JP2014234574A - Nonwoven fabric manufacturing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a nonwoven fabric manufacturing device capable of saving capital investment and obtaining nonwoven fabrics in different widths without reducing productivity as well as stably and smoothly rotating a die without generating soldering.SOLUTION: A resin inlet 21 has a swollen part 41 that comprises a cylindrical part 4a (a joint pipe 40) and an outer peripheral surface 41a with increased diameter at an end of the cylindrical part 4a. A resin supplying inlet 31 has a support material 7 with a concavity 32 for coaxially receiving the swollen part 41. A cylindrical support part 70 with an internal peripheral surface that relatively rotatably supports the outer peripheral surface of the cylindrical part 4a connected to an inner surface of the concavity 32 is placed at an end side of the support material 7.

Description

  The present invention relates to a non-woven fabric manufacturing apparatus suitable for a melt blown non-woven fabric manufacturing apparatus for manufacturing a non-woven fabric by drawing a thermoplastic resin extruded from a die having a nozzle array into a fiber shape.

  The melt-blown nonwoven fabric manufacturing method is widely used mainly for manufacturing filter materials as a technique for manufacturing a nonwoven fabric of fine fibers of 1 μm or less to 10 to several μm. In this technique, for example, a nozzle array is formed by accumulating a molten resin flow discharged from a nozzle array in which fine holes having a diameter of 0.15 mm in a straight line are arranged at a fine pitch on a conveyer that is moved by a high-speed air stream. This is to obtain a non-woven fabric having a width equal to the length of (see, for example, Patent Documents 1 to 3). FIG. 1 is a schematic diagram of the melt blown method, in which a molten resin flow 10 coming out from a tip nozzle row 20 of a die 2 is accumulated on a conveyor 11 that runs in the direction of an arrow to form a nonwoven fabric 12.

  The most important device for carrying out the present technology is a nozzle. In particular, in order to obtain a fine fiber, a nozzle having a nozzle row having a hole having a diameter of 0.15 mm or less takes several months to process and has a length of 1 m. Above this, the price will be very high. Dies and nozzles are even more expensive. For example, when trying to obtain a non-woven fabric having a width of 0.9 m when a non-woven fabric having a width of 1 m is manufactured, the formed non-woven fabric having a width of 1 m is disposed after being cut by a width of 0.1 m. In order to avoid this problem, if a die nozzle capable of producing a non-woven fabric having a width of 0.9 m is prepared, the above-described high cost is required. Furthermore, such a die replacement operation increases the time during which the machine is paused, thereby reducing productivity.

  With respect to such a problem, the present inventor provided the die so that the angle can be changed in a direction inclined with respect to the width direction of the nonwoven fabric web orthogonal to the moving direction of the conveyor belt, and the width dimension of the formed web is set as described above. An application has been filed for an invention that can be adjusted to a size according to the angle of the die (Japanese Patent Application No. 2012-126572). In this prior invention, as shown in FIG. 2, the die 2 is arranged in such a manner that the nozzle row 20 is arranged at 90 degrees with respect to the traveling direction of the conveyor 11 as shown in FIG. As shown in (b), the width of the nonwoven fabric 12 becomes W cos θ by rotating it by an angle θ. If θ is increased to less than 90 degrees, the width of the nonwoven fabric can be adjusted to be small. This saves capital investment and makes it possible to obtain nonwoven fabrics with different widths without reducing productivity.

  As shown in FIGS. 10 and 11, the present inventor, as means for rotating the die in the preceding invention, attaches the resin inlet portion of the die and the resin supply port portion of the resin supply means. A structure in which the structure is a butt connection structure between flanges, the flanges are tightened by bolting or quick coupling, and the bolt is loosened or the quick joint part is loosened when the die is rotated is illustrated. However, in the case of such a structure, if the flange connection is loosened, a gap is formed on the joint surface, so that it is necessary to expel the internal resin before loosening. These operations require a considerable amount of time, and as a result, a certain limit is imposed on the improvement of productivity.

  Therefore, the present inventor can further rotate without causing a gap in the joint surface, without having to expel the internal resin in advance before changing the angle, as a mounting structure that can be quickly operated, As shown in FIG. 12, one of the resin inlet 21 and the resin supply port 31 is provided with a bulging portion 41 having an outer peripheral surface that expands toward the tip, and contracts toward the tip. Invented a structure in which a concave portion 32 having an inner peripheral surface that is diametrically provided is coupled so as to hold the bulging portion 41 so that the resin supply port portion 31 rotates relative to the resin inflow port portion 21 (Japanese Patent Application No. 2012). -208059). The feature of the present invention is that the bulging part 41 and the inner peripheral surface of the concave part 32 are joined together to prevent resin leakage while being rotatable, and a sealing member for preventing resin leakage is not required.

  However, in this mounting structure, for example, when a rotational force is applied from one end of the die to rotate the die, the die 2 and the resin inflow port portion with respect to the axis of the resin supply port portion 31 as shown in FIG. 21 may be inclined, and the upper surface end portion of the bulging portion 41 may locally contact the flange 51 or the inner peripheral surface 32b of the recess to cause seizure. The die and the resin inflow port 21 may be rotated by applying an even force so that the die and the resin inflow port 21 do not tilt. It also reduces the degree of freedom.

JP-A-2-289107 Japanese Patent Laid-Open No. 9-49111 JP 2002-38326 A

  Therefore, in view of the above-mentioned situation, the present invention is to solve the problem that it is possible to save the capital investment, obtain the nonwoven fabrics having different widths without lowering the productivity, and cause the die to be burned. It is in the point which provides the nonwoven fabric manufacturing apparatus which can be rotated more stably smoothly.

  In order to solve the above-mentioned problems, the present invention provides a nonwoven fabric manufacturing method in which a resin inlet port of a die having a nozzle row from which a thermoplastic resin is extruded is rotatably attached to a resin supply port of a resin supply means. In the apparatus, one of the resin inflow port portion and the resin supply port portion is constituted by a cylindrical portion and a bulging portion having an outer peripheral surface enlarged in diameter at the tip thereof, and on the other side, the bulging portion is disposed inside. A holding body having a concave portion that is received and is relatively rotatable in the circumferential direction and locked so as not to be separated in the axial direction is provided, and an outer circumference of the one cylindrical portion is continuously provided on a front end side portion of the holding body. A cylindrical support portion having an inner peripheral surface for supporting the surface in a relatively rotatable manner is provided, and the resin inlet portion of the die is connected to the resin supply port portion of the resin supply means by a support structure including the bulging portion and the holding body. Non-woven, characterized by being pivotably supported It was constructed an apparatus for manufacturing.

  Here, it is preferable that a bearing member is interposed between the outer peripheral surface of the one cylindrical portion and the inner peripheral surface of the other cylindrical support portion.

  Further, it is preferable that a bearing member is interposed between an outer surface facing the proximal end side of the one bulging portion and an opposing inner surface facing the proximal end side of the concave portion of the other holding body.

  Preferably, a seal member surrounding the resin flow path is disposed between the outer surface facing the tip side of the one bulging portion and the opposing inner surface facing the tip side of the concave portion of the other holding body. .

  Further, the cylindrical portion is constituted by a joining pipe that constitutes the resin inflow port portion, or a resin supply pipe that constitutes the resin supply port portion, and the bulging portion is an outer periphery of a distal end portion of the joining pipe, or What was provided in the outer periphery of the front-end | tip part of the said resin supply pipe | tube is preferable.

  Further, the holding body includes a flange formed on an outer periphery of a distal end portion of a resin supply pipe constituting the resin supply port portion or an outer periphery of a distal end portion of a joining pipe constituting the resin inlet portion, and a distal end of the flange What comprises the holding | maintenance cylinder which protrudes in the surface side and has the said recessed part and the said cylindrical support part continuous with this is preferable.

  Further, the outer peripheral surface of the bulging portion is a surface parallel to the outer peripheral surface of the cylindrical portion, and the holding body has a concave portion having an inner peripheral surface parallel to the outer peripheral surface of the bulging portion; And a cylindrical support portion having an inner peripheral surface parallel to the outer peripheral surface of the cylindrical portion continuously reduced in a step shape.

  According to the present invention as described above, by attaching the resin inlet portion of the die having the nozzle row from which the thermoplastic resin is pushed out to the resin supply port portion of the resin supply means, the same die can be used. It is possible to manufacture non-woven fabrics of various widths, save time and cost for capital investment, prepare a variety of dies and replace them according to their dimensions, and handle fine differences in dimensions. This eliminates the need for dimensional alignment and can significantly reduce the manufacturing cost.

  Further, one of the resin inflow port and the resin supply port is constituted by a cylindrical portion and a bulging portion having an outer peripheral surface enlarged in diameter at the tip thereof, and on the other side, the bulging portion is received in the circumferential direction. Since it is provided with a holding body having a recess that can be relatively rotated and cannot be separated in the axial direction, it is not necessary to expel the resin in advance before changing the angle, and the work can be performed quickly. Non-woven fabrics with different widths can be obtained without reducing productivity. Furthermore, since the cylindrical support portion having an inner peripheral surface that supports the outer peripheral surface of one cylindrical portion so as to be relatively rotatable continuously to the inner surface of the concave portion is provided at the front end side portion of the holding body, when the die rotates The cylindrical support portion and the cylindrical portion support each other and prevent the die from tilting. Therefore, for example, even if a rotational force is applied from one end of the die, the axes of the die and the resin inflow port portion are not inclined with respect to the resin supply port portion, and can be smoothly rotated in a stable posture. It is possible to avoid the possibility that the upper end portion of the bulging portion is locally contacted to cause seizure, and it is possible to provide an apparatus that is easy to use and maintains the degree of design freedom.

  Moreover, since the bearing member is interposed between the outer peripheral surface of one cylindrical part and the inner peripheral surface of the other cylindrical support part, it can rotate more stably and smoothly.

  In addition, since the bearing member is interposed between the outer surface facing the base end side of one bulging portion and the opposing inner surface facing the base end side of the concave portion of the other holding body, a die having a large weight is more It can be rotated stably and smoothly.

  In addition, since a sealing member surrounding the resin flow path is disposed between the outer surface facing the tip side of one bulging portion and the opposing inner surface facing the tip side of the concave portion of the other holding body, There is no need to provide a sealing function by directly contacting the recessed portion and the concave portion of the holding body, the degree of freedom in design is increased, and it is possible to simplify the structure of the bulging portion and the holding body and reduce the manufacturing cost. Become.

  Further, the cylindrical part is constituted by a joining pipe constituting the resin inlet part or a resin supply pipe constituting the resin supply port part, and the bulging part is provided at the outer periphery of the tip part of the joining pipe or the tip of the resin supply pipe. Since it is provided on the outer periphery of the part, a rational structure is obtained, the number of parts can be reduced, and the cost can be reduced.

  The holding body includes a flange formed on an outer periphery of a distal end portion of a resin supply pipe constituting the resin supply port portion or an outer periphery of a distal end portion of a joining pipe constituting the resin inlet portion, and a distal end surface side of the flange And the holding cylinder having the concave portion and the cylindrical support portion continuous therewith, the assembly is easy, the degree of freedom of design is improved, and the manufacturing cost can be reduced.

  Further, the outer peripheral surface of the bulging portion is a surface parallel to the outer peripheral surface of the cylindrical portion, and the holding body has a concave portion having an inner peripheral surface parallel to the outer peripheral surface of the bulging portion; Since the cylindrical support portion has an inner peripheral surface parallel to the outer peripheral surface of the cylindrical portion that is continuously reduced in a stepped shape, the structure is simple, high-precision machining is not required, and the cost is lower. Can be achieved.

The schematic diagram which shows the melt blown method. The schematic diagram which shows a mode that the die | dye was provided so that angle change was possible in this invention and the width dimension of the nonwoven fabric was adjustable. The schematic diagram which shows the connection of the resin inflow port part of die | dye, and the resin supply port part of a resin supply means. The longitudinal cross-sectional view which shows the principal part of the support structure which consists of a bulging part and a recessed part. The longitudinal cross-sectional view which similarly shows the modification of a support structure. Similarly, the longitudinal cross-sectional view which shows the other modification of a support structure. The schematic diagram which looked at the nonwoven fabric manufacturing apparatus provided with the auxiliary mechanism which rotates die | dye from the front. The schematic diagram seen from the side. The schematic diagram which shows the other example of the nonwoven fabric manufacturing apparatus provided with the auxiliary mechanism which rotates die | dye. Explanatory drawing which shows the example of the structure which rotates the die | dye in prior invention. Explanatory drawing which similarly shows the other example of the structure which rotates the die | dye in a prior invention. The longitudinal cross-sectional view which shows the principal part of the support structure which consists of a bulging part and recessed part in another prior invention. Explanatory drawing which similarly shows the state in which the axial center inclined in other prior invention.

  Next, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 3 is a schematic diagram showing the connection between the resin inlet 21 of the die 2 and the resin inlet 31 of the resin supply means 3 according to the nonwoven fabric manufacturing apparatus 1 of the present invention, and constitutes the resin inlet 21. The resin inlet 21 of the die 2 can be rotated with respect to the resin supply port 31 of the resin supply means 3 at the tip of the bonding tube 40 and the resin supply tube 50 constituting the resin supply port 31. It has a support structure A that supports it.

  The die 2 is a T-die for uniformly distributing the molten polymer toward the nozzle array on the lower surface side where the molten polymer is extruded from the resin inlet 21, and air slits for blowing hot air are provided on both sides of the nozzle array. The spin head is configured. The present invention is not limited to the die having such a structure. A large number of pores in the nozzle row are arranged in a direction perpendicular to the cross section of the die 2, and hot air slits (blowing ports) are provided in parallel to the nozzle row on both sides of the pores. The nozzle row 20 may be a single row or a plurality of rows.

  The resin supply means 3 is not particularly limited, an extruder that melts and extrudes a polymer (thermoplastic resin), a filter that removes foreign matters, a gear pump that continuously sends a fixed amount of molten polymer to the die 2, and A known one having a resin supply port 31 connected to the resin inlet 21 of the die 2 at the end can be applied.

  As shown in FIG. 4, the support structure A is provided with a bulging portion 41 having a cylindrical portion 4 a (joining tube 40) and an outer peripheral surface 41 a having an enlarged diameter at the tip of the resin inlet 21, and a resin supply port A holding body 7 having a concave portion 32 for receiving the bulging portion 41 coaxially is provided in the portion 31, and the outer peripheral surface of the cylindrical portion 4 a can be rotated relative to the inner surface of the concave portion 32 at a position on the distal end side of the holding body 7. It is the structure where the cylindrical support part 70 which has the internal peripheral surface supported by is provided. The cylindrical part 4a is comprised from the joining pipe 40 which comprises the resin inflow port part 21, and the bulging part 41 is integrally provided in the outer periphery of the front-end | tip part of this joining pipe.

  The holding body 7 includes a flange 51 formed on the outer periphery of the distal end portion of the resin supply pipe 50 that constitutes the resin supply port portion 31, and a protruding portion on the distal end surface side of the flange 51. And a holding cylinder 52 having a cylindrical support portion 70. The holding cylinder 52 is a metal holding metal fitting, and a groove 52c that receives and fits the flange 51 is formed on the surface on the base end side, and the through hole 52d corresponding to the bolt insertion hole 51d of the flange 51 has a shaft. It is provided in communication with the direction.

  A bearing member 71 is interposed between the outer peripheral surface of the cylindrical portion 4 a and the inner peripheral surface 70 a of the cylindrical support portion 70. A bearing member 72 is also interposed between the outer surface 41 c facing the base end side of the bulging portion 41 and the inner surface 32 c of the concave portion 32 facing the base end side. Since a sufficient pressure-bonding force acts on this portion based on the weight of the die, the presence of such a bearing member 72 can surely prevent seizure. In the present embodiment, the bearing members 71 and 72 are constituted by one member, but may be constituted by different members. The bearing members 71 and 72 are preferably bushes (sliding bearings) made of a material (metal or the like) that is heat resistant and difficult to seize.

  A seal member 73 surrounding the resin flow path is disposed between the outer surface 41d facing the distal end side of the bulging portion 41 and the inner surface 32d facing the distal end side of the concave portion 32 (the distal end surface of the flange 51). Yes. In the present embodiment, an annular groove 41e is formed on the outer surface 41d on the bulging portion 41 side, and the annular seal member 73 is engaged with the annular groove 41e and mounted, but the inner surface 32d on the concave portion 32 side is sealed. Of course, a similar annular groove for mounting the member 73 may be provided.

  The molten resin flows from the resin supply port 31 to the resin inflow port 21 (joining pipe 40), but is not leaked to the outside by the seal member 73. The sealing member 73 does not change its sealing effect even if the resin inlet 21 rotates with respect to the resin supply port 31. As shown in FIG. 4B, the seal member 73 is called a C-ring and is made of metal such as Inconel and can withstand a high temperature of several hundred degrees. In the figure, DA is the outer diameter of the C-ring, and the C-ring is fitted into an annular groove 41e having an outer diameter (outer inner diameter) D, a depth G, and a width W.

  The bolt insertion hole 51d and the through hole are mounted in a state where the holding cylinder 52 having the bearing members 71 and 72 mounted on the inner side is mounted on the outer peripheral portion of the bulging portion 41 and the cylindrical portion 4a having the sealing member 73 mounted on the outer surface. By fixing to the flange 51 with the bolt 33 and the washer 34 and the nut 35 penetrating through 52d, the bulging portion 41 is locked in the recess 32 formed so as not to be separated, and the bearing member 71 is supported by the cylindrical support portion 70. Is held in a stable posture with the outer peripheral surface of the cylindrical portion 4a supported.

  In the present embodiment, the outer peripheral surface 41a of the bulging portion 41 is a surface parallel to the outer peripheral surface of the cylindrical portion 4a, is configured in a flange shape, and the concave portion 32 is an inner surface parallel to the outer peripheral surface 41a of the bulging portion 41. It has a peripheral surface 32b. The cylindrical support portion 70 has an inner peripheral surface 70a that is continuous with the concave portion 32 and has a stepped diameter and is parallel to the outer peripheral surface of the cylindrical portion 4a. Since the present invention has a configuration in which the cylindrical portion 4a is supported by the cylindrical support portion 70 as described above and can be rotated in a stable posture without causing shaft shake as a whole, the outer peripheral surface 41a of the bulging portion 41 is provided. And the inner peripheral surface 32b of the recess 32 can be provided with a gap. Therefore, the resin inlet port 21 and the resin supply port portion 31 are assembled. Specifically, the holding cylinder 52 is connected to the bulging portion 41 and the cylindrical portion 4a. It is easy to assemble when mounted on the outer peripheral part.

  FIG. 5 shows a modified example in which the bulging portion 41 has a structure having an outer peripheral surface 41 a that expands toward the tip of the resin inflow port portion 21. The concave portion 32 has an inner peripheral surface 32b that decreases in diameter toward the tip, receives the bulging portion 41 inside, and stops the outer peripheral surface 41a of the bulging portion 41 against the inner peripheral surface 32b. The part 41 is locked so as to be relatively rotatable in the circumferential direction and not to be separated in the axial direction. The outer peripheral surface 41a of the bulging portion 41 is a conical surface, and the inner peripheral surface 32b of the recess 32 is an opposing conical hole surface parallel to the outer peripheral surface 41a. As a result, the outer peripheral surface 41a and the inner peripheral surface 32b are joined in close contact with each other over the entire periphery, and a sufficient crimping force acts between the outer peripheral surface 41a and the inner peripheral surface 32b based on the weight of the die. Therefore, even if the resin flows into the gap 13 between the front end surface of the bulging portion 41 and the front end surface of the flange 51, the resin does not leak out. Therefore, the seal member 73 can be omitted.

  The outer peripheral surface that expands toward the end is not limited to the conical surface that expands at a constant rate along the axial direction as described above, but may be a curved surface whose diameter expansion rate changes, for example, an outer convex spherical surface. Similarly, if the inner peripheral surface of the concave portion is also an inner peripheral surface that is reduced in diameter toward the tip, a curved surface with a reduced diameter ratio, for example, an inner convex shape, other than the conical hole surface that is reduced in diameter at a certain rate. It may be a spherical surface. Since it is difficult to obtain machining accuracy for curved surfaces other than the conical surface or the conical hole surface, if such a curved surface is adopted, the outer peripheral surface of the bulging portion is not the curved surface parallel to each other, but the inner peripheral surface of the recess It is preferable to set the curvature along the axial direction to be smaller than that, and only the outer peripheral surface of the bulging portion is a curved surface other than the conical surface, for example, an outer convex spherical surface, and the inner peripheral surface of the concave portion has a reduced diameter ratio. More preferably, it is a constant conical hole surface.

  In the above embodiment, the support structure A is a structure in which the bulging portion 41 is provided in the resin inlet portion 21 and the holding body 7 is provided in the resin supply port portion 31. However, as shown in FIG. A structure in which a similar holding body 7 is provided in the resin inlet 21 and a similar bulging portion 41 is provided in the resin supply port 31 may be employed. In this case, as shown in FIG. 6, the die-side holding body 7 cannot be separated in the axial direction on the outer peripheral surface of the bulging portion 41 on the resin supply means 3 side and the cylindrical portion 3a (resin supply pipe 50), and in the circumferential direction. It is supported so as to be rotatable, and is also supported in a stable posture in which the axis does not tilt when the die is rotated.

  Since the die 2 is generally heavy, it may not be held by the support structure A alone. Therefore, as shown in FIGS. 7 and 8, it is preferable to separately support the frame from the upper frame 14 with a lifting tool 15. The hanger 15 is supported by the frame 14 via a rotatable hanger support device 16 and is configured to be able to rotate in conjunction with the rotation of the die 2.

  In addition, the die 2 can be manually turned by a necessary angle due to the structure of the support structure A, but the temperature of the die 2 is as high as 200 to 350 degrees, and the weight of the die 2 is also high. When is large, considerable force is also required. Therefore, it is preferable to perform mechanically for safety. As an auxiliary mechanism for rotating the die 2 as described above, a mechanism for rotating the die 2 from below will be described first.

  As shown in FIGS. 7 and 8, the rotary positioning device 6 that engages with the die 2 and rotates by a predetermined angle is set below the die 2. The rotational positioning device 6 includes an engaging member 61 in which a pin 61b that engages with a pin hole 2a provided in the die 2 projects from the upper surface, and a rotary table 62a in which the engaging member 61 is fixed to the upper surface. The rotating table 62 is configured to rotate the rotating table at an arbitrary angle, and the lifting device 63 is configured to move the rotating device 62 up and down together with the engaging member 61.

  When the die 2 is rotated using the rotational positioning device 6, first, the rotation center axis of the rotary table 62 a and the rotation center axis of the support structure of the die 2 coincide with each other in the engaged state with the die 2. The rotating device 62 is rotated so that the angular position of the pin hole 2a of the die 2 and the angular position of the pin 61b of the engaging member 61 coincide with each other and engage with each other. stop. Next, the rotating device 62 is lifted together with the engaging member 61 by the lifting device 63, and the pin hole 2a and the pin 61b are engaged. Next, the rotating device 62 is rotated by a necessary angle, and the die 2 is rotated and stopped via the pin 61b of the engaging member 61. Then, the rotating device 62 is lowered by the lifting device 63, and the rotational positioning device 6 is removed or retracted from below the die 2.

  What is necessary is just to fix the rotational positioning apparatus 6 to the downward direction of the die | dye 2 with an appropriate method, for example to the mount frame of a conveyor. The rotating mechanism of the rotating device 62 and the lifting mechanism of the lifting device 63 may be manually operated or driven by a motor or the like. As the rotation device 62, for example, a rotary index can be applied. In this example, the die 2 is rotatably supported via the above-described hanger 15 and hanger support device 16, but this may be omitted.

  Further, a mechanism for rotating the die 2 from above will be described as an auxiliary mechanism for rotating the die 2. As shown in FIG. 9, this method uses the above-described hanger 15 and hanger support device 16, and is provided with a rotation device 6 </ b> A that rotates the hanger support device 16 together with the hanger 15. It is. Specifically, a rotating part 64 such as a gear or a pulley is attached to the upper end of a suspension support device 16 that is rotatably attached to the frame 14 that supports the die 2, and is driven by a geared motor or a rotary index (not shown). When the die 2 is rotated by a predetermined angle, the die 2 hung by the hanger 15 can be rotated together with the hanger 15 by a predetermined angle.

  Although the embodiments of the present invention have been described above, the present invention is not limited to these embodiments, and can of course be implemented in various forms without departing from the gist of the present invention.

A Support structure 1 Nonwoven fabric manufacturing apparatus 2 Die 2a Pin hole 3 Resin supply means 3a Cylindrical portion 4a Cylindrical portion 6 Rotating positioning device 6A Rotating device 7 Holding body 10 Molten resin flow 11 Conveyor 12 Nonwoven fabric 13 Gap 14 Frame 15 Lifting tool 16 Hanging Tool support device 20 Nozzle array 21 Resin inflow port 31 Resin supply port 32 Recess 32b Inner peripheral surface 32c Inner surface 32d Inner surface 33 Bolt 34 Washer 35 Nut 40 Joint tube 41 Swelling portion 41a Outer peripheral surface 41c Outer surface 41d Outer surface 41e Annular groove 50 Resin supply pipe 51 Flange 51d Bolt insertion hole 52 Holding cylinder 52c Concave groove 52d Through hole 61 Engaging member 61b Pin 62 Rotating device 62a Rotating table 63 Lifting device 64 Rotating component 70 Cylindrical support portion 70a Inner peripheral surface 71, 72 Bearing Member 73 Seal member

Claims (7)

A nonwoven fabric manufacturing apparatus in which a resin inlet portion of a die having a nozzle row from which a thermoplastic resin is extruded is rotatably attached to a resin supply port portion of a resin supply means,
One of the resin inlet part and the resin supply port part is composed of a cylindrical part and a bulging part having an outer peripheral surface expanded in diameter at the tip thereof,
On the other hand, a holding body having a recess that receives the bulging portion inside and can be relatively rotated in the circumferential direction and cannot be separated in the axial direction is provided,
A cylindrical support portion having an inner peripheral surface that supports the outer peripheral surface of the one cylindrical portion so as to be relatively rotatable continuously to the inner surface of the concave portion is provided at a tip side of the holding body,
A non-woven fabric manufacturing apparatus characterized in that a resin inflow port portion of the die is rotatably supported with respect to a resin supply port portion of a resin supply means by a support structure including these bulge portions and a holding body.   The nonwoven fabric manufacturing apparatus according to claim 1, wherein a bearing member is interposed between an outer peripheral surface of the one cylindrical portion and an inner peripheral surface of the other cylindrical support portion.   The bearing member is interposed between the outer surface which faces the base end side of said one bulging part, and the opposing inner surface which faces the base end side similarly of the recessed part of said other holding body. Nonwoven fabric manufacturing equipment.   2. A seal member surrounding the resin flow path is disposed between an outer surface facing the tip side of the one bulging portion and an opposing inner surface facing the tip side of the concave portion of the other holding body. The nonwoven fabric manufacturing apparatus of any one of -3.   The cylindrical portion is constituted by a joining pipe that constitutes the resin inflow port portion, or a resin supply pipe that constitutes the resin supply port portion, and the bulging portion is an outer periphery of a distal end portion of the joining pipe or the resin The nonwoven fabric manufacturing apparatus of any one of Claims 1-4 provided in the outer periphery of the front-end | tip part of a supply pipe | tube.   A flange formed on the outer periphery of the distal end portion of the resin supply pipe constituting the resin supply port portion or the outer periphery of the distal end portion of the joining pipe constituting the resin inflow port portion, and the front end side of the flange The non-woven fabric manufacturing apparatus according to any one of claims 1 to 5, wherein the non-woven fabric manufacturing apparatus is configured by a holding cylinder that protrudes from the recess and has the concave portion and the cylindrical support portion continuous therewith.   The outer peripheral surface of the bulging portion is a surface parallel to the outer peripheral surface of the cylindrical portion, and the holding body is continuous with the concave portion having an inner peripheral surface parallel to the outer peripheral surface of the bulging portion, and the concave portion. The nonwoven fabric manufacturing apparatus according to any one of claims 1 to 6, comprising a cylindrical support portion having an inner peripheral surface parallel to an outer peripheral surface of the cylindrical portion reduced in a stepped shape.

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