Pressing equipment for non-woven fabric production

Abstract

The invention provides pressing equipment for non-woven fabric production, and belongs to the field of non-woven fabric pressing equipment.The pressing equipment comprises a base, the top of the base is fixedly connected with a control assembly box and a power assembly box, the side wall of the control assembly box is fixedly connected with an upper protective cover, a pair of roller barrels are arranged below the upper protective cover, and cloth is arranged between the pair of roller barrels; a cleaning assembly is arranged on the power assembly box, the hot oil circulating assembly is arranged on the roller barrel, and the hot oil circulating assembly is used for providing uniform temperature for the roller barrel; and the auxiliary heating assembly is arranged at the end of the roller barrel, and the auxiliary heating assembly keeps a constant temperature for the roller barrel. According to the invention, when the hot oil circulation assembly breaks down, the auxiliary heating assembly can be immediately started, and the built-in heating pipe continuously heats the oil body, so that the uniformity and stability of the temperature of the roller are maintained under the condition of not depending on an external circulation system.

Description

Technical Field

[0001] This invention relates to the field of nonwoven fabric pressing equipment, and more specifically, to a pressing equipment for nonwoven fabric production. Background Technology

[0002] Nonwoven fabric bonding is a key process that uses external force to solidify a loose fiber web into a fabric with a certain strength and structure. In thermal bonding technology, this process mainly relies on a pair of heated rollers. When the fiber web (usually polypropylene PP) passes through the pressing zone formed by these two high-temperature rollers, the fibers melt at the contact points and bond together under the pressure applied by the rollers. As the fiber web leaves the pressing zone and cools, the molten areas solidify, thus firmly integrating the loose fiber web into a continuous nonwoven fabric without the use of chemical adhesives.

[0003] In existing nonwoven fabric hot rolling production lines, a circulating heat transfer oil heating roll system is commonly used to achieve precise temperature control. This system heats the oil to the required process temperature via a heat transfer oil heating component, and then a circulating pump drives the high-temperature heat transfer oil through a rotary joint into the flow channels inside the roll, providing a stable heat source for fiber melting and bonding. However, this process is highly dependent on the normal operation of key mechanical components such as the oil furnace, circulating pump, pipelines, and rotary joints. If any of these components malfunctions, the circulation and heating of the heat transfer oil will immediately cease, causing the roll temperature to drop rapidly. Unable to maintain the high temperatures required for fiber melting, the pressing process fails, and the entire production line must be shut down immediately. This unplanned downtime not only wastes raw materials but also disrupts production plans, resulting in significant economic losses.

[0004] How to invent a pressing device for nonwoven fabric production to improve these problems has become an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0005] To overcome the above deficiencies, the present invention provides a pressing device for nonwoven fabric production, which aims to improve the problems mentioned in the background.

[0006] This invention is implemented as follows:

[0007] This invention provides a pressing device for nonwoven fabric production, comprising a base, a control component box and a power component box fixedly connected to the top of the base, an upper protective cover fixedly connected to the side wall of the control component box, a pair of roller bodies arranged below the upper protective cover, and fabric arranged between the pair of roller bodies. A cleaning component is arranged on the power component box, the cleaning component including a cleaning shaft rotatably connected to the side wall of the power component box, a shaft gear fixedly sleeved on the outer side wall of the cleaning shaft, and further comprising: a hot oil circulation component, the hot oil circulation component being arranged on the roller bodies, the hot oil circulation component being used to provide a uniform temperature to the roller bodies; and an auxiliary heating component, the auxiliary heating component being arranged at the end of the roller bodies, the auxiliary heating component being used to maintain a constant temperature for the roller bodies.

[0008] Preferably, the power component box is equipped with a power motor, a heat transfer oil heating component, a heat transfer oil circulation pump and a negative pressure component. The cleaning component also includes a cleaning cloth sleeve fixedly sleeved on the cleaning shaft. A negative pressure connector is fixedly connected to the side wall of the control component box. The negative pressure connector has multiple negative pressure through holes on the side near the cleaning cloth sleeve. The negative pressure connector is connected to the negative pressure component through a duct.

[0009] Preferably, the hot oil circulation assembly includes a transmission sleeve rotatably connected to the side wall of the power assembly box. The transmission sleeve is fixedly connected to the end of the roll body. A driving gear and a driven gear are fixedly sleeved on the outer side wall of the transmission sleeve. The driving gear is connected to the power motor via a synchronous belt. A pair of driven gears on the roll body are meshed. The driven gear 23 is meshed with a shaft gear. Multiple circumferentially arranged spiral oil passages are opened on the inner side wall of the roll body. A fixed seat is fixedly connected to the side wall of the control assembly box.

[0010] Preferably, a rotating shaft is provided inside the roll body, an impeller is sleeved on the outer wall of the rotating shaft, an inner support is fixedly connected to the inner wall of the roll body, and a heating tube is fixedly connected to the inner support.

[0011] Preferably, the transmission sleeve is configured as a double-layer pipe, with the two layers of pipes fixedly connected. A first oil passage is provided between the two layers of pipes, and a second oil passage is provided in the inner layer of pipe. Multiple third oil passages are opened in the end side wall of the roll body. The first oil passage, the third oil passage, and the spiral oil passage are sequentially connected. Multiple circumferentially arranged static oil passages are opened in the end side wall of the roll body. One end of the static oil passage is connected to the first oil passage, and the other end of the static oil passage is connected to the interior of the roll body. A side oil passage is provided on the side wall of the static oil passage. One end of the side oil passage extends to the first oil passage, and the other end of the side oil passage does not extend to the inner side wall of the end of the roll body. A stopper ball is provided in the static oil passage. The diameter of the stopper ball is larger than the end diameter of the static oil passage on the roll body.

[0012] Preferably, the inner wall of the roll body away from the transmission sleeve has multiple circumferentially distributed circulation ports, and the interior of the roll body is connected to the spiral oil passage through the circulation ports. The inner wall of the roll body has a set of cable channels, and the end of the cable channels extends to the end of the heating tube.

[0013] Preferably, the auxiliary heating assembly includes an end cap fixedly connected to the end of the roll body, a support sleeve fixedly connected to the side wall of the end cap, a plurality of electromagnets fixedly connected to the end cap, the electromagnets being located in an annular groove on the end cap, friction plates fixedly connected to the ends of the plurality of electromagnets, a ring sleeve fixedly connected to the end of the end cap, the ring sleeve being tubularly arranged, a plurality of circumferentially distributed sliding balls slidably connected to the side wall of the friction plate, a plurality of circumferentially distributed first springs fixedly connected to the inner side wall of the friction plate, a ball seat fixedly connected to the end of the first springs, and one side of the sliding ball penetrating the side wall of the friction plate.

[0014] Preferably, an inner toothed sleeve is slidably provided on the inner sidewall of the ring sleeve. The inner toothed sleeve is tubular with one end sealed. Multiple gear teeth are provided on the inner circumferential sidewall of the inner toothed sleeve. A slip ring is rotatably connected to the outer circumferential sidewall of the end of the inner toothed sleeve. A support shaft is rotatably connected to the sidewall of the fixed seat. A first gear is sleeved on the outer sidewall of the support shaft. The first gear meshes with the inner toothed sleeve. A second gear is fixedly sleeved on the end of the rotating shaft. The second gear meshes with the first gear. The rotating shaft passes through the end cover and is rotatably connected to the end cover. The rotational position of the end cover and the rotating shaft is sealed by an oil seal.

[0015] Preferably, a fixing ring is fixedly sleeved on the fixing base, and a sliding ring is rotatably connected to the outer circumferential side wall of the fixing ring. Multiple through holes are provided through the sliding ring, and a top cover is fixedly connected to the end of each through hole. A carbon brush is slidably connected inside the through hole. Multiple conductive rings are provided on the outer circumferential side wall of the fixing ring, and the conductive rings slide in contact with the end of the carbon brush. A second spring is provided on the top of the carbon brush, and the two ends of the second spring abut against the top of the carbon brush and the top cover, respectively. A pressing rod is slidably connected inside the sliding ring, and multiple fixing rods are fixedly connected to the outer side wall of the sliding ring. The fixing rods are fixedly connected to the outer side wall of the ring sleeve.

[0016] Preferably, the extrusion rod is provided with multiple extrusion sections, the extrusion sections are in contact with the carbon brushes in each through hole, and a third spring is fixedly connected to the end of the extrusion rod, the third spring being fixedly connected to the inner wall of the sliding ring.

[0017] The beneficial effects of the present invention are as follows: When the equipment is running normally, the hot oil circulation component drives the heat transfer oil to circulate in the spiral oil channel through the double-layer oil channel in the transmission sleeve, thereby achieving uniform heating of the roll. At this time, the inner toothed sleeve in the auxiliary heating component is kept separated from the friction plate under the action of the spring, and the carbon brush is kept in stable contact with the conductive ring under the limit of the extrusion mechanism but without relative sliding wear, ensuring that the auxiliary heating component is in a state of being triggered at any time without generating frictional wear.

[0018] When the hot oil circulation component fails, the auxiliary heating component is activated immediately. After the electromagnet is energized, it attracts the inner toothed sleeve, causing it to come into contact with the friction plate and be driven by the rotation of the roll. Then, through the gear transmission mechanism, it drives the rotating shaft and impeller to rotate in the opposite direction. Using the principle of axial flow pump, it forces the residual heat transfer oil inside the roll to form a closed circulation. The built-in heating tube continuously heats the oil, thereby maintaining the uniformity and stability of the roll temperature without relying on the external circulation system. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a three-dimensional structural diagram of a pressing device for nonwoven fabric production provided by an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the negative pressure connector structure of a nonwoven fabric production pressing equipment provided by an embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the spiral oil passage structure of a pressing equipment for nonwoven fabric production provided by an embodiment of the present invention;

[0023] Figure 4 This is a schematic diagram of the cross-sectional structure of the roller body of a pressing equipment for nonwoven fabric production provided by an embodiment of the present invention;

[0024] Figure 5 This is a schematic diagram of the cross-sectional structure of the transmission sleeve of a pressing equipment for nonwoven fabric production provided by an embodiment of the present invention;

[0025] Figure 6 This is a schematic diagram of the position of the electromagnet in a pressing device for nonwoven fabric production provided by an embodiment of the present invention;

[0026] Figure 7 This is a schematic diagram of the sliding ball position of a pressing device for nonwoven fabric production provided by an embodiment of the present invention;

[0027] Figure 8 This is a schematic diagram of the position of the inner toothed sleeve in a pressing device for nonwoven fabric production provided by an embodiment of the present invention;

[0028] Figure 9 This is a schematic diagram of the position of the fixing ring in a pressing device for nonwoven fabric production provided by an embodiment of the present invention;

[0029] Figure 10 This is a schematic diagram of the sliding ring planar structure of a pressing device for nonwoven fabric production provided by an embodiment of the present invention.

[0030] Figure 11 This is a schematic diagram of the extrusion rod structure of a pressing equipment for nonwoven fabric production provided by an embodiment of the present invention;

[0031] Figure 12 This is a cross-sectional structural diagram of an auxiliary heating component for a nonwoven fabric production pressing equipment provided by an embodiment of the present invention.

[0032] In the diagram: 1. Base; 2. Control component box; 3. Power component box; 4. Upper cover; 5. Roller cylinder; 6. Fabric; 11. Cleaning shaft; 12. Shaft gear; 13. Cleaning cloth sleeve; 14. Negative pressure connector; 21. Transmission sleeve; 22. Drive gear; 23. Driven gear; 24. Spiral oil passage; 25. Fixed seat; 26. Rotating shaft; 27. Impeller; 31. Inner support; 32. Heating tube; 33. First oil passage; 34. Second oil passage; 35. Third oil passage; 36. Static oil passage; 37. Side oil passage 38. Ball; 39. Circulation port; 40. End cap; 41. Support sleeve; 42. Electromagnet; 43. Friction plate; 44. Ring sleeve; 45. Sliding ball; 46. Ball seat; 47. First spring; 48. Cable channel; 51. Inner gear sleeve; 52. Slip ring; 53. Support shaft; 54. First gear; 55. Second gear; 61. Fixed ring; 62. Sliding ring; 63. Carbon brush; 64. Second spring; 65. Top cap; 66. Extrusion rod; 67. Fixed rod; 68. Extrusion part; 69. Third spring. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Example, refer to Figure 1-Figure 4A pressing device for nonwoven fabric production includes a base 1, a control component box 2 and a power component box 3 fixedly connected to the top of the base 1, an upper protective cover 4 fixedly connected to the side wall of the control component box 2, a pair of roller cylinders 5 arranged below the upper protective cover 4, and a fabric 6 arranged between the pair of roller cylinders 5. A cleaning component is arranged on the power component box 3, the cleaning component includes a cleaning shaft 11 rotatably connected to the side wall of the power component box 3, a shaft gear 12 fixedly sleeved on the outer side wall of the cleaning shaft 11, and further includes: a hot oil circulation component, the hot oil circulation component is arranged on the roller cylinders 5, the hot oil circulation component is used to provide a uniform temperature for the roller cylinders 5; and an auxiliary heating component, the auxiliary heating component is arranged at the end of the roller cylinders 5, the auxiliary heating component maintains a constant temperature for the roller cylinders 5.

[0035] The power component box 3 is equipped with a power motor, a heat transfer oil heating component, a heat transfer oil circulation pump and a negative pressure component. The cleaning component also includes a cleaning cloth sleeve 13 fixedly sleeved on the cleaning shaft 11. A negative pressure connector 14 is fixedly connected to the side wall of the control component box 2. The negative pressure connector 14 is provided with multiple negative pressure through holes on the side near the cleaning cloth sleeve 13. The negative pressure connector 14 is connected to the negative pressure component through a duct.

[0036] It should be noted that the power motor in the power assembly box 3 drives the drive gear 22 to rotate via a synchronous belt, which in turn drives the transmission sleeve 21 fixedly connected to it to rotate. The transmission sleeve 21 is fixedly connected to the end of the roller cylinder 5. Through two meshing driven gears 23, it drives a pair of roller cylinders 5 to rotate synchronously in opposite directions, so that the fabric 6 is subjected to uniform pressure between the two and completes the pressing.

[0037] The hot oil circulation assembly includes a transmission sleeve 21 rotatably connected to the side wall of the power assembly box 3. The transmission sleeve 21 is fixedly connected to the end of the roll body 5. The outer side wall of the transmission sleeve 21 is fixedly fitted with a drive gear 22 and a driven gear 23. The drive gear 22 is connected to the power motor via a synchronous belt. A pair of driven gears 23 on the roll body 5 are meshed. The driven gears are meshed with the shaft gear 12. The inner side wall of the roll body 5 has multiple circumferentially arranged spiral oil passages 24. The side wall of the control assembly box 2 is fixedly connected with a fixing seat 25.

[0038] It should be noted that during the continuous pressing process of nonwoven fabric, when the fabric 6 is pressed between the high-temperature and high-pressure rollers 5, its surface fibers may partially melt, producing trace amounts of viscous molten residue that adheres to the roller surface. If not removed in time, this residue will not only transfer to the new fabric during subsequent pressing, forming "crystal points" or "stains," but may also cause uneven accumulation, resulting in differences in heat transfer on the roller surface and affecting the uniformity of pressing. Therefore, this equipment is equipped with a cleaning component for online cleaning of the roller surface 5. When the driven gear 23 rotates, it meshes with the drive shaft gear 12, causing the cleaning shaft 11 to rotate. The cleaning cloth sleeve 13, fixedly sleeved on the cleaning shaft 11, rotates with the cleaning shaft 11 and rolls in contact with the roller surface 5, wiping away adhering contaminants. This cleaning cloth sleeve 13 is made of polytetrafluoroethylene coated fabric, which has extremely low surface energy and excellent high-temperature resistance. When rolling in contact with the roller surface, it can effectively wipe away residues that are still in a semi-molten state, while also preventing itself from being adhered, thus achieving a self-cleaning function.

[0039] When the cleaning cloth sleeve 13 rolls in contact with the surface of the high-temperature roller, the molten residue adhering to the roller surface is physically transferred to the surface of the cleaning cloth sleeve 13. When the negative pressure component is running, a local high-speed airflow field is formed, which enhances the convective heat transfer intensity of the surface of the cleaning cloth sleeve 13, accelerates the heat transfer process of the molten residue adhering to its surface to the surrounding air, promotes its rapid cooling and transformation from a viscous state to a brittle solid state, and peels these solidified residue fragments off the surface of the cleaning cloth sleeve 13 and sucks them into the air duct, and finally transports them to the dust collection device for centralized treatment.

[0040] Reference Figures 4-7 The inside of the roll body 5 is provided with a rotating shaft 26, and an impeller 27 is sleeved on the outer side wall of the rotating shaft 26. An inner support 31 is fixedly connected to the inner side wall of the roll body 5, and a heating tube 32 is fixedly connected to the inner support 31.

[0041] The transmission sleeve 21 is arranged in a double-layer pipe configuration, with the two layers of pipes fixedly connected. A first oil passage 33 is provided between the two layers of pipes, and a second oil passage 34 is provided inside the inner layer of pipe. Multiple third oil passages 35 are opened in the end side wall of the roll body 5. The first oil passage 33, the third oil passage 35, and the spiral oil passage 24 are connected in sequence. Multiple circumferentially arranged static oil passages 36 are opened in the end side wall of the roll body 5. One end of the static oil passage 36 is connected to the first oil passage 33, and the other end of the static oil passage 36 is connected to the interior of the roll body 5. A side oil passage 37 is provided on the side wall of the static oil passage 36. One end of the side oil passage 37 extends to the first oil passage 33, and the other end of the side oil passage 37 does not extend to the inner side wall of the end of the roll body 5. A stopper ball 38 is provided in the static oil passage 36. The diameter of the stopper ball 38 is larger than the end diameter of the static oil passage 36 on the roll body 5.

[0042] The heat transfer oil first enters through the first oil passage 33. The oil pressure inside the first oil passage 33 is greater than the oil pressure inside the roll body 5. When the heat transfer oil enters the static oil passage 36, it pushes the stopper ball 38 to block the end of the static oil passage 36 on the roll body 5, preventing the heat transfer oil from entering the interior of the roll body 5 from the static oil passage 36.

[0043] The inner wall of the roll body 5 away from the transmission sleeve 21 has multiple circumferentially distributed circulation ports 39. The interior of the roll body 5 is connected to the spiral oil passage 24 through the circulation ports 39. A set of cable channels 48 is provided on the inner wall of the roll body 5. The end of the cable channel 48 extends to the end of the heating tube 32.

[0044] When the equipment is started, the heat transfer oil heating component installed in the power component box 3 heats the heat transfer oil to the set temperature. Then, driven by the heat transfer oil circulation pump, the high-temperature heat transfer oil is transported through the first oil passage 33 in the double-layer structure of the transmission sleeve 21, flows into the third oil passage 35 in the side wall of the end of the roll body 5, and further enters the spiral oil passage 24 distributed circumferentially along the inner side wall of the roll body 5. Because the spiral oil passage 24 is arranged in a circular path, the heat transfer oil can evenly transfer heat to the entire metal wall of the roll body 5 when flowing inside it, achieving highly uniform heating of the roll surface temperature. The heat transfer oil flows out of the spiral oil passage 24 through multiple circulation ports 39 opened on the inner side wall of the other end of the roll body 5, enters the internal space of the roll, and finally returns to the power component box 3 via the second oil passage 34 for reheating, forming a closed circulation system.

[0045] Reference Figure 7-12 The auxiliary heating assembly includes an end cap 40 fixedly connected to the end of the roll body 5. A support sleeve 41 is fixedly connected to the side wall of the end cap 40. Multiple electromagnets 42 are fixedly connected to the end cap 40. The electromagnets 42 are located in the annular groove on the end cap 40. Friction plates 43 are fixedly connected to the ends of the multiple electromagnets 42. A ring 44 is fixedly connected to the end of the end cap 40. The ring 44 is tubular. Multiple circumferentially distributed sliding balls 45 are slidably connected inside the side wall of the friction plate 43. Multiple circumferentially distributed first springs 47 are fixedly connected to the inner side wall of the friction plate 43. A ball seat 46 is fixedly connected to the end of the first spring 47. One side of the sliding ball 45 penetrates the side wall of the friction plate 43.

[0046] It should be noted that the auxiliary heating component is used to automatically activate the emergency heating and internal oil circulation mechanism when the hot oil circulation component fails (such as the failure of the heat transfer oil circulation pump or abnormal temperature drop) in order to maintain the temperature stability of the roll body 5. The control system uses a programmable logic controller (PLC, such as S7-1200) to receive real-time signals from a pressure sensor (such as WIKA A-10 type) and a PT100 platinum resistance temperature sensor installed in the first oil passage 33. When an abnormal state such as a sudden drop in oil temperature or zero circulating pressure is detected, the controller immediately executes emergency logic: First, the oil inlet of the first oil passage 33 and the second oil passage 34 are cut off through the solenoid valve (located on the pipeline between the transmission sleeve 21 and the hot oil circulation pump), so that the heat transfer oil remaining in the cavity inside the roll body 5 is retained in the system to prevent rapid heat loss; then, the controller outputs current to multiple electromagnets 42, which are connected in series (i.e., the current flows through each electromagnet coil in sequence to form a unified control loop), and are connected in parallel with the heating tube 32 on the inner support 31 to the power supply line to ensure that both are powered synchronously in emergency situations. The heating tube 32 is used to keep the heat transfer oil at a suitable temperature.

[0047] Multiple electromagnets 42 generate magnetic force when energized, which strongly attracts the sidewall of the inner gear sleeve 51 through the friction plate 43 fixed at its end. This causes the inner gear sleeve 51 to overcome the elastic force of the first spring 47 and move axially toward the electromagnet 42. At the same time, it squeezes multiple circumferentially distributed sliding balls 45 that are slidably connected inside its sidewall, forcing the sliding balls 45 to contract inward toward the friction plate 43. Ultimately, this causes the end face of the inner gear sleeve 51 to fit tightly against the end face of the friction plate 43. Since the end cap 40 is fixedly connected to the end of the rotating roll body 5, it... During continuous rotation, the end cap 40, electromagnet 42, friction plate 43, and the attracted and adhered inner gear sleeve 51 rotate synchronously. At this time, the support shaft 53 fixed on the fixed base 25 and the first gear 54 sleeved on its outer side remain stationary, while the teeth on the inner wall of the rotating inner gear sleeve 51 mesh with the stationary first gear 54, thereby driving the first gear 54 to rotate around the support shaft 53. The first gear 54 further drives the rotating shaft 26 to rotate through the second gear 55 meshing with it. Due to the transmission of the external meshing of the gears... The rotating shaft 26 rotates in the opposite direction to the rotation of the roll body 5. The reverse rotation of the shaft 26 drives the impeller 27, which is sleeved on its outer wall, to rotate in the internal cavity of the roll body 5. Using the principle of axial flow pump, the heat transfer oil inside the roll body 5 is pushed axially towards the end where the plug ball 38 is located. As the oil pressure at the front end of the plug ball 38 gradually increases and exceeds the pressure at its rear end, the plug ball 38 is pushed away from its original position of blocking the end of the static oil passage 36, thereby opening the internal circulation channel. This allows the heat transfer oil to flow from the inside of the roll body 5 through the end of the static oil passage 36, and then enter the first oil passage 33 through the side oil passage 37. Subsequently, it flows through the third oil passage 35 and the spiral oil passage 24 in sequence, and then flows back to the internal cavity of the roll through the circulation port 39 at the other end, forming a closed internal forced circulation loop. At the same time, the heating tube 32 on the inner support 31 is continuously heated under power supply to ensure the temperature of the heat transfer oil is stable, thereby maintaining the uniform temperature distribution of the roll body 5 and effectively preventing pressing quality problems caused by temperature drop.

[0048] An inner gear sleeve 51 is slidably provided on the inner sidewall of the ring sleeve 44. The inner gear sleeve 51 is a tubular structure with one end sealed. Multiple gear teeth are provided on the inner circumferential sidewall of the inner gear sleeve 51. A slip ring 52 is rotatably connected to the outer circumferential sidewall of the end of the inner gear sleeve 51. A support shaft 53 is rotatably connected to the sidewall of the fixed seat 25. A first gear 54 is sleeved on the outer sidewall of the support shaft 53. The first gear 54 meshes with the inner gear sleeve 51. A second gear 55 is fixedly sleeved on the end of the rotating shaft 26. The second gear 55 meshes with the first gear 54. The rotating shaft 26 passes through the end cover 40 and is rotatably connected to the end cover 40. The rotational position of the end cover 40 and the rotating shaft 26 is sealed by an oil seal.

[0049] A fixing ring 61 is fixedly sleeved on the fixing base 25. A sliding ring 62 is rotatably connected to the outer circumferential side wall of the fixing ring 61. Multiple through holes are provided through the sliding ring 62. A top cover 65 is fixedly connected to the end of the through hole. A carbon brush 63 is slidably connected inside the through hole. Multiple conductive rings are provided on the outer circumferential side wall of the fixing ring 61. The conductive rings slide in contact with the end of the carbon brush 63. A second spring 64 is provided on the top of the carbon brush 63. The two ends of the second spring 64 abut against the top of the carbon brush 63 and the top cover 65, respectively. A pressing rod 66 is slidably connected inside the sliding ring 62. Multiple fixing rods 67 are fixedly connected to the outer side wall of the sliding ring 62. The fixing rods 67 are fixedly connected to the outer side wall of the ring sleeve 44.

[0050] The extrusion rod 66 is provided with multiple extrusion parts 68, which are in contact with carbon brushes 63 in each through hole. A third spring 69 is fixedly connected to the end of the extrusion rod 66, and the third spring 69 is fixedly connected to the inner wall of the sliding ring 62.

[0051] It should be noted that when the thermal circulation component is working normally and the auxiliary heating component is not activated, multiple first springs 47 extend outward in their natural state, pushing the ball seats 46 at their ends to move outward. The ball seats 46 then push multiple circumferentially distributed sliding balls 45 in contact with them to extend outward, so that the outer ends of the sliding balls 45 abut against the side wall of the inner gear sleeve 51, thereby maintaining the inner gear sleeve 51 in its initial position away from the friction plate 43, so that the inner gear sleeve 51 is not forced to rotate with the rotation of the roll cylinder 5, reducing frictional loss; at this time, the inner gear sleeve 51 passes through the end The rotating slip ring 52 pushes the extrusion rod 66. Under the thrust of the slip ring 52, the extrusion rod 66 overcomes the elastic force of the third spring 69 and moves into the slip ring 62. The multiple extrusion parts 68 on it then press against the multiple carbon brushes 63 in the through hole of the slip ring 62, increasing the friction between the outer wall of the carbon brush 63 and the inner wall of the slip ring 62. This restricts the carbon brush 63 radially, thereby preventing the carbon brush 63 from rubbing and wearing against the conductive ring on the outer wall of the fixing ring 61 under the continuous elastic force of the second spring 64 at the top, and extending the service life of the carbon brush 63.

[0052] The cable channel 48 houses the power supply cables connecting the heating tube 32 and the electromagnet 42. The channel is sealed with silicone rubber to prevent heat transfer oil leakage. These cables extend from the cable channel 48 and connect to the carbon brush 63. The sliding ring 62 is connected to the ring sleeve 44 via multiple fixing rods 67 fixed to its outer wall. Therefore, when the roll body 5 rotates, the ring sleeve 44 drives the fixing rods 67 and the sliding ring 62 to rotate synchronously around the fixing ring 61, causing the cables connecting the carbon brush 63 to rotate with the sliding ring 62, preventing the cables from tangling or knotting due to rotation. When the heat circulation component malfunctions and the electromagnet 42 is energized and attracts the inner toothed sleeve 51, the inner toothed sleeve 51... Pulled forcefully towards the friction plate 43, the sliding ball 45 is squeezed and retracted, and the slip ring 52 moves inward accordingly, causing its thrust on the extrusion rod 66 to disappear. At this time, the elastic force of the third spring 69 is released, pushing the extrusion rod 66 outward, causing the extrusion part 68 to disengage from the carbon brush 63, releasing the radial limit of the carbon brush 63. Under the elastic force of the second spring 64, the carbon brush 63 stably maintains sliding contact with the conductive ring on the fixed ring 61, thereby ensuring that the emergency power supply line is unobstructed, and the current can be smoothly transmitted through the conductive ring, carbon brush 63, and cable to the heating tube 32 and electromagnet 42, ensuring the normal operation of the emergency heating and oil circulation functions.

[0053] It should be noted that the specific model and specifications of the motor need to be selected and determined based on the actual specifications of the device. The specific selection and calculation method adopts the existing technology in this field, so it will not be described in detail here.

[0054] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the invention by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the invention should be included within the scope of protection of the invention.

Claims

1. A pressing device for nonwoven fabric production, comprising a base (1), wherein a control component box (2) and a power component box (3) are fixedly connected to the top of the base (1), an upper protective cover (4) is fixedly connected to the side wall of the control component box (2), a pair of roller cylinders (5) are arranged below the upper protective cover (4), and a fabric (6) is arranged between the pair of roller cylinders (5), a cleaning component is arranged on the power component box (3), the cleaning component includes a cleaning shaft (11) rotatably connected to the side wall of the power component box (3), and a shaft gear (12) is fixedly sleeved on the outer side wall of the cleaning shaft (11), characterized in that, Also includes: A hot oil circulation assembly is disposed on the roll body (5) and is used to provide a uniform temperature to the roll body (5); An auxiliary heating component is provided at the end of the roll body (5) to maintain a constant temperature for the roll body (5).

2. The pressing equipment for nonwoven fabric production according to claim 1, characterized in that, The power component box (3) is equipped with a power motor, a heat transfer oil heating component, a heat transfer oil circulation pump and a negative pressure component. The cleaning component also includes a cleaning cloth sleeve (13) fixedly sleeved on the cleaning shaft (11). The side wall of the control component box (2) is fixedly connected to a negative pressure connector (14). The negative pressure connector (14) has multiple negative pressure through holes on the side near the cleaning cloth sleeve (13). The negative pressure connector (14) is connected to the negative pressure component through a duct.

3. The pressing equipment for nonwoven fabric production according to claim 1, characterized in that, The hot oil circulation assembly includes a transmission sleeve (21) rotatably connected to the side wall of the power assembly box (3). The transmission sleeve (21) is fixedly connected to the end of the roll body (5). The outer side wall of the transmission sleeve (21) is fixedly fitted with a drive gear (22) and a driven gear (23). The drive gear (22) is connected to the power motor via a synchronous belt. A pair of driven gears (23) on the roll body (5) are meshed. The driven gears (23) are meshed with the shaft gear (12). The inner side wall of the roll body (5) has multiple circumferentially arranged spiral oil channels (24). The side wall of the control assembly box (2) is fixedly connected with a fixing seat (25).

4. The pressing equipment for nonwoven fabric production according to claim 3, characterized in that, The inside of the roll body (5) is provided with a rotating shaft (26), and an impeller (27) is sleeved on the outer side wall of the rotating shaft (26). An inner support (31) is fixedly connected to the inner side wall of the roll body (5), and a heating tube (32) is fixedly connected to the inner support (31).

5. The pressing equipment for nonwoven fabric production according to claim 4, characterized in that, The transmission sleeve (21) is arranged in a double-layer pipe configuration, with the two layers of pipes fixedly connected. A first oil passage (33) is provided between the two layers of pipes, and a second oil passage (34) is located inside the inner layer of pipe. Multiple third oil passages (35) are opened in the end side wall of the roll body (5). The first oil passage (33), the third oil passage (35), and the spiral oil passage (24) are sequentially connected. Multiple circumferentially arranged static oil passages (36) are opened in the end side wall of the roll body (5). One end of the static oil passage (36) is connected to the first oil passage (33), the third oil passage (35), and the spiral oil passage (24). An oil passage (33) is connected to the first oil passage (33), and the other end of the static oil passage (36) is connected to the interior of the roll body (5). A side oil passage (37) is provided on the side wall of the static oil passage (36). One end of the side oil passage (37) extends to the first oil passage (33), and the other end of the side oil passage (37) does not extend to the inner side wall of the end of the roll body (5). A stopper ball (38) is provided in the static oil passage (36), and the diameter of the stopper ball (38) is larger than the end diameter of the static oil passage (36) on the roll body (5).

6. The pressing equipment for nonwoven fabric production according to claim 5, characterized in that, The inner wall of the roll body (5) away from the transmission sleeve (21) is provided with a plurality of circumferentially distributed circulation ports (39). The interior of the roll body (5) is connected to the spiral oil passage (24) through the circulation ports (39). A set of cable channels (48) is provided on the inner wall of the roll body (5). The end of the cable channel (48) extends to the end of the heating tube (32).

7. The pressing equipment for nonwoven fabric production according to claim 4, characterized in that, The auxiliary heating assembly includes an end cap (40) fixedly connected to the end of the roll body (5). A support sleeve (41) is fixedly connected to the side wall of the end cap (40). Multiple electromagnets (42) are fixedly connected to the end cap (40). The electromagnets (42) are located in an annular groove on the end cap (40). Friction plates (43) are fixedly connected to the ends of the multiple electromagnets (42). A ring sleeve (44) is fixedly connected to the end of the end cap (40). The ring sleeve (44) is tubular. Multiple circumferentially distributed sliders (45) are slidably connected to the side wall of the friction plate (43). Multiple circumferentially distributed first springs (47) are fixedly connected to the inner side wall of the friction plate (43). A ball seat (46) is fixedly connected to the end of the first spring (47). One side of the slider (45) penetrates the side wall of the friction plate (43).

8. The pressing equipment for nonwoven fabric production according to claim 7, characterized in that, The inner sidewall of the ring sleeve (44) is slidably provided with an inner toothed sleeve (51). The inner toothed sleeve (51) is a tubular structure with one end sealed. Multiple gear teeth are provided on the inner sidewall of the inner toothed sleeve (51). A slip ring (52) is rotatably connected to the outer sidewall of the end of the inner toothed sleeve (51). A support shaft (53) is rotatably connected to the sidewall of the fixed seat (25). A first gear (54) is sleeved on the outer sidewall of the support shaft (53). The first gear (54) meshes with the inner toothed sleeve (51). A second gear (55) is fixedly sleeved on the end of the rotating shaft (26). The second gear (55) meshes with the first gear (54). The rotating shaft (26) passes through the end cover (40) and is rotatably connected to the end cover (40). The rotation position of the end cover (40) and the rotating shaft (26) is sealed by an oil seal.

9. A pressing device for nonwoven fabric production according to claim 8, characterized in that, A fixing ring (61) is fixedly sleeved on the fixing base (25). A sliding ring (62) is rotatably connected to the outer circumferential side wall of the fixing ring (61). Multiple through holes are provided through the sliding ring (62). A top cover (65) is fixedly connected to the end of the through hole. A carbon brush (63) is slidably connected inside the through hole. Multiple conductive rings are provided on the outer circumferential side wall of the fixing ring (61). The conductive rings slide in contact with the end of the carbon brush (63). A second spring (64) is provided on the top of the carbon brush (63). The two ends of the second spring (64) abut against the top of the carbon brush (63) and the top cover (65) respectively. A pressing rod (66) is slidably connected inside the sliding ring (62). Multiple fixing rods (67) are fixedly connected to the outer side wall of the sliding ring (62). The fixing rods (67) are fixedly connected to the outer side wall of the ring sleeve (44).

10. A pressing device for nonwoven fabric production according to claim 9, characterized in that, The extrusion rod (66) is provided with a plurality of extrusion parts (68), the extrusion parts (68) are in contact with the carbon brushes (63) in each through hole, and a third spring (69) is fixedly connected to the end of the extrusion rod (66), the third spring (69) is fixedly connected to the inner sidewall of the sliding ring (62).

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