JP5854810B2 - Sheet processing equipment - Google Patents

Description

  The present invention relates to a sheet processing apparatus that performs thermal processing on a sheet member that is a nonwoven fabric.

  Conventionally, at the manufacturing site of absorbent articles such as light incontinence absorbent pads that are attached and used inside disposable diapers and disposable diapers, thermal processing is performed by sandwiching laminated nonwoven fabric between processing rolls and anvil rolls. The processing apparatus to apply is utilized. In patent document 1, the heat seal apparatus used for manufacture of a disposable absorbent article is disclosed. In the heat seal apparatus, at least one of the two seal processing portions is provided with a concavo-convex pattern for heat seal processing, and heat sealing is performed on the absorbent article being manufactured sandwiched between the two seal processing portions. Processing is performed.

  On the other hand, Patent Document 2 relates to a horizontal sealing device of an automatic filling and packaging machine, and a sheet roll of the horizontal sealing device includes a rotating roll body and a plurality of heat seal bars attached to the outer peripheral surface thereof. The plurality of heat seal bars are arranged at predetermined intervals in the circumferential direction and extend in the width direction. In the vicinity of the outer peripheral surface of the rotary roll body, a tube hole is formed in which a heater is inserted along the attachment position of the heat seal bar.

JP 2011-161796 A Utility Model Registration No. 3125431

  By the way, in the horizontal sealing apparatus of patent document 2, the rotary roll main body and each heat seal bar have a Z-shaped attachment section formed therein, and each heat seal bar attachment section includes a plurality of attachment parts of the rotary roll main body. It is fixed with screws. Therefore, the heat seal bar cannot be easily replaced, and the time required for the replacement becomes long. In addition, the shapes of the rotary roll body and each heat seal bar are complicated.

  The present invention has been made in view of the above problems, and an object of the present invention is to easily replace a tool part and perform a plurality of types of processing with one apparatus.

The invention according to claim 1 is a sheet processing apparatus that performs processing on a sheet member that is a nonwoven fabric, and includes a transport mechanism that transports the sheet member in a predetermined transport direction, and one main surface of the sheet member. A substantially columnar anvil roll that is disposed to face each other and rotates about a first rotation axis that is parallel to the one main surface and faces the width direction perpendicular to the conveying direction, and the other main surface of the sheet member A processing roll disposed oppositely and rotating about a second rotation axis facing the width direction, and having a processing roll sandwiching the sheet member between the anvil roll and the processing The roll is a substantially cylindrical roll body that rotates about the second rotation axis, and at least both ends are substantially annular, and are externally attached to the roll body and detachably attached to the roll body, Ann A tool portion in contact with the seat member at Ruroru a position opposed to, directly or indirectly with screwed into threaded portion formed on an outer peripheral surface of the roll body at one edge of the tool portion And a lock nut portion that determines the position of the one end edge by abutting .

  Invention of Claim 2 is the sheet processing apparatus of Claim 1, Comprising: Between the internal peripheral surface of the edge part of the said tool part, and the outer peripheral surface of the said roll main body, the end of the said processing roll An annular gap that gradually increases toward the edge is provided, and the work roll further includes a pressure ring that is inserted into the annular gap to fix the position of the end of the tool portion.

The invention according to claim 3 is the sheet processing apparatus according to claim 1 or 2 , wherein the lock nut portion is a double lock nut.

A fourth aspect of the present invention is the sheet processing apparatus according to any one of the first to third aspects , wherein the processing roll is screwed to a screw portion formed on an outer peripheral surface of the roll body. And further comprising another lock nut portion that directly or indirectly abuts against the other end edge of the tool portion, the winding direction of the thread of the lock nut portion and the winding direction of the thread of the other lock nut. Is the opposite.

Invention of Claim 5 is a sheet | seat processing apparatus in any one of Claim 1 thru | or 4 , Comprising: The said process roll is further provided with the heating part which heats the said tool part.

A sixth aspect of the present invention is the sheet processing apparatus according to any one of the first to fifth aspects, wherein the tool portion is substantially cylindrical.

  In the present invention, the tool portion can be easily replaced and a plurality of types of processing can be performed with one apparatus.

It is a front view which shows the structure of the sheet processing apparatus which concerns on one embodiment. It is a side view of a processing roll. It is sectional drawing which expands and shows a part of processing roll. It is sectional drawing of a processing roll. It is a top view of a sheet member. It is a top view of an absorption sheet. It is a figure which shows the temperature of the some 1st convex part of a process roll. It is a figure which shows the temperature of the some 1st convex part of a process roll. It is a figure which shows the temperature of the some 1st convex part of a process roll. It is a figure which shows the temperature of the some 1st convex part of a process roll. It is a figure which shows the temperature of the some 1st convex part of a process roll. It is a figure which shows the temperature of the some 1st convex part of a process roll.

  FIG. 1 is a front view showing a configuration of a sheet processing apparatus 1 according to an embodiment of the present invention. The sheet processing apparatus 1 is an apparatus that performs thermal processing on a sheet member 9 that is a nonwoven fabric. In the present embodiment, the sheet processing apparatus 1 manufactures an absorbent sheet in which particles of a superabsorbent resin such as a superabsorbent polymer (SAP) are sandwiched between a plurality of sheet members. The absorbent sheet is a sheet member for absorbent articles used for absorbent articles such as disposable diapers and light incontinence absorbent pads.

  The sheet processing apparatus 1 includes a transport mechanism 2, an anvil roll 3, and a processing roll 4. The transport mechanism 2 includes a plurality of transport rolls 21 disposed on the left and right sides of the anvil roll 3 and the processing roll 4 in FIG. 1, and a predetermined transport direction (see FIG. 1 in the left-right direction).

  The anvil roll 3 is disposed so as to face one main surface 92 of the sheet member 9 (the lower main surface in FIG. 1 and referred to as “lower surface 92” in the following description). The anvil roll 3 has a substantially cylindrical shape centered on the first rotation shaft 31 that is parallel to the lower surface 92 of the sheet member 9 and that faces in the width direction perpendicular to the conveying direction of the sheet member 9. Rotates as the center.

  The processing roll 4 is disposed to face the upper surface 91 which is the other main surface of the sheet member 9. The work roll 4 has a substantially cylindrical shape centered on the second rotation shaft 41 facing the width direction, and rotates about the second rotation shaft 41. The processing roll 4 performs thermal processing with the sheet member 9 interposed between the processing roll 4 and the anvil roll 3. In this Embodiment, the sheet | seat member 9 contains the several nonwoven fabric sheet laminated | stacked, and the said heat processing is joining (what is called heat sealing) accompanied by the heating of a several nonwoven fabric sheet.

  FIG. 2 is a side view showing the processing roll 4. As shown in FIG. 2, the processing roll 4 includes a roll body 42, a tool part 43, a pressure ring 44, and a lock nut part 45. The roll body 42 is a substantially cylindrical member that rotates about the second rotation shaft 41. The tool portion 43 has a substantially cylindrical shape centered on the second rotation shaft 41, and is externally attached to the roll body 42 and is detachably attached to the roll body 42. The tool part 43 contacts the upper surface 91 (see FIG. 1) of the sheet member 9 at a position facing the anvil roll 3. The pressure ring 44 directly contacts the edge of the tool part 43 on both sides in the width direction of the tool part 43, and fixes the positions of both end parts of the tool part 43. The lock nut portion 45 is in direct contact with the pressure ring 44 on both sides in the width direction of the tool portion 43 (that is, by indirect contact with the end edge of the tool portion 43). The position of the edge on both sides in the width direction is determined.

  FIG. 3 is an enlarged sectional view showing the vicinity of one end of the processing roll 4. The structure of the other end of the work roll 4 is substantially the same as the structure shown in FIG. As shown in FIG. 3, on both sides in the width direction of the tool portion 43, the distance gradually increases as the end edge of the work roll 4 approaches between the inner peripheral surface of the end portion of the tool portion 43 and the outer peripheral surface of the roll body 42. An annular gap 40 is provided. In the present embodiment, at both end portions of the tool portion 43, the inner diameter of the tool portion 43 gradually increases as it approaches the end edge, and the diameter of the roll body 42 is approximately constant. The inner diameter of the tool portion 43 may be approximately constant, and the annular gap 40 may be provided by gradually decreasing the diameter of the roll body 42 as it approaches the edge.

  Since the inner diameter of the tool portion 43 is larger than the outer diameter of the roll body 42 in the state before use of the sheet processing apparatus 1, the tool portion 43 can be easily extrapolated with respect to the roll body 42. When the sheet processing apparatus 1 is used, the roll body 42 and the tool unit 43 are heated by heating by the heating unit 46 described later. Since the thermal expansion coefficient of the roll main body 42 is larger than that of the tool portion 43, the inner peripheral surface of the tool portion 43 comes into contact with the outer peripheral surface of the roll main body 42 except for both end portions in the width direction.

  The pressure ring 44 includes a substantially cylindrical projecting portion 441 and a substantially annular plate-shaped flange portion 442 that extends outward in the circumferential direction from the end of the projecting portion 441. The outer diameter of the protruding portion 441 gradually decreases as the distance from the flange portion 442 increases. That is, the cross section of the protrusion 441 is wedge-shaped. The protruding portion 441 is inserted into the annular gap 40 between the tool portion 43 and the roll body 42, and the outer peripheral surface of the protruding portion 441 contacts the inner peripheral surface of the tool portion 43. The protruding portion 441 is pushed into the annular gap 40 until the flange portion 442 directly contacts the edge of the tool portion 43. Thereby, the position of the edge part of the tool part 43 is fixed.

  The lock nut portion 45 is a double lock nut having two lock nuts 451. Each lock nut 451 is screwed into a screw portion 421 formed on the outer peripheral surface of the roll body 42 and directly contacts the flange portion 442 of the pressure ring 44. Thereby, the position of the pressure ring 44 is determined, and the position in the width direction of the edge of the tool portion 43 that directly contacts the pressure ring 44 is determined. Another lock nut portion that is screwed into the screw portion 421 formed on the outer peripheral surface of the roll body 42 at the winding direction of the thread of the lock nut portion 45 shown in FIG. It is opposite to the winding direction of 45 threads.

  FIG. 4 is a cross-sectional view of the processing roll 4 cut along a plane passing through the second rotation shaft 41. As shown in FIG. 4, the tool unit 43 includes a plurality of (seven in the present embodiment) first convex portions 432 arranged in the width direction on the outer peripheral surface 431. The tool part 43 also includes a plurality of second protrusions 433 arranged in the width direction between the plurality of first protrusions 432 on the outer peripheral surface 431. In the present embodiment, four second convex portions 433 are arranged between two adjacent first convex portions. The width of each second protrusion 433 is smaller than the width of each first protrusion 432. As shown in FIG. 2, the plurality of first protrusions 432 and the plurality of second protrusions 433 are each substantially annular provided over the entire circumference of the outer peripheral surface 431 of the tool part 43. The plurality of first protrusions 432 and the plurality of second protrusions 433 are in contact with the upper surface 91 (see FIG. 1) of the sheet member 9 at a position facing the anvil roll 3.

  As shown in FIG. 4, the processing roll 4 includes a plurality of heating units 46 extending in the width direction on the inner side of the outer peripheral surface 431 of the tool unit 43. The plurality of heating parts 46 are substantially cylindrical having the same structure, and are inserted into holes extending in the width direction formed in the vicinity of the tool part 43 on the end surface of the roll body 42 to heat the tool part 43. In the processing roll 4, as shown in FIG. 1, the plurality of heating units 46 are arranged at approximately equal intervals in the circumferential direction around the second rotation shaft 41.

  As shown in FIG. 4, each heating unit 46 includes a substantially cylindrical heat conducting unit 461 extending in the width direction, a central heating unit 462 provided at the center of the heat conducting unit 461, and the width of the heat conducting unit 461. End heat generating portions 463 provided at both ends in the direction. When a region where the plurality of first convex portions 432 and second convex portions 433 of the tool portion 43 are provided in the width direction is referred to as a convex portion region, the heat conducting portion 461 is provided over substantially the entire length of the convex portion region. In the work roll 4, the plurality of first protrusions 432 and the plurality of second protrusions 433 are heated by the plurality of heating units 46.

  As shown in FIG. 1, the work roll 4 includes a temperature sensor 47 that is disposed at one end in the width direction and measures temperature. The temperature sensor 47 is inserted into a hole provided in the end face of the roll body 42 and extending in the width direction. In the sheet processing apparatus 1, the plurality of heating units 46 are controlled based on the output from the temperature sensor 47 so that the temperature measured by the temperature sensor 47 becomes equal to a predetermined set temperature. In the present embodiment, a temperature sensor is not provided at the other end in the width direction of the work roll 4.

  In the sheet processing apparatus 1, a superabsorbent polymer (SAP (Super Absorbent Polymer)) or the like is disposed between a plurality of laminated non-woven sheets of sheet members 9 that are transported to the processing roll 4 and the anvil roll 3 by the transport mechanism 2. Highly absorbent resin particles are present. As shown in FIG. 5, in the sheet member 9, the superabsorbent resin particles are dispersed in a plurality of strip-shaped particle existence regions 93 each extending in parallel with the conveying direction, and between the plurality of particle existence regions 93. Are provided with a plurality of strip-shaped particle non-existing regions 94 extending in parallel with the transport direction. In other words, in the sheet member 9, the plurality of particle existence regions 93 are provided in a stripe shape. In FIG. 5, parallel oblique lines are given to the particle existence region 93.

  In the sheet processing apparatus 1 illustrated in FIG. 1, when the sheet member 9 passes between the processing roll 4 and the anvil roll 3, the plurality of first protrusions 432 and the plurality of second protrusions 432 of the processing roll 4 illustrated in FIG. 4. The convex portion 433 contacts the plurality of particle non-existence regions 94 (see FIG. 5) of the sheet member 9. And between the heated 1st convex part 432 and the 2nd convex part 433, and the anvil roll 3, the laminated | stacked some nonwoven fabric sheet is heat-joined in the particle | grain absence area | region 94. FIG. In the sheet member 9, the width of the particle non-existing region 94 with which the first convex portion 432 contacts is larger than the width of the particle non-existing region 94 with which the second convex portion 433 contacts.

  When the thermal bonding in the particle non-existing region 94 is completed, the sheet member 9 is cut by being joined at a plurality of cutting regions that are arranged at equal intervals in the transport direction and each extend in the width direction by a processing unit (not shown). The Then, among the seven particle non-existing regions 94 thermally bonded by the first convex portion 432, the five particle non-existing regions 94 excluding both ends are cut. Thereby, as shown in FIG. 6, the absorption sheet 95 in which the five particle existence regions 93 are provided in a stripe shape is formed.

  By the way, in the normal processing roll utilized for thermal bonding, in each of the plurality of heating parts inserted into the roll body, the temperature of the central part is the highest, and the temperature gradually decreases as the distance from the central part increases. Assuming that the above-described processing roll 4 is provided with such a heating unit, in such a processing roll (hereinafter referred to as “comparative processing roll”), a convex portion located at the center of the tool portion is provided. Temperature and the temperature of the convex part located in an edge part will differ greatly. As a result, it becomes impossible to realize uniform thermal bonding throughout the width direction of the sheet member. In other words, the desired thermal bonding cannot be realized at least at any position in the width direction. In particular, if there is insufficient thermal bonding in the particle non-existing region to be cut in the subsequent process, that is, the particle non-existing region corresponding to the first convex portion, the particle non-existing region was laminated after being cut. The nonwoven fabric sheet peels off and the particles inside flow out.

  On the other hand, in the sheet processing apparatus 1, the end heating unit 463 of the heating unit 46 shown in FIG. 4 generates a larger amount of heat per unit time than the central heating unit 462, so that the temperature range of the heating unit 46 is increased. Uniformity in direction is improved. Thereby, the uniformity of the temperature of the several 1st convex part 432 of the tool part 43 can be improved, and the thermal joining of the nonwoven fabric sheet in the some particle absence area | region 94 corresponding to the several 1st convex part 432 is carried out. Quality uniformity can be improved. Moreover, the uniformity of the temperature of the plurality of second convex portions 433 can also be improved. Furthermore, the uniformity in the width direction of the temperature of the heating unit 46 is improved, so that the degree of freedom of arrangement in the width direction of the temperature sensor 47 used for temperature control of the heating unit 46 is improved.

  FIG. A thru | or FIG. F is a diagram comparing the temperature of the plurality of first protrusions of the processing roll of the comparative example and the temperature of the plurality of first protrusions 432 of the processing roll 4. FIG. A thru | or FIG. In F, the temperatures of the seven first protrusions of the processing roll of the comparative example are plotted in the left area of the figure, and the temperatures of the seven first protrusions 432 of the processing roll 4 are plotted in the right area of the figure. Yes.

  FIG. A thru | or FIG. F indicates the temperature of the first protrusion when the set temperature is 125 ° C., 135 ° C., 145 ° C., 155 ° C., 165 ° C., and 175 ° C., respectively. FIG. A thru | or FIG. As shown to F, the temperature of the some 1st convex part 432 of the processing roll 4 which concerns on this Embodiment is higher than the temperature of the some 1st convex part of the processing roll of a comparative example. Moreover, the average temperature of the some 1st convex part 432 of the process roll 4 is closer to setting temperature than the average temperature of the some 1st convex part of the process roll of a comparative example. In the processing roll of the comparative example, as described above, the temperature at the central portion is the highest, and the temperature gradually decreases as the distance from the central portion increases. For this reason, when the temperature control of the heating unit is performed based on the output of the temperature sensor provided at the end of the processing roll, the temperature of the central part is significantly higher than the set temperature, and the average temperature is also higher than the set temperature. Get higher.

  FIG. In the example of A set temperature 125 ° C., the average temperature and standard deviation of the first convex portion of the comparative example are 140.3 ° C. and 14.2 ° C., whereas the first convex portion 432 of the processing roll 4 The average temperature and standard deviation are 124.0 ° C and 5.1 ° C. FIG. In the example in which the set temperature of B is 135 ° C., the average temperature and standard deviation of the first convex portion of the comparative example are 150.1 ° C. and 9.7 ° C., whereas the first convex portion 432 of the processing roll 4 The average temperature and standard deviation are 133.4 ° C and 1.3 ° C. FIG. In the example of the C set temperature of 145 ° C., the average temperature and standard deviation of the first convex portion of the comparative example are 152.1 ° C. and 14.3 ° C., whereas the first convex portion 432 of the processing roll 4 The average temperature and standard deviation are 146.1 ° C and 2.0 ° C.

  FIG. In the example in which the set temperature of D is 155 ° C., the average temperature and standard deviation of the first convex portion of the comparative example are 177.9 ° C. and 10.3 ° C., whereas the first convex portion 432 of the processing roll 4 The average temperature and standard deviation are 150.1 ° C and 4.2 ° C. FIG. In the example where the set temperature of E is 165 ° C., the average temperature and standard deviation of the first convex portion of the comparative example are 179.9 ° C. and 12.1 ° C., whereas the first convex portion 432 of the processing roll 4 The average temperature and standard deviation are 159.6 ° C and 4.1 ° C. FIG. In the example where the set temperature of F is 175 ° C., the average temperature and standard deviation of the first convex portion of the comparative example are 210.4 ° C. and 26.1 ° C., whereas the first convex portion 432 of the processing roll 4 The average temperature and standard deviation are 172.0 ° C and 3.8 ° C.

  In a processing roll in which a plurality of first convex portions over the entire circumference are arranged in the width direction on the outer peripheral surface of the tool portion, the temperatures of the plurality of first convex portions are usually likely to vary. In the processing roll 4 according to the present embodiment, the temperature uniformity of the plurality of first convex portions 432 of the tool portion 43 can be improved as described above. Therefore, the structure of the processing roll 4 is particularly suitable for a processing roll in which a plurality of first protrusions over the entire circumference are arranged in the width direction on the outer peripheral surface of the tool portion.

  In the sheet processing apparatus 1, the temperature sensor 47 is disposed at one end in the width direction of the processing roll 4. Thereby, compared with the case where it provides in the center part etc. of the width direction of the processing roll 4, installation, maintenance, etc. of the temperature sensor 47 become easy. In addition, since the temperature can be measured in the vicinity of the end heat generating portion 463 that generates a larger amount of heat per unit time than the central heat generating portion 462, the temperature control accuracy of the heating portion 46 can be improved.

  In the sheet processing apparatus 1, a plurality of types of tool portions 43 having different shapes and arrangements of convex portions that come into contact with the sheet member 9 are prepared, and the tool portion 43 attached to the roll body 42 is exchanged, whereby Multiple types of processing can be performed by one sheet processing apparatus 1. In addition, an annular gap 40 is provided between the inner peripheral surface of the end portion of the tool portion 43 and the outer peripheral surface of the roll main body 42 so as to gradually increase as the end edge of the processing roll 4 is approached. The body 42 can be easily extrapolated. Furthermore, the position of the end portion of the tool portion 43 can be easily fixed by inserting the pressure ring 44 into the annular gap 40.

  In the processing roll 4, as described above, the position of the one end edge is determined by being screwed into the screw portion 421 formed on the outer peripheral surface of the roll body 42 and abutting against one end edge of the tool portion 43. A lock nut portion 45 to be determined is provided. Thereby, the position of the width direction of the tool part 43 can be adjusted easily. Further, since the lock nut portion 45 is a double lock nut, it is possible to prevent unintentional rotation and movement in the width direction of the lock nut portion 45 and to prevent the position of the tool portion 43 in the width direction from being shifted. it can.

  In the processing roll 4, the thread winding directions are opposite to each other in the two lock nut portions 45 provided on both sides in the width direction of the tool portion 43. For this reason, even when one lock nut portion 45 is tightened toward the center portion in the width direction, the rotation of the one lock nut portion 45 may be transmitted to the other lock nut portion 45 via the tool portion 43. The transmitted rotation is rotation in a direction in which the other lock nut portion 45 is tightened toward the center portion in the width direction. Therefore, when the one lock nut portion 45 is rotated to the tightening side, the other lock nut portion 45 can be prevented from rotating in the slack direction. As a result, the tool portion 43 can be more easily positioned in the width direction.

  As described above, in the work roll 4, the heating unit 46 that heats the tool unit 43 is provided in the roll body 42. Thereby, the tool part 43 can be replaced | exchanged easily, without replacing | exchanging the heating part 46. FIG.

  As mentioned above, although embodiment of this invention has been described, this invention is not limited to the said embodiment, A various change is possible.

For example, in the processing roll 4, the pressure ring 44 is omitted from both sides of the tool part 43, and the lock nut part 45 directly abuts against the edges on both sides in the width direction of the tool part 43. The positions of the edges on both sides may be determined. Even in this case, the position of the tool portion 43 in the width direction can be easily adjusted. In addition, a stopper protruding from the outer peripheral surface of the roll body 42 is provided, and after the position of the tool portion 43 is determined by bringing one end edge of the tool portion 43 into contact with the stopper, the other end of the tool portion 43 is The position of the end portion may be fixed by the pressure ring 44 or the lock nut portion 45. In the processing roll 4 according to the technique related to the present invention, the position of the tool portion 43 may be adjusted and fixed by various structures other than the pressure ring 44 and the lock nut portion 45.

  In the tool part 43, the plurality of first convex parts 432 and second convex parts 433 are not necessarily provided over the entire circumference of the outer peripheral surface 431 of the tool part 43. For example, each of the plurality of first protrusions 432 may have a plurality of protrusion elements arranged intermittently in the circumferential direction. Even in this case, the sheet processing apparatus 1 can improve the temperature uniformity of the plurality of first protrusions 432 arranged in the width direction, as described above. In the tool portion 43, the number and shape of the convex portions may be variously changed. For example, a plurality of convex portions each having a linear shape or a strip shape extending in the width direction may be arranged in the circumferential direction.

  The tool part 43 does not necessarily have a substantially cylindrical shape, and at least both ends may be substantially annular. For example, a plurality of substantially strip-shaped intermediate members extending in the width direction may be provided between both ends of the substantially annular shape, and both ends may be connected by the plurality of intermediate members. In this case, the processing on the sheet member 9 is performed by bringing some or all of the plurality of intermediate members into contact with each other. However, from the viewpoint of increasing the rigidity of the tool portion 43, the tool portion 43 is preferably substantially cylindrical. Thereby, a deformation | transformation of the tool part 43 can be prevented and the tool part 43 can be attached to the roll main body 42 easily. In addition, the life of the tool unit 43 can be extended.

  In the sheet processing apparatus 1, the processing performed on the sheet member 9 is not necessarily limited to thermal bonding, and various thermal processing such as embossing and cutting processing with heating may be performed. Further, the processing applied to the sheet member 9 is not necessarily accompanied by heating. For example, the sheet processing apparatus 1 may perform embossing or cutting by only pressing without heating, on the sheet member 9.

  The configurations in the above-described embodiments and modifications may be combined as appropriate as long as they do not contradict each other.

DESCRIPTION OF SYMBOLS 1 Sheet processing apparatus 2 Conveyance mechanism 3 Anvil roll 4 Processing roll 9 Sheet member 31 1st rotating shaft 40 Annular gap 41 2nd rotating shaft 42 Roll main body 43 Tool part 44 Pressure ring 45 Lock nut part 46 Heating part 91 Upper surface 92 Lower surface 421 Screw part

Claims (6)

A sheet processing apparatus for processing a sheet member that is a nonwoven fabric,
A transport mechanism for transporting the sheet member in a predetermined transport direction;
A substantially cylindrical anvil roll disposed around one main surface of the sheet member and rotating about a first rotation axis parallel to the one main surface and facing a width direction perpendicular to the conveying direction;
The sheet member is disposed in opposition to the other main surface of the sheet member, and has a substantially cylindrical shape that rotates around a second rotation axis that faces the width direction, and the sheet member is sandwiched between the anvil roll and processed. Processing rolls to be applied,
With
The processing roll is
A substantially cylindrical roll body that rotates about the second rotation axis;
At least both ends are substantially annular, and are attached to the roll body so as to be detachably attached to the roll body, and a tool part that contacts the sheet member at a position facing the anvil roll;
A lock nut portion that is screwed into a screw portion formed on the outer peripheral surface of the roll body and determines the position of the one edge by directly or indirectly contacting one edge of the tool portion. When,
A sheet processing apparatus comprising: The sheet processing apparatus according to claim 1,
Between the inner peripheral surface of the end portion of the tool portion and the outer peripheral surface of the roll body, an annular gap that gradually increases as it approaches the edge of the processing roll is provided,
The sheet processing apparatus, wherein the processing roll further includes a pressure ring that is inserted into the annular gap to fix the position of the end portion of the tool portion. The sheet processing apparatus according to claim 1 or 2 ,
The sheet processing apparatus, wherein the lock nut portion is a double lock nut. The sheet processing apparatus according to any one of claims 1 to 3 ,
The work roll further includes another lock nut portion that is screwed into a thread portion formed on the outer peripheral surface of the roll body and directly or indirectly abuts against the other end edge of the tool portion,
The sheet processing apparatus according to claim 1, wherein a winding direction of the thread of the lock nut portion is opposite to a winding direction of the thread of the other lock nut. The sheet processing apparatus according to any one of claims 1 to 4 ,
The sheet processing apparatus, wherein the processing roll further includes a heating unit that heats the tool unit. The sheet processing apparatus according to any one of claims 1 to 5 ,
The tool processing unit has a substantially cylindrical shape.

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