Nonwoven fabric moisture conditioning rewinder

Abstract

The present application relates to the technical field of non-woven fabric production, in particular to a non-woven fabric liquid adding and rewinding machine. The purpose is to provide a non-woven fabric liquid adding and rewinding machine, which should have the characteristics of uniform humidification, good rewinding quality and environmentally friendly process. The technical scheme is a non-woven fabric liquid adding and rewinding machine, which comprises a rack, a motor, unwinding mechanisms and rewinding mechanisms arranged on both sides of the rack, and humidifying mechanisms and deviation correcting mechanisms arranged between the unwinding mechanisms and the rewinding mechanisms. The unwinding mechanism comprises an unwinding shaft rotatably positioned on the right side of the rack, an unwinding arm swingably positioned above the unwinding shaft, an unwinding cylinder connecting the rack and the unwinding arm, a plurality of unwinding rollers rotatably positioned on the unwinding arm, and an unwinding conveyor belt surrounding the unwinding rollers.

Description

Technical Field

[0001] This invention relates to the field of nonwoven fabric production technology, specifically a nonwoven fabric liquid rehydration and rewinding machine. Background Technology

[0002] Non-woven fabric is the basic raw material for cleaning products (wet wipes, face towels, bath towels, wiping cloths, mops, etc.).

[0003] In the production of cleaning products, there is a liquid-adding process, which involves adding water, fragrances, waxes, and other ingredients to non-woven fabrics to meet the diverse functional and sensory needs of different users. For example, in the manufacturing of compressed towels, the dry non-woven fabric raw materials need to undergo a "moistening" pretreatment, that is, by adding water to bring the non-woven fabric to a suitable moisture content before it is sent into a compression mold for pressing, thereby obtaining a round, disc-shaped compressed towel product with a significantly reduced volume. If pressure is applied directly to the dry non-woven fabric, effective compression and shaping cannot be achieved. Currently, the liquid-adding process mainly uses spraying devices, such as the hot water spraying mechanism for folding fabric in a compressed towel machine disclosed in Chinese patent document CN 218288409 U, which includes a fabric feeding mechanism and a water spray tank. However, this method has the following drawbacks: 1. The water spraying method cannot accurately adjust the spray volume, resulting in uneven humidification of the non-woven fabric. In addition, this device is usually integrated with the towel compression machine, with only an unwinding mechanism and no winding mechanism. The unwound non-woven fabric enters the subsequent production steps immediately after being sprayed with water, which affects the quality of the final product. 2. The unwinding mechanism uses a center-driven method to rotate the fabric roll and release the nonwoven fabric. Therefore, the residence time of the nonwoven fabric in the water spray box is inconsistent. That is, the outer layer of the nonwoven fabric is too dry due to the fast movement speed, while the inner layer of the nonwoven fabric is too wet due to the slow movement speed. 3. The large amount of water mist and fragrance generated during the water spraying process will permeate the entire production workshop, leading to a deterioration of the working environment and adversely affecting production safety and personnel health. 4. This device cannot perform wax coating.

[0004] In addition, due to uneven humidification of the nonwoven fabric, defects such as cracks and burrs are easily generated on the surface of the compressed finished product (see...). Figure 17 As shown in the figure, this resulted in a large number of defective products.

[0005] In conclusion, there is an urgent need to improve and upgrade the existing equipment. Summary of the Invention

[0006] The purpose of this invention is to overcome the shortcomings in the above-mentioned background technology and provide a non-woven fabric liquid-adding re-moistening rewinding machine. This device should have the characteristics of uniform humidification, good winding quality, and environmentally friendly process.

[0007] The technical solution of this invention is: The nonwoven fabric liquid rehydration and rewinding machine includes a frame, a motor, an unwinding mechanism and a winding mechanism arranged on both sides of the frame, and a humidification mechanism and a web guiding mechanism arranged between the unwinding mechanism and the winding mechanism.

[0008] The unwinding mechanism includes an unwinding shaft rotatably positioned on the right side of the frame, an unwinding arm swaying up and down above the unwinding shaft, an unwinding cylinder connecting the frame and the unwinding arm, a plurality of unwinding rollers rotatably positioned on the unwinding arm, and an unwinding conveyor belt surrounding the unwinding rollers. The winding mechanism includes a winding shaft rotatably positioned on the left side of the frame, a winding arm swaying up and down and positioned above the winding shaft, a winding cylinder connecting the frame and the winding arm, several winding rollers rotatably positioned on the winding arm, and a winding conveyor belt surrounding the winding rollers.

[0009] The humidification mechanism includes a humidification box, a lower humidification roller rotatably positioned in the humidification box, and an upper humidification roller rotatably positioned above the lower humidification roller.

[0010] The unwinding arm is rotatably positioned on the frame via an unwinding shaft; in the unwinding mechanism, the first unwinding roller is coaxially connected to the unwinding shaft, the second unwinding roller and the third unwinding roller are rotatably positioned on the unwinding arm, and the unwinding conveyor belt is wrapped around the first unwinding roller, the second unwinding roller and the third unwinding roller.

[0011] The take-up arm is rotatably positioned on the frame via a take-up shaft; in the take-up mechanism, the first take-up roller is coaxially connected to the take-up shaft, the second and third take-up rollers are rotatably positioned on the take-up arm, the flattening roller is rotatably positioned on an adjusting frame connected to the take-up arm, and the take-up conveyor belt wraps around the first take-up roller, the second take-up roller, the third take-up roller, and the flattening roller.

[0012] The width of the winding conveyor belt is greater than the width of the fabric roll; the motor transmits power to the unwinding mechanism, winding mechanism, and humidifying mechanism through the transmission mechanism; the frame is also equipped with a first guide roller, a second guide roller, and a third guide roller; the fabric roll released from the unwinding shaft passes sequentially around the first guide roller, the upper humidifying roller, the second guide roller, the two guide rollers of the correction mechanism, and the third guide roller before winding back to the core installed on the winding shaft.

[0013] The humidification box contains humidifying liquid, and the lower humidifying roller is partially immersed in the humidifying liquid. The lower humidifying roller is a rubber roller, and the vertical distance between the upper and lower humidifying rollers is 20-30 mils.

[0014] It also includes a control air circuit connecting the unwinding cylinder and the winding cylinder; in the control air circuit, the air source is connected to the retraction port of the unwinding cylinder in sequence through the first pressure regulating valve and the first reversing valve, the air source is connected to the retraction port of the winding cylinder in sequence through the first pressure regulating valve and the second reversing valve, and the air source is connected to the retraction port and the extension port of the unwinding cylinder in sequence through the second pressure regulating valve and the third reversing valve.

[0015] In the transmission mechanism, the motor shaft is connected to the drive shaft via the first sprocket set, the drive shaft is connected to the first guide roller via the second sprocket set, the first guide roller is connected to the unwinding speed regulating wheel via the first pulley set, the unwinding speed regulating wheel is connected to the unwinding shaft, the motor shaft is connected to the third guide roller via the third sprocket set, the third guide roller is connected to the take-up speed regulating wheel via the second pulley set, the take-up speed regulating wheel is connected to the take-up shaft, the drive shaft is connected to the lower humidifying roller via the fourth sprocket set, and the lower humidifying roller is connected to the upper humidifying roller via a gear set.

[0016] The unwinding shaft and the winding shaft are air-expanding shafts; the correction mechanism is an integrated correction machine.

[0017] The beneficial effects of this invention are: The humidification mechanism of this invention uses a pair of rollers arranged vertically to re-humidify the nonwoven fabric. It is not only simple in structure and provides uniform humidification, but also does not produce water mist, thus avoiding the pollution of the production environment caused by traditional methods. The unwinding and winding mechanisms of this invention can release and wind up the nonwoven fabric evenly, accurately control the fabric roll tension, and keep the wound fabric roll at its original size, thereby adapting it to subsequent processing and production. Attached Figure Description

[0018] The following describes some specific embodiments of the invention in a detailed manner by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar parts or portions.

[0019] Figure 1 This is one of the main view structural schematic diagrams of the present invention (in a non-working state).

[0020] Figure 2 This is the second schematic diagram of the main structure of the present invention (working state).

[0021] Figure 3 This is a schematic diagram of the front view structure of the unwinding arm of the present invention.

[0022] Figure 4 This is a top view of the unwinding arm of the present invention.

[0023] Figure 5 This is a schematic diagram of the main structure of the winding arm of the present invention.

[0024] Figure 6 This is a top view schematic diagram of the winding arm of the present invention.

[0025] Figure 7 This is a front view structural schematic diagram of the humidification mechanism of the present invention.

[0026] Figure 8 This is a schematic diagram of the humidification mechanism of the present invention from the left side.

[0027] Figure 9 This is a top view of the transmission mechanism of the present invention.

[0028] Figure 10 This is a schematic diagram of the connection relationship of the pneumatic circuit mechanism of the present invention.

[0029] Figure 11 This is a front view schematic diagram of the lifting structure of the present invention.

[0030] Figure 12 This is a right-side view of the lifting structure of the present invention.

[0031] Figure 13 This is a top view of the bearing housing and lifting block of the present invention.

[0032] Figure 14 This is one of the schematic diagrams showing the working state of the adjusting roller of the present invention.

[0033] Figure 15 This is the second schematic diagram of the working state of the adjusting roller of the present invention.

[0034] Figure 16 This is a schematic diagram of a defective fabric roll.

[0035] Figure 17 This is a schematic diagram of a defective compressed towel.

[0036] Figure 18 This is a schematic diagram of an embodiment of the present invention.

[0037] Figure label: Frame 1, Humidification mechanism 2, Tracking mechanism 3, Unwinding shaft 4, First drive sprocket 4.1.1, First driven sprocket 4.1.2, First chain 4.1.3, Second drive sprocket 4.2.1, Second driven sprocket 4.2.2, Second chain 4.2.3, Third drive sprocket 4.3.1, Third driven sprocket 4.3.2, Third chain 4.3.3, Fourth drive sprocket 4.4.1, Fourth driven sprocket 4.4.2, Fourth chain 4. 4.3, First Pulley; 4.5.1, First Transmission Belt; 4.5.2, Second Pulley; 4.6.1, Second Transmission Belt; 4.6.2, First Gear; 4.7.1, Second Gear; 4.7.2, Unwinding Arm; 5, Unwinding Cylinder; 6, Rewinding Shaft; 7, Rewinding Arm; 8, Horizontal Adjustment Groove; 8-1, Rewinding Cylinder; 9, Humidifier Box; 10, Humidifying Liquid; 10.1, Lower Humidifying Roller; 11, Upper Humidifying Roller; 12, Adjusting Roller; 13, Unwinding Shaft; 20, First Unwinding Roller; 21, ... 22. Second unwinding roller; 23. Third unwinding roller; 25. Unwinding conveyor belt; 26. Unwinding speed regulating wheel; 27. Rewinding speed regulating wheel; 30. Rewinding shaft; 31. First rewinding roller; 32. Second rewinding roller; 33. Third rewinding roller; 34. Flattening roller; 35. Rewinding conveyor belt; 36. Adjusting frame; 36-1. High / low adjustment groove; 40. Motor; 41. First guide roller; 42. Second guide roller; 43. Third guide roller; 44. Drive shaft; 50. Air source; 51. First pressure regulating valve. 52, second pressure regulating valve, 61, second directional valve, 62, third directional valve, 63, first air passage, 71, second air passage, 72, third air passage, 73, fourth air passage, 74, fifth air passage, 75, sixth air passage, 76, seventh air passage, 77, eighth air passage, 78, bearing seat, 81, groove, 81.1, slide groove, 81.2, lifting block, 82.1, guide rail, 83, support seat, 84, screw, 85, adjusting nut, spring, 87, cloth roll, 90. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0039] like Figure 1 As shown, the nonwoven fabric liquid rehydration and rewinding machine includes a frame 1, an unwinding mechanism, a winding mechanism, a humidifying mechanism 2, a web guiding mechanism 3, a motor 40, a transmission mechanism, and a control air circuit.

[0040] The unwinding mechanism is used to release the fabric roll and is located on the right side of the frame. The winding mechanism is used to gather the fabric roll and is located on the left side of the frame. The humidifying mechanism and the web-correcting mechanism are located between the unwinding mechanism and the winding mechanism. The nonwoven fabric released from the unwinding mechanism passes through the humidifying mechanism for moisture reabsorption and the web-correcting mechanism for web correction before being rewound into a fabric roll in the winding mechanism. The motor transmits power to the unwinding mechanism, the winding mechanism, and the humidifying mechanism through a transmission mechanism.

[0041] like Figure 1 As shown, in the unwinding mechanism, the unwinding arm 5 and the unwinding shaft 4 are arranged vertically. The unwinding shaft and the unwinding rotating shaft 20 are rotatably positioned on the frame. The unwinding arm is positioned on the unwinding rotating shaft by means of bearings, allowing it to swing up and down. The unwinding cylinder 6 connects the frame and the unwinding arm (the housing of the unwinding cylinder is rotatably hinged to the frame, and the piston rod of the unwinding cylinder is rotatably hinged to the unwinding arm). Several unwinding rollers are rotatably positioned on the unwinding arm, and the unwinding conveyor belt 25 is wound around the unwinding rollers. The unwinding shaft is an air-expansion shaft.

[0042] like Figure 3 As shown, the unwinding arm is an upwardly arched bow shape. The unwinding rollers include a first unwinding roller 21, a second unwinding roller 22, and a third unwinding roller 23 arranged in a triangle. The first unwinding roller is coaxially connected to the unwinding shaft. The first and third unwinding rollers are rotatably positioned at both ends of the unwinding arm, and the second unwinding roller is rotatably positioned at the arched portion in the middle of the unwinding arm. The unwinding conveyor belt wraps around the first, second, and third unwinding rollers. The unwinding conveyor belt between the first and third unwinding rollers drives the fabric roll mounted on the unwinding shaft to rotate.

[0043] Because a wider unwinding conveyor belt requires a larger unwinding arm, its weight also increases. Tests have shown that when the width of the unwinding conveyor belt is less than the width of the fabric roll, the weight of the unwinding arm is sufficient to ensure that the unwinding conveyor belt presses the fabric roll firmly and drives it to rotate. Figure 2 As shown, the arc-shaped unwinding arm ensures that the unwinding conveyor belt has enough space to extend upwards, allowing the unwinding conveyor belt to fit well against the surface of the fabric roll.

[0044] like Figure 1 As shown, the winding mechanism is similar in structure to the unwinding mechanism. In the winding mechanism, the winding arm 8 and the winding shaft 7 are arranged vertically. The winding shaft and the winding pivot 30 are rotatably positioned on the frame. The winding arm is positioned on the winding pivot via bearings, allowing it to swing up and down. The winding cylinder 9 connects the frame and the winding arm (the housing of the winding cylinder is rotatably hinged to the frame, and the piston rod of the winding cylinder is rotatably hinged to the winding arm). Several winding rollers are rotatably positioned on the winding arm, and the winding conveyor belt 35 wraps around these winding rollers. The winding shaft is an air-expansion shaft. The width of the winding conveyor belt is greater than the width of the fabric roll to ensure that the winding conveyor belt can cover the width of the fabric roll and guarantee the winding quality.

[0045] like Figure 5 As shown, the take-up arm is an upwardly arched bow shape. The take-up rollers include a first take-up roller 31, a second take-up roller 32, and a third take-up roller 33 arranged in a triangle. The first take-up roller is coaxially connected to the take-up shaft. The first and third take-up rollers are rotatably positioned at both ends of the take-up arm, and the second take-up roller is rotatably positioned at the arched portion in the middle of the take-up arm. The take-up conveyor belt wraps around the first, second, and third take-up rollers. The unwinding conveyor belt between the first and third unwinding rollers is used to drive the fabric roll mounted on the take-up shaft to rotate, such as... Figure 2 As shown, the winding conveyor belt is in close contact with the surface of the fabric roll.

[0046] Since both the unwinding and rewinding mechanisms use conveyor belts to drive the fabric rolls to rotate, the linear speed of the nonwoven fabric during movement can be kept consistent.

[0047] Tests revealed that relying solely on the winding conveyor belt could not apply uniform pressure to the surface of the fabric roll, resulting in an uneven surface on the winding shaft. Figure 16 (Since the middle of the fabric roll is concave), a flattening roller 34 is installed between the first and third take-up rollers. The flattening roller is rotatably positioned on an adjusting frame 36, which is then fixed to the take-up arm. During the take-up process, the flattening roller presses the take-up conveyor belt against the surface of the fabric roll to achieve uniform force and keep the fabric roll cylindrical.

[0048] The adjusting frame is equipped with a height adjustment groove 36-1, and the winding arm is equipped with a horizontal adjustment groove 8-1. Fasteners are installed in the horizontal and height adjustment grooves to fix the adjusting frame and the winding arm. By adjusting the positions of the horizontal and height adjustment grooves, it can be ensured that the flattening roller always presses down on the fabric roll during the winding process.

[0049] The humidification mechanism includes a humidification box 10, a lower humidification roller 11, and an upper humidification roller 12. For example... Figure 7 As shown, the humidifying box contains humidifying liquid 10.1, which can be pure water, fragrance liquid, wax liquid, or other liquids. The upper and lower humidifying rollers are arranged parallel to each other and rotatably positioned in the frame. The lower humidifying roller is partially immersed in the humidifying liquid, and the upper and lower humidifying rollers maintain a certain vertical distance, preferably 20-30 mils.

[0050] The upper and lower humidifying rollers rotate in opposite directions. The rotating lower humidifying roller carries the humidifying liquid. Since the gap between the upper and lower humidifying rollers is small, the humidifying liquid on the surface of the lower humidifying roller is evenly transferred and adsorbed onto the surface of the upper humidifying roller. When the nonwoven fabric passes through, it adsorbs the humidifying liquid on the surface of the upper humidifying roller, thereby enabling the nonwoven fabric to achieve uniform moisture regain.

[0051] The lower humidifying roller is made of rubber. The rubber material on the surface of the lower humidifying roller has tiny protrusions and depressions, which can effectively increase the surface area and thus carry the humidifying liquid in the humidifying box.

[0052] The upper humidifying roller is connected to the frame at both ends via a lifting structure. This lifting structure is used to change the distance between the upper and lower humidifying rollers to accommodate different types of humidifying liquids. When the distance increases, more humidifying liquid is transferred to the upper humidifying roller, thereby increasing the water absorption of the nonwoven fabric and improving the humidification effect. When the distance decreases, less humidifying liquid is transferred to the upper humidifying roller, thereby reducing the water absorption of the nonwoven fabric and decreasing the humidification effect.

[0053] In the lifting structure, the bearing seat 81 is fixed to the frame, and the lifting block 82 is vertically slidably positioned in the groove 81.1 on the side of the bearing seat. A guide rail 82.1 and a sliding groove 81.2 are provided between the lifting block and the bearing seat. A rotatable inner ring 83 is provided in the inner hole of the lifting block, and a ball bearing and a retainer are provided between the inner hole and the inner ring. The shaft of the upper humidifying roller is fixed to the inner ring, and the shaft also horizontally passes through the bearing seat and the frame. A support seat 84, fixed to the frame, is provided above the bearing seat. A vertically arranged screw 85 passes through the support seat, and its bottom end is fixed to the top surface of the lifting block. An adjusting nut 86, meshing with the screw, is provided above the support seat. A spring 87 is sleeved on the screw and located between the support seat and the lifting block. The height of the lifting block can be adjusted by rotating the adjusting nut, thus changing the distance between the upper and lower humidifying rollers.

[0054] The humidification mechanism is also equipped with an adjusting roller 13, which is located to the left of the upper humidification roller (between the upper humidification roller and the second guide roller). Figure 14 As shown, when the humidifying liquid is pure water or fragrance, the nonwoven fabric is first rotated counterclockwise around the upper humidifying roller, and then clockwise around the adjusting roller. At this point, the nonwoven fabric can adhere to at least 1 / 3 of the surface of the upper humidifying roller, allowing as much of the humidifying liquid as possible to be transferred to the nonwoven fabric. Figure 15 As shown, when the humidifying liquid is wax liquid, due to the viscosity of the wax liquid, the non-woven fabric is easily rolled between the upper and lower humidifying rollers. Therefore, the non-woven fabric first passes counterclockwise around the upper humidifying roller, and then passes counterclockwise around the adjusting roller.

[0055] The humidifier box may also be equipped with a liquid level sensor, a liquid pump, and a liquid tank to maintain the liquid level in the humidifier box. A top cover may also be provided on the upper part of the humidifier box, with only an inlet and outlet for the non-woven fabric.

[0056] The web-correcting mechanism is an integrated web-correcting machine. It is equipped with two guide rollers. The web-correcting mechanism is used to adjust the direction of the nonwoven fabric, ensuring the end face of the fabric roll in the winding mechanism is flat.

[0057] The frame is also equipped with a first guide roller 41, a second guide roller 42, and a third guide roller 43 that are rotatably positioned. Figure 1 and Figure 2 As shown, the first guide roller is positioned between the unwinding shaft and the humidifying mechanism, the second guide roller is positioned between the humidifying mechanism and the web-aligning mechanism, and the third guide roller is positioned between the take-up shaft and the web-aligning mechanism. The first and second guide rollers are positioned below the humidifying mechanism, and the second and third guide rollers are positioned below the web-aligning mechanism, to increase the contact area between the nonwoven fabric and the humidifying and web-aligning mechanisms. The nonwoven fabric released from the unwinding roll mounted on the unwinding shaft sequentially passes over the first guide roller, the upper humidifying roller, the adjusting roller, the second guide roller, the two guide rollers of the web-aligning mechanism, and the third guide roller before winding back onto the core mounted on the take-up shaft.

[0058] The motor drives the unwinding roller, the take-up roller, the upper humidifying roller, and the lower humidifying roller through a transmission mechanism. In the transmission mechanism, the motor shaft is connected to the drive shaft 44 via a first sprocket set; the drive shaft is connected to the first guide roller via a second sprocket set; the first guide roller is connected to the unwinding speed regulating wheel 26 via a first pulley set; the unwinding speed regulating wheel is connected to the unwinding shaft; the motor shaft is connected to the third guide roller via a third sprocket set; the third guide roller is connected to the take-up speed regulating wheel 27 via a second pulley set; the take-up speed regulating wheel is connected to the take-up shaft; the drive shaft is connected to the lower humidifying roller via a fourth sprocket set; and the lower humidifying roller is connected to the upper humidifying roller via a gear set.

[0059] like Figure 9As shown: The first sprocket assembly includes a first driving sprocket 4.1.1 fixed to the motor shaft, a first driven sprocket 4.1.2 fixed to the drive shaft, and a first chain 4.1.3 connecting the first driving sprocket and the first driven sprocket. The second sprocket assembly includes a second driving sprocket 4.2.1 fixed to the drive shaft, a second driven sprocket 4.2.2 fixed to the first guide roller, and a second chain 4.2.3 connecting the second driving sprocket and the second driven sprocket. The third sprocket assembly includes a third driving sprocket 4.3.1 fixed to the motor shaft, a third driven sprocket 4.3.2 fixed to the third guide roller, and a third chain 4.3.3 connecting the third driving sprocket and the third driven sprocket. The fourth sprocket assembly includes a fourth driving sprocket 4.4.1 fixed to the drive shaft, a fourth driven sprocket 4.4.2 fixed to the lower humidifying roller, and a fourth chain 4.4.3 connecting the fourth driving sprocket and the fourth driven sprocket. The first pulley assembly includes a first pulley 4.5.1 fixed to the first guide roller and a first transmission belt 4.5.2 connecting the first pulley to the unwinding speed regulating wheel (input wheel). The output wheel of the unwinding speed regulating wheel is connected to the unwinding shaft. The second pulley assembly includes a second pulley 4.6.1 fixed to the third guide roller and a second transmission belt 4.6.2 connecting the second pulley to the take-up speed regulating wheel (input wheel). The output wheel of the take-up speed regulating wheel is connected to the take-up shaft. The gear assembly includes a first gear 4.7.1 fixed to the lower humidifying roller and a second gear 4.7.2 fixed to the upper humidifying roller and meshing with the first gear. Since the lifting range of the upper humidifying roller is only 10 mils, minute distance changes do not affect the meshing and power transmission of the gear assembly.

[0060] It also includes the control air circuits for controlling the unwinding cylinder and the winding cylinder. For example... Figure 10 As shown, the air source 50 is connected to the inlet of the first pressure regulating valve 51 through the first air passage 71, and the air source is connected to the inlet of the second pressure regulating valve 52 through the second air passage 72. The outlet of the first pressure regulating valve is connected to both the inlet of the first reversing valve 61 and the inlet of the second reversing valve 62 through the third air passage 73. The outlet of the first reversing valve is connected to the retraction port of the unwinding cylinder through the fourth air passage 74. The outlet of the second reversing valve is connected to the retraction port of the winding cylinder through the fifth air passage 75. The outlet of the second pressure regulating valve is connected to the inlet of the third reversing valve 63 through the sixth air passage 76. One of the outlets of the third reversing valve is connected to the fifth air passage through the seventh air passage 77, and the other outlet of the third reversing valve is connected to the extension port of the unwinding cylinder through the eighth air passage 78.

[0061] The first pressure regulating valve generates high pressure to retract the piston rods of the unwinding and take-up cylinders, thereby raising the unwinding and take-up arms. The second pressure regulating valve generates low pressure to actively extend the piston rod of the take-up cylinder, maintaining sufficient downward pressure on the fabric roll of the take-up mechanism. After testing, the high pressure was set to 6 kg and the low pressure to 1 kg. The first and second directional valves control the raising and lowering of the unwinding and take-up arms. The third directional valve controls the tension during take-up.

[0062] The operating steps for controlling the gas path are as follows: 1. Press the switch of the first reversing valve and the switch of the second reversing valve, the fourth air passage and the fifth air passage are ventilated (6 kg), the piston rods of the unwinding cylinder and the winding cylinder retract, and the unwinding arm and the winding arm are raised upward. 2. Raise the switch of the first reversing valve, close the fourth air circuit, and the unwinding arm descends due to its own weight, causing the piston rod of the unwinding cylinder to extend naturally. 3. Raise the switch of the second reversing valve and simultaneously raise the switch of the third reversing valve. The fifth air circuit is closed and the eighth air circuit is vented (1 kg). The piston rod of the winding cylinder extends actively, increasing the downward pressure of the winding arm on the fabric roll, so that the fabric roll maintains sufficient winding tension. At this time, the unwound fabric roll and the wound fabric roll have the same outer diameter, which can ensure the smooth progress of subsequent production. 4. Raise the switch of the second reversing valve and press the switch of the third reversing valve. The eighth air circuit is closed and the fifth air circuit is open (1 kg). The winding arm descends due to its own weight (the fifth air circuit can offset part of the weight of the winding arm). The piston rod of the winding cylinder extends naturally. At this time, the winding tension of the fabric roll is small, and the outer diameter of the winding fabric roll is larger than the outer diameter of the unwinding fabric roll.

[0063] The present invention may also include a controller, which is electrically connected to the motor, the correction mechanism and the control air circuit.

[0064] The working principle of this invention is: 1. Initial state: Operate the control air circuit, and raise the unwinding arm and the winding arm upwards; 2. Preparation: Install the fabric roll 90 onto the unwinding shaft, install the empty core onto the take-up shaft, pull out the nonwoven fabric from the fabric roll, and pass it in sequence around the first guide roller, the upper humidifying roller, the adjusting roller, the second guide roller, the correction mechanism, and the third guide roller before fixing it to the core. 3. Start working: Operate the control air circuit, lower the unwinding arm and the winding arm, and keep the winding arm under the correct downward pressure; start the motor and the correction mechanism, and the unwinding conveyor belt and the winding conveyor belt will start to rotate. Since the unwinding conveyor belt and the winding conveyor belt rotate at the same speed, the nonwoven fabric moves at a uniform speed to re-moisten. 4. End: Turn off the motor and the correction mechanism, operate the control air circuit, lift the unwinding arm and the rewinding arm, remove the empty core from the unwinding shaft, and remove the re-moistened cloth roll from the rewinding shaft. 5. Let the fabric roll stand for a period of time (1-2 nights) to allow the nonwoven fabric to regain moisture more evenly before transporting it to the next process.

[0065] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. A nonwoven fabric rewinding and rewinding machine, characterized in that: It includes a frame (1), a motor, an unwinding mechanism and a winding mechanism located on both sides of the frame, and a humidifying mechanism (2) and a web-correcting mechanism (3) located between the unwinding mechanism and the winding mechanism.

2. The nonwoven fabric rewinding and rewinding machine according to claim 1, characterized in that: The unwinding mechanism includes an unwinding shaft (4) rotatably positioned on the right side of the frame, an unwinding arm (5) swayably positioned above the unwinding shaft, an unwinding cylinder (6) connecting the frame and the unwinding arm, a plurality of unwinding rollers rotatably positioned on the unwinding arm, and an unwinding conveyor belt (25) surrounding the unwinding rollers. The winding mechanism includes a winding shaft (7) rotatably positioned on the left side of the frame, a winding arm (8) swayably positioned above the winding shaft, a winding cylinder (9) connecting the frame and the winding arm, several winding rollers rotatably positioned on the winding arm, and a winding conveyor belt (35) surrounding the winding rollers.

3. The nonwoven fabric rewinding and rewinding machine according to claim 2, characterized in that: The humidification mechanism includes a humidification box (10), a lower humidification roller (11) rotatably positioned in the humidification box, and an upper humidification roller (12) rotatably positioned above the lower humidification roller.

4. The nonwoven fabric liquid-adding re-moistening rewinding machine according to claim 3, characterized in that: The unwinding arm is rotatably positioned on the frame via the unwinding shaft (20); in the unwinding mechanism, the first unwinding roller (21) is coaxially connected to the unwinding shaft, the second unwinding roller (22) and the third unwinding roller (23) are rotatably positioned on the unwinding arm, and the unwinding conveyor belt (25) is wrapped around the first unwinding roller, the second unwinding roller and the third unwinding roller.

5. The nonwoven fabric rewinding and rewinding machine according to claim 4, characterized in that: The take-up arm is rotatably positioned on the frame via a take-up shaft (30); in the take-up mechanism, the first take-up roller (31) is coaxially connected to the take-up shaft, the second take-up roller (32) and the third take-up roller (33) are rotatably positioned on the take-up arm, the flattening roller (34) is rotatably positioned on the adjusting frame (36) connected to the take-up arm, and the take-up conveyor belt is wrapped around the first take-up roller, the second take-up roller, the third take-up roller and the flattening roller.

6. The nonwoven fabric liquid-adding rewinding machine according to claim 5, characterized in that: The width of the winding conveyor belt is greater than the width of the fabric roll; the motor transmits power to the unwinding mechanism, the winding mechanism, and the humidifying mechanism through the transmission mechanism; the frame is also provided with a first guide roller (41), a second guide roller (42), and a third guide roller (43); the fabric roll released from the unwinding shaft passes in sequence around the first guide roller, the upper humidifying roller, the second guide roller, the two guide rollers of the correction mechanism, and the third guide roller before winding back to the core installed on the winding shaft.

7. The nonwoven fabric rewinding and rewinding machine according to claim 6, characterized in that: The humidification box contains humidifying liquid, and the lower humidifying roller is partially immersed in the humidifying liquid. The lower humidifying roller is a rubber roller, and the vertical distance between the upper and lower humidifying rollers is 20-30 mils.

8. The nonwoven fabric rewinding and rewinding machine according to claim 7, characterized in that: It also includes a control air circuit connecting the unwinding cylinder and the winding cylinder; in the control air circuit, the air source (50) is connected to the retraction port of the unwinding cylinder through the first pressure regulating valve (51) and the first reversing valve (61) in sequence, the air source is connected to the retraction port of the winding cylinder through the first pressure regulating valve and the second reversing valve (62) in sequence, and the air source is connected to the retraction port and the extension port of the unwinding cylinder through the second pressure regulating valve (52) and the third reversing valve (63) in sequence.

9. The nonwoven fabric liquid-adding rewinding machine according to claim 8, characterized in that: In the transmission mechanism, the motor (40) shaft is connected to the transmission shaft through the first sprocket set, the transmission shaft is connected to the first guide roller through the second sprocket set, the first guide roller is connected to the unwinding speed regulating wheel (26) through the first pulley set, the unwinding speed regulating wheel is connected to the unwinding shaft, the motor shaft is connected to the third guide roller through the third sprocket set, the third guide roller is connected to the winding speed regulating wheel (27) through the second pulley set, the winding speed regulating wheel is connected to the winding shaft, the transmission shaft is connected to the lower humidifying roller through the fourth sprocket set, and the lower humidifying roller is connected to the upper humidifying roller through the gear set.

10. The nonwoven fabric liquid-adding rewinding machine according to claim 9, characterized in that: The unwinding shaft and the winding shaft are air-expanding shafts; the correction mechanism is an integrated correction machine.

Images