Fiber consolidation device

Abstract

The invention relates to a fiber consolidation device which comprises a rack, two rolling cylinders and two suction cores, the two suction cores are connected with the rack, and the two rolling cylinders are rotationally connected to the suction cores respectively and are coaxial with the corresponding suction cores; the two rolling cylinders are horizontally arranged in parallel to form a V-shaped area used for receiving materials, and the two rolling cylinders are used for rotating in a matched mode to compact the materials falling from the V-shaped area and convey the materials to the positions below the rolling cylinders. The suction core is located in the hollow cavity, and the end face of one side of the suction core is used for being connected with external air exhaust equipment, so that negative pressure is formed on the V-shaped area through the suction area by the external equipment. And the two rolling cylinders rotate in opposite directions, so that the non-woven fabric is rolled. And external suction equipment is used for sucking waste materials such as short fibers and particles and dust in the V-shaped area, so that the short fibers or the particles are perfectly prevented from being carried by process airflow to enter the outer ring, splashing of the short fibers is effectively reduced, and meanwhile, the product quality is guaranteed 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 nonwoven products containing meltblown, staple fibers or even particles, the high-speed process airflow during the web laying or consolidation process causes the fibers to be dispersed into the surrounding atmosphere, affecting product quality, causing dust pollution and even seriously threatening production equipment and personnel safety. Based on the above problems, how to prevent short fibers or particles from being dispersed by process air and affecting production is the technical problem to be solved by this application. Summary of the invention

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

[0004] The present invention provides a fiber consolidation device, and the technical solution is as follows: A fiber consolidation device comprises a frame, two rolling cylinders and two suction cores, the two suction cores are connected to the frame, 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 in 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. A hollow cavity is opened in the rolling cylinder, and a plurality of external suction holes connected to the hollow cavity are opened on the arc-shaped side wall of the rolling cylinder; 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, and 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 inner suction holes connected with the suction cavity at the curved outer wall of the suction area, and one end face of the suction core is used to connect to an external vacuum device, so that the external device can form a negative pressure on the V-shaped area through the suction area.

[0005] In summary, the above technical solution has the following beneficial effects: when the present application is used, the nonwoven 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, so that the nonwoven fabric dropped from the top is sent between the two rolling cylinders for rolling. One side end face of the suction core is connected to the external air suction equipment through the channel flange, and the external suction equipment sequentially sucks the waste materials such as short fibers and particles 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 entrained 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 spacing 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

[0006] Figure 1 A schematic diagram of a frame of a fiber consolidation device; Figure 2 is a schematic diagram of a translational assembly of a fiber consolidation device; Figure 3 A schematic diagram of a V-shaped region of a fiber consolidation device; Figure 4 A schematic diagram of a suction core of a fiber consolidation device; Figure 5 A schematic diagram of a rotating tank of a fiber consolidation device; Figure 6 A schematic diagram of a shielding plate of a fiber consolidation device; Figure 7 A schematic diagram of the middle teeth of a fiber consolidation device.

[0007] 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

[0008] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments. 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 creative work are within the scope of protection of the present invention.

[0009] 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 arcuate side wall of the suction core 30 extends outward to form a lower wall 32 and an upper wall 33, and 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 inner suction holes 35 connected to the suction cavity 31 at the arcuate outer wall of the suction area 34. One end surface of the suction core 30 is used to connect 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 the present application is used, the nonwoven fabric formed by the meltblown fibers falls between the two rolling cylinders 20, and the two rolling cylinders 20 rotate in opposite directions, the left rolling cylinder 20 rotates clockwise, and the right rolling cylinder 20 rotates counterclockwise, so that the nonwoven fabric dropped from the top is sent between the two rolling cylinders 20 for rolling. One side end face of the suction core 30 is connected to an external suction device through a channel flange. The external suction device sequentially sucks the waste materials such as short fibers and particles in the V-shaped area 11, as well as dust and airflow through the suction cavity 31, the inner suction hole 35, the suction area 34 and the outer suction hole 22, 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 ensuring the quality of the product to the greatest extent. 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 the range of 2-5mm.

[0010] The external suction holes 22 are arranged in an array of squares, each of which is located at the corner of an adjacent square external suction hole 22. The side length of the square external suction hole 22 is a, and the center spacing between adjacent squares is d. The center spacing 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, which are much longer than the external suction holes 22, and therefore will not be sucked into the external suction holes 22.

[0011] The suction core 30 is arranged on the frame 10 through the 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, so as to adjust the distance between the two rolling cylinders 20 to match the thickness of different materials. The nonwoven fabric formed by the melt-blown fiber has different thicknesses. According to the corresponding nonwoven fabric thickness, the spacing between the rolling cylinders 20 can be adjusted by the translation assembly 40 to match the thickness of the nonwoven fabric, so as to achieve a better rolling effect.

[0012] 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 to the fixed part 42 through the movable part 41. The translation assembly 40 can be manual or automatic. In the 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 the automatic translation assembly 40, the movable part 41 is the movable part of a telescopic control part such as an electric telescopic rod and an electromagnet, and the fixed part 42 is the fixed part. One side 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.

[0013] like Figure 4As shown, 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 in the circumferential direction, and the rotation groove 36 is located at the V-shaped area 11; the lower wall surface 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 surface 32, and 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, so as to adjust the curvature of the suction area 34 formed by the upper wall surface 33 and the lower wall surface 32. Specifically, the upper wall surface 33 and the suction core 30 are fixedly connected, and the lower wall surface 32 and the suction core 30 are rotationally connected. The rotation groove 36 is preferably provided at the end surfaces of both sides of the suction core 30, and the connecting block 321 and the rotating block 322 are correspondingly arranged, so that the force on the lower wall surface 32 is better when rotating, and it 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 are fewer waste materials such as short fibers and particles generated by the non-manufacturing fabric. 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, and the lower wall 32 can be close to the upper wall 33. The small suction chamber 31 formed in this way only covers the upper half of the V-shaped area 11, and the airflow generated by the suction is also obliquely downward, which has less interference with the horizontal direction of the nonwoven fabric. If the thickness of the nonwoven fabric formed by the meltblown fibers is relatively large, its own anti-interference ability is relatively good, and there are more waste materials such as short fibers and particles generated by the non-manufacturing fabric. Therefore, it is necessary to keep the lower wall 32 away from the upper wall 33, and increase the curvature of the suction area 34 to 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. The suction forces of the two suction chambers 31 are kept the same as much as possible to reduce the force on the nonwoven fabric in the horizontal direction.

[0014] like Figure 5 As shown, the inner 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 one 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, and the shielding piece 323 is used to block the inner 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 thickness of the non-woven fabric is small, the lower wall surface 32 is close to the upper wall surface 33, the suction cavity 31 is reduced, and the inner suction hole 35 located on the side of the lower wall surface 32 away from the upper wall surface 33 will be blocked by the shielding sheet 323, so that the suction force on the V-shaped area 11 is small, and the suction force is downward, which has little effect on the non-woven fabric and can absorb short fibers. When the thickness of the non-woven fabric is thick, the lower wall surface 32 is away from the upper wall surface 33, the suction cavity 31 is increased, and the inner suction holes 35 are all exposed, so that the suction force on the V-shaped area 11 is large.

[0015] like Figure 6As shown, the shielding sheet 323 is provided with arc-shaped teeth 324, and the arc-shaped teeth 324 are arranged along the circumference of the shielding sheet 323; the suction core 30 is rotatably provided with an intermediate tooth 37, and the first side of the intermediate tooth 37 is meshed with the arc-shaped tooth 324; the frame 10 is fixedly provided with a row of teeth 12, and the row of teeth 12 is located at the end surface of the suction core 30, and the second side of the intermediate 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 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 sheet 323 gradually covers the inner suction hole 35 is the direction in which the upper wall surface 33 and the lower wall surface 32 approach each other, and the direction in which the shielding sheet 323 assembly gradually releases the inner suction hole 35 is the direction in which the upper wall surface 33 and the lower wall surface 32 move away from each other. The position of the row of teeth 12 is fixed, and through the setting of the middle teeth 37 and the row of teeth 12, the curvature between the lower wall surface 32 and the upper wall surface 33 can be adaptively adjusted along with 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 surface 32 and the upper wall surface 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 surface 32 and the upper wall surface 33, and the smaller the suction area 34. The middle 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 side plates are provided on both sides of the suction area 34 of the suction core 30 , thereby cooperating with the upper wall surface 33 and the lower wall surface 32 to enclose the suction area 34 .

[0016] The middle 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. Because the horizontal movement distance of the suction core 30 is small, and the lower wall surface 32 needs to rotate within a range of about 80 degrees, the large teeth 371 and the small teeth 372 are arranged to allow a small horizontal movement to drive a large rotation of the lower wall surface 32, thereby better achieving the effect of adjusting the size of the suction area 34. The ratio of the large teeth 371 and the small teeth 372 is determined according to actual conditions.

[0017] like Figure 7 As shown, the middle tooth 37 is rotatably arranged on the curved rod 373, the curved rod 373 is fixedly connected to the suction core 30, and a passage 325 is provided on the shielding sheet 323, and the position of the passage 325 corresponds to the curved rod 373, for allowing the curved rod 373 to pass through. The middle tooth 37 is 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 sheet 323 overlap, and a communication port needs to be provided on the shielding sheet 323 to allow the curved rod 373 to pass through.

[0018] A ball is arranged on one side of the shielding sheet 323 facing the suction core 30. The ball is used to allow the shielding sheet 323 to rotate along the outer surface of the suction core 30 better, and the position of the ball is set away from the position of the inner suction hole 35.

[0019] A cleaning strip 326 is provided at one end of the lower wall 32 close to the suction core 30. The cleaning strip 326 extends along the axial direction of the suction core 30. When the lower wall 32 rotates along the circumference of the suction core 30, the cleaning strip 326 is used to clean the waste on the suction core 30. After the waste such as short fibers and particles are sucked in from the outer suction hole 22, most of them will be sucked away through the inner suction hole 35, and a small part will adhere to the surface of the suction core 30. The present application sets a cleaning strip 326 on the lower wall 32. When the lower wall 32 adjusts the size of the suction area 34, it can also clean the surface of the suction core 30. It can also be manually controlled to avoid rotation for cleaning. The cleaning strip 326 can be made of cotton, silicone or rubber.

[0020] The suction core 30 is provided with a lower ash groove 38 at 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, and is used for the cleaning strip 326 to push the waste into the lower ash groove 38. When the cleaning strip 326 cleans the surface of the suction core 30, it may not be able to push the waste into the inner suction hole 35, so the lower ash groove 38 is opened so that the cleaning core can push all the cleaned waste into the lower ash groove 38. The lower ash groove 38 is located at the position where the lower wall surface 32 is located when the suction area 34 is the smallest.

[0021] The beneficial effects of the present application include: 1. Two opposing rolling cylinders 20 are used to form 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. Through the two opposing rolling cylinders 20, the collected fibers can be rolled and shaped, thereby forming a stable non-woven fabric with certain strength in all directions, and the subsequent winding is changed. 3. This patented technology integrates the web 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.

[0022] The above are only preferred embodiments of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A fiber consolidation device, characterized in that: It comprises a frame (10), two rolled cylinders (20) and two suction cores (30), wherein the two suction cores (30) are connected to the frame (10), and the two rolled 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) connected to 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 curved side wall of the suction core (30) extends outward to form a lower wall (32) and an upper wall (33), and 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 inner suction holes (35) connected to the suction cavity (31) at the curved 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).

2. A fiber consolidation device according to claim 1, characterized in that: The external suction holes (22) are squares arranged in an array, 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. A fiber consolidation device according to claim 1, characterized in that: 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), so as to adjust the distance between the two rolling cylinders (20) to match the thickness of different materials.

4. A fiber consolidation device according to claim 3, characterized in that: The translation assembly (40) comprises 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).

5. A fiber consolidation device according to claim 3, characterized in that: 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).

6. A fiber consolidation device according to claim 5, characterized in that: 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 sheet (323) extends from one end of the lower wall surface (32) close to the suction core (30); the shielding sheet (323) extends toward a side away from the upper wall surface (33); and the shielding sheet (323) fits the arc-shaped outer wall of the suction core (30); the shielding sheet (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).

7. A fiber consolidation device according to claim 6, characterized in that: The shielding sheet (323) is provided with arc-shaped teeth (324), and the arc-shaped teeth (324) are arranged along the circumference of the shielding sheet (323); The suction core (30) is rotatably provided with an intermediate tooth (37), and a first side of the intermediate tooth (37) is meshed with the arc-shaped tooth (324); A row of teeth (12) is fixedly arranged 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).

8. A fiber consolidation device according to claim 7, characterized in that: The intermediate teeth (37) include a large tooth (371) and a small tooth (372) that are coaxially arranged, the large tooth (371) meshes with the arc-shaped teeth (324), and the small tooth (372) extends to the row of teeth (12) and meshes with the row of teeth (12).

9. A fiber consolidation device according to claim 6, characterized in that: 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 circumferential direction of the suction core (30), the cleaning strip (326) is used to clean waste materials on the suction core (30).

10. A fiber consolidation device according to claim 9, characterized in that: The suction core (30) is provided with a lower ash groove (38) at 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).

Images