Cathode roller airtight test sealing device and method

Abstract

The invention relates to the technical field of airtightness detection, and discloses a cathode roller airtightness test sealing device and method, and the device comprises a pedestal, a transmission assembly, a lifting assembly, a guide assembly, and a sealing assembly. According to the cathode roller airtight test sealing device, in the operation process of the cathode roller airtight test sealing device, the rotating motion of the adjusting roller is converted into linear lifting of the ejector block through the spiral groove, the moving distance and speed of the cathode roller are precisely controlled, collision and position deviation are avoided, the equipment safety and positioning precision are improved, and a good foundation is laid for the subsequent process; due to the inclined pressing groove, the sealing sleeve can be automatically close to and sleeved with the hollow shaft of the cathode roller during descending, the installation process is simplified, manual calibration is reduced, the working efficiency is improved, and the coaxiality of the sealing sleeve and the hollow shaft is guaranteed; and then, a series of complex mechanical structures are linked to accurately control the sealing sleeve, so that the sealing sleeve is tightly attached to the end face of the hollow shaft of the cathode roller, gas leakage is effectively prevented, and the accuracy of airtight test data is ensured.

Description

Technical Field

[0001] The invention belongs to the technical field of air tightness detection, and in particular relates to a cathode roller air tightness test sealing device and method. Background Art

[0002] In modern industrial production, the cathode roller is a core component in many process steps, and its performance plays a decisive role in product quality and production efficiency. The cathode roller's protruding main shaft is hollow. This unique design is designed to efficiently transfer various media required for production, such as plating solution in electroplating processes or specific reaction raw materials in other chemical processes. This hollow structure not only requires excellent mechanical strength to withstand the various stresses during operation, but also imposes strict airtightness standards.

[0003] During the use of the airtight test sealing device, the cathode roller needs to be positioned and moved. However, the traditional device achieves precise control of the movement trajectory of the cathode roller. Since the hollow main shaft is easily disturbed by external factors during movement, a slight deviation may cause it to collide with surrounding components, causing damage to the main shaft, and the coaxiality of the installation cannot be guaranteed, making subsequent adjustments more difficult. In addition, most of the existing airtight tests can only be performed when the cathode roller is stationary. In actual production, the hollow main shaft of the cathode roller is in a continuous rotation state to complete the efficient transfer of the medium, so the static test cannot be simulated, resulting in large deviations in the test results, and cannot provide reliable quality assurance for the actual application of the product.

[0004] In view of this, the present invention is proposed. Summary of the Invention

[0005] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is: A cathode roller airtight test sealing device comprises a base.

[0006] A transmission assembly is provided on the base; The base is provided with a lifting assembly, which includes an adjusting roller with a combination groove and connected to the transmission assembly. The combination groove includes a spiral groove and a circular arc groove, and a swing arm is slidably provided on the spiral groove. A top block is rotatably installed at the end of the swing arm, and the top block is placed at the bottom of the cathode roller; The base is also equipped with a guide assembly, which includes sealing sleeves placed on both sides of the hollow shaft of the cathode roller, a top plate installed on the side wall of the sealing sleeve, and a collar rotatably arranged on the sealing sleeve, and the collar is slidably arranged on the lower pressure groove and the push groove; A feed sealing assembly is installed on the base, and the feed sealing assembly includes a horizontally sliding push rod and a lifting slope placed on the adjusting roller and adapted to the arc groove. The movement of the lifting slope drives the sealing sleeve at the end of the push rod to extrude the seal toward the end face of the hollow shaft of the cathode roller and cooperate with the transmission assembly.

[0007] As a preferred embodiment of the present invention, a support frame is installed on the base, a positioning frame is installed on the top of the support frame, a transmission assembly is embedded in the positioning frame, a pair of support legs are installed at the bottom of the positioning frame, a pair of support legs are installed on the surface of the base, and the adjusting roller is rotatably connected to the side wall of the support frame.

[0008] As a preferred embodiment of the present invention, the transmission assembly includes a friction wheel, which is rotatably mounted on a positioning frame, the bottom of the friction wheel is engaged with a friction driven wheel mounted on the surface of the adjusting roller, the upper surface of the friction wheel is adapted to the friction engaging wheel mounted on the surface of the sealing sleeve, a transmission shaft is mounted on the rotation center of the friction wheel, and a crank is mounted on the end of the transmission shaft.

[0009] As a preferred embodiment of the present invention, a slider is slidingly provided on the combination groove, the upper surface of the slider is rotatably connected to the swing arm, a flat plate is installed on the top block, a limiting rod is movably installed on the flat plate, the bottom of the limiting rod is installed on the base, and a limiting plate is installed on the top of the limiting rod, and the diameter of the limiting plate is larger than the diameter of the limiting rod.

[0010] As a preferred embodiment of the present invention, a connecting pipe is installed on the side wall of the sealing sleeve, a matching valve and a pressure gauge are installed on the connecting pipe, a sealing gasket is installed on the end face of the sealing sleeve, and the sealing gasket is adapted to the end face of the hollow shaft of the cathode roller, a sealing strip is installed on the side wall of the sealing sleeve, and a roller is installed on the top plate.

[0011] As a preferred embodiment of the present invention, a mounting frame is installed on the positioning frame, and a lower pressure groove and a propulsion groove are provided on the mounting frame. The lower pressure groove and the propulsion groove are connected to each other, and the lower pressure groove is an inclined groove, and the propulsion groove is a horizontal groove. A sliding rod is slidingly arranged inside the lower pressure groove, one end of the sliding rod is installed on the side wall of the ring, and a telescopic rod in a compressed state is installed on the other end of the sliding rod, and the bottom of the telescopic rod is horizontally slidably connected to the surface of the positioning frame.

[0012] As a preferred embodiment of the present invention, a push rod is installed movably through the side wall of the mounting frame, a first ball is installed at one end of the push rod, the first ball is attached to the side wall of the sealing sleeve, a pressure plate is installed on the push rod, and a return spring is sleeved on the push rod, one end of the return spring is clamped on the mounting frame, and the other end of the return spring is clamped on the pressure plate.

[0013] As a preferred embodiment of the present invention, a vertical plate is installed on the positioning frame, a turntable is rotatably installed on the vertical plate, several pairs of guide blocks are installed on the turntable, the guide blocks and the second ball installed on the other end of the top rod are adapted to each other, a rocker arm is installed at the rotation center of the turntable, a strip groove is provided on the rocker arm, and a protrusion is slidably provided on the strip groove.

[0014] As a preferred embodiment of the present invention, a vertical rod is movably inserted and provided inside the positioning frame, a synchronization plate is installed at the bottom of the vertical rod, and a protrusion is installed on the synchronization plate, the protrusion is adapted to the jacking slope, the top of the vertical rod and the protrusion are connected to each other, a baffle is installed on the vertical rod, and a limit spring is sleeved on the side wall of the vertical rod, one end of the limit spring is clamped on the baffle, and the other end of the limit spring is clamped on the baffle.

[0015] As a preferred embodiment of the present invention, the method for using the cathode roller airtight test sealing device comprises the following steps: Step 1: Place the cathode roller on the top block, then rotate the friction wheel to drive the friction driven wheel to rotate, and then synchronously drive the adjustment roller to rotate. At this time, the end of the swing arm slides horizontally along the spiral groove, and then the top block of the soil hole moves vertically downward, moving the cathode roller toward the top plate of the equipment; Step 2: When the cathode roller slides onto the top plate, the top plate is pressed downward, and the top plate drives the sealing sleeve to slide along the lower pressing groove. Since the lower pressing groove is in an inclined state, the sealing sleeve gradually moves toward the hollow shaft of the cathode roller, and finally the sealing sleeve is inserted into the outer wall of the hollow shaft of the cathode roller; Step 3: When the friction wheel continues to rotate, the end of the swing arm slides in the arc groove, causing the ejector block to stop moving. However, the lifting slope drives the ejector rod to move upward, and the ejector rod pushes the top rocker arm to deflect, thereby driving the turntable connected to the rocker arm to rotate. The position of the guide block on the turntable changes, and the lifting ejector rod slides horizontally, eventually squeezing the sealing sleeve to move toward the end face of the hollow shaft of the cathode roller, completing the sealing operation. Step 4: When the sealing sleeve moves, the friction meshing wheel on the sealing sleeve engages with the friction wheel. Then the operator fills the cathode roller with gas at a pressure of 0.03 MPa from the connecting pipe on the sealing sleeve and maintains the pressure for 120 minutes. Step 5: During the pressure holding period, the operator continuously rotates the friction wheel forward and reverse, and the friction wheel drives the meshing sealing sleeve to rotate. The synchronous extrusion of the sealing sleeve drives the cathode roller to rotate, thereby simulating the sealing performance of the cathode roller under normal rotation. When the pressure holding is completed, the product is qualified if the detection pressure drop is ≤1%.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The present invention achieves multiple advantages through a single drive source during the operation of the cathode roller airtightness test sealing device. A spiral groove is used to convert the rotational motion of the adjustment roller into the linear lifting and lowering of the top block, precisely controlling the movement distance and speed of the cathode roller. This not only avoids collisions and positional deviations, improves equipment safety and positioning accuracy, but also lays a good foundation for subsequent processes. The inclined downward pressure groove allows the sealing sleeve to automatically approach and fit the hollow shaft of the cathode roller during descent. This not only simplifies the installation process, reduces manual calibration, and improves work efficiency, but also ensures the coaxiality of the sealing sleeve and the hollow shaft. Subsequently, a series of complex mechanical structures are linked to achieve precise control of the sealing sleeve, ensuring that it fits tightly against the end face of the hollow shaft of the cathode roller, effectively preventing gas leakage and ensuring accurate airtightness test data. Crucially, the device can simulate the actual rotational state of the cathode roller during operation to perform airtightness tests, avoiding potential misjudgments in static testing, significantly improving the accuracy and reliability of product quality testing, and providing a solid and powerful guarantee for the product's practical application.

[0017] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In the attached figure: Figure 1 A schematic diagram of the three-dimensional structure of a cathode roller airtight test sealing device; Figure 2 This is a schematic diagram of the overall structure of a cathode roller airtight test sealing device; Figure 3 A bottom view of a cathode roller airtight test sealing device; Figure 4 A schematic diagram of the partial structure of a cathode roller airtight test sealing device Figure 1 ; Figure 5 A schematic diagram of the partial structure of a cathode roller airtight test sealing device Figure 2 ; Figure 6 A schematic diagram of the partial structure of a cathode roller airtight test sealing device Figure 3 ; Figure 7 A schematic diagram of the partial structure of a cathode roller airtight test sealing device Figure 4 ; Figure 8 A cathode roller airtight test sealing device Figure 7 Enlarged view of point A in the middle; Figure 9 A schematic diagram of the partial structure of a cathode roller airtight test sealing device Figure 5 ; Figure 10 A three-dimensional diagram of a sealing sleeve for a cathode roller airtight test sealing device.

[0019] In the picture: 1. Base; 11. Support frame; 111. Positioning frame; 112. Support leg; 12. Friction wheel; 121. Drive shaft; 122. Crank handle; 2. Adjusting roller; 21. Combined groove; 211. Spiral groove; 212. Arc groove; 22. Top block; 221. Swing arm; 222. Slider; 23. Flat plate; 231. Limit rod; 232. Limit plate; 24. Friction driven wheel; 3. Sealing sleeve; 31. Friction meshing wheel; 311. Sealing strip; 312. Sealing gasket; 32. Top plate; 321. Roller; 33. Collar; 331. Sliding rod; 332. Telescopic rod; 34. Mounting frame; 341. Pressing groove; 342. Pushing groove; 35. Connecting pipe; 4. Push rod; 41. Pressure plate; 411. Return spring; 412. First ball; 413. Second ball; 42. Turntable; 421. Guide block; 422. Vertical plate; 43. Rocker arm; 431. Strip groove; 432. Protrusion; 44. Vertical rod; 441. Baffle; 442. Limit spring; 443. Synchronous plate; 444. Protrusion; 45. Lifting slope. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention. Example

[0021] like Figures 1 to 10 As shown, a cathode roller airtight test sealing device includes a base 1.

[0022] A transmission assembly is provided on the base 1; The base 1 is provided with a lifting assembly, which includes an adjusting roller 2 with a combination slot 21 and is connected to a transmission assembly. The combination slot 21 includes a spiral slot 211 and a circular slot 212. A swing arm 221 is slidably provided on the spiral slot 211. A top block 22 is rotatably mounted on the end of the swing arm 221, and the top block 22 is placed at the bottom of the cathode roller. This unique combination accurately converts the rotational motion of the adjusting roller 2 into the horizontal sliding of the swing arm 221 and the vertical lifting of the top block 22, achieving precise control of the height position of the cathode roller and ensuring the stable positioning of the cathode roller in subsequent operations. The top block 22, rotatably mounted on the end of the swing arm 221, is placed exactly at the bottom of the cathode roller. During the operation of the entire device, it can stably support the cathode roller, ensuring its stable position and avoiding unnecessary shaking or displacement.

[0023] The base 1 is also equipped with a guide assembly, which includes sealing sleeves 3 placed on both sides of the hollow shaft of the cathode roller. Top plates 32 are installed on the side walls of the sealing sleeves 3. Top plates 32 not only provide structural support but also, during the installation of the cathode roller, guide the sealing sleeves 3 to accurately mate with the hollow shaft through contact and interaction with the cathode roller, significantly improving installation accuracy and efficiency. A collar 33 is rotatably mounted on the sealing sleeve 3, slidingly mounted on the lower pressure groove 341 and the push groove 342. A feed sealing assembly is installed on the base 1, which includes a horizontally sliding push rod 4 and a lifting slope 45 placed on the adjusting roller 2 and adapted to the arc groove 212. When the device is running, the lifting slope 45 can cleverly drive the push rod 4 so that the sealing sleeve 3 at the end of the push rod 4 is squeezed and sealed toward the end face of the hollow shaft of the cathode roller. This process perfectly cooperates with the transmission assembly to achieve automated and precise sealing operations, effectively ensuring the reliability of the sealing effect and greatly improving the accuracy of the airtightness test.

[0024] like Figures 1 to 10 As shown, in the specific embodiment, a support frame 11 is mounted on the base 1, a positioning frame 111 is mounted on the top of the support frame 11, a transmission assembly is embedded in the positioning frame 111, and a pair of support legs 112 are mounted on the bottom of the positioning frame 111. The pair of support legs 112 are mounted on the surface of the base 1, and the adjustment roller 2 is rotatably connected to the side wall of the support frame 11. The above structure further enhances the stability and reliability of the entire device.

[0025] like Figures 1 to 10 As shown, the transmission assembly further includes a friction wheel 12, which is rotatably mounted on a positioning frame 111. The bottom of the friction wheel 12 meshes with a friction driven wheel 24 mounted on the surface of the adjusting roller 2. This meshing method ensures efficient and stable power transmission, ensuring that the adjusting roller 2 accurately rotates in accordance with the rotation of the friction wheel 12, thereby achieving precise control of the cathode roller position. The upper surface of the friction wheel 12 is adapted to the friction engagement wheel 31 mounted on the surface of the sealing sleeve 3. In the later stages of the device's operation, when it is necessary to simulate the actual working conditions of the cathode roller, the friction wheel 12 can cooperate with the friction engagement wheel 31 to drive the sealing sleeve 3 and the cathode roller to rotate synchronously, providing test conditions that are more closely aligned with actual operating conditions for airtightness testing and significantly improving the accuracy and reliability of the test results. A transmission shaft 121 is mounted at the rotation center of the friction wheel 12, and a crank 122 is mounted at the end of the transmission shaft 121. By cranking the crank 122, the entire device can be easily driven, eliminating the need for complex electrical drive equipment. This not only reduces equipment cost but also eases maintenance, making the device more flexible and convenient to use. Example

[0026] The difference between Example 1 and this example is that: Figures 1 to 10As shown, a slider 222 is slidably provided on the combination slot 21, and the upper surface of the slider 222 is rotatably connected to the swing arm 221. A flat plate 23 is mounted on the top block 22, and a limit rod 231 is movably installed through the flat plate 23. The bottom of the limit rod 231 is mounted on the base 1, and a limit plate 232 is mounted on the top of the limit rod 231. The diameter of the limit plate 232 is larger than that of the limit rod 231. This structural design can effectively limit the movement of the top block 22, ensuring that the top block 22 can only slide vertically, and preventing it from deflecting during movement.

[0027] like Figures 1 to 10 As shown, in a specific embodiment, the connecting pipe 35 mounted on the side wall of the sealing sleeve 3 is equipped with a suitable valve and pressure gauge. This design allows for convenient and precise control of the gas pressure entering the cathode roller during the airtightness test, and real-time monitoring of pressure changes, providing accurate data for evaluating the sealing performance of the cathode roller. The sealing gasket 312 mounted on the end face of the sealing sleeve 3 mates with the end face of the hollow shaft of the cathode roller, effectively enhancing the sealing effect, reducing gas leakage, and ensuring the accuracy of the airtightness test results. The sealing strip 311 mounted on the side wall of the sealing sleeve 3 further improves the seal between the sealing sleeve 3 and the hollow shaft of the cathode roller, providing multiple safeguards for the reliability of the test. The roller 321 mounted on the top plate 32 effectively reduces frictional resistance during the downward movement of the cathode roller against the top plate 32, ensuring smoother movement of the sealing sleeve 3 and improving the efficiency and stability of the device.

[0028] like Figures 1 to 10 As shown, further, a mounting frame 34 is mounted on the positioning frame 111. The mounting frame 34 is provided with a downward pressure groove 341 and a forward push groove 342. The downward pressure groove 341 and the forward push groove 342 are interconnected, and the downward pressure groove 341 is an inclined groove, while the forward push groove 342 is a horizontal groove. This unique groove design allows the sealing sleeve 3 to automatically move toward the hollow shaft of the cathode roller when sliding along the downward pressure groove 341, achieving precise docking. This greatly simplifies the installation process of the sealing sleeve 3, reduces the workload of manual calibration, and improves work efficiency. A sliding rod 331 is slidably provided inside the downward pressure groove 341. One end of the sliding rod 331 is mounted on the side wall of the collar 33, and the other end of the sliding rod 331 is mounted with a telescopic rod 332 in a compressed state. The bottom of the telescopic rod 332 is horizontally slidably connected to the surface of the positioning frame 111. The design of the telescopic rod 332 ensures that the sealing sleeve 3 always has an upward force even when not subjected to external forces. Example

[0029] The difference between Example 2 and this example is that: Figures 1 to 10As shown, a push rod 4 is installed movably through the side wall of the mounting frame 34. A first ball 412 is installed at the end of one side of the push rod 4. The first ball 412 fits against the side wall of the sealing sleeve 3. The first ball 412 can effectively reduce the frictional resistance between the push rod 4 and the sealing sleeve 3, making the push rod 4's extrusion operation on the sealing sleeve 3 smoother and more accurate. A pressure plate 41 is installed on the push rod 4, and a return spring 411 is sleeved on the push rod 4. One end of the return spring 411 is clamped to the mounting frame 34, and the other end of the return spring 411 is clamped to the pressure plate 41. This structural design allows the push rod 4 to automatically reset under the action of the return spring 411 after completing the extrusion and sealing operation, preparing for the next operation, greatly improving the operating convenience and work efficiency of the device.

[0030] like Figures 1 to 10 As shown, in a specific embodiment, a vertical plate 422 is mounted on the positioning frame 111. A turntable 42 is rotatably mounted on the vertical plate 422. Several pairs of guide blocks 421 are mounted on the turntable 42. The guide blocks 421 mate with the second ball bearings 413 mounted on the other end of the ejector rod 4. A rocker arm 43 is mounted at the center of rotation of the turntable 42. This rocker arm 43 has a strip groove 431 defined therein, and a protrusion 432 is slidably mounted on the strip groove 431. As the turntable 42 rotates, the position of the guide blocks 421 changes, precisely lifting the ejector rod 4 and allowing it to slide horizontally. This allows for precise control of the sealing sleeve 3, ensuring that it fits tightly against the hollow end face of the cathode roller. This further improves sealing reliability, effectively prevents gas leakage, and provides a solid guarantee for the accuracy of airtightness test data. The rocker arm 43, mounted at the center of rotation of the turntable 42, along with the strip groove 431 defined therein and the protrusion 432 slidably mounted therein, are interconnected with the top of the vertical rod 44. This structural design converts the movement of the adjusting roller 2 into the horizontal movement of the push rod 4 through clever mechanical linkage, realizing the coordinated work among the various components of the device and greatly improving the degree of automation and work efficiency of the device.

[0031] like Figures 1 to 10 As shown, further, a vertical rod 44 is provided inside the positioning frame 111 for movement through and insertion, a synchronous plate 443 is installed at the bottom of the vertical rod 44, and a protrusion 444 is installed on the synchronous plate 443, the protrusion 444 is adapted to the jacking slope 45, the top of the vertical rod 44 is connected to the protrusion 432, a baffle 441 is installed on the vertical rod 44, and a limiting spring 442 is provided on the side wall of the vertical rod 44, one end of the limiting spring 442 is clamped on the baffle 441, and the other end of the limiting spring 442 is clamped on the baffle 441, when the jacking slope 45 moves and drives the protrusion 444 adapted thereto, thereby causing the vertical rod 44 to move upward, at this time the limiting spring 442 is stretched, and the limiting spring 442 is used to facilitate later reset.

[0032] The present invention also discloses a method for using a cathode roller airtight test sealing device, which comprises the following steps: Step 1: Place the cathode roller on the top block 22, then rotate the friction wheel 12 to drive the friction driven wheel 24 to rotate, thereby synchronously driving the adjustment roller 2 to rotate. At this time, the end of the swing arm 221 slides horizontally along the spiral groove 211, and then the soil hole top block 22 moves vertically downward, moving the cathode roller toward the top plate 32 of the equipment; Step 2: After the cathode roller slides onto the top plate 32, the top plate 32 is pressed downward, and the top plate 32 drives the sealing sleeve 3 to slide along the lower pressing groove 341. Since the lower pressing groove 341 is in an inclined state, the sealing sleeve 3 gradually moves toward the hollow shaft of the cathode roller, and finally the sealing sleeve 3 is inserted into the outer wall of the hollow shaft of the cathode roller; Step 3: When the friction wheel 12 continues to rotate, the end of the swing arm 221 slides in the arc groove 212, so that the ejector block 22 stops moving. However, the lifting slope 45 drives the ejector rod 4 to move upward, and the ejector rod 4 pushes the top rocker arm 43 to deflect, thereby driving the turntable 42 connected to the rocker arm 43 to rotate. The position of the guide block 421 on the turntable 42 changes, and the lifting ejector rod 4 slides horizontally, finally squeezing the sealing sleeve 3 to move toward the end face of the hollow shaft of the cathode roller, and the sealing operation is completely completed; Step 4: When the sealing sleeve 3 moves, the friction engagement wheel 31 on the sealing sleeve 3 engages with the friction wheel 12. Then, the operator fills the cathode roller with gas at a pressure of 0.03 MPa from the connecting pipe 35 on the sealing sleeve 3 and maintains the pressure for 120 minutes. Step 5: During the pressure holding period, the operator continuously rotates the friction wheel 12 forward and reverse, and the friction wheel 12 drives the engaged sealing sleeve 3 to rotate. The synchronous extrusion of the sealing sleeve 3 drives the cathode roller to rotate, thereby simulating the sealing performance of the cathode roller under normal rotation. When the pressure holding is completed, the product is qualified if the detection pressure drop is ≤1%.

[0033] The implementation principle of the cathode roller airtight test sealing device of the present invention is as follows: Place the cathode roller on the top block 22, align the hollow shafts at both ends of the cathode roller with the top plate 32, and then the operator turns the crank 122. The design of the crank 122 greatly improves the convenience of operation. No complicated electric drive equipment is required, and the device can be easily started by manpower alone, reducing equipment costs and maintenance difficulties. The crank 122 drives the transmission shaft 121 to rotate, thereby rotating the friction wheel 12. Since the bottom of the friction wheel 12 and the friction driven wheel 24 installed on the surface of the adjusting roller 2 are engaged with each other, the adjusting roller 2 will rotate synchronously with the rotation of the friction wheel 12. This gear meshing transmission method has stable and efficient power transmission, and can accurately control the speed and direction of the adjusting roller 2, laying the foundation for the subsequent smooth transportation of the cathode roller.

[0034] The regulating roller 2 is provided with a combined groove 21 , which includes a spiral groove 211 and an arc groove 212 .

[0035] As the adjusting roller 2 rotates, the end of the swing arm 221 slides horizontally along the spiral groove 211. Because the top block 22 is rotatably mounted on the end of the swing arm 221, the top block 22 moves vertically downward under the drive of the swing arm 221, thereby pushing the cathode roller toward the top plate 32 of the equipment. This design utilizes the special shape of the spiral groove 211 to cleverly convert the rotational motion of the adjusting roller 2 into the linear lifting motion of the top block 22. This can accurately control the movement distance and speed of the cathode roller, ensuring that the cathode roller is smoothly and accurately transported to the top plate 32, avoiding cathode roller collisions or position deviations caused by improper operation, and improving the safety and positioning accuracy of the equipment. When the cathode roller slides onto the top plate 32, it pushes the top plate 32 downward. Because the top plate 32 is mounted on the side wall of the sealing sleeve 3, it drives the sealing sleeve 3 along with it. The rotating collar 33 on the sealing sleeve 3 slides over the lower pressure groove 341 and the push groove 342. The lower pressure groove 341 is an inclined groove. As the top plate 32 drives the sealing sleeve 3 along the lower pressure groove 341, the sealing sleeve 3 gradually moves toward the hollow shaft of the cathode roller, ultimately inserting into the outer wall of the hollow shaft. The inclined lower pressure groove 341 allows the sealing sleeve 3 to automatically approach and engage the hollow shaft of the cathode roller during its descent. This self-guided design greatly simplifies the installation process of the sealing sleeve 3, reduces manual calibration steps, and improves work efficiency. It also ensures the coaxiality of the sealing sleeve 3 and the hollow shaft of the cathode roller, ensuring a good sealing effect. As the friction wheel 12 continues to rotate, the end of the swing arm 221 slides into the circular groove 212, and the ejector block 22 stops moving. Simultaneously, the lifting ramp 45 on the adjusting roller 2, which is adapted to the circular groove 212, begins to function. The movement of the lifting ramp 45 drives the corresponding protrusion 444, which in turn causes the vertical rod 44 to move upward. The top of the vertical rod 44 is connected to the protrusion 432 within the strip groove 431 on the swing arm 43. The upward movement of the vertical rod 44 deflects the swing arm 43, which in turn rotates the connected turntable 42. The turntable 42 is mounted with several pairs of guide blocks 421. These guide blocks 421 mate with the second ball bearings 413 mounted on the other end of the ejector rod 4. As the turntable 42 rotates, the position of the guide blocks 421 changes, causing the ejector rod 4 to slide horizontally. A first ball bearing 412, mounted on the end of one side of the push rod 4, fits against the sidewall of the sealing sleeve 3. The horizontal sliding of the push rod 4 compresses the sealing sleeve 3 toward the end face of the hollow cathode roller shaft, thereby completely sealing the hollow cathode roller shaft. This series of mechanical linkages enables precise control of the sealing sleeve 3, ensuring that the sealing sleeve 3 fits tightly against the end face of the hollow cathode roller shaft. This greatly improves the reliability of the seal, effectively prevents gas leakage, and ensures the accuracy of the airtightness test data. When the sealing sleeve 3 is in the process of sealing, the friction engaging wheel 31 on the sealing sleeve 3 slides horizontally. When the sealing sleeve 3 is completely sealed, the friction engaging wheel 31 is engaged with the friction wheel 12 .

[0036] At this point, the operator injects gas at a pressure of 0.03 MPa into the cathode roller through the connecting tube 35 on the sealing sleeve 3 and maintains the pressure for 120 minutes. During this period, the operator continuously rotates the crank handle 122 forward and reverse, causing the friction wheel 12 to rotate forward and reverse, thereby driving the meshed sealing sleeve 3 to rotate. Because the sealing sleeve 3 is in close contact with the cathode roller, its rotation drives the cathode roller through a synchronous squeezing action, thus simulating the normal rotation of the cathode roller. By simulating the actual rotation of the cathode roller during airtightness testing, the sealing performance of the cathode roller under working conditions can be more realistically tested, avoiding potential misjudgments in static testing, improving the accuracy and reliability of product quality testing, and providing strong assurance for the product's practical application. After the pressure maintenance period ends, the pressure drop is measured using a pressure gauge installed on the connecting tube 35. If the pressure drop is ≤1%, the cathode roller has good sealing performance and is qualified.

Claims

1. A cathode roller airtight test sealing device, comprising a base (1), characterized in that: A transmission assembly is provided on the base (1); A lifting assembly is provided on the base (1), the lifting assembly comprising an adjusting roller (2) having a combined groove (21) and connected to the transmission assembly, the combined groove (21) comprising a spiral groove (211) and a circular arc groove (212), and a swing arm (221) is slidably provided on the spiral groove (211), a top block (22) is rotatably installed at the end of the swing arm (221), and the top block (22) is placed at the bottom of the cathode roller; A guide assembly is also installed on the base (1), and the guide assembly includes a sealing sleeve (3) placed on both sides of the hollow shaft of the cathode roller, a top plate (32) is installed on the side wall of the sealing sleeve (3), and a collar (33) is rotatably provided on the sealing sleeve (3), and the collar (33) is slidably provided on the lower pressing groove (341) and the pushing groove (342); A feed seal assembly is mounted on the base (1), and the feed seal assembly comprises a horizontally sliding push rod (4) and a lifting slope (45) disposed on the regulating roller (2) and adapted to the arc groove (212). The lifting slope (45) drives the sealing sleeve (3) at the end of the push rod (4) to squeeze the seal toward the end face of the hollow shaft of the cathode roller and cooperate with the transmission assembly.

2. A cathode roller airtight test sealing device according to claim 1, characterized in that: A support frame (11) is mounted on the base (1), a positioning frame (111) is mounted on the top of the support frame (11), a transmission assembly is embedded in the positioning frame (111), a pair of support legs (112) are mounted on the bottom of the positioning frame (111), and the pair of support legs (112) are mounted on the surface of the base (1), and the regulating roller (2) is rotatably connected to the side wall of the support frame (11).

3. A cathode roller airtight test sealing device according to claim 2, characterized in that: The transmission assembly includes a friction wheel (12), the friction wheel (12) is rotatably mounted on a positioning frame (111), the bottom of the friction wheel (12) is meshed with a friction driven wheel (24) mounted on the surface of the regulating roller (2), the upper surface of the friction wheel (12) is adapted to a friction meshing wheel (31) mounted on the surface of the sealing sleeve (3), a transmission shaft (121) is mounted at the rotation center of the friction wheel (12), and a crank (122) is mounted at the end of the transmission shaft (121).

4. The cathode roller airtight test sealing device according to claim 1, characterized in that: A slider (222) is slidably provided on the combination slot (21), and the upper surface of the slider (222) is rotatably connected to the swing arm (221). A flat plate (23) is installed on the top block (22), and a limiting rod (231) is movably installed on the flat plate (23). The bottom of the limiting rod (231) is installed on the base (1), and a limiting plate (232) is installed on the top of the limiting rod (231). The diameter of the limiting plate (232) is larger than the diameter of the limiting rod (231).

5. The cathode roller airtight test sealing device according to claim 1, characterized in that: A connecting pipe (35) is installed on the side wall of the sealing sleeve (3), and a matching valve and a pressure gauge are installed on the connecting pipe (35). A sealing gasket (312) is installed on the end face of the sealing sleeve (3), and the sealing gasket (312) is matched with the end face of the hollow shaft of the cathode roller. A sealing strip (311) is installed on the side wall of the sealing sleeve (3), and a roller (321) is installed on the top plate (32).

6. The cathode roller airtight test sealing device according to claim 3, characterized in that: The positioning frame (111) is provided with a mounting frame (34), and a lower pressing groove (341) and a pushing groove (342) are provided on the mounting frame (34), the lower pressing groove (341) and the pushing groove (342) are connected to each other, and the lower pressing groove (341) is an inclined groove, and the pushing groove (342) is a horizontal groove. A sliding rod (331) is provided inside the lower pressing groove (341) for sliding, and one end of the sliding rod (331) is installed on the side wall of the collar (33), and the other end of the sliding rod (331) is provided with a telescopic rod (332) in a compressed state, and the bottom of the telescopic rod (332) is horizontally slidably connected to the surface of the positioning frame (111).

7. The cathode roller airtight test sealing device according to claim 6, characterized in that: A push rod (4) is movably installed inside the side wall of the mounting frame (34), a first ball (412) is installed at one end of the push rod (4), the first ball (412) is fitted on the side wall of the sealing sleeve (3), a pressure plate (41) is installed on the push rod (4), a return spring (411) is sleeved on the push rod (4), one end of the return spring (411) is clamped on the mounting frame (34), and the other end of the return spring (411) is clamped on the pressure plate (41).

8. The cathode roller airtight test sealing device according to claim 2, characterized in that: A vertical plate (422) is mounted on the positioning frame (111), a turntable (42) is rotatably mounted on the vertical plate (422), a plurality of pairs of guide blocks (421) are mounted on the turntable (42), the guide blocks (421) and the second ball bearings (413) mounted on the other end of the push rod (4) are mutually adapted, a rocker arm (43) is mounted at the rotation center of the turntable (42), a strip groove (431) is provided on the rocker arm (43), and a protrusion (432) is slidably provided on the strip groove (431).

9. The cathode roller airtight test sealing device according to claim 8, characterized in that: The positioning frame (111) is provided with a vertical rod (44) that is movable and inserted therethrough. A synchronous plate (443) is installed at the bottom of the vertical rod (44), and a protrusion (444) is installed on the synchronous plate (443). The protrusion (444) is adapted to the jacking slope (45). The top of the vertical rod (44) is connected to the protrusion (432). A baffle (441) is installed on the vertical rod (44). A limit spring (442) is sleeved on the side wall of the vertical rod (44). One end of the limit spring (442) is clamped on the baffle (441), and the other end of the limit spring (442) is clamped on the baffle (441).

10. A method for using a cathode roller airtight test sealing device, characterized in that: The cathode roller airtight test sealing device according to any one of claims 1 to 9 is used in a method of using the cathode roller airtight test sealing device, comprising the following steps: Step 1: Place the cathode roller on the top block (22), then rotate the friction wheel (12) to drive the friction driven wheel (24) to rotate, thereby synchronously driving the adjustment roller (2) to rotate, at this time, the end of the swing arm (221) slides horizontally along the spiral groove (211), and then the soil hole top block (22) moves vertically downward, moving the cathode roller toward the top plate (32) of the equipment; Step 2: After the cathode roller slides onto the top plate (32), the top plate (32) is pressed downward, and the top plate (32) drives the sealing sleeve (3) to slide along the lower pressing groove (341). Since the lower pressing groove (341) is in an inclined state, the sealing sleeve (3) gradually moves toward the hollow shaft of the cathode roller, and finally the sealing sleeve (3) is inserted into the outer wall of the hollow shaft of the cathode roller; Step 3: When the friction wheel (12) continues to rotate, the end of the swing arm (221) slides in the arc groove (212), so that the top block (22) stops moving. However, the lifting slope (45) drives the top rod (4) to move upward, and the top rod (4) pushes the top rocker arm (43) to deflect, thereby driving the turntable (42) connected to the rocker arm (43) to rotate, and the position of the guide block (421) on the turntable (42) changes, and the lifting rod (4) slides horizontally, and finally squeezes the sealing sleeve (3) to move toward the end face of the hollow shaft of the cathode roller, and the sealing operation is completely performed; Step 4: When the sealing sleeve (3) moves, the friction meshing wheel (31) on the sealing sleeve (3) meshes with the friction wheel (12), and then the operator fills the cathode roller with gas at a pressure of 0.03 MPa from the connecting pipe (35) on the sealing sleeve (3) and maintains the pressure for (120) minutes; Step 5: During the pressure holding period, the operator continuously rotates the friction wheel (12) forward and reverse, and the friction wheel (12) drives the meshed sealing sleeve (3) to rotate. The synchronous extrusion of the sealing sleeve (3) drives the cathode roller to rotate, thereby simulating the sealing performance of the cathode roller under normal rotation. When the pressure holding is completed, the product is qualified if the pressure drop is ≤1%.

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