A slitting device for nonwoven fabric

Abstract

The application discloses a special slitting device for non-woven fabric, which comprises two side plates, a slitting roller is arranged between the side plates, a slitting unit is arranged on one side of the slitting roller, the slitting unit comprises a plurality of slitting assemblies and a plurality of slitting knives, one slitting knife is arranged on each slitting assembly, and the slitting knives can extrude the slitting assemblies to move and tension and flatten the non-woven fabric at a slitting position when slitting. The slitting device has the beneficial effect that when the non-woven fabric is slit, the slitting assemblies are passively moved by being extruded by the plurality of slitting knives, the slitting assemblies tension and flatten the non-woven fabric at the slitting position, the slitting knives can accurately cut the non-woven fabric, and the tearing of the non-woven fabric during slitting and the pulling of the non-woven fabric after slitting are avoided.

Description

Technical Field

[0001] This invention relates to the field of nonwoven fabric manufacturing technology, specifically to a special slitting device for nonwoven fabrics. Background Technology

[0002] Non-woven fabric, also known as non-woven cloth, needle-punched cotton, needle-punched non-woven fabric, etc., is made of polyester fiber and polyester fiber (PET) material and is made through needle punching process. It can be made in different thicknesses, feel, hardness, etc. Non-woven fabric has the characteristics of moisture-proof, breathable, flexible, thin, flame-retardant, non-toxic and odorless, inexpensive and recyclable. It is widely used in sound insulation and heat insulation, masks, clothing, medical, filling materials, etc.

[0003] For example, the patent with authorization announcement number CN111691175B, authorization announcement date May 28, 2021, and titled "A Nonwoven Fabric Slitting Device," includes a machine body, a nonwoven fabric fixing device, a nonwoven fabric slitting device, a nonwoven fabric roll, and a support frame. The nonwoven fabric fixing device is provided on the cutting table of the machine body. The nonwoven fabric fixing device cooperates with the nonwoven fabric roll, and the nonwoven fabric roll is installed on the support frame, which is connected to the machine body. The beneficial effects of this patent are: through the combined arrangement of the nonwoven fabric fixing mechanism, fixing plate, fixing power mechanism, U-shaped box, connecting pipe, corrugated pipe, fixing components, and guide rod, the two ends of the nonwoven fabric at each slitting point can be highly compressed, separating the pressing part from the slitting part, preventing the nonwoven fabric from shifting due to the loosening of tension caused by cutting, and ensuring that the nonwoven fabric is slitted smoothly, avoiding cracking of the nonwoven fabric.

[0004] The shortcomings of the existing technology are that the existing technology generally presses the non-woven fabric directly at the uncut position and then cuts the non-woven fabric. Moreover, there is no restriction on the cutting position, which makes the non-woven fabric prone to tearing at the cutting position and entanglement after cutting. Summary of the Invention

[0005] The purpose of this invention is to provide a special slitting device for nonwoven fabrics to overcome the above-mentioned shortcomings in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a nonwoven fabric slitting device, comprising two side plates, a slitting roller disposed between the side plates, a slitting unit disposed on one side of the slitting roller, the slitting unit comprising multiple slitting components and multiple slitting blades, each of the slitting components being provided with one slitting blade, the slitting blade being able to squeeze the slitting component to move and tension and flatten the nonwoven fabric at the slitting point when slitting.

[0007] The aforementioned slitting unit further includes a horizontal plate, which is disposed between the two side plates, and the plurality of slitting components are slidably disposed on the horizontal plate.

[0008] The aforementioned slitting assembly further includes a swing mechanism, which can drive the slitting blade to approach the slitting roller via the horizontal plate to slitting the nonwoven fabric.

[0009] As described above, the slitting assembly includes a mounting frame, one end of which is provided with an adjusting rod, and the other end of which is provided with a slitting mechanism. The slitting mechanism is used to drive the slitting blade to slit the nonwoven fabric.

[0010] As described above, the slitting mechanism includes a rotary drive component, and a slitting blade is provided at the output end of the rotary drive component. The slitting blade is located at the output end of the rotary drive component via a locking component.

[0011] As described above, the outer side of the slitting roller is evenly provided with multiple slitting grooves, and a rotating ring is provided in the slitting groove. The rotating ring can cooperate with the slitting knife to slit the non-woven fabric.

[0012] As described above, the swing mechanism includes two telescopic members. Each of the opposite sides of the side plate is provided with a mounting plate in a rotatable manner. The bottom of the telescopic member is fixed to the mounting plate. The protruding end of each telescopic member is provided with a horizontal plate in a rotatable manner.

[0013] The slitting assembly further includes a tensioning mechanism, which tensions and flattens the slit portion of the nonwoven fabric when the slitting blade approaches the slitting roller to slit the nonwoven fabric.

[0014] The tensioning mechanism described above includes a support rod, one end of which is provided with an arc-shaped block. The support rod is slidably mounted on the mounting frame via the arc-shaped block. The other end of the support rod is slidably provided with a first tensioning plate. An elastic element is provided between the first tensioning plate and the support rod. Two sliding rods are arranged side by side on one side of the first tensioning plate. A reset element is provided between the sliding rods and the first tensioning plate. A second tensioning plate is provided at one end of each of the two sliding rods.

[0015] As described above, a wiping block is also provided on one side of the mounting bracket, and the slitting blade is inserted into the wiping block.

[0016] In the above technical solution, the beneficial effect of the present invention is that: when cutting nonwoven fabric, the cutting component is passively moved by the multiple cutting blades pressing the cutting component, so that the cutting component tensions and flattens the nonwoven fabric at the cutting point, which facilitates the cutting blades to accurately cut the nonwoven fabric and avoids tearing during the cutting of the nonwoven fabric and entanglement after cutting. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 This is a three-dimensional structural diagram of the nonwoven fabric slitting device provided in an embodiment of the present invention;

[0019] Figure 2 This is a cross-sectional view of the nonwoven fabric slitting device provided in an embodiment of the present invention;

[0020] Figure 3 This is a three-dimensional structural diagram of the slitting component and the slitting blade provided in another embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram showing the disconnection between the guide rod, cross plate, connecting rod, rubber pad, and telescopic component according to another embodiment of the present invention.

[0022] Figure 5 A partial cross-sectional view of the mounting bracket, adjusting rod, support rod, arc block, first buffer member, and rotary drive member provided in another embodiment of the present invention;

[0023] Figure 6 A cross-sectional view of the support rod, the first tensioning plate, the elastic element, and the second tensioning plate provided in another embodiment of the present invention;

[0024] Figure 7 A partial cross-sectional view between the first tensioning plate, the slide bar, the reset member, and the second tensioning plate, provided in another embodiment of the present invention;

[0025] Figure 8 A partial three-dimensional structural schematic diagram of a tensioning mechanism provided in another embodiment of the present invention;

[0026] Figure 9 Provided for yet another embodiment of the present invention Figure 2 A magnified view of a portion of point M;

[0027] Figure 10 A three-dimensional structural schematic diagram of a slitting component provided in another embodiment of the present invention;

[0028] Figure 11 A cross-sectional view of a first tensioning plate, a second tensioning plate, a support frame, a compression block, a second buffer, and a first wedge surface and a second wedge surface, provided in another embodiment of the present invention.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. Side plate; 11. Reversing roller; 12. Guide rod; 2. Slitting roller; 20. Rotary ring; 3. Slitting unit; 30. Slitting assembly; 31. Slitting blade; 32. Horizontal plate; 320. Pressure roller; 321. Connecting rod; 322. Rubber pad; 33. Swinging mechanism; 330. Telescopic component; 331. Mounting plate; 34. Mounting frame; 340. Wiping block; 3401. Moving block; 3402. Screw; 3403. Grinding disc; 3404. Rubber block; 35. Adjustment... 36. Section rod; 360. Cutting mechanism; 361. Rotary drive component; 37. Locking component; 38. Tensioning mechanism; 390. Support rod; 301. Arc block; 312. First tensioning plate; 323. Elastic component; 334. Slide rod; 345. Reset component; 356. Second tensioning plate; 367. First buffer component; 378. Inclined surface; 381. Support frame; 382. Extrusion block; 383. Second buffer component; 384. First wedge surface; 385. Second wedge surface. Detailed Implementation

[0031] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0032] like Figure 1-11 As shown in the figure, an embodiment of the present invention provides a non-woven fabric slitting device, including two side plates 1, a slitting roller 2 disposed between the two side plates 1, a slitting unit 3 disposed on one side of the slitting roller 2, the slitting unit 3 including multiple slitting components 30 and multiple slitting blades 31, each of the slitting components 30 being provided with a slitting blade 31, the slitting blade 31 being able to squeeze the slitting components 30 to move and tension and flatten the non-woven fabric at the slitting point when slitting.

[0033] Specifically, a slitting roller 2 is rotatably arranged between the two side plates 1. Multiple slitting components 30 are evenly arranged along the axial direction on one side of the slitting roller 2. Each slitting component 30 is equipped with a slitting blade 31. The slitting blade 31 can be driven to rotate by the corresponding slitting component 30, and can move along the side plate 1 during rotation. Each slitting component 30 has two plates with basically the same shape. In their natural state, the two plates are held together by elastic force. When the two plates are pressed by the slitting blade 31, they can slide along the axial direction of the slitting roller 2. The nonwoven fabric is unfolded and tensioned (i.e., the two plates slide away from the slitting blade 31 to compress and flatten the nonwoven fabric at the slitting position), and after the slitting blade 31 leaves between the two plates, the two plates can return to their attached state. The slitting blade 31 has two states: when not slitting, it is away from the slitting roller 2; when slitting, it is close to the slitting roller 2. One end of the nonwoven fabric is unwound, and its free end passes between the slitting assembly 30 and the slitting roller 2 for slitting before being wound up. The slitting blade 31 is driven to rotate and then moves closer to the slitting roller 2, so that the two cooperate to cut the nonwoven fabric during unwinding and winding, that is... The slitting direction is the moving direction of the slitting blade 31. A reversing roller 11 is also provided between the two side plates 1 on both sides. The reversing roller 11 is located below the slitting assembly 30. The reversing roller 11 can guide and reverse the direction of the slitting nonwoven fabric, facilitating the winding of the nonwoven fabric while preventing the slitting nonwoven fabric from rubbing against the slitting assembly 30 and causing damage. In this embodiment, when the slitting blade 31 is not slitting the nonwoven fabric, it is away from the slitting roller 2. At this time, the nonwoven fabric to be slitting can pass between the slitting unit 3 and the slitting roller 2. Multiple slitting assemblies 30 can... The slitting portion of the nonwoven fabric is pressed tightly against the surface of the slitting roller 2. Multiple slitting components 30 respectively drive the slitting blades 31 located thereon to approach the slitting roller 2, so that the slitting blades 31 can slit the nonwoven fabric. As the slitting blades 31 approach the slitting roller 2, they can squeeze the slitting components 30, allowing the slitting components 30 to move passively to press and flatten the slitting position of the nonwoven fabric, making the slitting position of the nonwoven fabric tight. This facilitates the slitting blades 31 in accurately slitting the nonwoven fabric from the slitting position, avoiding tearing during slitting and entanglement after slitting.

[0034] This invention provides a nonwoven fabric slitting device. When slitting nonwoven fabric, multiple slitting blades 31 squeeze the slitting assembly 30, causing the slitting assembly 30 to move passively. This allows the slitting assembly 30 to tension and flatten the nonwoven fabric at the slitting point, facilitating accurate cutting of the nonwoven fabric by the slitting blades 31 and avoiding tearing or entanglement of the nonwoven fabric during slitting.

[0035] In another embodiment of the present invention, the slitting unit 3 further includes a horizontal plate 32, which is disposed between the two side plates 1. Multiple slitting components 30 are slidably disposed on the horizontal plate 32 to adjust their spacing. Specifically, a groove is provided in the middle of the horizontal plate 32, and multiple slitting components 30 are slidably disposed within the groove. Each side plate 1 has a moving groove. A connecting rod 321 is provided at each of the two ends of the horizontal plate 32. The connecting rod 321 is a rod with a rectangular cross-section. The horizontal plate 32 is slidably disposed within the moving groove via the connecting rod 321. The movement of the horizontal plate 32 within the moving groove allows it to move closer to and further away from the slitting roller 2. In this embodiment, before slitting the nonwoven fabric, the slitting components 30 are moved automatically or manually, causing the slitting components 30 and the slitting blade 31 to move along the groove, thereby adjusting the distance between each slitting component 30 (or slitting blade 31). The slitting blade 31 cuts the nonwoven fabric into different sizes. After the position of the slitting assembly 30 on the horizontal plate 32 is adjusted, the nonwoven fabric to be slitted is passed between the slitting assembly 30 and the slitting roller 2. Thus, when the slitting blade 31 cuts the nonwoven fabric, the horizontal plate 32 is driven to rotate along the moving groove provided on the side plate 1, so that the horizontal plate 32 moves the slitting assembly 30 closer to the slitting roller 2, thereby causing the slitting assembly 30 to move closer to the slitting roller 2. The slitting blade 31 is rotated to slit the nonwoven fabric, while one end of the nonwoven fabric is unwound and the other end is wound up, which facilitates the continuous slitting of the nonwoven fabric by the slitting blade 31. After the nonwoven fabric is slit, the horizontal plate 32 is driven to slide back and reset along the moving groove on the side plate 1, so that the horizontal plate 32 drives the slitting assembly 30 and the slitting blade 31 away from the slitting roller 2, which facilitates the next nonwoven fabric to be slit to enter between the slitting assembly 30 and the slitting blade 31 for slitting processing.

[0036] In another embodiment of the present invention, the slitting assembly 30 further includes a swing mechanism 33. The swing mechanism 33 can drive the slitting blade 31 to approach the slitting roller 2 via the horizontal plate 32 to slit the nonwoven fabric. Specifically, the swing mechanism 33 is disposed at both ends of the horizontal plate 32, and the swing mechanism 33 is rotatably connected to the horizontal plate 32. Each side plate 1 is provided with a swing mechanism 33, which is disposed on the side of the side plate 1 that is far apart from each other. In this embodiment, after the nonwoven fabric to be slit is fed, the swing mechanism 33 drives the horizontal bar to slide along the moving groove via the connecting rod 321, so that... The horizontal plate 32 simultaneously drives multiple slitting components 30 and multiple slitting blades 31 to approach the slitting roller 2. At the same time, each slitting component 30 drives the corresponding slitting blade 31 to rotate. In this way, the slitting blade 31 and the slitting roller 2 cooperate to slit the nonwoven fabric. After the nonwoven fabric is slitted, the swing mechanism 33 can drive the horizontal plate 32 to slide along the moving groove through the connecting rod 321. This allows the horizontal plate 32 to simultaneously drive multiple slitting components 30 and multiple slitting blades 31 to approach or move away from the slitting roller 2. At the same time, the slitting components 30 stop driving the slitting blades 31 to stop rotating to ensure safety and save energy.

[0037] In another embodiment of the present invention, the slitting assembly 30 includes a mounting frame 34. One end of the mounting frame 34 is provided with an adjusting rod 35, and the other end is provided with a slitting mechanism 36. The slitting mechanism 36 is used to drive the slitting blade 31 to slit the non-woven fabric. Specifically, a sliding block is provided at the end of the mounting frame 34 near the adjusting rod 35, and an adjusting groove is provided on one side of the horizontal plate 32. The mounting frame 34 is slidably disposed within the adjusting groove of the horizontal plate 32 via the sliding block. The sliding block can limit the movement of the mounting frame 34 to prevent it from deflecting. One end of the mounting frame 34 is open to… The adjusting rod 35 is provided with a threaded connection, and the middle part of the adjusting rod 35 passes through the slide groove. The diameter of one end of the adjusting rod 35 is larger than the diameter of the slide groove, and the length of the mounting bracket 34 is also larger than the diameter of the slide groove. In this way, the adjusting rod 35 can cooperate with the mounting bracket 34 so that when the two are close to each other, they clamp the horizontal plate 32. The other end of the mounting bracket 34 is provided with a slitting mechanism 36, and the slitting mechanism 36 is provided with a slitting blade 31. The slitting mechanism 36 can drive the slitting blade 31 to rotate. In this embodiment, before slitting the nonwoven fabric, the adjusting rod 35 is rotated automatically or manually, so that the adjusting rod 35 moves along the slide groove. The mounting bracket 34 is moved outward, thus releasing the fixed connection between the mounting bracket 34 and the horizontal plate 32. This facilitates the movement of the mounting bracket 34 to adjust the distance between each of the slitting blades 31. During the movement of the mounting bracket 34, a sliding block moves along the adjustment groove to guide and limit the mounting bracket 34. After determining the size of the nonwoven fabric to be cut by the slitting blade 31, the adjusting rod 35 is rotated in the opposite direction, causing the adjusting rod 35 to move closer to the mounting bracket 34. In this way, the adjusting rod 35 and the mounting bracket 34 can cooperate so that their edges are clamped and fixed on the horizontal plate 32 when they are close to each other. During the cutting of the nonwoven fabric, the swing... Mechanism 33 drives the crossbar to slide along the moving groove via connecting rod 321, so that the cross plate 32 simultaneously drives multiple slitting mechanisms 36 and multiple slitting blades 31 to approach the slitting roller 2. At the same time, the slitting mechanism 36 drives the slitting blades 31 to rotate to slit the nonwoven fabric. After the nonwoven fabric is slitted, the swing mechanism 33 can drive the cross plate 32 to slide in the opposite direction along the moving groove via connecting rod 321, so that the cross plate 32 simultaneously drives multiple slitting mechanisms 36 and multiple slitting blades 31 away from the slitting roller 2. At the same time, the slitting mechanism 36 stops driving the slitting blades 31 to stop rotating to ensure safety and save energy.

[0038] Furthermore, a rubber pad 322 is also provided on the horizontal plate 32. The rubber pad 322 is located on the outside of the slide groove of the horizontal plate 32, that is, the middle of the rubber pad 322 is provided with a groove of the same shape and size as the slide groove. The rubber pad 322 is made of soft material. After the distance between each of the slitting blades 31 is adjusted, when the adjusting rod 35 rotates close to the mounting frame 34, it can squeeze the rubber layer at a fixed position, so that the rubber layer forms a shallow pit at the fixed position of the slitting mechanism 36. The shallow pit can prevent the slitting mechanism 36 and the slitting blades 31 from moving on the horizontal plate 32 when slitting the non-woven fabric.

[0039] Furthermore, a pressure roller 320 is rotatably mounted on one side of the crossbar 32. The outer side of the pressure roller 320 is provided with a soft rubber layer. Thus, when the swing mechanism 33 drives the slitting assembly 30 and the slitting knife 31 to slit the nonwoven fabric through the crossbar 32, the pressure roller 320 can just fit against the surface of the slitting roller 2, so that the pressure roller 320 presses the nonwoven fabric tightly against the outer surface of the slitting roller 2, making it easier for the nonwoven fabric to enter between the slitting roller 2 and the slitting assembly 30, and avoiding wrinkles or jamming of the nonwoven fabric.

[0040] In another embodiment of the present invention, the slitting mechanism 36 includes a rotary drive 360, such as a motor. A slitting blade 31 is mounted on the output end of the rotary drive 360 ​​via a central shaft. The slitting blade 31 is mounted on the central shaft of the output end of the rotary drive 360 ​​via a locking member 361, such as a screw. Specifically, the rotary drive 360 ​​is located at the end of the mounting bracket 34 away from the adjusting rod 35. The slitting blade 31 is mounted on the output end of the rotary drive 360 ​​via a central shaft, and the slitting blade 31 is fixed to the output end of the rotary drive 360 ​​by the locking member 361. On the central axis, in this embodiment, when the swing mechanism 33 drives multiple slitting mechanisms 36 to approach the slitting roller 2 to slit the nonwoven fabric via the horizontal plate 32, the slitting blade 31 is rotated by the rotary drive member 360, so that the slitting blade 31 close to the nonwoven fabric can slit the nonwoven fabric into the required size; if tearing or entanglement occurs during the nonwoven fabric slitting process, it can be determined that the slitting blade 31 is not sharp or is damaged. In this case, the locking member 361 is used to release the fixation of the slitting blade 31, so that the slitting blade 31 can be easily removed and replaced.

[0041] In another embodiment of the present invention, a plurality of slitting grooves are evenly arranged on the outer side of the slitting roller 2, and a rotating ring 20 is arranged in the slitting groove. The rotating ring 20 can cooperate with the slitting knife 31 to slit the nonwoven fabric. Specifically, each slitting groove has a rotating ring 20 arranged in a rotating manner, and each rotating ring 20 has a V-shaped groove in the middle of its outer side. The slitting knife 31 can cooperate with the V-shaped groove on the outer side of the rotating ring 20 to form a shearing effect to ensure that the nonwoven fabric is completely slit. In this embodiment, the rotation drive When component 360 drives the slitting blade 31 to rotate and slit the nonwoven fabric, the slitting blade 31 approaches and enters the V-shaped groove of the rotating ring 20. The slitting blade 31 and the V-shaped groove of the rotating ring 20 form a scissor-like structure so that the slitting blade 31 and the V-shaped groove of the rotating ring 20 cooperate to slit the nonwoven fabric. During the slitting process, the rotating ring 20 can rotate on the slitting roller 2 along with the rotation of the slitting blade 31, ensuring that the slitting blade 31 and the V-shaped groove of the rotating ring 20 can fully cooperate to slit the nonwoven fabric.

[0042] In another embodiment of the present invention, the swing mechanism 33 includes two telescopic members 330, such as cylinders. Each of the opposite sides of the side plate 1 is rotatably provided with a mounting plate 331. The bottom of each telescopic member 330 is fixed to the mounting plate 331. The protruding end of each telescopic member 330 is rotatably provided with one end of a horizontal plate 32. Specifically, the protruding end of each telescopic member 330 is rotatably provided with a sleeve. A rectangular hole is provided along the axis in the middle of the sleeve. A connecting rod 321 is inserted into the sleeve through the rectangular hole. Thus, when cutting the nonwoven fabric, the two telescopic members 330 are simultaneously driven to retract their protruding ends, causing the sleeve to rotate at the protruding end of the telescopic member 330 and, through the connecting rod 321, drive the horizontal plate 32 along... When the moving groove on the side plate 1 moves, and the extended end of the telescopic member 330 drives the horizontal plate 32 to move, the telescopic member 330 drives the mounting plate 331 to rotate on the side plate 1 to adjust its position, ensuring that the telescopic member 330 can smoothly drive the horizontal plate 32 to slide along the moving groove on the side plate 1, so that the horizontal plate 32 accurately drives the slitting knife 31 to approach and cooperate with the rotating ring 20 to slit the non-woven fabric. After slitting, the two telescopic members 330 are driven to extend their extended ends, so that the extended ends of the telescopic members 330 drive the horizontal plate 32 to slide in the opposite direction along the moving groove through the sleeve and connecting rod 321 to reset. At this time, the slitting knife 31 gradually moves away from the rotating ring 20, and the rotation drive member 360 stops driving the slitting knife 31 to rotate.

[0043] Furthermore, to prevent the horizontal plate 32 from flipping (instead of driving the cutting assembly 30 to rotate along the moving groove of the side plate 1), a guide rod 12 is provided in the moving groove of the side plate 1. The guide rod 12 is an arc-shaped rod, and the guide rod 12 is slidably disposed in the connecting rod 321. In this way, when the telescopic member 330 drives the horizontal plate 32 to move along the moving groove of the side plate 1, the guide rod 12 can guide and limit the horizontal plate 32 through the connecting rod 321, so as to prevent the horizontal plate 32 from flipping.

[0044] In another embodiment of the present invention, the slitting assembly 30 further includes a tensioning mechanism 37. The tensioning mechanism 37 tensions and flattens the slitting point of the nonwoven fabric when the slitting blade 31 approaches the slitting roller 2 to slit it. Specifically, the tensioning mechanism 37 is provided at the end of the mounting frame 34 away from the adjusting rod 35, and the tensioning mechanism 37 is slidably mounted on the mounting frame 34. When the extended end of the telescopic member 330 reaches its maximum stroke, the tensioning mechanism 37 just separates from the slitting roller 2; when the extended end of the telescopic member 330 retracts to its minimum stroke, the tensioning mechanism 37... The tensioning mechanism 37 is attached to the outside of the slitting roller 2. At this time, the telescopic member 330 drives the slitting knife 31 to approach the slitting roller 2 through the horizontal plate 32. When the slitting knife 31 cuts the nonwoven fabric, the slitting knife 31 can squeeze the tensioning mechanism 37 so that the tensioning mechanism 37 moves at the slitting position of the nonwoven fabric. This allows the tensioning mechanism 37 to tension and flatten the slitting position of the nonwoven fabric, making it easier for the slitting knife 31 to cut the nonwoven fabric quickly and accurately, avoiding tearing when directly cutting the nonwoven fabric and the situation of entanglement after cutting.

[0045] In another embodiment of the present invention, the tensioning mechanism 37 includes a support rod 370. One end of the support rod 370 is provided with an arc-shaped block 371. The support rod 370 is slidably mounted on the mounting bracket 34 via the arc-shaped block 371. The other end of the support rod 370 is slidably provided with a first tensioning plate 372. An elastic element 373, such as a spring, is provided between the first tensioning plate 372 and the support rod 370. On one side of the first tensioning plate 372, a plurality of sliding rods 374 are arranged side by side through an inner groove. A reset element 375, such as a spring, is provided between the sliding rods 374 and the inner groove wall of the first tensioning plate 372. A second... Specifically, the mounting bracket 34 has an arc-shaped groove at the end away from the adjusting rod 35. An arc-shaped block 371 is slidably disposed within the arc-shaped groove, and a first buffer 377, such as a spring, is disposed between the arc-shaped block 371 and the mounting bracket 34. The first buffer 377 is disposed within the arc-shaped groove, allowing the support rod 370 to slide along the mounting bracket 34 via the arc-shaped block 371 and the arc-shaped groove. A first tensioning plate 372 is slidably disposed on the end of the support rod 370 away from the arc-shaped block 371. A second tensioning plate 376 is slidably disposed on the first tensioning plate 372 via the sliding rod 374. The first tensioning plate 372 and the second tensioning plate 376, both located on the same mounting bracket 34, are slidably disposed on the first tensioning plate 372. The plates 376 are fitted together. Both the first tension plate 372 and the second tension plate 376 have inclined surfaces 378 on their sides that are fitted together and close to the slitting blade 31. The two inclined surfaces 378 meet to form a V-shaped space. The blade edge of the slitting blade 31 is also V-shaped. The included angle between the two inclined surfaces 378 is smaller than the included angle of the blade edge of the slitting blade 31. Thus, the slitting blade 31 can squeeze and separate the fitted first tension plate 372 and the second tension plate 376 without damaging the blade. In this embodiment, after the non-woven fabric is placed between the slitting roller 2 and the slitting assembly 30, the telescopic member 330 is driven to move the horizontal plate 32 along the moving groove on the side plate 1, causing the horizontal plate 32 to move multiple... The slitting assembly 30 and the plurality of slitting blades 31 approach the slitting roller 2, such that the plurality of first tensioning plates 372 and the plurality of second tensioning plates 376 first press the nonwoven fabric to be slitted against the outside of the slitting roller 2. The telescopic member 330 continues to drive the horizontal plate 32 to move along the side plate 1. At this time, since the first tensioning plates 372 and the second tensioning plates 376 are attached to the slitting roller 2, the support rod 370 squeezes the first buffer member 377 along the arc groove of the mounting frame 34 through the arc block 371, ensuring that while the horizontal plate 32 continues to drive the slitting blades 31 to continue to approach the nonwoven fabric, the first tensioning plates 372 and the second tensioning plates 376 always press the nonwoven fabric tightly.Furthermore, as the horizontal plate 32 moves the slitting blade 31 closer to the nonwoven fabric, the slitting blade 31 enters the V-shaped inclined surface 378 between the first tension plate 372 and the second tension plate 376. Thus, as the slitting blade 31 approaches and cuts the nonwoven fabric, it presses against the first tension plate 372 and the second tension plate 376. This causes the first tension plate 372 to press the elastic element 373 along the mounting bracket 34 in a direction away from the slitting blade 31, while the second tension plate 376, through the slide rod 374, presses the reset element 375 in a direction away from the slitting blade 31. The horizontal plate 32 moves the slitting plate 31 to tension and flatten the nonwoven fabric at the cutting position, allowing the slitting blade 31 to quickly and accurately cut the nonwoven fabric. This avoids tearing during direct cutting and prevents entanglement after cutting. After the nonwoven fabric is cut, the horizontal plate 32 moves the slitting blade 31 away from the first tensioning plate 372 and the second tensioning plate 376, causing the elastic element 373 and the reset element 375 to respectively reset the first tensioning plate 372 and the second tensioning plate 376, facilitating reloading to tension the nonwoven fabric at the cutting position.

[0046] Furthermore, the slitting assembly 30 also includes a support frame 381. Each of the first tension plate 372 and the second tension plate 376 has a support frame 381 on its upper side. Each support frame 381 has a pressing block 382 slidably disposed on the side near the slitting blade 31. A second buffer 383, such as a spring, is disposed between the support frame 381 and the pressing block 382. Specifically, the support frame 381 has a receiving space, and the pressing block 382 has an extension block on its upper side. The extension block is preferably trapezoidal. The pressing block 382 is slidably disposed within the receiving space via the extension block, and the receiving space and the extension block support the pressing block. 382 guides and limits the extrusion block 382 to prevent it from detaching from the support frame 381. A second buffer 383 is provided between the extension plate and the support frame 381, and the second buffer 383 is disposed within the receiving space. A first wedge-shaped surface 384 is provided at the end of the extrusion block 382 away from the extension plate. The first wedge-shaped surface 384 can fit against the inclined surface 378. A second wedge-shaped surface 385 is provided on the side of the extrusion block 382 away from the extension plate. The second wedge-shaped surfaces 385 on the two extrusion blocks 382 can also be joined to form a V-shaped space so that the slitting blade 31 can enter. Rubber is provided on the second wedge-shaped surface 385. In the example, after the nonwoven fabric is placed between the slitting roller 2 and the slitting assembly 30, the telescopic member 330 is driven to move the horizontal plate 32 along the moving groove on the side plate 1, so that the horizontal plate 32 drives multiple slitting assemblies 30 and multiple slitting blades 31 to approach the slitting roller 2, thereby causing multiple first tension plates 372 and multiple second tension plates 376 to first press the nonwoven fabric to be slitted against the outside of the slitting roller 2. The telescopic member 330 continues to drive the horizontal plate 32 to move along the side plate 1. At this time, the slitting blades 31 continue to approach the nonwoven fabric and enter between the two extrusion blocks 382, ​​so that the second wedge-shaped surface 385 The two sides of the slitting blade 31 are attached to each other. When the rotary drive 360 ​​drives the slitting blade 31 to rotate, the friction causes the extrusion block 382 to press the second buffer 383 to move downward along the support frame 381, so that the first wedge surface 384 is attached to and presses the inclined surface 378. This allows the extrusion block 382 to separate the first tension plate 372 and the second tension plate 376 so that they can perform a greater degree of tension and flattening on the non-woven fabric at the slitting position. This makes it easier for the slitting blade 31 to quickly and accurately slit the non-woven fabric, avoiding tearing when directly slitting the non-woven fabric and the situation of entanglement after slitting.Meanwhile, under normal conditions, i.e., when the slitting blade 31 is away from the slitting roller 2 (at this time, the slitting blade 31 does not slit the nonwoven fabric, and the first tensioning plate 372 and the second tensioning plate 376 are still attached to the surface of the slitting roller 2), a space for the nonwoven fabric to pass through is formed between the first tensioning plate 372 and the second tensioning plate 376 and the slitting roller 2. At this time, the extrusion block 382 extrudes the inclined surface 378, forcing the first tensioning plate 372 and the second tensioning plate 376 to be in a state of mutual distance, so that the first tensioning plate 372 and the second tensioning plate 376 uniformly limit the nonwoven fabric. This arrangement allows the first tensioning plate 372 and the second tensioning plate 376 to be used to adhere and limit the nonwoven fabric under normal conditions, and to tension the nonwoven fabric during slitting.

[0047] In another embodiment of the present invention, a wiping block 340 is provided on one side of the mounting bracket 34. The slitting blade 31 is inserted into the wiping block 340. Specifically, a groove is provided in the middle of the wiping block 340, and the blade of the slitting blade 31 is disposed in the groove of the wiping block 340. In this way, after the slitting blade 31 rotates and cuts the non-woven fabric, it passes through the wiping block 340, so that the groove of the wiping block 340 cleans the blade of the slitting blade 31, preventing residual material from the non-woven fabric from sticking to the blade of the slitting blade 31. At the same time, the wiping block 340 can cooperate with the locking member 361 to limit the slitting blade 31.

[0048] Furthermore, two moving blocks 3401 are arranged side by side in the groove of the wiping block 340. A screw 3402 is fixedly arranged in the wiping block 340. The screw 3402 has two threads, which are arranged in opposite directions. Each thread has a moving block 3401 in a threaded engagement manner. A grinding disc 3403 is arranged in the middle of the opposite side of each moving block 3401. A rubber block 3404 is arranged at each end of each grinding disc 3403. In this embodiment, when the rotary drive 360 ​​drives the slitting blade 31 to rotate and slit, the... The rubber block 3404 cleans the blade of the slitting knife 31. By rotating the screw 3402, each thread of the screw 3402 simultaneously drives the moving block 3401 located thereon to move relative to it. This makes it convenient for the polishing block to approach and fit against the blade of the slitting knife 31, so that the rotating drive 360 ​​can polish the blade of the slitting knife 31 while driving the slitting knife 31 to rotate and cut the non-woven fabric. After the blade of the slitting knife 31 is polished, the rubber block 3404 at one end of the moving block 3401 cleans the slitting knife 31.

[0049] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A special slitting device for nonwoven fabrics, comprising two side plates, a slitting roller disposed between the side plates, and a slitting unit disposed on one side of the slitting roller, characterized in that: The slitting unit includes multiple slitting components and multiple slitting blades. Each slitting component is provided with a slitting blade. When slitting, the slitting blade can squeeze the slitting component to move and tighten and flatten the cut part of the non-woven fabric. The slitting assembly also includes a tensioning mechanism, which tensions and flattens the slit portion of the nonwoven fabric when the slitting blade approaches the slitting roller to slit the nonwoven fabric. The tensioning mechanism includes a support rod, one end of which is provided with an arc-shaped block. The support rod is slidably mounted on the mounting frame via the arc-shaped block. The other end of the support rod is slidably provided with a first tensioning plate. An elastic element is provided between the first tensioning plate and the support rod. Two sliding rods are arranged side by side on one side of the first tensioning plate. A reset element is provided between the sliding rods and the first tensioning plate. A second tensioning plate is provided at one end of the two sliding rods. The slitting assembly further includes a support frame. Each of the first and second tensioning plates has a support frame on its upper side. A pressing block is slidably disposed on the side of each support frame near the slitting blade. A second buffer is disposed between the support frame and the pressing block. A receiving space is provided within the support frame. An extension block, trapezoidal in shape, is disposed on the upper side of the pressing block. The pressing block is slidably disposed within the receiving space via the extension block, and the receiving space and extension block guide and limit the pressing block, preventing it from detaching from the support frame. A second buffer is disposed between the extension plate and the support frame, within the receiving space. A first wedge-shaped surface is provided at the end of the pressing block away from the extension plate, and this first wedge-shaped surface can fit against an inclined surface. A second wedge-shaped surface is provided on the side of the pressing block away from the extension plate. The second wedge-shaped surfaces on the two pressing blocks can also be joined to form a V-shaped space for the slitting blade to enter. Rubber is disposed on the second wedge-shaped surface.

2. The nonwoven fabric slitting device according to claim 1, characterized in that, The slitting unit also includes a horizontal plate disposed between the two side plates, and a plurality of sliding components are slidably disposed on the horizontal plate.

3. The nonwoven fabric slitting device according to claim 2, characterized in that, The slitting assembly also includes a swing mechanism, which can drive the slitting blade to approach the slitting roller via the cross plate to slit the nonwoven fabric.

4. The nonwoven fabric slitting device according to claim 1, characterized in that, The slitting assembly also includes a mounting frame, one end of which is provided with an adjusting rod, and the other end of which is provided with a slitting mechanism. The slitting mechanism is used to drive the slitting blade to slitting the nonwoven fabric.

5. A nonwoven fabric slitting device according to claim 4, characterized in that, The slitting mechanism includes a rotary drive component, and a slitting blade is provided at the output end of the rotary drive component. The slitting blade is located at the output end of the rotary drive component by a locking component.

6. The nonwoven fabric slitting device according to claim 1, characterized in that, The outer side of the slitting roller is evenly provided with multiple slitting grooves, and a rotating ring is provided in the slitting groove. The rotating ring can cooperate with the slitting knife to slit the non-woven fabric.

7. The nonwoven fabric slitting device according to claim 3, characterized in that, The swing mechanism includes two telescopic members. Each of the side plates has a mounting plate on its opposite side in a rotatable manner. The bottom of the telescopic member is fixed to the mounting plate. The protruding end of each telescopic member is rotatably provided with one end of a horizontal plate.

8. The nonwoven fabric slitting device according to claim 4, characterized in that, A wiping block is also provided on one side of the mounting bracket, and the slitting blade is inserted into the wiping block.

Images