A roller embossing device for hot air nonwoven fabric

Abstract

The utility model discloses a kind of embossing device for hot air nonwoven fabric, including base, main embossing roller and from embossing roller, the left and right sides of the top of base are all installed with vertical board, the main embossing roller and from embossing roller are respectively arranged in the top of base.The utility model is through being arranged limit fixed component, completely solve the problem of traditional embossing device embossing roller disassembly cumbersome, the fixed shaft of embossing roller is accurately docked through the square clamping block of annular sleeve inner wall and the square clamping groove of fixed shaft, realize circumferential positioning;Annular plate moves along straight line under the restraint of guide rod, ensure that annular sleeve and fixed shaft coaxial docking, only need to rotate the threaded block on threaded rod, annular plate can be pushed by screw locking force, make annular sleeve and fixed shaft closely adhere, or loosen threaded block after pulling threaded rod separation two, entire disassembly process does not need to disassemble motor, shaft coupling or bearing seat, improve disassembly efficiency, it is convenient for user to replace the embossing roller of different pattern.

Description

Technical Field

[0001] This utility model relates to the field of calendering technology, specifically to a calendering device for hot air nonwoven fabric. Background Technology

[0002] Hot-air nonwoven fabric is formed by using hot air to penetrate a fiber web, causing the fibers in the web to melt and bond together. It is widely used in hygiene products, medical protective equipment, packaging, and other fields. In the production process of hot-air nonwoven fabric, embossing is one of the important steps. By using an embossing device to press specific patterns onto the surface of the nonwoven fabric, the appearance, feel, and structural stability of the nonwoven fabric can be improved.

[0003] According to application number CN202020251303.1, a nonwoven fabric calendering device is disclosed. Addressing the problem that existing calendering devices are inconvenient for adjusting elasticity, the following solution is proposed: It includes a base, a mounting frame fixedly installed on the top of the base, rotating shafts rotatably mounted on the inner walls of both sides of the mounting frame, a lower calendering roller fixedly sleeved on the rotating shafts, a drive motor fixedly mounted on one side of the mounting frame, and the output shaft of the drive motor fixedly mounted on the rotating shafts. The same U-shaped seat is slidably mounted on the inner walls of both sides of the mounting frame, and the same rotating rod is rotatably mounted on the inner walls of both sides of the U-shaped seat, an upper calendering roller fixedly sleeved on the rotating rod.

[0004] The calendering device for hot air nonwoven fabrics mentioned above is inconvenient to disassemble and replace the calendering rollers. The calendering rollers are mostly fixed installation structures. When changing calendering rollers with different patterns, a large number of parts need to be disassembled, which is cumbersome and time-consuming, seriously affecting production efficiency. Therefore, we provide a calendering device for hot air nonwoven fabrics. Utility Model Content

[0005] The purpose of this invention is to provide a calendering device for hot air nonwoven fabrics to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a calendering device for hot air nonwoven fabric, comprising a base, a main calendering roller, and a secondary calendering roller. Vertical plates are installed on both the left and right sides of the top of the base. The main calendering roller and the secondary calendering roller are respectively disposed above the base. Fixed shafts are installed on both the left and right sides of the main calendering roller and the secondary calendering roller. Limiting and fixing components are provided on both the left and right sides of the main calendering roller and the secondary calendering roller. The limiting and fixing components are used for disassembling and assembling the calendering roller. A drive adjustment component is provided on the vertical plate. The drive adjustment component is used to adjust the distance between the main calendering roller and the secondary calendering roller.

[0007] Preferably, the limiting and fixing assembly includes an annular shell, which is disposed above the base. A movable annular plate is disposed inside the annular shell. Two guide rods are installed on the inner wall of the annular shell. One end of the guide rod near the annular plate passes through the annular plate and extends to the outside of the annular plate where a stop block is installed.

[0008] Preferably, an annular sleeve adapted to the fixed shaft is installed on the side of the annular plate near the fixed shaft. The end of the fixed shaft near the annular sleeve passes through the annular sleeve and extends into it to contact the inner wall of the annular sleeve. A square locking block is installed on the inner wall of the annular sleeve, and a square locking groove is opened on the side of the fixed shaft near the square locking block.

[0009] Preferably, a threaded rod is installed on the annular plate, the end of the threaded rod away from the annular plate passes through the annular shell and extends to its outside, a threaded block is threadedly connected to the surface of the threaded rod, and a fixing washer is provided on the surface of the threaded rod at a position between the annular shell and the threaded block.

[0010] Preferably, the drive adjustment assembly includes a concave plate, which is installed on top of two vertical plates. Two electric push rods are installed on the top of the inner wall of the concave plate, and the bottom ends of the two electric push rods are fixedly connected by a movable concave block. Slide grooves are provided on both the left and right sides of the inner wall of the concave plate, and sliders that slide in contact with the inner wall of the slide grooves are installed on both the left and right sides of the movable concave block.

[0011] Preferably, a servo motor is installed on the left vertical plate. The right end of the output shaft of the servo motor passes through the left vertical plate and extends to its outside, where it is fixedly connected to the annular shell at the bottom of the left side. The annular shell at the bottom of the right side is rotatably connected to a bearing located in the groove of the right vertical plate via a rotating shaft.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model completely solves the problem of cumbersome disassembly and assembly of ginning rollers in traditional ginning devices by setting a limiting and fixing component. The fixed shaft of the ginning roller is precisely connected to the square groove of the fixed shaft through the square block on the inner wall of the annular sleeve, achieving circumferential positioning. The annular plate moves in a straight line under the constraint of the guide rod, ensuring that the annular sleeve and the fixed shaft are coaxially connected. Only by rotating the threaded block on the threaded rod, the annular plate can be pushed by the threaded locking force to make the annular sleeve and the fixed shaft fit tightly together, or the threaded block can be loosened and the threaded rod pulled to separate the two. The entire disassembly and assembly process does not require disassembly of the motor, coupling or bearing seat, which improves the disassembly and assembly efficiency and makes it convenient for users to replace ginning rollers with different patterns.

[0014] 2. The drive adjustment component of this utility model adopts a dual electric push rod synchronous drive. By moving the concave block, the top limiting and fixing component and the calendering roller move up and down. This structure can achieve calendering spacing accuracy adjustment at the 0.05mm level, and can adapt to hot air nonwoven fabrics of different specifications with thicknesses of 0.08mm-0.5mm. At the same time, the output force of the electric push rod is stable, which can avoid spacing deviation caused by external force fluctuations during the adjustment process, further ensuring the uniformity of calendering pressure. It also improves the friction between the main calendering roller, the calendering roller and the nonwoven fabric, and improves the stability of the calendering roller when it is driven by friction. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a three-dimensional structural cross-sectional view of the present invention;

[0017] Figure 3 This is a three-dimensional cross-sectional view of the main embossing roller and the limiting and fixing assembly of this utility model;

[0018] Figure 4 This is a three-dimensional structural cross-sectional view of the limiting and fixing component of this utility model;

[0019] Figure 5 This is a three-dimensional structural schematic diagram of the main embossing roller and the limiting and fixing assembly of this utility model from a bottom view.

[0020] In the diagram: 1. Base; 100. Main embossing roller; 101. Secondary embossing roller; 102. Vertical plate; 103. Fixed shaft; 3. Limiting and fixing assembly; 31. Annular shell; 32. Annular plate; 33. Guide rod; 34. Stop block; 35. Annular sleeve; 36. Square locking block; 37. Square locking groove; 38. Threaded rod; 39. Threaded block; 310. Fixed shim; 4. Drive adjustment assembly; 41. Concave plate; 42. Electric push rod; 43. Moving concave block; 44. Slide groove; 45. Slider; 5. Servo motor. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-5A hot air nonwoven fabric ginning device includes a base 1, a main ginning roller 100, and a secondary ginning roller 101. Vertical plates 102 are installed on both the left and right sides of the top of the base 1, and are fixedly connected to the base 1 by welding. A controller is installed on the right vertical plate 102, which is electrically connected to a servo motor 5 and an electric push rod 42, and its parameters are set. The main ginning roller 100 and the secondary ginning roller 101 are respectively positioned above the base 1, parallel to each other, with the main roller below and the secondary roller above. The pre-set patterns on the roller surface, such as stripes, dots, and grids, are used to extrude the hot air nonwoven fabric, forming a permanent pattern on the surface of the nonwoven fabric. The main embossing roller 100 is the active roller, driven to rotate by a servo motor 5, while the driven embossing roller 101 is the passive roller, rotating synchronously with the main roller and the nonwoven fabric traction. The two work together to provide uniform embossing pressure. Fixed shafts 103 are installed on both the left and right sides of the main embossing roller 100 and the driven embossing roller 101. The end of the fixed shaft 103 closest to the embossing roller is fixedly connected to the embossing roller by welding.

[0023] Limiting and fixing components 3 are provided on both the left and right sides of the main ginning roll 100 and the secondary ginning roll 101. The limiting and fixing components 3 are used for assembling and disassembling the ginning rolls. The limiting and fixing components 3 include an annular shell 31, which is located above the base 1. The annular shell 31 serves as the outer shell of the limiting component, housing an annular plate 32 and a guide rod 33 inside. The external connections vary depending on the position. A servo motor 5 is installed on the vertical plate 102 on the left side. The right end of the output shaft of the servo motor 5 passes through the vertical plate 102 on the left side and extends to its outside, where it is fixedly connected to the annular shell 31 at the bottom left side. The servo motor 5 provides driving force to rotate the annular shell 31, which is then rotated through a square locking block 36, a square locking groove 37, and a fixed shaft 10. 3. The rotation speed is transmitted to the main ginning roller 100, causing the main ginning roller 100 to rotate at a set speed. The speed of the servo motor 5 is controllable and can be adjusted by the controller to meet different production requirements. The annular shell 31 located at the bottom right side is rotatably connected to the bearing located in the groove of the right vertical plate 102 via a rotating shaft. The two annular shells 31 located at the top are rotatably connected to the bearings in the grooves on the left and right sides of the inner wall of the movable recess 43 via rotating shafts. The annular shell 31 is provided with a movable annular plate 32 inside. The surface of the annular plate 32 slides in contact with the inner wall of the annular shell 31. The annular plate 32 can move linearly along the guide rod 33 inside the annular shell 31. Through its own movement, the annular sleeve 35 is docked and separated from the fixed shaft 103, thereby completing the fixing of the ginning roller. Disassembly and movement are restricted by guide rods 33 to prevent deviation and ensure that the annular sleeve 35 and the fixed shaft 103 are always coaxial. Two guide rods 33 are installed on the inner wall of the annular shell 31. The guide rods 33 are fixedly connected to the inner wall of the annular shell 31 by welding. The guide rods 33 restrict the movement direction of the annular plate 32, allowing it to move linearly along the axial direction of the guide rods 33, preventing the annular plate 32 from rotating or shifting left or right. One end of the guide rod 33 near the annular plate 32 passes through the annular plate 32 and extends to its outside, where a stop block 34 is installed. The stop block 34 is fixedly connected to the guide rod 33 by welding. The side of the stop block 34 near the annular plate 32 is in contact with the annular plate 32. The stop block 34 limits the maximum movement distance of the annular plate 32 to prevent the annular plate 32 from shifting. The annular plate 32 detaches from the guide rod 33. An annular sleeve 35, compatible with the fixed shaft 103, is installed on the side of the annular plate 32 near the fixed shaft 103. The annular sleeve 35 is fixedly connected to the annular plate 32 by welding. One end of the fixed shaft 103 near the annular sleeve 35 penetrates the annular sleeve 35 and extends into it, contacting the inner wall of the annular sleeve 35. The annular sleeve 35 achieves radial positioning of the embossing roller. A square locking block 36 is machined on the inner wall, engaging with a square locking groove 37 on the fixed shaft 103. The square locking block 36 is installed on the inner wall of the annular sleeve 35 and fixedly connected to the inner wall of the annular sleeve 35 by welding. A square locking groove 37 is provided on the side of the fixed shaft 103 near the square locking block 36.The square locking block 36, near the square locking groove 37, penetrates the square locking groove 37 and extends into it, contacting the inner wall of the square locking groove 37. The square locking block 36 and the square locking groove 37 are in a concave-convex fit, which on the one hand realizes the circumferential positioning of the main embossing roller 100 and the annular shell 31, and transmits the power of the servo motor 5; on the other hand, it prevents the embossing roller from slipping during rotation, ensuring stable speed, high transmission efficiency, and no slippage. This ensures that the speed of the main embossing roller 100 is consistent with the output speed of the servo motor 5, avoiding blurring or misalignment of the pattern due to speed fluctuations. A threaded rod 38 is installed on the annular plate 32. The end of the threaded rod 38 away from the annular plate 32 penetrates the annular shell 31 and extends to its outside. A threaded block 39 is threadedly connected to the surface of the threaded rod 38. The threaded block 39 and the threaded rod 38 are threaded together. The connection allows the annular plate 32 to move along the guide rod 33 by rotating and loosening the threaded block 39, thus locking or loosening the annular sleeve 35 and the fixed shaft 103. The threaded drive is self-locking, preventing loosening due to equipment vibration after locking, ensuring the stability of the calender roll during operation. A fixing washer 310 is provided on the surface of the threaded rod 38, located between the annular shell 31 and the threaded block 39. Both ends of the fixing washer 310 are in close contact with the annular shell 31 and the threaded block 39, respectively. The fixing washer 310 increases the contact area between the two, dispersing the locking pressure of the threaded block 39 and preventing localized wear caused by direct contact between the threaded block 39 and the annular shell 31, thereby extending the service life of both the annular shell 31 and the threaded block 39. The fixing washer 310 is made of rubber or stainless steel.

[0024] A drive adjustment assembly 4 is provided on the vertical plate 102. The drive adjustment assembly 4 is used to adjust the distance between the main embossing roller 100 and the secondary embossing roller 101. The drive adjustment assembly 4 includes a concave plate 41, which is installed on the top of the two vertical plates 102. The concave plate 41 is fixedly connected to the vertical plates 102 by welding, providing a mounting carrier for the drive adjustment assembly 4. Two electric push rods 42 are installed on the top of the inner wall of the concave plate 41. The electric push rods 42 are electrically driven to extend and retract, driving the moving concave block 43 to move up and down, thereby adjusting the height of the secondary embossing roller 101 and changing the distance between the main embossing roller 100 and the secondary embossing roller 101. The dual push rods drive synchronously, with stable output force, and can achieve a distance of 0.05mm. Adjustable precision, adaptable to hot air nonwoven fabrics of different specifications with thicknesses of 0.08mm-0.5mm. The bottom ends of the two electric push rods 42 are fixedly connected by a movable concave block 43. The movable concave block 43 is connected to the top annular shell 31 through a bearing, bearing the weight of the ginning roller 101 and the top limiting and fixing assembly 3, and transmitting the driving force of the electric push rods 42 to realize the lifting and rotation of the ginning roller 101. The left and right sides of the inner wall of the concave plate 41 are provided with sliding grooves 44. The left and right sides of the movable concave block 43 are equipped with sliders 45 that slide in contact with the inner wall of the sliding grooves 44. The sliding grooves 44 and the sliders 45 slide in cooperation; restricting the movement direction of the movable concave block 43, allowing it to only rise and fall vertically along the sliding grooves 44, preventing left and right swaying.

[0025] When the ginning roll needs to be disassembled and replaced, rotate the threaded block 39 counterclockwise to release the limit on the threaded rod 38, and then pull the threaded rod 38. The threaded rod 38 drives the annular sleeve 35 to separate from the fixed shaft 103 through the annular plate 32, so that the square locking block 36 and the square locking groove 37 are separated. Then the ginning roll can be removed and a new ginning roll can be installed. Insert the square locking block 36 into the square locking groove 37 and insert the fixed shaft 103 into the annular sleeve 35. Tighten the threaded block 39 again to complete the replacement.

[0026] When in use, set the embossing spacing according to the thickness of the nonwoven fabric to be embossed, input the target spacing value on the controller, start the electric push rod 42 through the controller, control the push rod to move slowly, drive the moving concave block 43 to descend vertically from the embossing roller 101, observe the spacing data displayed in real time on the controller during the descent, and stop the electric push rod 42 immediately and lock the position when the spacing reaches the target value.

[0027] First, start the servo motor 5 and adjust the speed to the production requirement value through the controller. The main embossing roller 100 drives the secondary embossing roller 101 to rotate synchronously. The secondary embossing roller 101 rotates passively due to the friction between itself, the main embossing roller 100, and the nonwoven fabric without slippage. Pass one end of the hot air nonwoven fabric to be embossed through the gap between the main embossing roller 100 and the secondary embossing roller 101, and finally connect it to the subsequent winding equipment, such as a winding machine. Start the winding equipment, and the nonwoven fabric continuously passes through the embossing area under the action of traction force. Through pattern extrusion, a permanent pattern is formed on the surface of the nonwoven fabric.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A calendering device for hot air nonwoven fabric, characterized in that: The system includes a base (1), a main embossing roller (100), and a secondary embossing roller (101). Vertical plates (102) are installed on the left and right sides of the top of the base (1). The main embossing roller (100) and the secondary embossing roller (101) are respectively located above the base (1). Fixed shafts (103) are installed on the left and right sides of the main embossing roller (100) and the secondary embossing roller (101). Limiting and fixing components (3) are provided on the left and right sides of the main embossing roller (100) and the secondary embossing roller (101). The limiting and fixing components (3) are used for disassembling and assembling the embossing roller. A drive adjustment component (4) is provided on the vertical plate (102). The drive adjustment component (4) is used to adjust the distance between the main embossing roller (100) and the secondary embossing roller (101).

2. The calendering device for hot air nonwoven fabric according to claim 1, characterized in that: The limiting and fixing component (3) includes an annular shell (31), which is disposed above the base (1). A movable annular plate (32) is disposed inside the annular shell (31). Two guide rods (33) are installed on the inner wall of the annular shell (31). One end of the guide rod (33) near the annular plate (32) passes through the annular plate (32) and extends to the outside of it, where a stop block (34) is installed.

3. The calendering device for hot air nonwoven fabric according to claim 2, characterized in that: The annular plate (32) is fitted with an annular sleeve (35) that is compatible with the fixed shaft (103) on one side. The fixed shaft (103) is inserted through the annular sleeve (35) and extends into the annular sleeve (35) to contact the inner wall of the annular sleeve (35). A square locking block (36) is installed on the inner wall of the annular sleeve (35). A square slot (37) is opened on the side of the fixed shaft (103) near the square locking block (36).

4. The calendering device for hot air nonwoven fabric according to claim 3, characterized in that: A threaded rod (38) is installed on the annular plate (32). One end of the threaded rod (38) away from the annular plate (32) passes through the annular shell (31) and extends to its outside. A threaded block (39) is threadedly connected to the surface of the threaded rod (38). A fixing washer (310) is provided on the surface of the threaded rod (38) and at a position between the annular shell (31) and the threaded block (39).

5. The calendering device for hot air nonwoven fabric according to claim 1, characterized in that: The drive adjustment assembly (4) includes a concave plate (41), which is installed on the top of two vertical plates (102). Two electric push rods (42) are installed on the top of the inner wall of the concave plate (41). The bottom ends of the two electric push rods (42) are fixedly connected by a movable concave block (43). Slide grooves (44) are provided on both the left and right sides of the inner wall of the concave plate (41). Slider blocks (45) that slide in contact with the inner wall of the slide groove (44) are installed on both the left and right sides of the movable concave block (43).

6. The calendering device for hot air nonwoven fabric according to claim 2, characterized in that: A servo motor (5) is installed on the vertical plate (102) on the left side. The right end of the output shaft of the servo motor (5) passes through the vertical plate (102) on the left side and extends to its outside and is fixedly connected to the annular shell (31) at the bottom of the left side. The annular shell (31) at the bottom of the right side is rotatably connected to the bearing in the groove of the vertical plate (102) on the right side through a rotating shaft.

Images