Vacuum suction roller

Abstract

The utility model discloses a kind of vacuum adsorption roller, including roller, hollow center shaft, transmission shaft, driving mechanism and air extraction pipe;The outer circumferential surface of the roller is equipped with a plurality of evenly distributed adsorption holes, the adsorption hole is communicated with the inside of the roller, the outer circumferential sleeve of the roller is equipped with cloth cover, and the cloth cover corresponds with a plurality of adsorption holes;The first end of the center shaft is rotatably connected with one end of the transmission shaft, the outer circumferential sleeve of the center shaft is equipped with fixed block, the roller is sleeved in the outer circumferential of the fixed block, center shaft and transmission shaft, the other end of the transmission shaft is connected with the driving mechanism, the outer circumferential sleeve of the transmission shaft is equipped with bearing with seat, the outer circumferential surface of the center shaft is circumferentially spaced apart and is equipped with two baffles, the baffle is located in the roller and the two ends of baffle are respectively close to the two ends of the roller, the end of the baffle away from center shaft is in contact with the inner circumferential surface of the roller.The utility model improves the quality of base material.

Description

Technical Field

[0001] This utility model relates to the field of battery production technology, specifically to a vacuum adsorption roller. Background Technology

[0002] Currently, in the coating process of substrates such as foil, a steel roller traction mechanism is generally used to pull the substrate by interrupting its tension to prevent slippage. The steel roller traction mechanism typically first presses the substrate onto its steel roller using a pressure roller to interrupt the substrate's tension. Then, a steel roller drive mechanism drives the steel roller to rotate, moving the substrate and thus achieving traction. During this movement, if the substrate deflects and experiences uneven tension, the tightness on both sides of the substrate will differ. As the substrate passes through the pressure roller and steel roller, the looser portion will be squeezed by the pressure roller, causing wrinkles and reducing the substrate's quality. Utility Model Content

[0003] To overcome the shortcomings of the existing technology, this utility model provides a vacuum adsorption roller, which improves the quality of the substrate.

[0004] The technical solution adopted by this utility model to solve its technical problem is: A vacuum adsorption roller includes a roller, a hollow central shaft, a drive shaft, a drive mechanism, and an exhaust pipe. The outer circumferential surface of the roller has multiple evenly distributed adsorption holes, which communicate with the interior of the roller. A cloth sleeve is fitted around the outer circumference of the roller, and the cloth sleeve corresponds to the multiple adsorption holes. A first end of the central shaft is rotatably connected to one end of the drive shaft. A fixing block is fitted around the outer circumference of the central shaft. The roller is fitted around the fixing block, the central shaft, and the drive shaft. The other end of the drive shaft is connected to the drive mechanism, which drives the drive shaft to rotate relative to the central shaft, thereby causing the roller and the cloth sleeve to rotate relative to the central shaft. The spindle rotates, and a bearing with a seat is fitted around the outer circumference of the transmission shaft. Two baffles are spaced apart circumferentially on the outer circumferential surface of the central shaft. The baffles are located inside the roller, and the two ends of the baffles are close to the two ends of the roller. The end of the baffle away from the central shaft is in contact with the inner circumferential surface of the roller. An adsorption area is formed between the side of the two baffles that are close to each other and the inner circumferential surface of the roller. The outer circumferential surface of the central shaft is provided with air holes, which are connected to the interior of the central shaft and the adsorption area. The second end of the central shaft is connected to one end of the exhaust pipe, and the interior of the central shaft is connected to the interior of the exhaust pipe. An installation block is fitted around the outer circumference of the exhaust pipe.

[0005] As a preferred technical solution, the roller includes an annular sintered metal mesh, a first cover plate, and a second cover plate. The outer circumferential surface of the sintered metal mesh is provided with a plurality of adsorption holes and a cloth sleeve is fitted thereon. The adsorption holes communicate with the interior of the sintered metal mesh. The sintered metal mesh is arranged around the outer circumference of the central shaft and the transmission shaft. The first cover plate is disposed at one end of the sintered metal mesh and fitted around the outer circumference of the transmission shaft. The second cover plate is disposed at the other end of the sintered metal mesh. The second cover plate and the other end of the sintered metal mesh are rotatably fitted around the outer circumference of the fixed block. The baffle is located inside the sintered metal mesh, and the end of the baffle away from the central shaft contacts the inner circumferential surface of the sintered metal mesh. The adsorption area is formed between the side of the two baffles that are close to each other and the inner circumferential surface of the sintered metal mesh.

[0006] As a preferred technical solution, a sealing strip is provided at the end of the baffle away from the central axis, the sealing strip is in contact with the inner circumferential surface of the roller, and a plug is provided inside the central axis, the plug being close to the first end of the central axis.

[0007] As a preferred technical solution, a width adjustment mechanism is also included. This mechanism comprises an adjustment drive, a worm gear, a worm wheel, a first lead screw, a second lead screw, and an optical axis. A bracket is fixedly sleeved around the outer periphery of the central shaft, located between the roller and the exhaust pipe. The two ends of the worm gear are rotatably disposed on the side of the bracket away from the roller. The adjustment drive is connected to one end of the worm gear. The first lead screw, the optical axis, and the second lead screw are all located within the adsorption area. The optical axis is located between the first and second lead screws, and its two ends are respectively connected to the first end of the first lead screw and the first end of the second lead screw. Both the first and second lead screws are rotatable. The first lead screw is disposed on the outer circumferential surface of the central shaft. The second end of the first lead screw passes through the fixing block hole of the fixing block and the bracket hole of the bracket and is fitted with the worm gear. The threads of the first lead screw and the second lead screw have opposite directions. The worm gear meshes with the worm. The first lead screw and the second lead screw are respectively threaded with two moving plates. The two moving plates are symmetrically arranged about the center of the adsorption area. The two ends of the moving plates are respectively engaged with the side of the two baffles that are close to each other. The first arc surface at the bottom of the moving plate is engaged with the outer circumferential surface of the central shaft. The second arc surface at the top of the moving plate is engaged with the inner circumferential surface of the roller. The air hole is located between the two moving plates.

[0008] As a preferred technical solution, the included angle between the two baffles is 70-90 degrees.

[0009] As a preferred technical solution, the second end of the central shaft is detachably connected to one end of the exhaust pipe; a clamp is fitted around the outer periphery of the second end of the central shaft, the clamp protruding from the end of the second end of the central shaft and having a notch at the end of the clamp near the exhaust pipe, one end of the exhaust pipe being inserted into the clamp, an arc-shaped clamp arm being formed on the inner wall of one end of the notch, the clamp arm cooperating with the exhaust pipe, a gap between the end of the clamp arm and the inner wall of the other end of the notch, a first hole being provided on the inner wall of the other end of the notch, the first hole extending to the outer periphery of the clamp, a second hole being provided at the end of the clamp arm, and fasteners being installed in the first and second holes; a sealing ring is provided at the second end of the central shaft, the sealing ring abutting against the end of one end of the exhaust pipe.

[0010] As a preferred technical solution, the exhaust pipe is movable relative to the mounting block, the mounting block is provided with a mounting linear bearing, the mounting linear bearing is sleeved on the outer periphery of the exhaust pipe, the outer periphery of the exhaust pipe is sleeved with a connecting block, the mounting linear bearing is located between the connecting block and the central shaft, and the connecting block and the mounting linear bearing are detachably connected.

[0011] As a preferred technical solution, the other end of the exhaust pipe is provided with a vacuum tube, the interior of the vacuum tube is connected to the interior of the exhaust pipe, and a negative pressure gauge is provided on the vacuum tube.

[0012] As a preferred technical solution, a support mechanism is also included. The support mechanism includes a support base, an adjusting screw, a support block, and a guide rod. A connecting plate is provided on one side of the top of the support base. The adjusting screw passes through a first through hole in the support base and is threadedly connected to the first through hole of the support base. The head of the adjusting screw is located below the support base, and the end of the adjusting screw is located above the support base and is inserted into a socket at the bottom of the support block. A mounting component is provided at the bottom of the support block, and the mounting component is sleeved on the outer periphery of the adjusting screw. The support block is located below the clamp, and an arc-shaped support groove is provided at the top of the support block for engaging with the clamp. The guide rod passes through a second through hole in the support base. One end of the guide rod is located below the support base, and the other end of the guide rod is connected to the bottom of the support block. A linear bearing is provided in the second through hole of the support base, and the linear bearing is sleeved on the outer periphery of the guide rod.

[0013] As a preferred technical solution, the driving mechanism includes a drive motor and a synchronous belt transmission assembly. The synchronous belt transmission assembly includes a driving pulley, a driven pulley, and a synchronous belt sleeved on the outer periphery of the driving pulley and the driven pulley. The driving pulley is sleeved on the outer periphery of the output end of the drive motor, and the driven pulley is sleeved on the outer periphery of the other end of the transmission shaft.

[0014] The beneficial effects of this utility model are as follows: This utility model, through the setting of a roller, a hollow central shaft, a transmission shaft, a drive mechanism, and an exhaust pipe, creates a vacuum by drawing a vacuum through the adsorption holes of the roller, allowing the substrate to be adsorbed onto the cloth sleeve on the outer circumference of the roller, thus isolating the tension of the substrate and preventing slippage. The drive mechanism drives the roller and cloth sleeve to rotate, thereby moving the substrate adsorbed on the cloth sleeve to achieve traction. Compared with the prior art, the vacuum adsorption traction method does not cause compression of the substrate, thus preventing wrinkles from forming in the loose part of the substrate and improving the quality of the substrate. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 This is a schematic diagram of the structure of a vacuum adsorption roller at a first angle according to an embodiment of the present invention; Figure 2 yes Figure 1 A schematic diagram of the second angle of the vacuum adsorption roller shown; Figure 3 , Figure 4 yes Figure 1 A cross-sectional schematic diagram of the vacuum adsorption roller shown. Figure 5 yes Figure 1 A schematic diagram of the structure of the sintered metal mesh, the second cover plate, and the supporting rotating bearing of the vacuum adsorption roller shown. Figure 6 yes Figure 1 The diagram shows the structure of the central shaft, drive shaft, first cover plate, second cover plate, and width adjustment mechanism of the vacuum adsorption roller. Figure 7 yes Figure 6 A schematic diagram of the structure of the central shaft, bracket, adjusting drive component, worm gear, and worm wheel shown. Figure 8 yes Figure 1 A schematic diagram of the structure of the central shaft, exhaust pipe, vacuum pipe, and support mechanism of the vacuum adsorption roller shown; Figure 9 yes Figure 1 A schematic diagram of the structure of the vacuum adsorption roller at the first angle of its central axis; Figure 10 yes Figure 1 A schematic diagram of the second angle of the central axis of the vacuum adsorption roller shown; Figure 11 yes Figure 1 The diagram shows the structural schematic of the support mechanism for the vacuum adsorption roller.

[0017] Figure label: 10. Roller; 11. Sintered metal mesh; 12. First cover plate; 121. First protrusion; 13. Second cover plate; 131. Second protrusion; 20. Central shaft; 21. Fixing block; 211. Fixing block hole; 22. Supporting rotating bearing; 23. Connecting rotating bearing; 24. Air hole; 25. Plug; 26. Baffle; 261. Adsorption area; 262. Sealing strip; 27. Bracket; 28. Clamp; 281. Clamp arm; 2811. Second hole; 2812. Gap; 282. First hole; 283. Fastener; 29. ​​Sealing ring; 291. Annular groove; 30. Drive shaft; 31. Mounted bearing; 40. Drive mechanism; 41. Driven wheel; 50. Exhaust duct; 51. Mounting block; 52. Mounting linear bearing; 521. Connecting fasteners; 53. Connecting block; 60. Vacuum tube; 61. Negative pressure gauge; 70. Width adjustment mechanism; 71. Adjustment drive component; 72. Worm gear; 73. Worm wheel; 721. Protective cover; 722. Worm gear bearing seat; 74. First lead screw; 741. First fixed seat; 7411. First flange bearing; 742. Fixed block flange bearing; 75. Second lead screw; 751. Second fixed seat; 7511. Second flange bearing; 76. Optical shaft; 761. Universal joint; 77. Moving plate; 771. Second arc surface; 80. Support mechanism; 81. Support base; 811. Connecting plate; 82. Adjusting screw; 821. Mounting component; 83. Support block; 831. Support groove; 832. Support block hole; 833. Guide rod fastener; 84. Guide rod; 85. Support linear bearing. Detailed Implementation

[0018] The following will clearly and completely describe the concept, specific structure, and technical effects of this utility model in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model. Furthermore, all connections / linkages involved in the patent do not simply refer to direct contact between components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. The various technical features in this utility model can be combined interactively without contradicting each other.

[0019] Please refer to Figures 1 to 4An embodiment of this utility model provides a vacuum adsorption roller, including a roller 10, a hollow central shaft 20, a transmission shaft 30, a drive mechanism 40, an exhaust pipe 50, a width adjustment mechanism 70, and a support mechanism 80.

[0020] The outer circumferential surface of the roller 10 is provided with a plurality of evenly distributed adsorption holes (not shown in the figure), and a cloth sleeve (not shown in the figure) is fitted around the outer circumference of the roller 10, the cloth sleeve corresponding to the plurality of adsorption holes. The cloth sleeve is provided to prevent foreign objects from entering the roller 10.

[0021] The first end of the central shaft 20 is rotatably connected to one end of the transmission shaft 30. Specifically, one end of the transmission shaft 30 extends into the first end of the central shaft 20, and a connecting bearing 23 is provided inside the first end of the central shaft 20. The connecting bearing 23 is sleeved on the outer circumference of one end of the transmission shaft 30. A fixing block 21 is fixedly sleeved on the outer circumference of the central shaft 20, for example, by welding. The roller 10 is sleeved on the outer circumference of the fixing block 21, the central shaft 20, and the transmission shaft 30. The other end of the transmission shaft 30 is connected to the drive mechanism 40, which drives the transmission shaft 30 to rotate relative to the central shaft 20, thereby driving the roller 10 and the cloth sleeve to rotate relative to the central shaft 20. A seated bearing 31 is sleeved on the outer circumference of the transmission shaft 30. The seated bearing 31 has a bearing mounting hole. In practical applications, the seated bearing 31 is mounted on the drive side wall plate through its bearing mounting hole and screws to provide mounting support for the transmission shaft 30. Two baffles 26 are spaced circumferentially on the outer periphery of the central shaft 20. The baffles 26 are located inside the roller 10, with their ends close to the ends of the roller 10. The end of the baffle 26 furthest from the central shaft 20 contacts the inner periphery of the roller 10. An adsorption area 261 is formed between the side of the two baffles 26 that is close to each other and the inner periphery of the roller 10. The outer periphery of the central shaft 20 is provided with air holes 24, which communicate with both the interior of the central shaft 20 and the adsorption area 261. The second end of the central shaft 20 is connected to one end of the exhaust pipe 50, and the interior of the central shaft 20 communicates with the interior of the exhaust pipe 50. A mounting block 51 is fitted around the outer periphery of the exhaust pipe 50. The mounting block 51 has mounting holes. In practical applications, the mounting block 51 is mounted on a fixed side wall plate through its mounting holes and screws to provide mounting support for the exhaust pipe 50. The exhaust pipe 50 is used to connect to a vacuuming device, such as a vacuum pump. When the substrate passes over the cloth cover and is located above the adsorption area 261, the vacuuming device can evacuate the adsorption holes corresponding to the adsorption area 261 through the inside of the exhaust pipe 50, the inside of the central shaft 20, the air hole 24, and the adsorption area 261. Thus, the substrate can be adsorbed onto the cloth cover through the adsorption holes corresponding to the adsorption area 261 to break the tension of the substrate and prevent the substrate from slipping. The drive mechanism 40 drives the roller 10 and the cloth cover to rotate, thereby moving the substrate adsorbed on the cloth cover to achieve traction of the substrate. The substrate is, for example, foil.

[0022] In this embodiment, there are four air holes 24, which are spaced apart along the axial direction of the central axis 20. Understandably, the number of air holes 24 can also be other, such as one, two, three, five, etc., which can be set according to the actual situation.

[0023] This invention utilizes a roller 10, a hollow central shaft 20, a transmission shaft 30, a drive mechanism 40, and an exhaust pipe 50. By creating a vacuum in the adsorption holes of the roller 10, the substrate can be adsorbed onto the fabric sleeve on the outer circumference of the roller 10, thus isolating the tension of the substrate and preventing slippage. The drive mechanism 40 drives the roller 10 and the fabric sleeve to rotate, thereby moving the substrate adsorbed on the fabric sleeve to achieve traction. Compared with the prior art, the vacuum adsorption traction method does not compress the substrate, thus preventing wrinkles in the loose parts of the substrate and improving the quality of the substrate.

[0024] A sealing strip 262 is provided at the end of the baffle 26 furthest from the central shaft 20. The sealing strip 262 contacts the inner circumferential surface of the roller 10. A plug 25 is provided inside the central shaft 20, close to the first end of the central shaft 20. The sealing strip 262 serves two purposes: firstly, it provides a seal, ensuring that only the adsorption holes corresponding to the adsorption area 261 are evacuated when the adsorption holes are evacuated by the vacuum equipment; secondly, it prevents damage to the baffle 26 during the rotation of the roller 10. The sealing strip 262 is made of materials such as silicone or rubber. The plug 25 is used to seal the first end of the central shaft 20, facilitating vacuuming of the adsorption holes corresponding to the adsorption area 261 through the inside of the exhaust pipe 50, the inside of the central shaft 20, the air hole 24, and the adsorption area 26.

[0025] In this embodiment, the cross-section of the baffle 26 is formed in an inverted trapezoidal shape, such as... Figure 4 As shown, the included angle A between the two baffles 26 is 70-90 degrees, preferably 80 degrees. This included angle A is the effective wrap angle of the vacuum adsorption roller. The angle value of this included angle A can ensure stable traction of the substrate.

[0026] In this embodiment, a vacuum tube 60 is provided at the other end of the exhaust pipe 50. The interior of the vacuum tube 60 is connected to the interior of the exhaust pipe 50. The vacuum tube 60 is used to connect to a vacuum pumping device. The vacuum pumping device can evacuate the adsorption holes corresponding to the adsorption area 261 through the interior of the vacuum tube 60, the interior of the exhaust pipe 50, the interior of the central shaft 20, the air hole 24, and the adsorption area 26. A negative pressure gauge 61 is provided on the vacuum tube 60 to measure the vacuum level inside the vacuum tube 60.

[0027] The drive mechanism 40 includes a drive motor (not shown in the figure) and a synchronous belt drive assembly. The synchronous belt drive assembly includes a driving pulley (not shown in the figure), a driven pulley 41, and a synchronous belt (not shown in the figure) sleeved on the outer periphery of the driving pulley and the driven pulley 41. The driving pulley is sleeved on the outer periphery of the output end of the drive motor, and the driven pulley 41 is sleeved on the outer periphery of the other end of the transmission shaft 30. In practical applications, the drive motor is mounted on the drive side wall plate. The drive motor drives the driving pulley to rotate, and under the transmission action of the driven pulley 41 and the synchronous belt, it can drive the transmission shaft 30 to rotate.

[0028] Combination Figure 5 and Figure 6 As shown, in this embodiment, the roller 10 includes an annular sintered metal mesh 11, a first cover plate 12, and a second cover plate 13. Using the sintered metal mesh 11 can reduce the weight of the roller 10, and thus reduce the weight of the vacuum adsorption roller.

[0029] The sintered metal mesh 11 is preferably made of stainless steel, which is low in cost. The outer circumferential surface of the sintered metal mesh 11 has multiple adsorption holes and is fitted with a cloth sleeve. The adsorption holes communicate with the interior of the sintered metal mesh 11. The sintered metal mesh 11 is arranged around the outer circumference of the central shaft 20 and the drive shaft 30. A first cover plate 12 is disposed at one end of the sintered metal mesh 11 and is fixedly fitted onto the outer circumference of the drive shaft 30, for example, by welding. In this embodiment, a first protrusion 121 is formed at the end of the first cover plate 12 near the center of the roller 10. The first protrusion 121 is fixedly fitted onto the outer circumference of the drive shaft 30, for example, by welding. The first protrusion 121 is fitted inside one end of the sintered metal mesh 11, and the outer circumferential surface of the first protrusion 121 is sealed to the inner circumferential surface of the sintered metal mesh 11 to achieve a sealing function. The sealing connection is, for example, a welding connection. The second cover plate 13 is disposed at the other end of the sintered metal mesh 11. In this embodiment, a second protrusion 131 is formed at the end of the second cover plate 13 near the center of the roller 10. The second protrusion 131 is sleeved inside the other end of the sintered metal mesh 11, and the outer peripheral surface of the second protrusion 131 is sealed to the inner peripheral surface of the sintered metal mesh 11 to achieve a sealing effect. The sealing connection can be, for example, a welding connection. The other ends of the second cover plate 13 and the sintered metal mesh 11 are rotatably sleeved on the outer periphery of the fixing block 21. The baffle 26 is located inside the sintered metal mesh 11, and the sealing strip 262 at the end of the baffle 26 away from the central axis 20 is in contact with the inner peripheral surface of the sintered metal mesh 11. The adsorption area 261 is formed between the side of the two baffles 26 that are close to each other and the inner peripheral surface of the sintered metal mesh 11.

[0030] In this embodiment, an annular sealing element is fitted on the outer peripheral surface of the fixing block 21. The sealing element contacts the inner peripheral surface of the second cover plate 13, and the sealing element serves a sealing function. A supporting rotating bearing 22 is provided at the other end of the sintered metal mesh 11. The supporting rotating bearing 22 is located between the second protrusion 131 and the center of the sintered metal mesh 11. The supporting rotating bearing 22 is fitted on the outer periphery of the fixing block 21 to provide support for the rotation of the roller 10.

[0031] Combination Figure 6 and Figure 7 As shown, the width adjustment mechanism 70 is used to adjust the adsorption width of the vacuum adsorption roller to adapt to substrates of different widths, thus having a wide range of applications. Specifically, the width adjustment mechanism 70 includes an adjustment drive component 71, a worm gear 72, a worm wheel 73, a first lead screw 74, a second lead screw 75, and an optical shaft 76.

[0032] A bracket 27 is fixedly fitted around the outer periphery of the central shaft 20, and the bracket 27 is located between the roller 10 and the exhaust pipe 50. The two ends of the worm gear 72 are rotatably mounted on the side of the bracket 27 away from the roller 10 via two worm gear bearing seats 722. An adjusting drive component 71 is connected to one end of the worm gear 72. The first lead screw 74, the optical axis 76, and the second lead screw 75 are all located within the adsorption area 261 and above the central shaft 20. The optical axis 76 is located between the first lead screw 74 and the second lead screw 75, and both ends of the optical axis 76 are connected to the first end of the first lead screw 74 and the first end of the second lead screw 75 via two universal joints 761. Both the first lead screw 74 and the second lead screw 75 are rotatably mounted on the outer circumferential surface of the central shaft 20. In this embodiment, a fan-shaped first fixing seat 741 corresponding to the first end of the first lead screw 74 is provided on the outer circumferential surface of the central shaft 20. The two ends of the first fixing seat 741 respectively cooperate with the side of the two baffles 26 that are close to each other. The top end of the first fixing seat 741 is lower than the end of the baffle 26 that is away from the central shaft 20. The first end of the first lead screw 74 passes through the through hole of the first fixing seat 741. A first flange bearing 7411 is provided in the through hole of the first fixing seat 741. The first flange bearing 7411 is sleeved on the first end of the first lead screw 74. The outer circumference of the first lead screw 74 provides rotational support. Two fan-shaped second fixing seats 751 are provided on the outer circumference of the central shaft 20, corresponding to the first and second ends of the second lead screw 75, respectively. The first end of the second lead screw 75 passes through a through hole in one of the second fixing seats 751, and the second end of the second lead screw 75 passes through a through hole in the other second fixing seat 751. A second flange bearing 7511 is provided within the through hole of each second fixing seat 751. The second flange bearings 7511 of the two second fixing seats 751 are respectively sleeved on the outer circumferences of the first and second ends of the second lead screw 75 to provide rotational support. The second end of the first lead screw 74 passes through the fixing block hole 211 of the fixing block 21 and the bracket hole of the bracket 27, and is fitted with the worm gear 73. The threads of the first lead screw 74 and the second lead screw 75 have opposite directions of rotation. The worm gear 73 is located below the worm 72 and meshes with it. The first lead screw 74 and the second lead screw 75 are threadedly fitted with two fan-shaped movable plates 77. The two movable plates 77 are symmetrically arranged about the center of the adsorption area 261. The two ends of the movable plates 77 are respectively engaged with the side of the two baffles 26 that are close to each other. The first arc surface at the bottom of the movable plate 77 is engaged with the outer peripheral surface of the central shaft 20. The second arc surface 771 at the top of the movable plate 77 is engaged with the inner peripheral surface of the metal sintered mesh 11 of the roller 10. The air hole 24 is located between the two movable plates 77.The adjusting drive component 71 is used to drive the worm gear 72 to rotate, which in turn drives the worm wheel 72 to rotate, and in turn drives the first lead screw 74, the optical axis 76, and the second lead screw 75 to rotate. Since the threads of the first lead screw 74 and the second lead screw 75 are opposite, the first lead screw 74 and the second lead screw 75 can drive the two moving plates 77 to move towards each other or away from each other. In practical applications, when the substrate passes over the cloth cover and is located above the adsorption area 261, a vacuum device is used to evacuate the adsorption holes located between the two moving plates 77 through the inside of the vacuum tube 60, the inside of the exhaust pipe 50, the inside of the central shaft 20, the air hole 24, and the adsorption area 261. Thus, the substrate can be adsorbed onto the cloth cover through the adsorption holes located between the two moving plates 77. By adjusting the drive component 71 to drive the two moving plates 77 to move towards each other or away from each other, the length of the adsorption area 261 can be reduced or increased, and the number of adsorption holes corresponding to the adsorption area 261 can be reduced or increased, thereby adjusting the adsorption width.

[0033] In this embodiment, a fixing block flange bearing 742 is provided in the fixing block hole 211. The fixing block flange bearing 742 is sleeved on the outer periphery of the first lead screw 74 to provide rotational support for the first lead screw 74, and the fixing block flange bearing 742 also serves a sealing function. The adjusting drive component 71 is a handwheel or an adjusting motor. The worm 72 and worm wheel 73 are housed in a protective cover 721, which is fixed on the bracket 27. The protective cover 721 provides protection for the worm 72 and worm wheel 73.

[0034] Combination Figures 8 to 11 As shown, the second end of the central shaft 20 is detachably connected to one end of the exhaust pipe 50.

[0035] Specifically, a clamp 28 is fixedly fitted around the second end of the central shaft 20. The clamp 28 protrudes from the second end of the central shaft 20, and a notch is provided at the end of the clamp 28 near the exhaust pipe 50. One end of the exhaust pipe 50 is inserted into the clamp 28. An arc-shaped clamp arm 281 is formed on the inner wall of one end of the notch. The clamp arm 281 cooperates with the exhaust pipe 50. A gap 2812 exists between the end of the clamp arm 281 and the inner wall of the other end of the notch. A first hole 282 is provided on the inner wall of the other end of the notch, extending to the outer circumferential surface of the clamp 28. A second hole 2811 is provided at the end of the clamp arm 281. Fasteners 283, which are quick-release screws, are installed in both the first hole 282 and the second hole 2811 for quick release. A sealing ring 29 is provided at the second end of the central shaft 20 (see...). Figure 3 The sealing ring 29 abuts against one end of the exhaust pipe 50. The sealing ring 29 serves to seal and prevent air leakage. In this embodiment, the second end of the central shaft 20 is provided with an annular groove 291, and the sealing ring 29 is disposed in the annular groove 291.

[0036] The exhaust duct 50 is movable relative to the mounting block 51. A linear bearing 52 is installed within the mounting block 51 and is fitted around the outer periphery of the exhaust duct 50. The linear bearing 52 provides support for the movement of the exhaust duct 50, improving its stability. A connecting block 53 is fixedly fitted around the outer periphery of the exhaust duct 50. The linear bearing 52 is located between the connecting block 53 and the central shaft 20. The connecting block 53 and the linear bearing 52 are detachably connected. By connecting the connecting block 53 and the linear bearing 52 together, the exhaust duct 50 and the mounting block 51 can be fixed together to prevent the exhaust duct 50 from moving. In this embodiment, the connecting block 53 has a first mounting hole, and the linear bearing 52 has a second mounting hole corresponding to the first mounting hole. Fasteners 521, such as screws, are installed in the second mounting hole and the corresponding first mounting hole. The number of first and second mounting holes can be set according to actual conditions.

[0037] The support mechanism 80 includes a support base 81, an adjusting screw 82, a support block 83, and a guide rod 84. A connecting plate 811 is provided on one side of the top of the support base 81. The connecting plate 811 has connecting plate holes. In practical applications, the connecting plate 811 is installed on a fixed side wall plate through the connecting plate holes and screws. The adjusting screw 82 passes through a first through hole in the support base 81. The first through hole is a threaded hole. The adjusting screw 82 is threadedly connected to the first through hole in the support base 81. The head of the adjusting screw 82 is located below the support base 81, and the end of the adjusting screw 82 is located above the support base 81 and engages with the insertion hole at the bottom of the support block 83. The bottom of the support block 83 is provided with a mounting part 821, which is movably sleeved on the outer periphery of the adjusting screw 82. The support block 83 is located below the clamp 28 and is used to support the clamp 28. The top of the support block 83 is provided with an arc-shaped support groove 831, which is adapted to the clamp 28 and is used to cooperate with the clamp 28. The support groove 831 is provided to prevent damage to the clamp 28. The guide rod 84 is provided through the second through hole of the support base 81. One end of the guide rod 84 is located below the support base 81, and the other end of the guide rod 84 is connected to the bottom end of the support block 83. In this embodiment, the bottom end of the support block 83 is provided with a support block hole 832 that passes through the top of the support block 83. The other end of the guide rod 84 is inserted into the support block hole 832. Guide rod fasteners 833, such as screws, are installed in the support block hole 832 and the guide rod hole at the other end of the guide rod 84. Rotating the head of the adjusting screw 82 can move the adjusting screw 82 up or down, thereby pushing the support block 83 up and down, which in turn can drive the guide rod 84 up and down. The guide rod 84 plays a guiding role in the up and down movement of the support block 83, which can improve the stability of the up and down movement of the support block 83.

[0038] In this embodiment, there are two guide rods 84, and the adjusting screw 82 is located between the two guide rods 84.

[0039] A linear bearing 85 is provided in the second through hole of the support base 81, and the linear bearing 85 is sleeved on the outer periphery of the guide rod 84. The linear bearing 85 provides movable support for the guide rod 84.

[0040] The above structure facilitates the replacement of the fabric cover. When replacing the fabric cover, first fold the old fabric cover around the outer periphery of the sintered metal mesh 11 of the roller 10 and move it to, for example, the second cover plate 13. Then, rotate the head of the adjusting screw 82, which will move the support block 83 upwards until the support groove 831 engages with the clamp 28 to support the second end of the central shaft 20. Then, remove the mounting fastener 283 from the first hole 282 and the second hole 2811, and then remove the connecting fastener 521 from the first mounting hole and the second mounting hole. Then, move the exhaust pipe 50 and the vacuum pipe 60 away from the central shaft 20 until one end of the exhaust pipe 50 is inside the mounting linear bearing 52. Then, remove the old fabric cover from the gap between the mounting linear bearing 52 and the clamp 28, and then move the folded new fabric cover from the gap between the mounting linear bearing 52 and the clamp 28 to the second cover plate 13. Then move the exhaust pipe 50 and vacuum pipe 60 closer to the central shaft 20 until one end of the exhaust pipe 50 abuts against the sealing ring 29 at the second end of the central shaft 20. Then reinstall the connecting fastener 521 in the first and second mounting holes, and engage the clamp arm 281 with the exhaust pipe 50. Then reinstall the mounting fastener 283 in the first hole 282 and the second hole 2811. Then rotate the head of the adjusting screw 82 in the opposite direction, thereby moving the support block 83 downwards to separate the support groove 831 from the clamp 28. Then unfold the new cloth cover and place it around the outer periphery of the sintered metal mesh 11 of the roller 10. Thus, the cloth cover replacement is completed.

[0041] This invention detachably connects the second end of the central shaft 20 to one end of the exhaust pipe 50, and allows the exhaust pipe 50 to move relative to the mounting block 51. When changing the fabric cover, it is only necessary to disconnect the second end of the central shaft 20 from one end of the exhaust pipe 50 and move the exhaust pipe 50 away from the central shaft 20. Other parts do not need to be disassembled, saving time and effort. The support mechanism 80 can support the second end of the central shaft 20 during the fabric cover replacement process without the need for other external support tools. The operation is simple, reducing equipment downtime and improving production efficiency.

[0042] The above is a detailed description of the preferred embodiments of the present utility model. However, the present utility model is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A vacuum adsorption roller, characterized in that, The device includes a roller, a hollow central shaft, a transmission shaft, a drive mechanism, and an exhaust pipe. The outer circumference of the roller has multiple evenly distributed adsorption holes that communicate with the interior of the roller. A fabric sleeve is fitted around the outer circumference of the roller, and the fabric sleeve corresponds to the adsorption holes. A first end of the central shaft is rotatably connected to one end of the transmission shaft. A fixing block is fitted around the outer circumference of the central shaft. The roller is fitted around the fixing block, the central shaft, and the transmission shaft. The other end of the transmission shaft is connected to the drive mechanism, which drives the transmission shaft to rotate relative to the central shaft, thereby causing the roller and the fabric sleeve to rotate relative to the central shaft. The transmission shaft is fitted with a seated bearing on its outer circumference. Two baffles are spaced apart circumferentially on the outer circumferential surface of the central shaft. The baffles are located inside the roller, and their two ends are close to the two ends of the roller. The end of the baffle away from the central shaft is in contact with the inner circumferential surface of the roller. An adsorption area is formed between the side of the two baffles that are close to each other and the inner circumferential surface of the roller. The outer circumferential surface of the central shaft is provided with air holes, which are connected to the interior of the central shaft and the adsorption area. The second end of the central shaft is connected to one end of the exhaust pipe. The interior of the central shaft is connected to the interior of the exhaust pipe. An installation block is fitted on the outer circumference of the exhaust pipe.

2. The vacuum adsorption roller according to claim 1, characterized in that, The roller includes an annular sintered metal mesh, a first cover plate, and a second cover plate. The outer circumferential surface of the sintered metal mesh is provided with a plurality of adsorption holes and a cloth sleeve is fitted thereon. The adsorption holes communicate with the interior of the sintered metal mesh. The sintered metal mesh is arranged around the outer circumference of the central shaft and the drive shaft. The first cover plate is disposed at one end of the sintered metal mesh and fitted around the outer circumference of the drive shaft. The second cover plate is disposed at the other end of the sintered metal mesh. The second cover plate and the other end of the sintered metal mesh are rotatably fitted around the outer circumference of the fixed block. The baffle is located inside the sintered metal mesh, and the end of the baffle away from the central shaft is in contact with the inner circumferential surface of the sintered metal mesh. The adsorption area is formed between the side of the two baffles that are close to each other and the inner circumferential surface of the sintered metal mesh.

3. The vacuum adsorption roller according to claim 1, characterized in that, A sealing strip is provided at the end of the baffle away from the central axis. The sealing strip is in contact with the inner circumferential surface of the roller. A plug is provided inside the central axis, and the plug is close to the first end of the central axis.

4. The vacuum adsorption roller according to claim 1, characterized in that, It also includes a width adjustment mechanism, which comprises an adjustment drive, a worm gear, a worm wheel, a first lead screw, a second lead screw, and an optical axis. A bracket is fixedly sleeved on the outer periphery of the central shaft, and the bracket is located between the roller and the exhaust pipe. The two ends of the worm gear are rotatably disposed on the side of the bracket away from the roller. The adjustment drive is connected to one end of the worm gear. The first lead screw, the optical axis, and the second lead screw are all located within the adsorption area. The optical axis is located between the first lead screw and the second lead screw, and its two ends are respectively connected to the first end of the first lead screw and the first end of the second lead screw. The first lead screw and the second lead screw are rotatably disposed within the central shaft. On the outer circumferential surface of the central shaft, the second end of the first lead screw passes through the fixing block hole of the fixing block and the bracket hole of the bracket and is fitted with the worm gear. The threads of the first lead screw and the second lead screw have opposite directions. The worm gear meshes with the worm. The first lead screw and the second lead screw are respectively threaded with two moving plates. The two moving plates are symmetrically arranged about the center of the adsorption area. The two ends of the moving plates are respectively engaged with the side of the two baffles that are close to each other. The first arc surface at the bottom of the moving plate is engaged with the outer circumferential surface of the central shaft. The second arc surface at the top of the moving plate is engaged with the inner circumferential surface of the roller. The air hole is located between the two moving plates.

5. The vacuum adsorption roller according to claim 1, characterized in that, The included angle between the two baffles is 70-90 degrees.

6. The vacuum adsorption roller according to claim 1, characterized in that, The second end of the central shaft is detachably connected to one end of the exhaust pipe; a clamp is fitted around the outer periphery of the second end of the central shaft, the clamp protruding from the end of the second end of the central shaft and having a notch at the end of the clamp near the exhaust pipe, one end of the exhaust pipe being inserted into the clamp, an arc-shaped clamp arm being formed on the inner wall of one end of the notch, the clamp arm engaging with the exhaust pipe, a gap between the end of the clamp arm and the inner wall of the other end of the notch, a first hole being provided on the inner wall of the other end of the notch, the first hole extending to the outer periphery of the clamp, a second hole being provided at the end of the clamp arm, and fasteners being installed in the first and second holes; a sealing ring is provided at the second end of the central shaft, the sealing ring abutting against the end of one end of the exhaust pipe.

7. The vacuum adsorption roller according to claim 6, characterized in that, The exhaust pipe is movable relative to the mounting block. The mounting block is equipped with a linear bearing, which is sleeved on the outer periphery of the exhaust pipe. A connecting block is sleeved on the outer periphery of the exhaust pipe. The linear bearing is located between the connecting block and the central shaft. The connecting block and the linear bearing are detachably connected.

8. The vacuum adsorption roller according to claim 1, characterized in that, The other end of the exhaust pipe is equipped with a vacuum tube, the interior of which is connected to the interior of the exhaust pipe, and a negative pressure gauge is installed on the vacuum tube.

9. The vacuum adsorption roller according to claim 7, characterized in that, The system also includes a support mechanism comprising a support base, an adjusting screw, a support block, and a guide rod. A connecting plate is provided on one side of the top of the support base. The adjusting screw passes through a first through hole in the support base and is threadedly connected to the first through hole. The head of the adjusting screw is located below the support base, and the end of the adjusting screw is located above the support base and engages with a insertion hole at the bottom of the support block. A mounting component is provided at the bottom of the support block, and the mounting component is fitted around the outer periphery of the adjusting screw. The support block is located below the clamp, and an arc-shaped support groove is provided at the top of the support block for engaging with the clamp. The guide rod passes through a second through hole in the support base, with one end located below the support base and the other end connected to the bottom of the support block. A linear bearing is provided within the second through hole of the support base, and the linear bearing is fitted around the outer periphery of the guide rod.

10. The vacuum adsorption roller according to claim 1, characterized in that, The drive mechanism includes a drive motor and a synchronous belt drive assembly. The synchronous belt drive assembly includes a drive pulley, a driven pulley, and a synchronous belt sleeved on the outer periphery of the drive pulley and the driven pulley. The drive pulley is sleeved on the outer periphery of the output end of the drive motor, and the driven pulley is sleeved on the outer periphery of the other end of the drive shaft.

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