A press device for a multi-layer nonwoven fabric

Abstract

The present application belongs to the technical field of non-woven fabric pressing, and relates to a multi-layer non-woven fabric pressing device, which comprises a base, a pay-off group and a winding group respectively located at two ends of the base, a support one and a support two arranged at the middle part of the base, a hot melt pressing roller and a hot melt pressing cylinder respectively rotatably arranged on the support one and the support two, and a hot melt pressing part slidingly penetrating through the cylinder wall of the hot melt pressing cylinder and adapted to contact and cooperate with the hot melt pressing roller. The hot melt pressing part close to the hot melt pressing roller is extruded by a cam to abut against the hot melt pressing roller, so that greater local pressing force is applied to the non-woven fabric on the hot melt pressing roller during conveying of the non-woven fabric, and the pressing effect is ensured. With rotation of the hot melt pressing cylinder, the hot melt pressing part is away from the hot melt pressing roller and is collected on the hot melt pressing cylinder under the action of spring return, so that frictional damage to the non-woven fabric is avoided before and after pressing.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of non-woven fabric pressing, and particularly relates to a multi-layer non-woven fabric pressing device. BACKGROUND

[0002] Non-woven fabric is also called non-woven cloth. In the production process of non-woven fabric, in order to improve the strength, thickness or functionality of the material, it is often necessary to press multiple layers of non-woven fabric together. The pressing methods mainly involve heat pressing, ultrasonic welding, gluing and the like.

[0003] For example, the patent with the patent number CN220841786U discloses a multi-layer non-woven fabric pressing device. When in use, the threaded sleeve moves along the direction of the chute, and at the same time, the upper pressing roller moves downward together with the threaded sleeve to cooperate with the lower pressing roller to press the non-woven fabric. Then, the first motor is started to drive the lower pressing roller to rotate, and under the action of friction, the non-woven fabric is conveyed and pressed at the same time. However, the pressing device only uses the pressing method of two pressing rollers cooperating with each other to press, and it is unable to actively exert greater local pressing force for the pressing of thicker or multi-layer materials.

[0004] In view of the above-mentioned shortcomings of the prior art, a multi-layer non-woven fabric pressing device capable of actively exerting greater local pressing force during conveying and having good pressing effect is hereby designed. SUMMARY

[0005] The purpose of the present application is to overcome the above-mentioned shortcomings of the prior art, and to provide a multi-layer non-woven fabric pressing device capable of actively exerting greater local pressing force during conveying and having good pressing effect.

[0006] In order to solve the above-mentioned technical problems, the present application provides a multi-layer non-woven fabric pressing device, which comprises a base, a pay-off group and a winding group respectively located at the left and right ends of the base, the pay-off group has two pay-off groups in common and the heights of the two pay-off groups are different, a support one is arranged at the middle part of the base, a support two is arranged above the support one, a hot melt pressing roller and a hot melt pressing cylinder are respectively rotatably arranged on the support one and the support two, a hot melt pressing piece adapted to contact and cooperate with the hot melt pressing roller is slidably arranged through the wall of the hot melt pressing cylinder, a spring for collecting and resetting the hot melt pressing piece extending out of the hot melt pressing cylinder is connected between the hot melt pressing piece and the hot melt pressing cylinder, a cam located in the hot melt pressing cylinder is connected to the support two, the protruding part of the cam faces the hot melt pressing roller, the cam is adapted to extrude the hot melt pressing piece to extend out of the hot melt pressing cylinder to approach the hot melt pressing roller and press the non-woven fabric on the hot melt pressing roller, the hot melt pressing roller is driven to rotate by an external motor, a gear ring surrounding the support two is connected to the hot melt pressing cylinder, and an electric gear one meshing with the gear ring is installed on the support two.

[0007] Preferably, the hot melt pressing component consists of a pressure head located on the outer ring side of the hot melt pressing cylinder and a guide rod that slides to the inner ring side of the hot melt pressing cylinder. The pressure head is used to cooperate with the hot melt pressing roller to press the nonwoven fabric. A spring is connected between the pressure head and the hot melt pressing cylinder. The guide rod is adapted to contact and cooperate with the cam. The end of the guide rod that contacts the cam has a rounded corner.

[0008] Preferably, the cam further comprises an annular portion connected to the second bracket and a protrusion slidably disposed on the lower side of the annular portion, the protrusion being adapted to press the guide rod close to the hot melt pressing roller, and a screw threadedly connected to the second bracket being rotatably disposed on the upper side of the protrusion.

[0009] Preferably, the unwinding assembly includes two front-to-back opposing bearing seats connected to the upper left side of the base. An unwinding roller for supporting the nonwoven fabric to be pressed is placed between the upper parts of the two bearing seats. Both the front and rear ends of the unwinding roller are provided with bearing assemblies for placing on the bearing seats. One end of the unwinding roller is connected to a spur gear. An electric gear that meshes with the gear is installed on the base.

[0010] Preferably, it further includes a first guide roller rotatably mounted on the base and a second guide roller located above the first guide roller. The first guide roller is used to polymerize two nonwoven fabrics, the center of the second guide roller is located between two unwinding rollers, and the highest point of the second guide roller is lower than the highest point of the hot melt pressing roller.

[0011] Preferably, the winding assembly includes two front-to-back opposing bearing seats connected to the upper right side of the base. A winding roller for supporting the pressed nonwoven fabric is placed between the upper parts of the two bearing seats. Both ends of the winding roller are provided with bearing assemblies for placing on the bearing seats. One end of the winding roller is connected to a spur gear. A transmission gear meshing with the spur gear is rotatably mounted on the base. A motor is mounted on the base. The output shaft of the motor is driven by a synchronous belt pulley assembly.

[0012] Preferably, the system further includes two vertically opposing guide rollers rotatably mounted on the base. The guide rollers are located between the unwinding roller and the first guide roller. The guide rollers have two symmetrical spiral grooves. A vertical shaft rotates on the base and is driven by two sets of bevel gears, each consisting of two meshing bevel gears. A horizontal shaft rotates on the base and is driven by a set of bevel gears, one at each end, to the vertical shaft and the other to the output shaft of the first motor. The second set of bevel gears is the same as the first set of bevel gears and consists of two meshing bevel gears.

[0013] Preferably, it also includes two left-right opposing guide shafts connected to the base. A second motor is installed on the base. The output shaft of the second motor is connected to a bidirectional lead screw. Both ends of the bidirectional lead screw are threadedly connected to a limiting frame that is slidably mounted on the guide shaft. The upper side of the limiting frame has three U-shaped grooves for the take-up roller and the two unwinding rollers to pass through.

[0014] The beneficial effects that this invention can achieve by overcoming the shortcomings of the prior art include:

[0015] The hot melt pressing component, rotated close to the hot melt pressing roller, is pressed against the hot melt pressing roller by the cam. This actively applies a greater local pressing force to the nonwoven fabric on the hot melt pressing roller during the nonwoven fabric conveying process, ensuring the pressing effect. As the hot melt pressing cylinder rotates, the hot melt pressing component will move away from the hot melt pressing roller under the action of the spring return and retract onto the hot melt pressing cylinder, thereby avoiding friction damage to the nonwoven fabric before and after pressing. Attached Figure Description

[0016] Figure 1 This is an assembly diagram of the present invention.

[0017] Figure 2 This is the front view of the present invention.

[0018] Figure 3 This is a schematic diagram of the hot melt pressing cylinder, gear ring, and electric gear of the present invention.

[0019] Figure 4 This is a schematic diagram of the hot melt pressing roller, hot melt pressing cylinder, and hot melt pressing component of the present invention.

[0020] Figure 5 For the present invention Figure 4 Enlarged view of point A.

[0021] Figure 6 This is a schematic diagram of the annular portion, protrusion, and screw of the present invention.

[0022] Figure 7 This is a schematic diagram of the unwinding roller, bearing assembly 1, and spur gear 1 of the present invention.

[0023] Figure 8 This is a schematic diagram of the winding roller, bearing assembly two, and spur gear two of the present invention.

[0024] Figure 9 This is a schematic diagram of the guide roller, vertical shaft, and bevel gear assembly of the present invention.

[0025] Figure 10 This is a schematic diagram of the motor, bidirectional lead screw, and limit frame of the present invention.

[0026] The reference numerals in the accompanying drawings provided by this invention are as follows: 1-base, 21-support one, 22-hot melt pressing roller, 23-support two, 24-hot melt pressing cylinder, 25-hot melt pressing component, 251-pressing head, 252-guide rod, 26-spring, 27-cam, 271-annular part, 272-protrusion, 273-screw, 28-gear ring, 29-electric gear one, 30-bearing seat one, 31-unwinding roller, 32-bearing assembly one, 33-base two. - Spur gear 1, 34 Electric gear 2, 35 Guide roller 1, 36 Guide roller 2, 40 Bearing housing 2, 41 Take-up roller, 42 Bearing assembly 2, 43 Spur gear 2, 44 Transmission gear, 45 Motor 1, 46 Synchronous belt pulley assembly, 51 Guide roller, 52 Vertical shaft, 53 Bevel gear assembly 1, 54 Horizontal shaft, 55 Bevel gear assembly 2, 61 Guide shaft, 62 Motor 2, 63 Bidirectional lead screw, 64 Limiting frame. Detailed Implementation

[0027] In the description of this invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0028] Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The technical solutions of the present invention will now be clearly and completely described in conjunction with the accompanying drawings. It should be understood that the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0029] A pressing device for multilayer nonwoven fabrics, such as Figures 1-4As shown, the system includes a base 1, and unwinding and rewinding groups located at the left and right ends of the base 1, respectively. There are two unwinding groups with different heights. A support 1 21 and a support 23 located above the support 1 21 are provided in the middle of the base 1. A hot-melt pressing roller 22 and a hot-melt pressing cylinder 24 rotate on the support 1 21 and the support 23, respectively. Two nonwoven fabrics unwound by the unwinding group pass together between the hot-melt pressing roller 22 and the hot-melt pressing cylinder 24 for pressing. The rewinding group then rewinds the pressed multi-layer nonwoven fabric. A ring of material suitable for sliding through the wall of the hot-melt pressing cylinder 24 is provided. The hot melt pressing roller 22 engages with the hot melt pressing component 25 to press the two nonwoven fabrics passing between the hot melt pressing roller 22 and the hot melt pressing cylinder 24. A spring 26 is connected between the hot melt pressing component 25 and the hot melt pressing cylinder 24 for retracting and resetting the hot melt pressing component 25 extending from the hot melt pressing cylinder 24. The bracket 23 is connected to a cam 27 located inside the hot melt pressing cylinder 24. The protrusion 272 of the cam 27 faces the hot melt pressing roller 22. The cam 27 is adapted to press the hot melt pressing component 25 to extend from the hot melt pressing cylinder 24 to approach the hot melt pressing roller 22 and to press the hot melt pressing roller 22. When the nonwoven fabric is pressed, as the hot melt pressing roller 22 rotates clockwise to convey the nonwoven fabric, the hot melt pressing cylinder 24 drives the hot melt pressing component 25 to rotate counterclockwise. Since the support 23 and cam 27 are stationary, the hot melt pressing component 25, which rotates closer to the hot melt pressing roller 22, is pressed against the hot melt pressing roller 22 by the cam 27, and the spring 26 is stretched. This actively applies a larger local pressing force to the nonwoven fabric on the hot melt pressing roller 22 during the conveying process, ensuring the pressing effect. As the hot melt pressing cylinder 24 rotates, the hot melt pressing component pressed by the cam 27 will gradually move away from the cam 27, the spring 26 will return to its original position, and the hot melt pressing component will... Under the reset action of spring 26, the roller moves away from the hot melt pressing roller 22 and retracts onto the hot melt pressing cylinder 24, thereby avoiding friction damage to the nonwoven fabric before pressing. The hot melt pressing roller 22 is driven to rotate by an external motor. A toothed ring 28 surrounding the bracket 23 is connected to the hot melt pressing cylinder 24. An electric gear 29 that meshes with the toothed ring 28 is installed on the bracket 23. The meshing of the electric gear 29 with the toothed ring 28 drives the hot melt pressing cylinder 24 to rotate. The electric gear 29 consists of a motor and a drive gear (those skilled in the art can easily understand and implement this technical solution after reviewing the present invention, so it will not be described in detail).

[0030] like Figure 5As shown, the hot melt pressing component 25 consists of a pressing head 251 located on the outer ring side of the hot melt pressing cylinder 24 and a guide rod 252 that slides to the inner ring side of the hot melt pressing cylinder 24. The pressing head 251 is used to cooperate with the hot melt pressing roller 22 to press the nonwoven fabric. A spring 26 is connected between the pressing head 251 and the hot melt pressing cylinder 24. The guide rod 252 is adapted to contact and cooperate with the cam 27. The end of the guide rod 252 that contacts the cam 27 has a rounded corner.

[0031] like Figure 6 As shown, the cam 27 also includes an annular portion 271 connected to the second bracket 23 and a protrusion 272 slidably disposed on the lower side of the annular portion 271. The protrusion 272 is adapted to press the guide rod 252 close to the hot melt pressing roller 22. A screw 273 threadedly connected to the second bracket 23 is rotatably mounted on the upper side of the protrusion 272. Rotating the screw 273 drives the protrusion 272 to move up and down along the annular portion 271, thereby adjusting the distance between the protrusion 272 and the hot melt pressing roller 22. This allows the position of the protrusion 272 pressing the guide rod 252 to be actively adjusted according to the pressing force required for pressing the nonwoven fabric, thereby adjusting the pressing force of the pressure head 251. This prevents excessive compression of the nonwoven fabric and avoids insufficient pressing force.

[0032] like Figure 1 and Figure 7 As shown, the unwinding assembly includes two front-to-back opposing bearing seats 30 connected to the upper left side of the base 1. An unwinding roller 31 for supporting the nonwoven fabric to be pressed is placed between the upper parts of the two bearing seats 30. Two unwinding rollers 31 in the two unwinding assemblies support two nonwoven fabric rolls respectively. Both ends of the unwinding roller 31 are provided with bearing assemblies 32 for placing on the bearing seats 30. One end of the unwinding roller 31 is connected to a spur gear 33. An electric gear 34 that meshes with the gear 34 is installed on the base 1. The meshing of the electric gear 34 with the spur gear 33 drives the unwinding roller 31 to rotate and unwind the nonwoven fabric. If the unwinding roller 31 is removed, the spur gear 33 disengages from the electric gear 34, and the bearing assembly 32 disengages from the bearing seat 30.

[0033] like Figure 2As shown, it also includes a guide roller 35 rotatably mounted on the base 1 and a guide roller 36 located above the guide roller 35. The guide roller 35 is used to bond two nonwoven fabrics. The center of the guide roller 36 is located between two unwinding rollers 31. The nonwoven fabric roll on the upper unwinding roller 31 is unwound from the top and passes over the lower side of the guide roller 35, while the nonwoven fabric roll on the lower unwinding roller 31 is unwound from the bottom and passes over the lower side of the upper nonwoven fabric roll on the guide roller 35, maintaining the two nonwoven fabrics... Before pressing, the side of the woven fabric that is close to each other is not contaminated by the guide roller 35. The highest point of the guide roller 36 is lower than the highest point of the hot melt pressing roller 22. The two nonwoven fabrics that are brought together by the guide roller 35 will bypass the upper left side of the guide roller 36 and pass between the hot melt pressing roller 22 and the hot melt pressing cylinder 24, thereby straightening the nonwoven fabric. The guide roller 36 will restrict the position of the nonwoven fabric to be lower, thereby reducing unnecessary friction between the hot melt pressing component 25 and the nonwoven fabric before pressing.

[0034] like Figure 1 and Figure 8 As shown, the winding assembly includes two opposing bearing seats 40 connected to the upper right side of the base 1. A winding roller 41 for supporting the pressed nonwoven fabric is placed between the upper parts of the two bearing seats 40. The pressed nonwoven fabric is wound up from the underside of the winding roller 41. Both ends of the winding roller 41 are provided with bearing assemblies 42 for placing on the bearing seats 40. One end of the winding roller 41 is connected to a spur gear 43. The base 1 has a rotating meshing gear. The transmission gear 44 of the second spur gear 43 is connected to the transmission gear 44. A motor 45 is installed on the base 1. The output shaft of the first motor 45 is connected to the transmission gear 44 through a synchronous belt pulley group 46. The control motor 45 drives the transmission gear 44 to rotate and mesh with the second spur gear 43 under the transmission of the synchronous belt pulley. The second spur gear 43 will drive the take-up roller 41 to rotate and take up the nonwoven fabric. If the unwind roller 31 is removed, the second spur gear 43 will disengage from the transmission gear 44, and the bearing group 42 will disengage from the bearing seat 40.

[0035] like Figure 2 and Figure 9As shown, it also includes two vertically opposed guide rollers 51 rotatably mounted on the base 1. The guide rollers 51 are located between the unwinding roller 31 and the guide roller 35. The upper side of the nonwoven fabric on the upper unwinding roller 31 first passes over the lower side of the upper guide roller 51 and then over the lower side of the guide roller 35. The lower side of the nonwoven fabric on the lower unwinding roller 31 first passes over the upper side of the lower guide roller 51 and then over the lower side of the upper nonwoven fabric on the guide roller 35. The guide rollers 51 have two symmetrical spiral grooves, which allow the guide rollers 51 to rotate during the conveying of the nonwoven fabric. The friction from the two symmetrical spiral grooves straightens the nonwoven fabric in the front-to-back direction. The base 1 has a rotatable vertical... The vertical shaft 52 is driven by two bevel gear sets 53, which are respectively connected to the two guide rollers 51. The bevel gear set 53 consists of two meshing bevel gears. Therefore, the rotation of the vertical shaft 52 will drive the two guide rollers 51 to rotate simultaneously through the bevel gear set 53. A horizontal shaft 54 ​​rotates on the base 1. The two ends of the horizontal shaft 54 ​​are connected to the vertical shaft 52 and the output shaft of the motor 45 respectively through bevel gear set 55. The bevel gear set 55 is the same as the bevel gear set 53, both consisting of two meshing bevel gears. Therefore, when pressing the nonwoven fabric, the motor 45 drives the take-up roller 41 to rotate, and the vertical shaft 52 will also rotate synchronously through the bevel gear set 55 and the horizontal shaft 54.

[0036] like Figure 10 As shown, it also includes two left-right opposing guide shafts 61 connected to the base 1. A second motor 62 is installed on the base 1. The output shaft of the second motor 62 is connected to a bidirectional lead screw 63. Both ends of the bidirectional lead screw 63 are threadedly connected to limiting frames 64 that are slidably mounted on the guide shafts 61. The upper side of the limiting frame 64 has three U-shaped grooves for the take-up roller 41 and the two unwinding rollers 31 to pass through. The second motor 62 drives the bidirectional lead screw 63 to rotate, so that the bidirectional lead screw 63 drives the two limiting frames 64 to move closer or further apart. This adjusts the distance between the two limiting frames 64 according to the axial length of the nonwoven fabric roll. The front limiting frame 64 restricts the front of the nonwoven fabric on the take-up roller 41 and the two unwinding rollers 31, and the rear limiting frame 64 restricts the rear of the nonwoven fabric on the take-up roller 41 and the two unwinding rollers 31.

[0037] Obviously, the embodiments described above are only some embodiments of the present invention, and not all embodiments. They only express the preferred implementation of the present invention and are described in a relatively specific and detailed manner, but should not be construed as limiting the scope of the present invention.

[0038] It should be noted that, for those skilled in the art, various modifications, additions or subtractions, improvements and substitutions can be made without departing from the concept of the present invention. Therefore, 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.

Claims

1. A pressing device for multilayer nonwoven fabrics, characterized in that, It includes a base (1), an unwinding group and a winding group located at both ends of the base (1), the unwinding group has two groups with different heights, the base (1) has a support one (21) and a support two (23) in the middle, the support one (21) and the support two (23) are respectively mounted on the support one (21) and the support two (23) to rotate hot melt pressing roller (22) and hot melt pressing cylinder (24), the hot melt pressing cylinder (24) has a ring of hot melt pressing component (25) that is suitable for contacting and cooperating with the hot melt pressing roller (22) through the cylinder wall, the hot melt pressing component (25) and the hot melt pressing cylinder ( A spring (26) is connected between the two (24) supports. A cam (27) located inside the hot melt pressing cylinder (24) is connected to the second support (23). The protrusion (272) of the cam (27) faces the hot melt pressing roller (22). The cam (27) is adapted to press the hot melt pressing piece (25) close to the hot melt pressing roller (22). The hot melt pressing roller (22) is driven to rotate by an external motor. A toothed ring (28) is connected to the hot melt pressing cylinder (24). An electric gear (29) that meshes with the toothed ring (28) is installed on the second support (23). The unwinding assembly includes two bearing seats (30) connected to the base (1), and an unwinding roller (31) for supporting the nonwoven fabric is placed between the two bearing seats (30). Both ends of the unwinding roller (31) are provided with bearing assemblies (32) for placing on the bearing seats (30). One end of the unwinding roller (31) is connected to a spur gear (33), and an electric gear (34) that meshes with the gear is installed on the base (1). It also includes a guide roller 1 (35) rotatably mounted on the base (1) and a guide roller 2 (36) located above the guide roller 1 (35). The center of the guide roller 2 (36) is located between the two unwinding rollers (31), and the highest point of the guide roller 2 (36) is lower than the highest point of the hot melt pressing roller (22). The winding assembly includes two bearing seats (40) connected to the upper right side of the base (1). A winding roller (41) for supporting the nonwoven fabric is placed between the two bearing seats (40). Both ends of the winding roller (41) are provided with bearing sets (42) for placing on the bearing seats (40). One end of the winding roller (41) is connected to a spur gear (43). A transmission gear (44) meshing with the spur gear (43) is rotatably mounted on the base (1). A motor (45) is mounted on the base (1). The output shaft of the motor (45) is connected to the transmission gear (44) through a synchronous belt pulley set (46). It also includes two vertically opposite guide rollers (51) rotatably mounted on the base (1). The guide rollers (51) are located between the unwinding roller (31) and the first guide roller (35). The guide rollers (51) have two symmetrical spiral grooves. The base (1) has a rotatable vertical shaft (52). The vertical shaft (52) is driven by two bevel gear sets (53) to the two guide rollers (51) respectively. The base (1) has a rotatable horizontal shaft (54). The two ends of the horizontal shaft (54) are driven by the vertical shaft (52) and the output shaft of the first motor (45) respectively through a bevel gear set (55). The bevel gear set (55) is the same as the bevel gear set (53), both consisting of two meshing bevel gears.

2. The pressing device for multilayer nonwoven fabric according to claim 1, characterized in that, The hot melt pressing component (25) consists of a pressing head (251) located on the outer ring side of the hot melt pressing cylinder (24) and a guide rod (252) that slides to the inner ring side of the hot melt pressing cylinder (24). The pressing head (251) is used to cooperate with the hot melt pressing roller (22) to press the nonwoven fabric, and the guide rod (252) is adapted to contact and cooperate with the cam (27).

3. The pressing device for multilayer nonwoven fabric according to claim 2, characterized in that, It also includes the cam (27) which consists of an annular portion (271) connected to the bracket two (23) and a protrusion (272) slidably disposed on the annular portion (271). The protrusion (272) is adapted to press the guide rod (252). A screw (273) is rotatably connected to the bracket two (23) on the upper side of the protrusion (272).

4. The pressing device for multilayer nonwoven fabric according to claim 1, characterized in that, It also includes a guide shaft (61) connected to the base (1), a second motor (62) is installed on the base (1), the output shaft of the second motor (62) is connected to a bidirectional lead screw (63), both ends of the bidirectional lead screw (63) are threadedly connected to a limiting frame (64) slidably mounted on the guide shaft (61), and the upper side of the limiting frame (64) has three U-shaped grooves for the take-up roller (41) and the two unwinding rollers (31) to pass through respectively.

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