Carding machine

Abstract

To provide a carding machine capable of improving removal performance of fiber waste from between projections.SOLUTION: The carding machine has a suction device 31 and a discharge device 41. The discharge port 45a of the discharge device 41 is disposed on the side opposite to the protruding direction Y of the protrusion 21 with respect to the reference line KL passing through the intersecting point P between the discharge port reference line L1 and the base end circle C1.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a card machine. [Background technology]

[0002] The carding machine combs a fiber mass made of fibers. In the process of producing sliver from the fiber mass, the carding machine transfers the fiber mass from a source roller to a destination roller multiple times. The source roller has multiple protrusions for scraping the fiber mass and sending the scraped fiber mass to the destination roller.

[0003] After the fiber clumps have been scraped off from the surface of the source roller, fiber dust remains on the surface. For example, Patent Document 1 discloses a fluff removal device that removes fluff, which is fiber dust, from the periphery of a doffer roller serving as the source roller.

[0004] In the fluff removal device of Patent Document 1, a slit is formed in a part of the doffer cover that covers the doffer roller. In the fluff removal device, the upper part of the slit faces the slit opening of a suction pipe that communicates with a pressure reducing device. The suction pipe draws in fluff from around the surface of the doffer roller through the slit, thereby preventing fluff from accumulating on the surface of the doffer roller. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Jikko No. 54-25467 Summary of the Invention [Problem to be solved by the invention]

[0006] However, in the fluff removal device disclosed in Patent Document 1, there is a risk that the fibrous waste remaining in the gaps between the protrusions may not be completely removed by suction using the suction pipe. [Means for solving the problem]

[0007] A carding machine for solving the above problems has a plurality of rollers each having a plurality of protrusions that protrude from the surface of a roller body and are arranged at intervals in the rotation direction of the roller body, and transfers the fiber agglomerates while passing the fiber agglomerates between the rollers, and defibrates and combs the fiber agglomerates with the protrusions. Of the plurality of rollers, a roller that scrapes off the fiber agglomerates with the protrusions is defined as a transfer source roller, and a location where the fiber agglomerates are peeled off from the transfer source roller when the fiber agglomerates are transferred from the transfer source roller to a transfer destination is defined as a peeling location. The source roller has an ejection device arranged downstream in the rotation direction and having an ejection port that ejects air toward the source roller, and a suction device having a suction port that sucks up fiber debris swept out from between the protrusions by the air, wherein in the source roller, when the circle formed by connecting the base ends of the multiple protrusions is defined as a base circle, a straight line perpendicular to the tangent to the base circle is defined as a reference line, the surface on which the ejection port opens is defined as a virtual plane, and a straight line perpendicular to the virtual plane is defined as an ejection port reference line, the ejection port is arranged on the opposite side of the reference line that passes through the intersection of the ejection port reference line and the base circle in the protrusion direction.

[0008] According to this, air discharged from the discharge port is blown onto the protrusions facing the discharge port on the rotating source roller. The air blown onto the protrusions then flows along the protrusions in the direction in which the protrusions protrude, that is, from the base end of the protrusions to the tip end of the protrusions. At this time, the air flowing along the protrusions sweeps out fiber debris from between the protrusions. In other words, the air prevents fiber debris from being pushed into the gaps between the protrusions. The fiber debris swept out from between the protrusions is then sucked into the suction port of the suction device. This allows the carding machine to improve its ability to remove fiber debris from between the protrusions.

[0009] In a card machine, if a straight line that passes through the intersection and is parallel to the protruding direction of the protrusion is taken as the protrusion reference line, the suction device is preferably positioned at a position where the suction port opens on an extension of the protrusion reference line.

[0010] With this, the fiber waste that is swept out from between the protrusions and flows in the direction of the protrusions together with the air can be efficiently sucked into the suction device through the suction port. In a carding machine, the source roller may be a doffer roller, and the destination roller may be a conveying roller that conveys a web produced from the fiber mass.

[0011] According to this, the doffer roller is a roller immediately before conveying the web to the conveying roller, and the suction device and discharge device are provided opposite the doffer roller. Therefore, fiber debris can be removed from the doffer roller immediately before conveying the web, thereby preventing excess fiber debris from adhering to the web.

[0012] In a carding machine, the suction device has a leakage suppression member arranged downstream of the suction port in the direction in which the air is discharged from the discharge port, and the leakage suppression member is preferably interposed between the suction port and the tip of the protrusion of the source roller.

[0013] This prevents air discharged from the discharge port and flowing into the vicinity of the suction port from leaking downstream of the suction port in the discharge direction, thereby preventing a decrease in the suction efficiency of the suction port and allowing the carding machine to efficiently suck up fiber waste using the suction device. [Effects of the Invention]

[0014] The present invention can improve the ability to remove fibrous debris from between the protrusions. [Brief explanation of the drawings]

[0015] [Figure 1] FIG. 1 is a diagram showing a schematic diagram of a card machine. [Figure 2]FIG. 2 is a side view showing the doffer roller and fiber removal device. [Figure 3] FIG. 3 is a plan view showing the doffer roller and fiber removal device. [Figure 4] FIG. 4 is an enlarged view showing the discharge port, the suction port, and the protrusion. [Figure 5] FIG. 5 is a diagram illustrating the operation of the fiber removing device. [Figure 6] FIG. 6 is a diagram showing another example of a card machine. DETAILED DESCRIPTION OF THE INVENTION

[0016] An embodiment of the card machine will be described below with reference to FIGS. <Card machine> As shown in Figure 1, the carding machine 10 is a device that produces a web W, which is a precursor of a sliver, from a fiber agglomerate B. The fiber agglomerate B is a mass of fine-diameter fibers F. The carding machine 10 defibrates the fiber agglomerate B and combs it to make the fibers F parallel.

[0017] The carding machine 10 includes a transport conveyor 11, feed rollers 12, take-in rollers 13, cylinder rollers 14, a doffer roller 15, a plurality of walker rollers 16, a plurality of stripper rollers 17, a comb 18, transport rollers 23, and a fiber removal device 30. In Figure 1, the fiber removal device 30 is shown in a simplified form.

[0018] The carding machine 10 has a plurality of rollers, including a feed roller 12, a taker-in roller 13, a cylinder roller 14, a doffer roller 15, a walker roller 16, and a stripper roller 17. Each of the feed roller 12, the taker-in roller 13, the cylinder roller 14, the doffer roller 15, the walker roller 16, and the stripper roller 17 has a roller body 19 that rotates in a rotation direction R, and a card wire 20 provided on a surface 19a of the roller body 19. Note that the rotation direction of each of the rollers 12 to 17 is the same as the rotation direction R of each of the roller bodies 19, and therefore the rotation direction of each of the rollers 12 to 17 will also be referred to as the "rotation direction R."

[0019] The card wire 20 is wound around the surface 19a of the roller body 19 of each of the rollers 12 to 17. By providing the card wire 20 on the roller body 19, each of the rollers 12 to 17 has a plurality of protrusions 21 that protrude from the surface 19a of the roller body 19 and are arranged at intervals in the rotation direction R of the roller body 19.

[0020] As shown in Fig. 2, the card wire 20 is formed with a large number of protrusions 21 provided in the extending direction of the wire 20a. Each protrusion 21 tapers toward the tip and is curved in an arc. Gaps 22 are formed between adjacent protrusions 21 in the rotation direction R of each roller 12 to 17. At each roller 12 to 17, the protrusions 21 apply force to the fiber mass B in approximately the same direction, and the discontinuous fibers F are pulled in the same direction and defibrated.

[0021] As shown in Fig. 1, the transfer conveyor 11 transfers the fiber agglomerates B supplied thereto toward the feed roller 12. The fiber agglomerates B transferred by the transfer conveyor 11 are scraped off by the protrusions 21 of the feed roller 12 and transferred to the surface 19a of the feed roller 12. The feed roller 12 defibrates and combs the fiber agglomerates B transferred to the surface 19a of the feed roller 12, and transfers them toward the keep-in roller 13.

[0022] The feed roller 12 and the stay-in roller 13 are arranged with their protrusions 21 close to each other at a peeling position H where the fiber agglomerates B are peeled from the feed roller 12. The peeling position H is a position where the fiber agglomerates B are peeled from the feed roller 12 when the fiber agglomerates B are transferred from the feed roller 12 to the stay-in roller 13. The fiber agglomerates B transported by the feed roller 12 are scraped off the feed roller 12 by the protrusions 21 of the stay-in roller 13 at the peeling position H and transferred to the surface 19a of the stay-in roller 13. Therefore, between the feed roller 12 and the stay-in roller 13, the feed roller 12 is the source roller that scrapes off the fiber agglomerates B with the protrusions 21, and the stay-in roller 13 is the destination to which the fiber agglomerates B are transferred from the feed roller 12. The stay-in roller 13 defibrates and combs the fiber agglomerates B transferred to the surface 19a of the stay-in roller 13, and transports them toward the cylinder roller 14.

[0023] The stay-in roller 13 and the cylinder roller 14 are arranged with their protrusions 21 close to each other at a peeling position H of the fiber agglomerates B. The peeling position H is a position where the fiber agglomerates B are peeled from the stay-in roller 13 when the fiber agglomerates B are transferred from the stay-in roller 13 to the cylinder roller 14. The fiber agglomerates B transported by the stay-in roller 13 are scraped off the stay-in roller 13 by the protrusions 21 of the cylinder roller 14 at the peeling position H and transferred to the surface 19a of the cylinder roller 14. Therefore, of the stay-in roller 13 and the cylinder roller 14, the stay-in roller 13 is the source roller that scrapes off the fiber agglomerates B with the protrusions 21, and the cylinder roller 14 is the destination to which the fiber agglomerates B are transferred from the stay-in roller 13. The cylinder roller 14 defibrates and combs the fiber agglomerates B transferred to the surface 19a of the cylinder roller 14, and transports them toward the doffer roller 15.

[0024] A portion of the fiber agglomerates B transferred to the surface 19a of the cylinder roller 14 wraps around each of the walker rollers 16, but the wrapped portion of the fiber agglomerates B is stripped off by each of the stripper rollers 17 and returned to the surface 19a of the cylinder roller 14. The walker rollers 16 are the transfer source rollers, and the cylinder rollers 14 are the transfer destination rollers.

[0025] The cylinder roller 14 and the doffer roller 15 are arranged with their protrusions 21 close to each other at a peeling position H of the fiber agglomerates B. The peeling position H is a position where the fiber agglomerates B are peeled from the cylinder roller 14 when the fiber agglomerates B are transferred from the cylinder roller 14 to the doffer roller 15. The fiber agglomerates B transported by the cylinder roller 14 are scraped off the cylinder roller 14 by the protrusions 21 of the doffer roller 15 at the peeling position H and transferred to the surface 19a of the doffer roller 15. Therefore, of the cylinder roller 14 and the doffer roller 15, the cylinder roller 14 is the source roller that scrapes off the fiber agglomerates B with the protrusions 21, and the doffer roller 15 is the destination roller to which the fiber agglomerates B are transferred from the cylinder roller 14. The doffer roller 15 then transports the fiber agglomerates B transferred to the surface 19a of the doffer roller 15 toward the comb 18. Therefore, the carding machine 10 transfers the fiber agglomerates B between the feed roller 12 and the keeper-in roller 13, between the keeper-in roller 13 and the cylinder roller 14, and between the cylinder roller 14 and the doffer roller 15, and defibrates and combs the fiber agglomerates B with the protrusions 21.

[0026] In the process of being fed from the transport conveyor 11 to the feed roller 12 and then conveyed to the doffer roller 15, the fiber agglomerates B are defibrated into single fibers by the action of the protrusions 21, and at the same time the orientation direction of most of the fibers F is aligned in a specific direction, that is, the rotation direction R of each of the rollers 12 to 17. The fiber agglomerates B, which have been defibrated and whose fibers F have been further oriented, are transferred to the surface 19a of the doffer roller 15 as a web W, which is a sheet-like fiber agglomerate B.

[0027] The comb 18 peels the web W from the surface 19a of the doffer roller 15. Therefore, the comb 18 is disposed downstream of a peeling position H of the web W in the rotation direction R of the doffer roller 15. The peeling position H is the position where the web W is peeled from the doffer roller 15 when the web W is transferred from the doffer roller 15 to the transfer roller 23. The web W peeled from the doffer roller 15 by the comb 18 is then transported to a destination (not shown) by the transfer roller 23. Therefore, the transfer roller 23 is a roller that transports the web W produced from the fiber agglomerates B. Regarding the doffer roller 15 and the transfer roller 23, the doffer roller 15 is a source roller that scrapes off the fiber agglomerates B with the protrusions 21, and the transfer roller 23 is a destination to which the web W as fiber agglomerates B is transferred from the doffer roller 15.

[0028] <Fiber removal device> 2 and 3, the fiber removing device 30 is disposed opposite the surface 19a of the roller body 19 of the doffer roller 15. In other words, the fiber removing device 30 is disposed opposite the doffer roller 15, which is the source roller. The protrusions 21 provided on the doffer roller 15 are tapered in the direction opposite to the rotation direction R of the doffer roller 15.

[0029] As shown in Fig. 4, the direction in which the protrusions 21 protrude from the surface 19a of the roller body 19, that is, the direction from the base end of the protrusions 21 toward the tip end thereof, is defined as the protrusion direction Y of the protrusions 21. In this embodiment, the protrusion direction Y of the protrusions 21 is the direction from the midpoint of the dimension in the rotation direction R at the base end of the protrusions 21 toward the tip end of the protrusions 21. The protrusions 21 are formed so as to gradually taper in the protrusion direction Y. Therefore, the protrusion direction Y of the protrusions 21 is also the direction in which the protrusions 21 taper.

[0030] 5, the fiber removing device 30 sweeps out the fiber waste D that has entered the gaps 22 between the protrusions 21, sucks it out of the gaps 22, and removes it from the doffer roller 15. The fiber removing device 30 has a suction device 31 and a discharge device 41. Therefore, the carding machine 10 has the suction device 31 and the discharge device 41.

[0031] <Suction device> 2 and 3, the suction device 31 sucks the fiber debris D swept out from between the protrusions 21 by air discharged from the discharge device 41. The suction device 31 has a suction unit main body 32 facing the roller body 19 of the doffer roller 15, a suction pipe 33 connected to the suction unit main body 32, a suction unit 34 connected to the suction pipe 33, and a leakage suppression member 60 integrated with the suction unit main body 32.

[0032] The suction unit main body 32 is disposed downstream of the comb 18 in the rotation direction R of the doffer roller 15. The suction unit main body 32 is shaped like a pipe extending over the entire axial direction of the doffer roller 15. Note that the suction unit main body 32 does not have to extend over the entire axial direction of the doffer roller 15, and may be divided into multiple parts and disposed in the axial direction of the doffer roller 15.

[0033] The suction portion main body 32 is formed with suction ports 32a that open toward the surface 19a of the roller main body 19 of the doffer roller 15. In this embodiment, the suction ports 32a open over the entire axial direction of the roller main body 19 of the doffer roller 15. The suction ports 32a also open toward a portion of the circumferential direction of the card wire 20, and thus toward a plurality of protrusions 21 that are located on a portion of the circumferential direction. The suction ports 32a open toward the surface 19a and the plurality of protrusions 21 of the roller main body 19 in the axial direction of the roller main body 19.

[0034] The suction device 31 has a first guide member 35 and a second guide member 36 that are integral with the suction unit main body 32. The first guide member 35 is integrated with the suction unit main body 32 so as to sandwich the suction port 32a with the second guide member 36. The first guide member 35 is located closer to the discharge device 41 than the suction port 32a. The second guide member 36 is located on the opposite side of the first guide member 35 with the suction port 32a sandwiched between them. In this embodiment, the first guide member 35 is located downstream of the suction port 32a in the rotation direction R of the doffer roller 15. The second guide member 36 is located upstream of the suction port 32a in the rotation direction R of the doffer roller 15. Therefore, the suction port 32a is sandwiched between the first guide member 35 and the second guide member 36 from both sides in the rotation direction R of the doffer roller 15. In this embodiment, each of the first guide member 35 and the second guide member 36 has a long plate shape that extends over the entire length of the suction unit main body 32 in the longitudinal direction.

[0035] The leakage suppression member 60 is disposed at a position farther from the discharge device 41 than the second guide member 36. In this embodiment, the leakage suppression member 60 is disposed upstream of the suction port 32a in the rotation direction R of the doffer roller 15. The leakage suppression member 60 is integrated with the second guide member 36 and the suction unit main body 32. The leakage suppression member 60 is a long plate extending over the entire length of the suction unit main body 32. A tip edge 60a of the leakage suppression member 60 is slightly spaced apart in the radial direction of the doffer roller 15 from the tips of the protrusions 21 of the doffer roller 15. The leakage suppression member 60 is interposed between the suction port 32a and the tips of the protrusions 21 of the doffer roller 15. In other words, the leakage suppression member 60 closes most of the gap between the opening edge of the suction port 32a and the tips of the protrusions 21.

[0036] <Discharge device> The discharge device 41 is disposed on the doffer roller 15 downstream of the peeling position H in the rotation direction R. The discharge device 41 discharges air toward the doffer roller 15.

[0037] The discharge device 41 has an air supply unit 50, a connecting pipe 51 connected to the supply unit 50, a collecting pipe 42 connected to the connecting pipe 51, and a plurality of air ducts 43 connected to the collecting pipe 42. The collecting pipe 42 and the air ducts 43 are arranged downstream of the suction device 31 in the rotation direction R of the doffer roller 15.

[0038] The collecting pipe 42 extends over the entire axial direction of the roller body 19 of the doffer roller 15. Inside the collecting pipe 42, a flow path 44 extending in the axial direction of the doffer roller 15 is defined.

[0039] A first end of the air duct 43 is connected to the collecting pipe 42. The air duct 43 extends from the collecting pipe 42 toward the doffer roller 15. A second end of the air duct 43 faces the doffer roller 15.

[0040] An air passage 45 is defined inside the air duct 43. A first end of the air passage 45 communicates with the flow path 44 of the collecting pipe 42, and a discharge port 45a opens at a second end of the air passage 45, as shown in Fig. 4. In other words, the discharge device 41 has the discharge port 45a that discharges air toward the doffer roller 15.

[0041] Air generated by driving the supply unit 50 is supplied to the collecting pipe 42 through the connecting pipe 51. The air supplied to the collecting pipe 42 branches from the flow path 44 of the collecting pipe 42 to each air duct 43 and flows into the air passage 45 of each air duct 43. The air that has flowed into each air passage 45 is discharged from each outlet 45a. As the air is discharged from each outlet 45a, the air is discharged over the entire axial direction of the doffer roller 15. The air also flows along the surface 19a of the roller body 19 of the doffer roller 15, and flows over the entire axial direction and part of the circumferential direction of the doffer roller 15.

[0042] The discharge device 41 may not have the collecting pipe 42. In this case, each of the plurality of blower pipes 43 is connected to the supply unit 50 via each connecting pipe 51. <Outlet position> When the doffer roller 15 is viewed in the axial direction, a circle formed by connecting the base ends of the multiple protrusions 21 is defined as a base end circle C1, and a straight line perpendicular to the tangent line CL to the base end circle C1 is defined as a reference line KL. The base end circle C1 is concentric with a circle that follows the surface 19a of the roller body 19.

[0043] Furthermore, the end face at the second end of the air blower duct 43, where the outlet 45a opens, is defined as an imaginary plane S. A straight line perpendicular to the imaginary plane S is defined as an outlet reference line L1. The air discharged from the outlet 45a flows in the direction in which the outlet reference line L1 extends. The direction Z in which the air is discharged from the outlet 45a is the same as the direction in which the outlet reference line L1 extends. The leakage suppression member 60 described above is positioned downstream of the suction port 32a in the direction Z in which the air is discharged from the outlet 45a.

[0044] When the doffer roller 15 is viewed in the axial direction, the point where the discharge outlet reference line L1 intersects with the base end circle C1 is defined as an intersection point P. When the doffer roller 15 is viewed in the axial direction, a straight line that passes through the intersection point P and is parallel to the protruding direction Y of the protrusions 21 is defined as a protrusion reference line L2. In FIG. 4, the protrusion reference line L2 is a straight line that connects the midpoint of the dimension in the rotation direction R at the base end of the protrusion 21 on the base end circle C1 side to the tip of the protrusion 21 and is parallel to the protruding direction Y. When the doffer roller 15 is viewed in the axial direction, the protrusion reference line L2 intersects the tangent line CL at an angle.

[0045] When a reference line KL passing through the intersection P is set as viewed in the axial direction of the doffer roller 15, the discharge opening 45a is located on the opposite side of the reference line KL in the protruding direction Y. In this embodiment, the discharge opening 45a is located downstream of the reference line KL in the rotation direction R of the doffer roller 15. Also, a straight line that passes through the intersection P and is perpendicular to the protrusion reference line L2 is defined as an orthogonal line L3 with respect to the protrusion reference line L2. The discharge opening 45a is located on the opposite side of the orthogonal line L3 in the protruding direction Y. In other words, the discharge opening 45a is located downstream of the orthogonal line L3 in the rotation direction R of the doffer roller 15.

[0046] When viewing the doffer roller 15 in the axial direction, the smaller of the angles formed between the discharge port reference line L1 and the tangent line CL is defined as the intersection angle θ. The discharge ports 45a are positioned so that the intersection angle θ is less than 45 degrees. When the intersection angle θ is 45 degrees or greater, the discharge port reference line L1 crosses the orthogonal line L3 and approaches a state where it is aligned with the reference line KL and, ultimately, the protrusion reference line L2. When the discharge port reference line L1 is aligned with the protrusion reference line L2, the air discharged from the discharge ports 45a is blown in the opposite direction of the protrusion direction Y, that is, from the tip end toward the base end of the protrusion 21. This undesirably pushes the fiber waste D deeper into the gap 22.

[0047] Therefore, the crossing angle θ is set to less than 45 degrees so that the fiber debris D can be swept out from the gaps 22 between the protrusions 21. The crossing angle θ can be changed as appropriate depending on the inclination angle, curvature, etc. of the protrusions 21. The crossing angle θ is adjusted to an angle such that the air discharged from the discharge ports 45a sweeps the fiber debris D from the base end side to the tip end side of the protrusions 21 without forcing it deep into the gaps 22. The crossing angle θ is preferably set to 10 degrees to 35 degrees, and more preferably 25 degrees to 30 degrees.

[0048] The air discharged from the discharge port 45a is blown onto the protrusions 21 facing the discharge port 45a. Because the doffer roller 15 is rotating, the air discharged from the discharge port 45a is blown onto the protrusions 21 passing downstream of the intersection P in the rotation direction R. The air blown onto the protrusions 21 then flows along the tips of the protrusions 21 toward the upstream side in the rotation direction R. In other words, the air blown onto the protrusions 21 flows along the protrusions 21 from the base end to the tip of the protrusions 21 in the protruding direction Y of the protrusions 21. The air flowing along each protrusion 21 flows along the protrusions 21 so as to enter the gaps 22, and fiber waste D is swept out from the gaps 22 between the protrusions 21.

[0049] <Location of suction device> The suction device 31 is disposed at a position where the suction port 32a opens on an extension of the projection reference line L2 relative to the opposing projection 21. In this embodiment, the suction device 31 is disposed upstream of the discharge device 41 in the rotation direction R of the doffer roller 15. Furthermore, for most of all the projections 21 facing the suction port 32a, the projection reference line L2 extends toward the suction port 32a.

[0050] [Operation of the embodiment] Next, the operation of the embodiment will be described. Each air duct 43 of the discharge device 41 discharges air toward the doffer roller 15. The suction device 31 also sucks the vicinity of the doffer roller 15 through the suction port 32a.

[0051] The air discharged from the discharge port 45a is discharged in the discharge direction Z toward the doffer roller 15. The leakage suppression member 60 suppresses the air from leaking downstream of the suction port 32a in the discharge direction Z, in other words, upstream of the suction port 32a in the rotation direction R. The air is also blown over the entire axial direction of the roller body 19 of the doffer roller 15, and onto the multiple protrusions 21 aligned in the axial direction of the roller body 19. The air enters the gaps 22 between the protrusions 21 and blows out from both sides in the thickness direction of the card wire 20, and flows along the protrusions 21 in the protrusion direction Y and blows out in a direction away from the doffer roller 15.

[0052] 5, the fiber debris D that has entered the gap 22 is swept out of the gap 22 by the air. The fiber debris D swept out of the gap 22 is sucked into the suction unit main body 32 through the suction port 32a by the suction device 31. As a result, the fiber debris D remaining in the gap 22 between the protrusions 21 is removed from the doffer roller 15.

[0053] [Effects of the embodiment] According to the above embodiment, the following effects can be obtained. (1) The discharge port 45a is disposed on the opposite side of the reference line KL in the protrusion direction Y of the protrusions 21. Therefore, the air discharged from the discharge port 45a flows along the protrusions 21 in the protrusion direction Y. That is, the air flows along the protrusions 21 from the base end of the protrusions 21 to the tip end of the protrusions 21. As a result, the carding machine 10 can efficiently sweep out the fiber debris D that has entered the gaps 22 between the protrusions 21 from the gaps 22 using the discharge device 41, and can prevent the fiber debris D from being pushed deep into the gaps 22. The fiber debris D swept out from the gaps 22 is sucked by the suction port 32a of the suction device 31. As a result, the carding machine 10 can efficiently remove the fiber debris D that has entered the gaps 22. Furthermore, after removing the web W from the doffer roller 15, the carding machine 10 removes the fiber debris D remaining on the doffer roller 15 using the fiber removing device 30. Therefore, the adhesion of fiber waste D to the new web W wound around the doffer roller 15 can be suppressed.

[0054] (2) The discharge port 45a is positioned at a position where the crossing angle θ is less than 45 degrees. Therefore, the air discharged from the discharge port 45a flows more efficiently in the protruding direction Y of the protrusions 21. As a result, the carding machine 10 can use the discharge device 41 to efficiently sweep out the fiber scraps D that have entered the gaps 22 between the protrusions 21 from the gaps 22, and can prevent the fiber scraps D from being pushed deep into the gaps 22.

[0055] (3) Air is blown from the discharge device 41 onto the rotating doffer roller 15 to sweep out the fiber waste D from the gap 22, and the swept-out fiber waste D can be sucked in by the suction device 31. That is, the carding machine 10 can remove the fiber waste D that has entered the gap 22 by the fiber removing device 30 while performing carding. Therefore, the removal of the fiber waste D that has entered the gap 22 can be performed without stopping the carding machine 10, and a decrease in the productivity of the web W can be suppressed.

[0056] (4) The carding machine 10 can sweep out the fiber debris D from the gap 22 by using the air discharged from the discharge port 45a of the discharge device 41. Therefore, the carding machine 10 can sweep out and remove even fibers F with a small diameter from the gap 22.

[0057] (5) The suction port 32a of the suction unit main body 32 is located upstream of the discharge port 45a in the discharge direction Z. The suction port 32a opens on an extension of the protrusion reference line L2, which extends in the protrusion direction Y of the protrusions 21. Therefore, the fiber debris D that is swept out from between the protrusions 21 and flows in the protrusion direction Y together with the air is efficiently sucked into the suction device 31 through the suction port 32a. In other words, when the fiber debris D is removed by the fiber removal device 30, the carding machine 10 can prevent the protrusions 21 from interfering with the suction of the fiber debris D into the suction port 32a.

[0058] (6) The suction unit body 32 is disposed over the entire axial direction of the roller body 19 of the doffer roller 15. The suction ports 32a are open toward the surface 19a over the entire axial direction of the roller body 19 of the doffer roller 15. Therefore, the carding machine 10 can suck the fiber waste D from the entire axial direction of the doffer roller 15 using the fiber removing device 30. Therefore, the carding machine 10 can remove the fiber waste D from the entire axial direction of the doffer roller 15.

[0059] (7) The discharge device 41 has a plurality of discharge ports 45a. The plurality of discharge ports 45a are arranged over the entire axial direction of the roller body 19 of the doffer roller 15. Therefore, the air discharged from the discharge device 41 is blown over the entire axial direction of the doffer roller 15. As a result, the air is blown against the card wire 20 wound around the doffer roller 15 over the entire axial direction. Therefore, the carding machine 10 can use the discharge device 41 to sweep out the fiber waste D from the entire axial direction of the doffer roller 15. Therefore, the carding machine 10 can remove the fiber waste D from the entire axial direction of the doffer roller 15.

[0060] (8) The suction device 31 has a leakage suppression member 60 located downstream of the suction port 32a in the discharge direction Z. The leakage suppression member 60 is located between the opening edge of the suction port 32a and the tip of the protrusion 21 of the doffer roller 15. In other words, the leakage suppression member 60 prevents air that has flowed into the vicinity of the suction port 32a from leaking downstream of the suction port 32a in the discharge direction Z. As a result, a decrease in the suction efficiency of the suction port 32a can be suppressed, and the carding machine 10 can efficiently suck the fiber waste D into the suction unit main body 32.

[0061] (9) The suction device 31 has a leakage suppression member 60 disposed downstream of the suction port 32a in the discharge direction Z. The leakage suppression member 60 can suppress the air discharged from the discharge port 45a from leaking downstream of the suction port 32a in the discharge direction Z. As a result, the carding machine 10 can suppress air from being blown near the comb 18, thereby suppressing air from being blown onto the web W.

[0062] [Example of change] This embodiment can be modified as follows: This embodiment and the following modifications can be combined and implemented within the scope of technical compatibility.

[0063] The outlet 45a may be positioned at a position where the crossing angle θ is 45 degrees or more, as long as it is positioned on the opposite side of the protrusion direction Y from the reference line KL that passes through the intersection P between the outlet reference line L1 and the base end circle C1.

[0064] The leakage suppression member 60 may be omitted. As long as the fiber waste D can be sucked through the suction port 32a, the suction device 31 does not need to be disposed at a position where the suction port 32a opens on the extension of the projection reference line L2.

[0065] As shown by the solid line in Figure 6, the fiber removing device 30 may be disposed so as to face the surface 19a of the roller body 19 of the stay-in roller 13. Specifically, of the multiple rollers, the stay-in roller 13 that scrapes the fiber agglomerates B from the feed roller 12 with its protrusions 21 is defined as the source roller, and the cylinder roller 14 to which the fiber agglomerates B are transferred from the stay-in roller 13 is defined as the destination roller. The location where the fiber agglomerates B are peeled from the stay-in roller 13 to transfer them to the cylinder roller 14 is defined as a peeling location H. The fiber removing device 30 is disposed on the stay-in roller 13 downstream of the peeling location H in the rotation direction R of the stay-in roller 13.

[0066] As shown by the two-dot chain line in FIG. 6 , the fiber removal device 30 may be disposed to face the surface 19a of the roller body 19 of the cylinder roller 14. Specifically, among the multiple rollers, the cylinder roller 14 that scrapes the fiber agglomerates B from the taker-in roller 13 with its protrusions 21 is defined as the source roller, and the doffer roller 15 to which the fiber agglomerates B are transferred from the cylinder roller 14 is defined as the destination roller. A separation location H is defined as a location where the fiber agglomerates B are peeled from the cylinder roller 14 to transfer the fiber agglomerates B from the cylinder roller 14 to the doffer roller 15. The fiber removal device 30 is disposed on the cylinder roller 14 downstream of the separation location H in the rotation direction R of the cylinder roller 14. The discharge port 45a is disposed on the opposite side of the reference line KL in the protruding direction Y. In this embodiment, the discharge port 45a is disposed upstream of the reference line KL in the rotation direction R of the cylinder roller 14.

[0067] The protrusions 21 provided on each of the rollers 12 to 17 do not have to be provided by the card wire 20. For example, the protrusions 21 may be provided by projecting directly from the roller body 19 of each of the rollers 12 to 17.

[0068] The air duct 43 connected to the collecting duct 42 does not have to be provided in plural, and may be a single duct extending longitudinally in the axial direction of the doffer roller 15 . Examples of the small diameter fibers in the fiber mass B include carbon fibers, acrylic fibers, nylon fibers, polyester fibers, aramid fibers, poly-p-phenylene benzobisoxazole fibers, ultra-high molecular weight polyethylene fibers, glass fibers, and ceramic fibers.

[0069] [Note] The technical ideas that can be understood from the above-described embodiment and modifications will be described below. <Appendix 1> A carding machine has a plurality of rollers each having a plurality of protrusions protruding from the surface of a roller body and arranged at intervals in the rotation direction of the roller body, and transfers a fiber agglomerate while passing the fiber agglomerate between the rollers, and defibrates and cardes the fiber agglomerate with the protrusions. Among the plurality of rollers, a roller that scrapes off the fiber agglomerate with the protrusions is defined as a transfer source roller, and a location where the fiber agglomerate is peeled off from the transfer source roller when the fiber agglomerate is transferred from the transfer source roller to a transfer destination is defined as a peeling location. a discharge device having a discharge port that discharges air toward the source roller, and a suction device having a suction port that sucks up fiber debris swept out from between the protrusions by the air, wherein, in the source roller, a circle formed by connecting the base ends of a plurality of the protrusions is defined as a base circle, a straight line perpendicular to the tangent to the base circle is defined as a reference line, a plane on which the discharge port opens is defined as an imaginary plane, and a straight line perpendicular to the imaginary plane is defined as a discharge port reference line, and the discharge port is located on the opposite side of the reference line that passes through the intersection of the discharge port reference line and the base circle in the direction in which the protrusions protrude.

[0070] <Appendix 2> A card machine as described in <Appendix 1>, wherein, when a straight line passing through the intersection and extending in the protruding direction of the protrusion is defined as a protrusion reference line, the suction device is positioned at a position where the suction port opens on an extension of the protrusion reference line.

[0071] <Appendix 3> The carding machine according to <Appendix 1> or <Appendix 2>, wherein the source roller is a doffer roller, and the destination roller is a conveying roller that conveys a web produced from the fiber mass.

[0072] <Appendix 4> A card machine described in any one of <Appendix 1> to <Appendix 3>, wherein the suction device has a leakage suppression member arranged downstream of the suction port in the direction in which the air is discharged from the discharge port, and the leakage suppression member is interposed between the suction port and the tip of the protrusion of the source roller. [Explanation of symbols]

[0073] B...fiber mass, C1...base circle, CL...tangent, H...peeling point, KL...reference line, L1...discharge outlet reference line, L2...protrusion reference line, P...intersection, R...rotation direction, S...virtual plane, Y...protrusion direction, Z...discharge direction, 10...carding machine, 12...feed roller, 13...taker-in roller, 14...cylinder roller, 15...doffer roller as source roller, 16...walker roller, 17...stripper roller, 19...roller body, 19a...surface, 21...protrusion, 23...conveyor roller as destination, 30...fiber removal device, 31...suction device, 32a...suction port, 41...discharge device, 45a...discharge port, 60...leakage suppression member.

Claims

1. A carding machine comprising a plurality of rollers each having a plurality of protrusions protruding from the surface of a roller body and arranged at intervals in a rotation direction of the roller body, the carding machine transferring a fiber agglomerate while transferring the fiber agglomerate between the rollers, and defibrating and carding the fiber agglomerate with the protrusions, Among the plurality of rollers, the roller that scrapes off the fiber clump with the protrusion is defined as a transfer source roller, and the location where the fiber clump is peeled off from the transfer source roller when the fiber clump is transferred from the transfer source roller to the transfer destination is defined as a peeling location. a discharge device disposed on the transfer source roller downstream of the separation location in the rotation direction, the discharge device having a discharge port for discharging air toward the transfer source roller; a suction device having a suction port that sucks in the fiber waste swept out from between the protrusions by the air, In the source roller, a circle formed by connecting the base ends of the plurality of protrusions is defined as a base circle, and a straight line perpendicular to a tangent to the base circle is defined as a reference line, When the surface on which the ejection port opens is defined as a virtual plane and a straight line perpendicular to the virtual plane is defined as an ejection port reference line, The card machine is characterized in that the discharge port is disposed on the opposite side of the reference line passing through the intersection of the discharge port reference line and the base end circle in the protruding direction of the protrusion.

2. 2. The card machine according to claim 1, wherein the suction device is positioned so that the suction port opens on an extension of the protrusion reference line, where the protrusion reference line is a straight line that passes through the intersection and is parallel to the protruding direction of the protrusion.

3. 3. A carding machine according to claim 1, wherein the source roller is a doffer roller, and the destination roller is a conveying roller that conveys a web made from the fiber mass.

4. 3. A card machine according to claim 1 or claim 2, wherein the suction device has a leakage suppression member arranged downstream of the suction port in the direction of the air being discharged from the discharge port, and the leakage suppression member is interposed between the suction port and the tip of the protrusion of the source roller.

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