A fiber consolidation device

Abstract

The present invention seeks protection for a fiber consolidation device comprising a frame, two rolling cylinders, and two suction cores, wherein the two suction cores are connected to the frame, and the two rolling cylinders are respectively rotatably connected to one suction core and are coaxial with the corresponding suction core; the two rolling cylinders are arranged horizontally and parallel to form a V-shaped area for receiving materials, and are used to cooperate with the rotation to compact the materials falling from the V-shaped area and transfer them to the bottom of the rolling cylinder; the suction core is located in a hollow cavity, and one end face of the suction core is used to connect to an external suction device, so that the external device can form a negative pressure on the V-shaped area through the suction area. The two rolling cylinders rotate in opposite directions to roll the non-woven fabric. The external suction device sucks the short fibers, particles, and other waste materials and dust in the V-shaped area, thereby perfectly preventing the short fibers or particles from being entrained by the process airflow into the outer ring, effectively reducing the splash of short fibers, and at the same time ensuring the quality of the product to the greatest extent.

Description

Technical Field

[0001] The present invention relates to the technical field of nonwoven fabrics, and more particularly to a fiber consolidation device. Background Art

[0002] When producing ultrafine meltblown fibers or nonwovens containing meltblown, staple fibers, or even particulates, the high-speed process airflow during the web laying or consolidation process can cause fibers to be dispersed into the surrounding atmosphere, impacting product quality, causing dust pollution, and even seriously threatening production equipment and personnel safety. Given these concerns, how to prevent the dispersion of staple fibers or particles by process air, which can affect production, is the technical problem addressed by this application. Summary of the Invention

[0003] In view of the shortcomings of the existing technology, the present invention proposes a fiber consolidation device, which consolidates the fibers through a rolling cylinder, and at the same time, a suction core can suck the waste.

[0004] The present invention provides a fiber consolidation device, and the technical solution is as follows:

[0005] A fiber consolidation device comprises a frame, two rolling cylinders and two suction cores, wherein the two suction cores are connected to the frame, and the two rolling cylinders are respectively rotatably connected to one suction core and are coaxial with the corresponding suction core;

[0006] The two rolling cylinders are arranged horizontally and parallel to form a V-shaped area for receiving materials. The materials falling from the V-shaped area are compacted and transferred to the bottom of the rolling cylinder by the rotation. A hollow cavity is provided in the rolling cylinder, and a plurality of external suction holes communicating with the hollow cavity are provided on the arc-shaped side walls of the rolling cylinder.

[0007] The suction core is located in the hollow cavity, and a suction cavity is provided in the suction core. The curved side wall of the suction core extends outward to form a lower wall and an upper wall. The upper wall and the lower wall form a suction area facing the V-shaped area. The suction core is provided with a plurality of internal suction holes connected to the suction cavity at the curved outer wall of the suction area. One end face of the suction core is used to connect to an external exhaust device, so that the external device can form a negative pressure on the V-shaped area through the suction area.

[0008] In summary, the above technical solution has the following beneficial effects: when the present application is used, the non-woven fabric formed by the meltblown fibers falls between the two rolling cylinders, and the two rolling cylinders rotate in opposite directions, the left rolling cylinder rotates clockwise, and the right rolling cylinder rotates counterclockwise, thereby sending the non-woven fabric dropped from above into the space between the two rolling cylinders for rolling. One side end face of the suction core is connected to the external air extraction equipment through a channel flange. The external suction equipment sequentially suctions the short fibers, particles and other waste materials and dust in the V-shaped area through the suction cavity, the inner suction hole, the suction area and the outer suction hole, thereby perfectly preventing the short fibers or particles from being carried into the outer ring by the process airflow, effectively reducing the splashing of short fibers, and at the same time ensuring the quality of the product to the greatest extent. Specifically, the distance between the upper wall and the lower wall and the inner surface of the rolling cylinder is controlled within the range of 2-5mm. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 A schematic diagram of a frame of a fiber consolidation device;

[0010] Figure 2 A schematic diagram of a translational assembly of a fiber consolidation device;

[0011] Figure 3 This is a schematic diagram of a V-shaped area of ​​a fiber consolidation device;

[0012] Figure 4 A schematic diagram of a suction core of a fiber consolidation device;

[0013] Figure 5 A schematic diagram of a rotating trough of a fiber consolidation device;

[0014] Figure 6 A schematic diagram of a shielding plate for a fiber consolidation device;

[0015] Figure 7 Schematic diagram of the middle teeth of a fiber consolidation device.

[0016] Figure numerals: 10, frame; 11, V-shaped area; 12, row of teeth; 20, rolling cylinder; 21, hollow cavity; 22, external suction hole; 30, suction core; 31, suction cavity; 32, lower wall; 321, connecting block; 322, rotating block; 323, shielding piece; 324, arc-shaped teeth; 325, passage; 326, cleaning strip; 33, upper wall; 34, suction area; 35, internal suction hole; 36, rotating groove; 37, middle teeth; 371, large teeth; 372, small teeth; 373, bent rod; 38, lower ash trough; 40, translation assembly; 41, movable part; 42, fixed part. DETAILED DESCRIPTION

[0017] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] like Figure 1-Figure 3 As shown, a fiber consolidation device includes a frame 10, two rolling cylinders 20 and two suction cores 30, the two suction cores 30 are connected to the frame 10, and the two rolling cylinders 20 are respectively rotatably connected to one suction core 30 and are coaxial with the corresponding suction core 30; the two rolling cylinders 20 are arranged horizontally and parallel to form a V-shaped area 11 for receiving materials, which is used to cooperate with the rotation to compact the materials falling from the V-shaped area 11 and transfer them to the bottom of the rolling cylinder 20, a hollow cavity 21 is opened in the rolling cylinder 20, and a plurality of external suction holes 22 connected to the hollow cavity 21 are opened on the arc-shaped side wall of the rolling cylinder 20; the suction core 30 is located in the hollow cavity 21, and the suction cavity 31 is opened in the suction core 30. The curved side wall of the suction core 30 extends outward to form a lower wall 32 and an upper wall 33. The upper wall 33 and the lower wall 32 form a suction area 34 facing the V-shaped area 11. The suction core 30 is provided with a plurality of internal suction holes 35 connected to the suction cavity 31 on the curved outer wall of the suction area 34. One end face of the suction core 30 is used to connect to an external suction device, so that the external device can form a negative pressure on the V-shaped area 11 through the suction area 34. When used in this application, the non-woven fabric formed by the melt-blown fibers falls between the two rolling cylinders 20. The two rolling cylinders 20 rotate in opposite directions, the left rolling cylinder 20 rotates clockwise and the right rolling cylinder 20 rotates counterclockwise, thereby sending the non-woven fabric dropped from the top into the space between the two rolling cylinders 20 for rolling. One end face of the suction core 30 is connected to an external suction device via a channel flange. This external suction device sequentially extracts waste materials, such as short fibers and particles, as well as dust and airflow, from the V-shaped area 11 through the suction cavity 31, internal suction hole 35, suction area 34, and external suction hole 22. This effectively prevents short fibers or particles from being carried into the outer ring by the process airflow, effectively reducing short fiber splashing while maximizing product quality. Specifically, the spacing between the upper wall 33 and the lower wall 32 and the inner surface of the rolling cylinder 20 is controlled within a range of 2-5 mm.

[0019] The external suction holes 22 are arranged in a square array, with each square external suction hole 22 located at the corner of an adjacent square external suction hole 22. The side length of each square external suction hole 22 is a, and the center-to-center distance between adjacent squares is d. The center-to-center distance d is greater than twice a and less than three times a. The nonwoven fabric formed by the meltblown fibers is in the form of long filaments, much longer than the external suction holes 22, and therefore is not sucked into the external suction holes 22.

[0020] The suction core 30 is mounted on the frame 10 via a translation assembly 40. This assembly 40 controls the horizontal, radial translation of the calendering cylinder 20 and the suction core 30, thereby adjusting the distance between the two calendering cylinders 20 to match the thickness of different materials. Nonwoven fabrics formed from meltblown fibers have varying thicknesses. Depending on the thickness of the corresponding nonwoven fabric, the spacing between the calendering cylinders 20 can be adjusted by the translation assembly 40 to match the thickness of the nonwoven fabric, thereby achieving a better calendering effect.

[0021] The translation assembly 40 includes a movable part 41 and a fixed part 42. The movable part 41 and the fixed part 42 are slidably connected. The fixed part 42 is connected to the frame 10. The suction core 30 is connected to the fixed part 42 via the movable part 41. The translation assembly 40 can be manual or automatic. In a manual translation assembly 40, the movable part 41 includes a handle, a tooth core and a rack. The fixed part 42 is a slide rail. The slide rail is set on the frame 10. The suction core 30 is set on the rack. The handle is connected to the tooth core, and the tooth core is connected to the rack. The handle drives the rack to translate on the slide rail through the tooth core, thereby driving the suction core 30 to translate. In an automatic translation assembly 40, the movable part 41 is the movable part of a telescopic control component such as an electric telescopic rod or an electromagnet, and the fixed part 42 is the fixed part. One end face of the rolling cylinder 20 is connected to the motor through a belt to realize the rotation of the rolling cylinder 20. The motor is arranged below the rolling cylinder 20, so that the movement of the rolling cylinder 20 in the horizontal direction for a certain distance will not affect the rotation of the rolling cylinder 20 driven by the motor.

[0022] like Figure 4As shown, the upper wall 33 extends vertically upward, and a rotation groove 36 is provided on the arc-shaped side wall of the suction core 30 along the circumference, and the rotation groove 36 is located at the V-shaped area 11; the lower wall 32 extends a connecting block 321 into the rotation groove 36, and a rotating block 322 is provided at one end of the connecting block 321 away from the lower wall 32. The lower wall 32 and the rotating block 322 cooperate to clamp the suction core 30 and are used to rotate along the circumference of the suction core 30, thereby adjusting the curvature of the suction area 34 formed by the upper wall 33 and the lower wall 32. Specifically, the upper wall 33 and the suction core 30 are fixedly connected, and the lower wall 32 and the suction core 30 are rotationally connected. The rotation groove 36 is preferably opened at the end faces of both sides of the suction core 30, and the connecting block 321 and the rotating block 322 are correspondingly arranged, so that the lower wall 32 is better stressed when rotating and is more convenient to rotate. If the thickness of the nonwoven fabric formed by the meltblown fibers is relatively small, its own anti-interference ability is relatively poor, and there is less waste such as short fibers and particles generated by non-manufacturing cloth. Therefore, the lower wall 32 can be close to the upper wall 33, and the curvature of the suction area 34 can be reduced to make the suction force of the V-shaped area 11 smaller. The lower wall 32 is close to the upper wall 33, and the small suction chamber 31 formed in this way only covers the upper half of the V-shaped area 11. The airflow generated by the suction is also obliquely downward, which has less interference with the horizontal direction of the nonwoven fabric. If the nonwoven fabric formed by the meltblown fibers is thicker, its own anti-interference ability is better, and there are more waste materials such as short fibers and particles generated by non-manufacturing cloth. Therefore, it is necessary to keep the lower wall 32 away from the upper wall 33, increase the curvature of the suction area 34, and make the suction force of the V-shaped area 11 larger. The large suction chamber 31 formed in this way only covers the entire V-shaped area 11, which has a better suction effect. Try to keep the suction force of the two suction chambers 31 the same to reduce the force in the horizontal direction of the nonwoven fabric.

[0023] like Figure 5 As shown, the internal suction hole 35 is opened on the curved side wall of the suction core 30 facing the V-shaped area 11; a shielding piece 323 is extended from the end of the lower wall 32 close to the suction core 30, and the shielding piece 323 extends to the side away from the upper wall 33, and the shielding piece 323 is attached to the curved outer wall of the suction core 30. The shielding piece 323 is used to block the internal suction hole 35 on the side of the lower wall 32 away from the upper wall 33. The shielding sheet 323 and the outer surface of the suction core 30 have the same curvature. The curvature of the V-shaped area 11 is 90 degrees, and the curvature of the shielding sheet 323 is also 90 degrees. When the non-woven fabric is thin, the lower wall 32 approaches the upper wall 33, reducing the suction chamber 31. The inner suction holes 35 located on the side of the lower wall 32 away from the upper wall 33 are blocked by the shielding sheet 323. This reduces the suction force on the V-shaped area 11 and the suction force is downward, which has a minimal impact on the non-woven fabric and can absorb short fibers. When the non-woven fabric is thick, the lower wall 32 moves away from the upper wall 33, increasing the suction chamber 31 and exposing all the inner suction holes 35. This results in a stronger suction force on the V-shaped area 11.

[0024] like Figure 6As shown, arc-shaped teeth 324 are provided on the shielding sheet 323, and the arc-shaped teeth 324 are arranged along the circumference of the shielding sheet 323; an intermediate tooth 37 is rotatably provided on the suction core 30, and the first side of the intermediate tooth 37 is engaged with the arc-shaped teeth 324; a row of teeth 12 is fixedly provided on the frame 10, and the row of teeth 12 is located at the end face of the suction core 30, and the second side of the intermediate tooth 37 extends to the row of teeth 12 and engages with the row of teeth 12; when the two suction cores 30 are controlled to move away from each other, the intermediate teeth 37 and the row of teeth 12 cooperate to drive the lower wall surface 32 to rotate in the direction away from the upper wall surface 33, and when the two suction cores 30 are controlled to move toward each other, the intermediate teeth 37 and the row of teeth 12 cooperate to drive the lower wall surface 32 to rotate in the direction close to the upper wall surface 33. The direction in which the shielding piece 323 gradually covers the inner suction hole 35 is the direction in which the upper wall 33 and the lower wall 32 approach each other, and the direction in which the shielding piece 323 assembly gradually releases the inner suction hole 35 is the direction in which the upper wall 33 and the lower wall 32 move away from each other. The position of the row of teeth 12 is fixed. By setting the intermediate teeth 37 and the row of teeth 12, the curvature between the lower wall 32 and the upper wall 33 can be adaptively adjusted according to the distance between the two suction cores 30, so that the greater the distance between the two suction cores 30, the greater the angle between the lower wall 32 and the upper wall 33, and the larger the suction area 34; the smaller the distance between the two suction cores 30, the smaller the angle between the lower wall 32 and the upper wall 33, and the smaller the suction area 34. The intermediate teeth 37 can be a gear set composed of multiple gears, or a speed change tooth including a large tooth 371 and a small tooth 372. Annular grooves for the middle teeth 37 to pass through are provided on both sides of the rolling cylinder 20 , and the suction core 30 is provided with side plates on both sides of the suction area 34 , thereby cooperating with the upper wall 33 and the lower wall 32 to enclose the suction area 34 .

[0025] The middle teeth 37 include coaxially arranged large teeth 371 and small teeth 372. The large teeth 371 mesh with the arcuate teeth 324, while the small teeth 372 extend to the row of teeth 12 and mesh there. Because the suction core 30 has a relatively small horizontal movement, while the lower wall 32 rotates approximately 80 degrees, the arrangement of the large teeth 371 and small teeth 372 allows a small horizontal movement to drive a large rotation of the lower wall 32, thereby effectively adjusting the size of the suction area 34. The ratio of the large teeth 371 to the small teeth 372 is determined based on actual conditions.

[0026] like Figure 7 As shown, the middle teeth 37 are rotatably mounted on the curved rod 373, which is fixedly connected to the suction core 30. The shielding piece 323 is provided with a passage 325, which is positioned corresponding to the curved rod 373 and is used to allow the curved rod 373 to pass through. The middle teeth 37 are located on the side of the lower wall 32 away from the upper wall 33, so the paths of the curved rod 373 and the shielding piece 323 overlap, requiring a communication port to be provided on the shielding piece 323 to allow the curved rod 373 to pass through.

[0027] A ball is provided on the side of the shielding sheet 323 facing the suction core 30. The ball is used to allow the shielding sheet 323 to rotate better along the outer surface of the suction core 30, and the position of the ball is set to avoid the position of the inner suction hole 35.

[0028] A cleaning strip 326 is provided on one end of the lower wall 32, near the suction core 30. The cleaning strip 326 extends axially along the suction core 30. As the lower wall 32 rotates circumferentially along the suction core 30, the cleaning strip 326 is used to clean waste from the suction core 30. After short fibers, particulate matter, and other waste materials are drawn in through the outer suction holes 22, most of them are drawn away through the inner suction holes 35, with a small portion adhering to the surface of the suction core 30. The present application provides the cleaning strip 326 on the lower wall 32. This helps clean the surface of the suction core 30 when the lower wall 32 adjusts the size of the suction area 34. It can also be manually controlled to avoid rotation for cleaning purposes. The cleaning strip 326 can be made of cotton, silicone, or rubber, among other materials.

[0029] The suction core 30 has a lower ash trough 38 defined on the curved outer wall of the suction zone 34. This trough 38 extends axially and is located near the upper wall 33. This trough allows the cleaning strip 326 to push waste material into the trough 38. When cleaning the surface of the suction core 30, the cleaning strip 326 may not necessarily push waste material into the inner suction hole 35. Therefore, the lower ash trough 38 is provided to allow the cleaning core to push all cleaned waste material into the trough 38. The lower ash trough 38 is located where the lower wall 32 is located when the suction zone 34 is at its smallest.

[0030] The beneficial effects of the present application include: 1. The use of two opposing rolling cylinders 20 forms a V-shaped area 11 for the fibers and airflow falling from above, which can better receive the fibers and reduce the phenomenon of fiber "splashing" compared to the traditional horizontal mesh curtain. 2. The collected fibers can be rolled and shaped by the two opposing rolling cylinders 20, thereby forming a stable non-woven fabric with a certain strength in all directions, and changing the subsequent winding. 3. This patented technology integrates the laying machine and the consolidation equipment in the non-woven fabric production process into one, reducing the structural complexity of the complete set of equipment, and also improving the stability of the equipment. 4. After the spacing between the rolling cylinders 20 is adjusted, the distance between the lower wall 32 and the upper wall 33 can be automatically adjusted, thereby changing the size of the suction area 34.

[0031] The above are merely preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions based on the principles of the present invention are within the scope of protection of the present invention. It should be noted that improvements and modifications that do not depart from the principles of the present invention are within the scope of protection of the present invention.

Claims

1. A fiber consolidation device, characterized in that: The machine comprises a frame (10), two rolling cylinders (20) and two suction cores (30), wherein the two suction cores (30) are connected to the frame (10), and the two rolling cylinders (20) are respectively rotatably connected to one suction core (30) and are coaxial with the corresponding suction core (30); The two rolling cylinders (20) are arranged horizontally and in parallel to form a V-shaped area (11) for receiving materials, and are used to cooperate with the rotation to compact the materials falling from the V-shaped area (11) and transfer them to the bottom of the rolling cylinder (20). A hollow cavity (21) is provided in the rolling cylinder (20), and a plurality of external suction holes (22) communicating with the hollow cavity (21) are provided on the arc-shaped side wall of the rolling cylinder (20); The suction core (30) is located in the hollow cavity (21), and a suction cavity (31) is provided in the suction core (30). The arc-shaped side wall of the suction core (30) extends outward to form a lower wall surface (32) and an upper wall surface (33), and the upper wall surface (33) and the lower wall surface (32) form a suction area (34) facing the V-shaped area (11). The suction core (30) is provided with a plurality of inner suction holes (35) connected to the suction cavity (31) at the arc-shaped outer wall of the suction area (34). One end surface of the suction core (30) is used to connect to an external suction device, so that the external device can form a negative pressure on the V-shaped area (11) through the suction area (34); The suction core (30) is arranged on the frame (10) via a translation assembly (40), and the translation assembly (40) is used to control the horizontal radial translation of the rolling cylinder (20) and the suction core (30), thereby adjusting the distance between the two rolling cylinders (20) to match the thickness of different materials; The upper wall surface (33) extends vertically upward, and a rotation groove (36) is provided on the arc-shaped side wall of the suction core (30) along the circumferential direction, and the rotation groove (36) is located at the V-shaped area (11); The lower wall surface (32) is provided with a connecting block (321) extending into the rotating groove (36); a rotating block (322) is provided at one end of the connecting block (321) away from the lower wall surface (32); the lower wall surface (32) and the rotating block (322) cooperate to clamp the suction core (30) and are used to rotate along the circumference of the suction core (30), thereby adjusting the curvature of the suction area (34) formed by the upper wall surface (33) and the lower wall surface (32); The inner suction hole (35) is provided on the arc-shaped side wall of the suction core (30) facing the V-shaped area (11); A shielding piece (323) extends from one end of the lower wall surface (32) close to the suction core (30), and the shielding piece (323) extends to a side away from the upper wall surface (33), and the shielding piece (323) fits the arc-shaped outer wall of the suction core (30), and the shielding piece (323) is used to block the inner suction hole (35) on the side of the lower wall surface (32) away from the upper wall surface (33); A cleaning strip (326) is provided at one end of the lower wall surface (32) close to the suction core (30), and the cleaning strip (326) extends along the axial direction of the suction core (30). When the lower wall surface (32) rotates along the circumference of the suction core (30), the cleaning strip (326) is used to clean waste materials on the suction core (30).

2. A fiber consolidation device according to claim 1, characterized in that: The external suction holes (22) are arranged in an array of squares, each square external suction hole (22) is located at a corner of an adjacent square external suction hole (22), the side length of the square external suction hole (22) is a, the center distance between adjacent squares is d, and the center distance d is greater than twice a and less than three times a.

3. The fiber consolidation device according to claim 1, characterized in that: The translation assembly (40) includes a movable part (41) and a fixed part (42), the movable part (41) and the fixed part (42) are slidably connected, the fixed part (42) is connected to the frame (10), and the suction core (30) is connected via the movable part (41) and the fixed part (42).

4. The fiber consolidation device according to claim 1, characterized in that: The shielding piece (323) is provided with arc-shaped teeth (324), and the arc-shaped teeth (324) are arranged along the circumference of the shielding piece (323); An intermediate tooth (37) is rotatably provided on the suction core (30), and a first side of the intermediate tooth (37) is engaged with the arc-shaped tooth (324); A row of teeth (12) is fixedly provided on the frame (10), the row of teeth (12) is located at the end surface of the suction core (30), and the second side of the middle tooth (37) extends to the row of teeth (12) and meshes with the row of teeth (12); When the two suction cores (30) are controlled to move in a direction away from each other, the middle teeth (37) and the row of teeth (12) cooperate to drive the lower wall surface (32) to rotate in a direction away from the upper wall surface (33); when the two suction cores (30) are controlled to move in a direction toward each other, the middle teeth (37) and the row of teeth (12) cooperate to drive the lower wall surface (32) to rotate in a direction toward the upper wall surface (33).

5. The fiber consolidation device according to claim 4, characterized in that: The intermediate teeth (37) include a large tooth (371) and a small tooth (372) arranged coaxially, the large tooth (371) meshes with the arc-shaped tooth (324), and the small tooth (372) extends to the row of teeth (12) and meshes with the row of teeth (12).

6. The fiber consolidation device according to claim 1, characterized in that: The suction core (30) is provided with a lower ash groove (38) on the arc-shaped outer wall of the suction area (34). The lower ash groove (38) is opened along the axial direction and close to the upper wall surface (33) for allowing the cleaning strip (326) to push waste into the lower ash groove (38).

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