross-sectional shape of the sealing groove being trapezoidal, and a protrusion provided on the clearance groove. The above-mentioned structure of the sealing ring and clearance groove can also achieve the sealing of the gas injection pipe at the clearance groove. However, the processing technology of providing the protrusion on the clearance groove is relatively complex. Therefore, the above-mentioned structure of the sealing ring and clearance groove is not considered as the preferred solution of the present invention.

[0021] Preferably, each of the multiple air injection pipes is equipped with a sealing ring, and each of the multiple sealing rings is made of any one of the flexible materials including nitrile rubber, fluororubber, and silicone rubber. Each of the multiple sealing rings is provided with a protrusion, and the radial cross-sectional shape of each of the multiple protrusions is trapezoidal. Each of the multiple clearance grooves is provided with a sealing groove. The radial cross-sectional shape of the protrusion and the sealing groove are matched. The end of the air injection pipe connected to the cylinder is limited to rotate 90° in the projection direction of the clearance groove.

[0022] By installing a sealing ring on the gas injection pipe, the sealing ring can be made of any flexible material such as nitrile rubber, fluororubber, or silicone rubber. The sealing ring has a raised portion with a trapezoidal radial cross-sectional shape, and a sealing groove is provided on the clearance groove. The raised portion and the sealing groove's radial cross-sectional shape match. When the movable clamp and the fixed clamp are in contact, they compress the sealing ring, causing deformation and preventing gas leakage at the clearance groove. Furthermore, by limiting the rotation of the gas injection pipe's end connected to the cylinder by 90° in the projection direction of the clearance groove, the raised portion on the sealing ring and the sealing groove on the clearance groove can be accurately positioned during the rotation of the gas injection pipe, ensuring a sealing effect at the clearance groove. This prevents gas injected into the insulating glove from leaking out of the clearance groove, thereby improving the accuracy of the insulating glove's sealing performance test.

[0023] Preferably, the inner wall of the detection tank is provided with a placement area, the shape of which is the outline of a glove, and the placement area is also provided with multiple anti-slip strips, the cross-sectional shape of which is triangular sawtooth, and the tip of which is inclined towards the fixing plate; the side wall of the detection tank is provided with a liquid inlet and a drainage channel, the liquid inlet is connected to one end of the drainage channel, and the angle between the surface of the drainage channel and the bottom surface of the detection tank is less than 45°.

[0024] By incorporating anti-slip strips with triangular serrated cross-sections and serrated tips angled towards the fixed clamp, the anti-slip strips increase friction between the insulating glove and the inner wall of the testing tank when the glove is placed in the testing area. This prevents the glove from slipping before clamping due to the slippery testing liquid, thus ensuring convenient testing. Furthermore, by providing a liquid inlet and a drainage channel with an angle of less than 45° between the drainage channel surface and the bottom of the testing tank, the addition of testing liquid to the testing tank prevents excessively fast flow from generating foam that could affect the observation of the testing results of the insulating glove, thereby ensuring the accuracy of the test results.

[0025] The present invention also provides a testing method using the above-mentioned work gloves sealing testing equipment, comprising the following steps:

[0026] S1. Power on the work gloves sealing test equipment to ensure that the work gloves sealing test equipment can operate normally;

[0027] S2. Slowly add the test liquid into the test tank through the liquid inlet. The test liquid includes water or soapy water, any solvent that is easy to observe and will not damage the work gloves. Let the test liquid flow slowly along the drainage channel to the inner wall of the test tank and then flow into the bottom of the test tank to avoid the generation of foam and to facilitate the observation of the work gloves test process.

[0028] S3. Check the surface of the work gloves for dirt and foreign objects to ensure that the surface of the work gloves is clean and to avoid dirt and foreign objects contaminating the turbid test solution in order to ensure the accuracy of the test. Preliminary observation of the outer surface of the work gloves for obvious cracks, scratches and damage to preliminarily rule out obviously damaged or unqualified gloves.

[0029] S4. Place the work gloves in the placement area, ensuring the surface of the work gloves contacts the anti-slip strip to ensure stable placement and smooth clamping. Insert the air injection pipe into the opening of the work gloves, ensuring the air injection pipe is located in the clearance groove and that the sealing groove and protrusion align. Place one end of the work gloves opening on the fixed clamp, with the opening extending 5-10mm beyond the top of the fixed clamp to further ensure the sealing of the work gloves during the inflation test, thereby improving the accuracy of the work gloves test.

[0030] S5. Check if the palm part of the work gloves is completely immersed in the test solution. If it is not completely immersed, remove the work gloves, squeeze out the air inside, and repeat step S4.

[0031] S6. Start the control element and observe whether there are bubbles escaping from the detection liquid. If there are, the work gloves are qualified for sealing; otherwise, the sealing is qualified.

[0032] S7. After the test is completed, open the movable clamp, remove the air injection pipe from the opening of the work gloves, and remove the work gloves.

[0033] S8. Wipe the qualified gloves clean and dry them, keep them dry and clean, and place them in a dry, cool, dedicated storage facility; wipe the unqualified gloves dry, mark and record them, and place them in the waste area to await recycling. The testing is then completed.

[0034] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0035] 1. This invention improves the sealing performance of the insulating glove opening by setting up a movable clamping plate and a fixed clamping plate, and by clamping the opening of the insulating glove with the two plates in close contact. The clamping component compresses air into the insulating glove to ensure a positive pressure state inside the glove, which causes the insulating glove to expand and bulge. This causes cracks and holes on the surface of the insulating glove to be magnified under the deformation of the insulating glove, improving the observation of defects such as damage to the insulating glove and further ensuring the accuracy of the test results for the insulating glove.

[0036] 2. This invention connects a first connecting rod and a second connecting rod to the movable clamping plate. The first connecting rod and the second connecting rod are of equal length and parallel, thereby achieving parallel clamping between the movable clamping plate and the fixed clamping plate. This avoids the problem of slippage, misalignment, and wrinkling of the insulating glove during clamping, ensuring a flat and snug fit during clamping and further improving the sealing performance of the insulating glove. When the movable clamping plate is opened, its position is located above and to the side of the fixed clamping plate, so that the position of the movable clamping plate after opening does not affect the placement of the insulating glove, thus improving the convenience of insulating glove inspection.

[0037] 3. This invention provides a groove on the movable clamping plate and a boss on the fixed clamping plate. When the movable clamping plate and the fixed clamping plate are in contact, the two inclined surfaces of the boss contact the two inclined surfaces of the groove, leaving a cavity in the middle to allow the insulating glove to retain a certain elastic margin. This ensures that the two inclined surfaces of the boss and the two inclined surfaces of the groove make smooth contact with the surface of the insulating glove, further improving the sealing performance of the clamping assembly and thus ensuring the accuracy of the sealing performance test of the insulating glove. Attached Figure Description

[0038] Figure 1This is a schematic diagram of the overall structure of the present invention;

[0039] Figure 2 This is a schematic diagram of the overall structural layout along direction A in this invention;

[0040] Figure 3 In this invention Figure 1 A schematic diagram of the BB cross section and the testing process;

[0041] Figure 4 In this invention Figure 3 A schematic diagram showing the state of the sealing ring and work gloves clamped at point C;

[0042] Figure 5 This is a schematic cross-sectional view of the work gloves of the present invention fitting with the boss and the groove;

[0043] Figure 6 This is a diagram showing the positions of the push rod and locking pin of the present invention;

[0044] Figure 7 In this invention Figure 2 Diagram showing the open / closed state of the active clamp;

[0045] Figure 8 In this invention Figure 1 The on / off state diagram;

[0046] Figure 9 This is a flowchart of the detection method of the detection equipment of the present invention.

[0047] In the diagram: 1. Bracket; 2. Control element; 3. Detection groove; 31. Placement area; 32. Anti-slip strip; 33. Liquid inlet; 34. Drainage groove; 4. Clamping assembly; 401. Motor; 402. Lead screw; 403. Guide rod; 404. Synchronizing frame; 405. Rack; 406. Gear; 407. Connecting rod No. 1; 408. Connecting rod No. 2; 409. Movable clamping plate; 4091. Groove; 410. Fixed clamping plate; 4101. Boss; 5. Air injection pipe; 6. Cylinder; 7. Piston; 8. Spring 1; 9. Clearance groove; 91. Sealing groove; 10. Sealing ring; 101. Protrusion; 11. Locking buckle; 111. Sliding surface; 12. Locking pin; 13. Push rod; 14. Spring 2; 15. Work gloves. Detailed Implementation

[0048] The specific embodiments of the present invention will be described below with reference to the accompanying drawings. The present invention provides a sealing detection device and method for work gloves, and the specific technical solution is as follows:

[0049] Please see Figures 1 to 8A sealing testing device for work gloves includes a support 1, a control element 2, and a testing groove 3. The control element 2 and the testing groove 3 are both mounted on the support 1. The inner wall of the testing groove 3 has a placement area 31 shaped like the outline of a glove. Multiple anti-slip strips 32 are also provided on the placement area 31. The anti-slip strips 32 have a triangular serrated cross-section, with the tips of the teeth inclined towards a fixed clamp 410. The side wall of the testing groove 3 has a liquid inlet 33 and a drainage groove 34. The liquid inlet 33 is connected to one end of the drainage groove 34, and the angle between the surface of the drainage groove 34 and the bottom surface of the testing groove 3 is less than 45°. The support 1 also has an air injection pipe 5 connected to two cylinders 6, each cylinder 6 containing a piston 7 and a spring. Spring 8 and piston 7 are slidably mounted inside cylinder 6. Both ends of spring 8 are connected to the ends of cylinder 6 away from the timing frame 404 and piston 7, respectively. Both ends of cylinder 6 away from the timing frame 404 are connected to air injection pipes 5. Both movable clamping plate 409 and fixed clamping plate 410 are provided with clearance grooves 9, the diameter of which is equal to the outer diameter of the air injection pipe 5. The end of the air injection pipe 5 connected to cylinder 6 is limited to rotate 90° in the projection direction of the clearance groove 9. Furthermore, the sliding stroke of the timing frame 404 is equal to the sum of the length of the meshing section of rack 405 and gear 406 and the sliding stroke of piston 7, with rack 405 located above piston 7. Cylinder 6 is also connected to a clamping assembly 4, which includes a motor 401, a lead screw 402, and a guide rod 403. The system includes a timing frame 404, rack 405, gear 406, first connecting rod 407, second connecting rod 408, movable clamping plate 409, and fixed clamping plate 410. A motor 401, lead screw 402, and guide rods 403 are all mounted on the bracket 1. The lead screw 402 is connected to the motor 401, and the timing frame 404 is rotatably mounted on the lead screw 402. The timing frame 404 is slidably connected to multiple guide rods 403. Racks 405 are provided at both ends of the timing frame 404. The two sides of the movable clamping plate 409 are rotatably connected to one end of each of the two first connecting rods 407, and the other ends of the two first connecting rods 407 are rotatably connected to the bracket 1. The two sides of the movable clamping plate 409 are rotatably connected to one end of each of the two second connecting rods 408, and the other ends of the two second connecting rods 408 are rotatably connected to one end of each of the two second connecting rods 408. The other end is rotatably connected to the bracket 1. The first connecting rod 407 is located above the second connecting rod 408. The fixed clamp 410 is installed on the bracket 1. The first connecting rod 407 and the second connecting rod 408 are of equal length and parallel. The gear 406 is installed on the end of the first connecting rod 407 that is rotatably installed with the bracket 1. The first connecting rod 407 is hinged with a locking buckle 11. The locking stop is provided with a sliding surface 111. The second connecting rod 408 is installed with a locking pin 12. The timing frame 404 is installed with a push rod 13 and a second spring 14. The push rod 13 is slidably installed with the timing frame 404. The two ends of the second spring 14 are connected to the timing frame 404 and the push rod 13 respectively. The number of teeth of the rack 405 is equal to 1 / 2 the number of teeth of the gear 406. The fixed clamp 410 is located above the detection groove 3.When the work gloves 15 are placed on the fixed clamping plate 410 and the air injection tube is attached and immersed in the test tank 3, the control element 2 controls the motor 401 to drive the synchronous frame 404 to slide, thereby driving the movable clamping plate 409 to move parallel to the fixed clamping plate 410 as the reference plane. When the movable clamping plate 409 is in contact with the fixed clamping plate 410, the synchronous frame 404 compresses the cylinder 6 to spray airflow from the air injection tube 5 into the work gloves 15.

[0050] The movable clamping plate 409 is provided with a groove 4091, and the fixed clamping plate 410 is provided with a boss 4101. The cross-sectional shape of the boss 4101 is an outwardly convex trapezoid, and the cross-sectional shape of the groove 4091 is an inwardly concave trapezoid that matches the boss 4101. The depth of the groove 4091 is 3mm greater than the depth of the boss 4101. Both air injection pipes 5 are equipped with sealing rings 10, and both sealing rings 10 are made of nitrile rubber. Both sealing rings 10 are provided with protrusions 101, and the radial cross-sectional shape of both protrusions 101 is trapezoidal. Both clearance grooves 9 are provided with sealing grooves 91, and the radial cross-sectional shapes of the protrusions 101 and the sealing grooves 91 match.

[0051] For the testing method using the aforementioned work gloves seal testing equipment, please refer to [link / reference]. Figures 1 to 9First, power on the work gloves sealing test equipment to ensure it is operating normally. Slowly add soapy water into the test tank 3 through the liquid inlet 33. The soapy water flows along the drainage channel 34 to the inner wall of the test tank 3 and then into the bottom of the test tank 3. Next, check the surface of the work gloves 15 for dirt or foreign objects. After ensuring the surface of the work gloves 15 is clean, lift the air injection pipe 5 and place the work gloves 15 on the placement area 31 so that the surface of the work gloves 15 contacts the anti-slip strip 32. Insert the air injection pipe 5 into the work gloves 15 and confirm that the air pipe is located at the clearance groove 9 and that the sealing groove 91 and the protrusion 101 are correspondingly engaged. The length of the work gloves 15 extending beyond the upper end of the fixing clamp 410 is 5mm. Then start the control. Component 2, through control component 2, starts motor 401, motor 401 drives lead screw 402 to rotate, lead screw 402 rotates and drives synchronous frame 404 to slide along guide rod 403 towards detection groove 3. The rack 405 and gear 406 set on synchronous frame 404 mesh, driving first connecting rod 407 to swing towards fixed clamping plate 410. At the same time, second connecting rod 408 swings synchronously. Under the action of first connecting rod 407 and second connecting rod 408, movable clamping plate 409 moves parallel to fixed clamping plate 410 with fixed clamping plate 410 as the reference plane. When first connecting rod 407 and second connecting rod 408 swing to 90°, rack 405 and gear 406 disengage, and first connecting rod 407 swings close to ninety degrees. When the sliding surface 111 of the locking buckle 11 slides along the outer circular surface of the locking pin 12, and when the first connecting rod 407 and the second connecting rod 408 swing to 90°, the locking buckle 11 resets under the action of the torsion spring and locks the locking pin 12. The push rod 13 contacts the sliding surface 111 of the locking buckle 11, and under the push of the synchronous frame 404, the second spring 14 begins to compress. At this time, the movable clamping plate 409 and the fixed clamping plate 410 clamp the work gloves 15 in parallel. The work gloves 15 bend along the boss 4101 and the groove 4091 and fit against the inner wall of the boss 4101 and the inner wall of the groove 4091. At this time, the synchronous frame 404 continues to move under the drive of the motor 401. The side wall of the synchronous frame 404 contacts the piston 7 and pushes the piston 7 to compress the cylinder 6. The gas is sprayed from the air injection pipe 5 into the work gloves 15. At this time, observe whether there are bubbles in the detection tank 3. If no bubbles are generated, the test result is qualified. If bubbles are generated, the test result is unqualified. When the synchronous frame 404 slides to the end of the lead screw 402, the piston 7 of the cylinder 6 stops compressing, and the compression stroke of the second spring 14 ends, pushing the push rod 13. Under the push of the push rod 13, the locking buckle 11 swings and disengages from the locking pin 12. Then, the control element 2 controls the motor 401 to reverse and drive the synchronous frame 404 to reset. At this time, the piston 7 resets under the action of the first spring 8, while the push rod 13 remains in its original position under the action of the second spring 14 and the friction of the locking buckle 11. When the synchronous frame 404 continues to reset, the rack 405 and the gear 406 re-mesh.Rotating the rack 405 causes the first connecting rod 407 and the second connecting rod 408 to reset and swing, thereby driving the movable clamping plate 409 to slide parallel to the plane of the fixed clamping plate 410 away from the fixed clamping plate 410. At the same time, the locking buckle 11 resets and disengages from the push rod 13 under the action of the torsion spring, and the push rod 13 also resets. When the first connecting rod 407 and the second connecting rod 408 swing to 90°, the control element 2 controls the motor 401 to stop rotating. At this time, the air injection pipe 5 is removed from the opening of the work gloves 15. The qualified work gloves 15 are removed, wiped clean and dried, kept dry and clean, and placed in a dry and cool special storage facility. The unqualified work gloves 15 are wiped dry, marked and placed in the waste area to await recycling. The inspection is completed.

[0052] The specific embodiment of the present invention has been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the embodiments described above. For those skilled in the art, various changes, modifications, substitutions, and variations made to these embodiments without departing from the principles and ideas of the present invention should still fall within the protection scope of the present invention.

Claims

1. A sealing testing device for work gloves, characterized in that: The system includes a bracket (1), a control element (2), and a detection slot (3). The control element (2) and the detection slot (3) are both mounted on the bracket (1). An air injection pipe (5) is provided on the bracket (1). One end of the air injection pipe (5) is connected to a cylinder (6). A clamping assembly (4) is connected to the cylinder (6). The clamping assembly (4) includes a motor (401), a synchronous frame (404), a movable clamping plate (409), and a fixed clamping plate (410). The motor (401) is mounted on the bracket (1). The clamp (410) is located above the test tank (3); after the work gloves (15) are placed on the fixed clamp (410) and the air injection pipe (5) is attached and immersed in the test tank (3), the motor (401) is controlled by the control element (2) to drive the synchronous frame (404) to slide, thereby driving the movable clamp (409) to move parallel with the fixed clamp (410) as the reference plane, and when the movable clamp (409) and the fixed clamp (410) are in contact, the synchronous frame (404) compresses the cylinder (6) to make the air injection pipe (5) spray out airflow.

2. The work gloves sealing test equipment according to claim 1, characterized in that: The clamping assembly (4) includes a motor (401), a lead screw (402), a guide rod (403), a timing frame (404), a rack (405), a gear (406), a first connecting rod (407), a second connecting rod (408), a movable clamping plate (409), and a fixed clamping plate (410). The motor (401), lead screw (402), and guide rod (403) are all mounted on the bracket (1). The lead screw (402) is connected to the motor (401). The timing frame (404) is rotatably mounted on the lead screw (402). The timing frame (404) is slidably connected to multiple guide rods (403). The retainer has racks (405) at both ends. The two sides of the movable clamping plate (409) are respectively connected to multiple first connecting rods (407, 408, 409 ... 7) One end is rotatably connected, and the other ends of the plurality of first connecting rods (407) are rotatably connected to the bracket (1) respectively. The two sides of the movable clamp (409) are rotatably connected to one end of the plurality of second connecting rods (408) respectively, and the other ends of the plurality of second connecting rods (408) are rotatably connected to the bracket (1) respectively. The first connecting rod (407) is located above the second connecting rod (408). The fixed clamp (410) is installed on the bracket (1). The first connecting rod (407) and the second connecting rod (408) are of equal length and parallel. The gear (406) is installed at one end of the first connecting rod (407) and the bracket (1) rotatably installed. The number of teeth of the rack (405) is greater than or equal to 1 / 4 the number of teeth of the gear (406).

3. The work gloves sealing test equipment according to claim 2, characterized in that: Multiple cylinders (6) are installed on the bracket (1). Each cylinder (6) is equipped with a piston (7) and a spring (8). The piston (7) is slidably installed in the cylinder (6). The two ends of the spring (8) are respectively connected to the end of the cylinder (6) away from the synchronous frame (404) and the piston (7). Each end of the multiple cylinders (6) away from the synchronous frame (404) is connected to an air injection pipe (5). Both the movable clamp (409) and the fixed clamp (410) are provided with clearance grooves (9). The diameter of the clearance groove (9) is equal to the outer diameter of the air injection pipe (5). The sliding stroke of the synchronous frame (404) is greater than or equal to the sum of the length of the meshing section of the rack (405) and the gear (406) and the sliding stroke of the piston (7). The rack (405) is located above the piston (7).

4. The work gloves sealing test equipment according to claim 2, characterized in that: The movable clamping plate (409) is provided with a groove (4091), and the fixed clamping plate (410) is provided with a boss (4101). The cross-sectional shape of the boss (4101) is an outwardly convex trapezoid, and the cross-sectional shape of the groove (4091) is an inwardly concave trapezoid that matches the boss (4101). The depth of the groove (4091) is 3-5 mm greater than the depth of the boss (4101).

5. The work gloves sealing test equipment according to claim 3, characterized in that: Each of the multiple air injection pipes (5) is equipped with a sealing ring (10), and each of the multiple sealing rings (10) is made of any one of the flexible materials including nitrile rubber, fluororubber, and silicone rubber. Each of the multiple sealing rings (10) is provided with a protrusion (101), and the radial cross-sectional shape of each of the multiple protrusions (101) is trapezoidal. Each of the multiple clearance grooves (9) is provided with a sealing groove (91). The radial cross-sectional shape of the protrusion (101) and the sealing groove (91) are matched. The end of the air injection pipe (5) connected to the cylinder (6) is limited to rotate 90° in the projection direction of the clearance groove (9).

6. The work gloves sealing test device according to claim 3, characterized in that: The inner wall of the detection tank (3) is provided with a placement area (31), the shape of which is the outline of a glove. The placement area (31) is also provided with multiple anti-slip strips (32), the cross-sectional shape of which is triangular sawtooth, and the tip of which is inclined towards the fixing plate (410). The side wall of the detection tank (3) is provided with a liquid inlet (33) and a drainage channel (34). The liquid inlet (33) is connected to one end of the drainage channel (34), and the angle between the surface of the drainage channel (34) and the bottom surface of the detection tank (3) is less than or equal to 45°.

7. The work gloves sealing test equipment according to claim 2, characterized in that: A locking buckle (11) is hinged on the first connecting rod (407), and a sliding surface (111) is provided on the locking port. A locking pin (12) is installed on the second connecting rod (408). A push rod (13) and a second spring (14) are installed on the synchronous frame (404). The push rod (13) is slidably installed with the synchronous frame (404), and the two ends of the second spring (14) are respectively connected to the synchronous frame (404) and the push rod (13).

8. A testing method using the work gloves sealing testing equipment according to any one of claims 1-7, characterized in that, Includes the following steps: S1. Power on the work gloves sealing test equipment to ensure that the work gloves sealing test equipment can operate normally; S2. Slowly add the test liquid to the test tank (3). The test liquid includes water or soapy water, any solvent that is easy to observe and does not damage the work gloves (15). S3. Check the surface of the work gloves (15) for dirt or foreign objects, and ensure that the surface of the work gloves (15) is clean. Make a preliminary observation of whether there are obvious cracks, scratches or damage on the outer surface of the work gloves (15). S4. Place the work gloves (15) in the placement area (31) so that the surface of the work gloves (15) contacts the anti-slip strip (32). Insert the air injection pipe (5) into the opening of the work gloves (15) and ensure that the air injection pipe (5) is located in the relief groove (9) and the sealing groove (91) and the protrusion (101) are correspondingly matched. One end of the opening of the work gloves (15) is mounted on the fixed clamp (410) and the length of the opening of the work gloves (15) extending out of the upper end of the fixed clamp (410) is 5-10mm. S5. Check if the palm part of the work gloves (15) is completely immersed in the test liquid. If it is not completely immersed, remove the work gloves (15), squeeze out the air inside, and repeat step S4. S6. Start the control element (2) and observe whether there are bubbles in the detection liquid. If there are, the work gloves (15) are qualified for sealing; otherwise, the sealing is qualified. S7. After the test is completed, open the movable clamp (409), take out the air injection pipe (5) from the opening of the work gloves (15), and take off the work gloves (15). S8. Wipe the qualified work gloves (15) clean and dry them, keep them dry and clean and put them in a dry and cool special storage facility; wipe the unqualified work gloves (15) dry, mark and record them, put them in the waste area to wait for recycling, and the test is over.

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