JP5643068B2 - Rotating member with needle for drilling - Google Patents

Description

  The present invention relates to a rotating member with a needle for drilling and a method for producing an aperture sheet using the same.

  A technique is known in which a large number of fine through-holes are formed in a sheet material such as a resin film, and a gas such as air permeates through the sheet material but a liquid such as water hardly permeates. As a technique for forming a large number of fine through holes in a sheet material, a method of using a roll with a needle (a rotating member with a needle) in which a needle tip protrudes from a peripheral surface is known. For example, in Patent Document 1, grooves are formed radially on one flat surface of a large number of disk-shaped members having a through hole in the center, needles are attached and fixed to the grooves, and a large number of them are stacked. Are integrated into a needle hole processing roll. Further, Patent Document 2 discloses an opening processing roll in which the tip of a needle protrudes from the peripheral surface by screwing and fixing a threaded needle from the inside of the roll into a screw hole provided on the peripheral surface of the roll. It is described that.

JP 2004-25406 A JP-A-5-42499

However, in the needle hole processing roll of Patent Document 1, in order to align the amount of protrusion of the needle from the circumferential surface of the roll (protrusion amount), each disk-shaped member constituting the needle hole processing roll is a jig. The needle disposed in the radial groove of the disk-shaped member is adjusted by moving the needle so that its tip comes into contact with the inner surface of the jig. Such an adjustment method may cause the needle tip to bend or bend. In Patent Document 1, an adhesive is used to fix the needle in the radial groove, and the maintenance work is not good, for example, it takes time to replace the broken needle.
On the other hand, since the roll for hole processing of patent document 2 adjusts the protrusion amount of the needle from the roll peripheral surface by the extent to which the needle is screwed into the screw hole, the protrusion amount of the needle cannot be aligned with high accuracy. .

  Accordingly, an object of the present invention is to provide a rotating member with a needle and the like that can eliminate the drawbacks of the above-described prior art.

  The present invention has a main body configured by laminating a plurality of plate-like members, and a number of needles fixed to the main body so that needle tips protrude from the peripheral surface thereof. The plate-like member has a concave portion on one surface and a convex portion on the other surface, and a plurality of needle insertion holes or grooves are radially formed around the concave portion, , Having a step portion on the rear end side in the longitudinal direction, inserting a needle into the needle insertion hole or groove of the plate-like member, and forming a convex portion of another plate-like member in the concave portion of the plate-like member. Provided is a rotating member with a needle that is configured so that the placement position of the needle inserted into the needle insertion hole or groove is fixed by stacking a plurality of plate-like members so as to be inserted. .

  The present invention also relates to a needle for drilling, which has a main body formed by laminating a plurality of plate-like members, and a large number of needles fixed to the main body so that the needle tips protrude from the peripheral surface. The plate-like member has a concave portion on one surface, and a plurality of needle insertion holes or grooves are formed radially around the concave portion, and the needle is arranged in the longitudinal direction thereof. A step portion is provided on the rear end side, a needle is inserted into the needle insertion hole or groove of the plate-like member, and a needle position fixing member separate from the plate-like member is provided in the concave portion of the plate-like member. By inserting and laminating a plurality of plate-like members, there is provided a rotating member with a needle that is arranged so that the position of the needle inserted into the needle insertion hole or groove is fixed.

  The rotating member with a needle for drilling according to the present invention can attach the needle accurately and easily, and the replacement work of the needle is also easy.

FIG. 1 is a schematic perspective view showing a roll with a needle and a drilling apparatus provided with the roll with a needle according to the first embodiment of the present invention. FIG. 2 is a cross-sectional view showing a part of the cross section along the axial length direction of the needle roll of the first embodiment. Drawing 3 is a top view which looked at the disk-like member which constitutes the roll with a needle of a 1st embodiment from the field side which has a crevice. 4A is a cross-sectional view taken along line XX in FIG. 3, FIG. 4B is a cross-sectional view taken along line YY in FIG. 3, and FIG. 4C is a cross-sectional view taken along line ZZ in FIG. It is. FIG. 5 is a perspective view illustrating an example of a needle used in the roll with a needle according to the first embodiment. FIG. 6 is a cross-sectional view showing a state in which another disk-shaped member having the same configuration is stacked on a disk-shaped member having a needle inserted through the needle insertion hole. 7A and 7B are diagrams showing a disk-shaped member and a needle position fixing member according to the second embodiment of the present invention. FIG. 7A is a cross-sectional view of the disk-shaped member, and FIG. FIG. 7C is a cross-sectional view of the position fixing member, and FIG. 7C is a cross-sectional view showing a state in which another disk-shaped member is overlapped with the disk-shaped member in which the needle position fixing member is fitted in the recess. FIG. 8 is a plan view (corresponding to FIG. 3) showing a disk-shaped member in still another embodiment of the present invention. 9A is a cross-sectional view taken along line X′-X ′ in FIG. 8, and FIG. 9B is a cross-sectional view taken along line Z′-Z ′ in FIG. 8. FIG. 10 is a plan view of a perforated sheet showing some examples of the formation mode of the holes formed in the sheet material.

Hereinafter, the present invention will be described based on preferred embodiments with reference to the drawings.
FIG. 1 is a perspective view showing a roll with a needle (rotating member with a needle) and a perforating apparatus equipped with the roll with a needle according to the first embodiment of the present invention. A punching apparatus 10 shown in FIG. 1 includes a roll 1 with a needle for punching and a receiving roll 12 disposed opposite to the roll 1 with a needle, and a sheet material 13 is introduced between both rolls 1 and 12. A number of fine through holes 14 are formed in the sheet material 13 by piercing the sheet material 13 with needles of the roll 1 with needle.

  As shown in FIG. 2, the roll 1 with a needle according to the first embodiment includes a roll body 2 (main body) configured by laminating a plurality of disk-like members 3 (plate-like members), and the roll body 2. And a plurality of needles 4 fixed so that the needle tips protrude from the peripheral surface. The roll with needle 1 includes first and second shaft members 5 and 6 that are fixed to both ends of the roll body 2 in the axial length direction. The roll 1 with a needle is supported by shafts 7 and 7 formed by first and second shaft members 5 and 6 on a support body (not shown) via a bearing or the like, and is rotationally driven by a drive mechanism (not shown). . The receiving roll 12 is also rotationally driven by a driving mechanism (not shown). The needle-equipped roll 1 may be connected to the receiving roll 12 by power transmission means such as a gear or a chain, and the needle-equipped roll 1 may be rotated by being driven by the rotation of the receiving roll 12 driven by a motor or the like. Further, the receiving roll 12 may be driven to rotate by a driving mechanism (not shown), and the needle-equipped roll 1 may be brought into contact with the receiving roll 12 to rotate the receiving roll 12 to rotate the needle-equipped roll 1.

In the example shown in FIG. 1, the sheet material 13 is pulled out from the raw fabric roll 13 </ b> A formed by winding the sheet material 13 in a roll shape, introduced between the roll with needle 1 and the receiving roll 12, and is fed by the nip roll 15. The sheet material 16 (perforated sheet) after perforation is conveyed to the next process. The roll with needle 1 and the receiving roll 12 rotate in a contact state or a non-contact state. The content of the next step is not particularly limited and can be arbitrarily determined. Examples of the next step include winding of the aperture sheet, cutting of the aperture sheet, bonding of the aperture sheet and another sheet, heating of the aperture sheet, spraying of liquid on the aperture sheet, and the like.
The perforated sheet obtained by perforating with the needle roll 1 of the first embodiment is preferably used as a sheet that covers a heating element and controls the heat generation characteristics of the heating element, for example. The heating element includes an oxidizable metal powder such as iron powder, and preferably generates heat by an oxidation reaction between oxygen in the air and the oxidizable metal powder, and includes an oxidizable metal powder, a fiber material, an electrolyte, and the like. A sheet-like heating element is preferable.

As shown in FIG. 3, each disk-shaped member 3 constituting the roll body 2 has a flat plate shape with a circular shape in a plan view, and as shown in FIG. 31 and a convex portion 32 on the other surface 3b.
The recess 31 has a substantially circular shape in plan view, and has a planar bottom surface 31a and an inner peripheral surface 31b surrounding the bottom surface 31a. The convex portion 32 is also substantially circular in a plan view, and has a planar protruding surface 32a and an outer peripheral surface 32b surrounding the protruding surface 32a. As shown in FIG. 4, the inclination angle of the inner peripheral surface 31b of the concave portion 31 with respect to the bottom surface 31a is steeper than the inclination angle of the outer peripheral surface 32b of the convex portion 32 with respect to the protruding surface 32a. It is easy to overlap the member 3. It is also preferable that the inner peripheral surface 31b of the recess 31 is formed perpendicular to the bottom surface 31a.
As shown in FIG. 2 and FIG. 6C, the concave portion 31 and the convex portion 32 are formed in the disc-like shape in the concave portion 31 of one disc-like member 3 when the disc-like members 3 are overlapped with each other. The convex part 32 of the disk-shaped member 3 superimposed on the member 3 is inserted, and the bottom surface 31a of the concave part 31 and the projecting surface 32a of the convex part 32 face each other with a slight gap. Further, the outer peripheral portion surrounding the concave portion 31 in the surface 3a having the concave portion 31 of the disk-shaped member 3 and the outer peripheral portion surrounding the convex portion 32 in the surface 3b having the convex portion 32 of the disk-shaped member 3 are shown in FIG. As shown in FIG. 4, the flat surfaces are parallel to each other, and the flat surfaces come into contact with each other when the disk-like members 3 are stacked.

  Further, as shown in FIGS. 3 and 4, the disc-shaped member 3 has a plurality of needle insertion holes 34 that pierce between the concave portion 31 and the outer peripheral surface 33 of the disc-shaped member 3 in the outer peripheral portion thereof. Is formed. The needle insertion holes 34 are formed at equal intervals in the circumferential direction of the disk-shaped member 3, and the needle insertion holes 34 respectively extend in the radial direction of the disk-shaped member 3.

FIG. 3 shows an example in which eight needle insertion holes 34 are formed at eight equally spaced positions in the circumferential direction. However, the number of needle insertion holes 34 provided in one disk-shaped member 3 forms holes. It can be determined as appropriate according to the use of the sheet material and the physical properties required of the sheet material having the holes.
The number of needle insertion holes 34 provided in one disk-shaped member 3 can be, for example, about 1 to 500, and preferably about 4 to 100. The disk-shaped member 3 may be used by inserting the needle 4 into all of the plurality of needle insertion holes 34 provided in each disk-shaped member 3, or a pattern or the like for which a hole is to be formed. Accordingly, the needle 4 may be inserted into only a part of the needle insertion holes 34 and used. For example, the needle 4 may be inserted and used only in every other needle insertion hole 34 in the circumferential direction.

  FIG. 5 shows a preferred example of the needle 4 used in the first embodiment. The needle 4 has a round bar-shaped insertion portion 41 inserted into the needle insertion hole 34 and a head portion 42 provided at the rear end of the insertion portion 41. The head 42 has a cylindrical large cross-sectional portion 42 a whose cross-sectional area perpendicular to the longitudinal direction of the needle 4 (hereinafter simply referred to as a cross-sectional area) is larger than the cross-sectional area of the insertion portion 41, and a cross-sectional area at the rear end 44. A conical diameter-reduced portion 42b that decreases toward the surface is formed, and a step portion 45 is formed between the insertion portion 41 and the large cross-sectional portion 42a of the head portion 42. The insertion portion 41 of the needle 4 includes a uniform diameter portion 41 b having a constant diameter and a perforated portion 41 a in which the diameter gradually decreases toward the distal end 43. The needle 4 is fixed so that a needle tip (a portion having a predetermined length from the tip 43, for example, 0.1 to 5 mm) protrudes from the peripheral surface of the roll body 2.

  The outer peripheral surface of the reduced diameter portion 42 b is inclined with respect to the longitudinal direction (axial direction) of the needle 4, and the inclination angle is the needle insertion hole 34 of the outer peripheral surface 32 b of the convex portion 32 of the disc-like member 3. Is substantially the same as the inclination angle with respect to the central axis of the. When the convex portion 32 is fitted into the concave portion 31 of the disc-like member 3 through which the needle 4 is inserted into the insertion portion 41, the outer peripheral surface 32 b of the convex portion 32 is arranged on the outer peripheral surface of the reduced diameter portion 42 b of the needle 4. Will be in contact.

As shown in FIG. 3, the concave portion 31 of the disk-shaped member 3 has a head accommodating portion 35 that protrudes outward in the radial direction of the disk-shaped member in the vicinity of the opening of each needle insertion hole 34. Have. The head accommodating portion 35 includes a pair of side surface portions 36 and 36 that are substantially the same width as the diameter of the large cross-sectional portion 42 a of the needle 4, a bottom surface portion 37 that is continuous with the bottom surface 31 a of the recess 31, and a step portion 45 of the needle 4. And a stepped portion abutting portion 38 on which the (surface of the head portion 42 on the insertion portion 41 side) abuts.
The head receiving portion 35 is a part of the head 42 of the needle 4 (particularly the reduced diameter portion 42b) in a state where the step 45 of the needle 4 inserted into the needle insertion hole 34 is in contact with the step contact 38. ) Projecting inward in the radial direction of the plate-shaped member from the inside of the head accommodating portion 35. In the state where the disk-like members 3 are overlapped, the distance between the bottom surface portion 37 and the surface facing the bottom surface portion 37 is substantially the same as the dimension in the same direction of the head portion 42, or It is preferable that the size is slightly smaller than the size.

A method for assembling the plurality of disk-shaped members 3 and the needles 4 and the like with the roll 1 with needle will be described.
First, as shown in FIG. 6A, the needle 4 is inserted by hand into the concave portion 31 of the disk-shaped member 3, and is provided on the outer periphery of the disk-shaped member 3 as shown in FIG. 6B. The needle 4 is inserted and pushed into the needle insertion hole 34 with the needle tip directed toward the outer peripheral surface 33 of the disk-shaped member 3. The inserted needle 4 is prevented from being further inserted when the above-described step 45 comes into contact with the step contact portion 38 around the needle insertion hole 34. Accordingly, if the distance from the step contact portion 38 to the roll peripheral surface is kept constant for all the needles 4 for which the amount of protrusion of the needle 4 from the roll peripheral surface is to be uniformed, the step portion 45 will be in contact with the step portion. The amount of protrusion of these needles 4 from the roll peripheral surface can be aligned with high accuracy by simply pushing in until they abut against the portion 38. In the needle 4 inserted into the needle insertion hole 34, the uniform diameter portion 41 b comes into contact with the inner surface of the needle insertion hole 34, and the whole or part of the perforated portion 41 a protrudes from the peripheral surface of the disk-shaped member 3. The length of the portion of the needle 4 that protrudes from the peripheral surface of the disk-shaped member 3 is, for example, 0.1 to 5 mm. Moreover, the diameter of the uniform diameter portion 41b is, for example, 0.5 to 2 mm.

With respect to one disk-shaped member 3 (3A), after inserting the needle 4 into all the needle insertion holes 34 into which the needle 4 is to be inserted, the disk-shaped member 3 (3A) is inserted into the disk-shaped member 3 (3A) as shown in FIG. As shown, another disk-like member 3 (3B) having the same configuration is stacked.
When the disc-like members 3A and 3B are stacked, the convex portion 32 of the other disc-like member 3 (3B) is inserted into the concave portion 31 of one disc-like member 3 (3A).
This convex part 32 makes the position of the recessed part 31 of one disk-shaped member 3 (3A) and the position of the convex part 32 of the other disk-shaped member 3 (3B) substantially the same position, and is both disk-shaped. The members 3 </ b> A and 3 </ b> B are inserted into the recess 31 only by overlapping them. Further, the disk-like members 3A and 3B are simply overlapped with each other in this manner, so that the convex part 32 of the disk-like member 3B superimposed on the upper side, more specifically, the inclined outer peripheral surface of the convex part 32 32b abuts on the head portion 42 of the needle 4 inserted into the needle insertion hole of the lower disk-shaped member 3A, and the needle 4 is also prevented from moving toward the center of the disk-shaped member 3.
Then, the disk-like members 3A and 3B in this state are joined together using appropriate fixing means 8 such as a bolt as shown in FIG. 6 (c). As a result, the needle 4 cannot move either outward or inward in the radial direction of the disk-shaped member 3A, the amount of protrusion of the needle 4 from the roll peripheral surface is fixed, and the needle 4 is fixed. The amount of protrusion of the needle 4 from the peripheral surface of the roll does not increase or decrease by moving in the needle insertion hole 34.

Then, the disk-shaped members 3 are sequentially stacked in the same manner to form a roll body 2 in which the tips of a large number of needles 4 protrude from the roll peripheral surface as shown in FIG. And as shown in FIG. 2, the 1st and 2nd shaft members 5 and 6 are fixed to the both ends of the roll main body 2 using fixing means (not shown), such as a volt | bolt. Thereby, the roll 1 with a needle | hook as shown in FIG. 1 is obtained.
It should be noted that a fixing means such as a bolt capable of releasing the connected state later is used for the connection between the disk-shaped members.
The disc-shaped member 3 shown in FIGS. 3 and 4 is formed with a bolt insertion hole 39 with a counterbore and a screw hole 39 ′. When the roll body 2 is formed, the disc-shaped member 3 The members 3 and other disk-like members (not shown) having the same configuration as the disk-like member 3 except that the positions of the bolt insertion holes 39 and the screw holes 39 ′ are reversed are alternately stacked and adjacent to each other. The disc-like members 3 to be integrated are integrated through a fixture such as a bolt 8.
Further, the overlapping disk-like members 3 may be joined each time one disk-like member 3 is overlaid, or after three or more sheets are overlaid, all of them are joined at once. Also good. Further, after all the disk-shaped members 3 constituting the roll body 2 are overlaid, they may be combined, and after the shaft members 5 and 6 are further overlaid on them, the fastening members are passed through them. May be.

According to the roll 1 with a needle of the first embodiment, when the step 45 of the needle 4 comes into contact with the step contact 38 provided in a predetermined position in advance, further insertion is prevented. Further, only by overlapping the disc-like member 3 with the needle 4 inserted into the needle insertion hole 34, the head 42 is prevented from moving inward in the radial direction, and the position of the needle 4 is fixed.
Therefore, when assembling the roll 1 with a needle or during drilling with the roll 1 with a needle, the arrangement position of the needle 4 shifts, and the protrusion amount of the needle 4 from the roll peripheral surface becomes uneven or the protrusion amount is the same. Is prevented from fluctuating. Moreover, there is no possibility that the needle 4 will fall off the roll 1 with a needle. Further, for example, for all the needles 4 used in the roll 1 with a needle, the length from the tip 43 to the stepped portion 45 is made constant, and the stepped portion abutting portion 38 is located at the position of all the needle insertion holes 34. By making the distance from the roll peripheral surface constant, it is possible to align the protruding amounts of the needles 4 from the roll peripheral surface with high accuracy.

Moreover, in the roll 1 with a needle | hook of 1st Embodiment, the needle | hook insertion hole 34 in the disk-shaped member 3 in which the inclined outer peripheral surface 32b of the convex part 32 of the disk-shaped member 3 overlaps this disk-shaped member 3 is overlapped. It abuts against the head 42 of the needle 4 inserted therein and pushes the needle 4 in the radial direction. That is, the inclined outer peripheral surface 32b of the convex portion 32 functions as an inclined surface that pushes the needle 4 in the radial direction.
Therefore, when the needle 4 is pushed into the needle insertion hole 34, the needle 4 is not fully pushed in until the step 45 comes into contact with the step contact portion 38. In addition, when the disk-shaped members 3 are stacked, the needle 4 can be pushed to an appropriate position, and the amount of protrusion of the needle 4 from the roll peripheral surface can be accurately and reliably set as designed. it can.

Moreover, in the roll 1 with a needle | hook of 1st Embodiment, the volt | bolt which can cancel | release easily the coupling | bonding state for the coupling | bonding of the disk-shaped members 3 and the coupling | bonding of the disk-shaped member 3 and the shaft members 5 and 6. The fixing means such as is used. Moreover, the needle | hook 4 can be replaced | exchanged easily by cancel | disconnecting those coupling | bondings and releasing the recessed part 31 of the disk-shaped member 3. FIG. Therefore, when the needle 4 is bent or bent, the needle replacement operation can be performed easily and / or quickly.
In order to adjust the position of the needles between the disk-shaped members 3 (the positions of the needles adjacent to each other in the width direction of the sheet) with high accuracy, a plurality of disk-shaped members 3 are provided on the outer periphery of the disk-shaped member 3 or the like. It is preferable to provide a pin hole penetrating the disk, insert a positioning pin into the pin hole, and integrate the disk-like members 3 in this state.
Further, in order to change the position of the needle so as to form each sheet shown in FIG. 10, the formation position of the pin hole for the positioning pin, the screw hole 39 and the like formed in the disk-like member 3 may be changed. .

  Next, the roll with a needle | hook of 2nd Embodiment of this invention is demonstrated. The roll with needles of the second embodiment includes a roll body configured by laminating a plurality of disk-like members 3 ′ and needle position fixing members 32 ′ shown in FIG. 6. In the second embodiment, differences from the roll with needle of the first embodiment will be mainly described, and the same points will be denoted by the same reference numerals and description thereof will be omitted. About the point which does not mention especially, the description regarding the roll 1 with a needle | hook mentioned above is applied suitably.

  As shown in FIG. 7 (a), the disc-shaped member 3 ′ constituting the roll with needles of the second embodiment has a concave portion 31 similar to that of the first embodiment on one surface 3a, while the other The surface 3b is a flat surface, and the surface 3b does not have a convex portion corresponding to the convex portion 32 of the disk-like member 3 of the first embodiment. Instead, as shown in FIG. 7B, the roll with a needle of the second embodiment has a needle position fixing member 32 ′ having substantially the same shape as the convex portion 32 of the disk-like member 3 of the first embodiment. Separately from the disk-shaped member 3. To assemble the roll with needles of the second embodiment, as shown in FIG. 7C, after inserting the needle 4 into the needle insertion hole 34 of the disk-shaped member 3 ′, The needle position fixing member 32 ′ is inserted into the recess 31, and another disk-shaped member 3 ′ having the same configuration is overlaid on the disk-shaped member 3 ′. Similarly, the tips of the needles 4 protrude from the peripheral surface of the roll by sequentially repeating the insertion of the needles 4, the arrangement of the needle position fixing members 32 ′, and the stacking of the disk-like members 3 ′. A rolled roll body can be manufactured. The connection between the disk-shaped members, the joining of the shaft members 5 and 6 to the roll body formed by stacking the disk-shaped member 3 ′ and the needle position fixing member 32 ′, and the like are performed in the same manner as in the first embodiment. be able to.

According to the roll with a needle of the second embodiment, when the step 45 of the needle 4 comes into contact with the step contact 38 provided in advance at a predetermined position, further insertion is prevented. In addition, the needle position fixing member 32 ′ is inserted into the concave portion 31 of the disk-shaped member 3 in which the needle 4 is inserted into the needle insertion hole 34, and the other disk-shaped member 3 is simply overlapped. Inward movement in the radial direction is also prevented, and the position of the needle 4 is fixed.
Therefore, when assembling the roll with a needle of the second embodiment or during drilling with the roll with a needle, the arrangement position of the needle 4 is shifted, and the protrusion amount of the needle 4 from the roll peripheral surface becomes non-uniform, It is possible to prevent the protrusion amount from changing. Further, there is no possibility that the needle 4 falls off the roll with needle. Further, for example, with respect to all the needles 4 used in the roll with a needle, the length from the tip 43 to the step 45 is made constant, and at the positions of all the needle insertion holes 34, By keeping the distance to the roll peripheral surface constant, the protruding amounts of the needles 4 from the roll peripheral surface can be aligned with high accuracy.

Further, in the roll with a needle of the second embodiment, the inclined outer peripheral surface 32 b of the needle position fixing member 32 ′ having a flat truncated cone shape is inserted into the needle insertion hole 34 in the disk-shaped member 3. It abuts on the head 42 of the needle 4 and pushes the needle 4 in the radial direction. That is, the inclined outer peripheral surface 32b of the needle position fixing member 32 ′ functions as an inclined surface that pushes the needle 4 in the radial direction.
Therefore, when the needle 4 is pushed into the needle insertion hole 34, the needle 4 is not fully pushed in until the step 45 comes into contact with the step contact portion 38. In addition, when the needle position fixing member 32 'is overlapped, the needle 4 can be pushed to an appropriate position, and the protruding amount of the needle 4 from the roll peripheral surface can be accurately and reliably set as designed. Can do.

  Moreover, also in the roll 1 with a needle | hook of 2nd Embodiment, the coupling | bonding state can be easily cancelled | released for the coupling | bonding of disk-shaped member 3 ', and the coupling | bonding of the disk-shaped member 3 and the shaft members 5 and 6. Fixing means such as bolts are used. Therefore, the needle 4 can be easily exchanged by releasing the coupling, removing the needle position fixing member 32 ′ from the recess 31, and releasing the recess 31. Therefore, when the needle 4 is bent or bent, the needle replacement operation can be performed easily and / or quickly.

  The needle-equipped roll of the present invention is used, for example, in combination with the receiving roll 12 to punch a large number of fine holes 14 in the sheet material 13 like the roll 1 with a needle shown in FIG. The roll with needle 1 preferably includes a heater capable of heating the needle 4. For example, through holes for heater insertion are formed in individual disk-shaped members to be stacked, and the through-holes are overlapped by stacking the disk-shaped members by aligning the positions of the through-holes. The heater insertion arrangement portion can be formed. The heater insertion portion is preferably formed in parallel to the axial direction of the roll, and is preferably formed between adjacent needle insertion holes 34 in the outer peripheral portion of the disk-shaped member. Moreover, even if the disc-shaped member is entirely made of metal, a part thereof may be made of metal and the other part may be made of non-metal. For example, the outer peripheral portion in which the needle insertion hole is formed may be formed of a heat insulating material (for example, bakelite or the like), and the inside may be made of metal.

  The receiving roll 12 is composed of a metal material such as an aluminum material or stainless steel or a resin material, or a lined material such as urethane, silicon, fluororubber or styrene, and a groove or a hole is formed in a portion where the needle 4 comes into contact. It is preferred that the needle is not in contact with the roll. The groove width and the hole diameter are preferably 1 to 2 times, more preferably 1.2 to 1.5 times the diameter of the needle punched portion 41a. In addition, the receiving roll 12 may be formed of a flexible material such as sponge or urethane foam at a portion where the needle 4 hits.

As the sheet material 13 to be perforated, various known sheet materials can be used. For example, a synthetic resin sheet material, a single layer or multilayer nonwoven fabric, a synthetic resin sheet material nonwoven fabric or woven fabric And the like. Nonwoven fabrics include, for example, spunbonded nonwoven fabrics, air-through nonwoven fabrics (nonwoven fabrics obtained by heat-sealing the intersections of fiber webs produced by the airlay method or card method), meltblown nonwoven fabrics, spunlace nonwoven fabrics, needles Punch nonwoven fabric etc. are mentioned.
The sheet material made of synthetic resin has a thickness of 0.01 to 1 mm, for example.

The diameter of the hole to be drilled in the sheet material 13 is the purpose of drilling, the use of the sheet material (hole sheet) in which the hole is formed, and the physical properties required for the sheet material (hole sheet) in which the hole is formed. However, in the present invention, since the protruding amount of the needle can be aligned with high accuracy, for example, a fine through-hole having a diameter of 30 to 200 μm, particularly 100 to 150 μm is formed. Many can be formed.
In addition, the present invention is suitable for obtaining a perforated sheet in which a large number of fine through holes are formed in a non-breathable or low breathable sheet material and air or water vapor is passed but liquid is difficult to pass. .

As mentioned above, although this invention was demonstrated based on the preferable embodiment, this invention is not restrict | limited to said each embodiment, A various change is possible.
For example, although the needle insertion holes 34 are provided radially in the disk-like members 3 and 3 ′ in the above-described embodiment, the needle insertion grooves 34 ′ can be formed radially instead. The disc-shaped member 3A shown in FIGS. 8 and 9 is an example of a disc-shaped member in which a plurality of needle insertion grooves 34 ′ are formed radially around the recess 31. As shown in the figure, the needle insertion groove 34 ′ is formed from the central recess 31 side to the outer peripheral surface 33 of the disk-shaped member.
The plate-like member may have an elliptical shape or a polygonal shape such as a triangle, a pentagon, or an octagon in addition to a substantially circular shape in plan view. A polygonal plate-like member having a planar view shape of a hexagon or more is a disc-like member.

8 and 9, the same reference numerals are given to the same components in the disk-like member 3 shown in FIGS. 3 and 4. It is attached.
By inserting a needle into the needle insertion groove of the disk-like member having such a needle insertion groove and then laminating and integrating the plurality of the disk-like members, the same effect as the above-described embodiment can be obtained. can get.

  Further, in the roll 1 with a needle, the protruding positions of the needles 4 of all the stacked disk-shaped members may be the same position in the circumferential direction of the roll 1 with a needle, or a part of the disk-shaped members. The protruding position of the needle 4 may be different from the protruding position of the needle 4 of another part of the disk-shaped member. In FIG. 10, some examples of the formation aspect of the hole formed in a sheet | seat material are shown. In FIG. 10, the MD direction is the flow direction of the sheet material when drilling. In the perforated sheet 16 shown in FIG. 10 (a), a hole row composed of a large number of holes 14 in series in the MD direction is formed in multiple rows in the CD direction, and the holes 14 in the MD direction of adjacent hole rows. The positions of match. In the perforated sheet 16 shown in FIG. 10 (b), a hole row composed of a large number of holes 14 in series in the MD direction is formed in multiple rows in the CD direction, and the holes 14 in the MD direction of adjacent hole rows. The position of is shifted by a half pitch. In the perforated sheet 16 shown in FIG. 10 (c), a hole row composed of a large number of holes 14 in series in the MD direction is formed in multiple rows in the CD direction, and the holes 14 in the MD direction of adjacent hole rows. Is shifted by 1/3 pitch.

Alternatively, a hole may be formed at the center of the disk-shaped member, and the shaft portion 7 of the roll with needle 1 may be formed by a columnar shaft member that penetrates the roll body 2.
In addition, the description omitted in one embodiment and the requirements of only one embodiment can be applied to other embodiments as appropriate, and the requirements in each embodiment can be appropriately applied between the embodiments. Can be substituted for each other.

1 Roll with needle (rotating member with needle)
2 Roll body (main body)
3, 3 ', 3A Disc member (plate member)
3a One surface 3b The other surface 31 Recessed portion 31a Bottom surface 31b Inner peripheral surface 32 Convex portion 32a Protruding surface 32b Outer peripheral surface 33 Outer peripheral surface 34 Needle insertion hole 35 Head receiving portion 38 Stepped portion contact portion 32 'Needle position fixing member 4 Needle 41 Insertion part 41b Uniform diameter part 41a Perforation part 42 Head 43 Front end 44 Rear end 45 Step part 5, 6 Shaft member 7 Shaft part 8 Bolt (fixing means)
10 punching device 12 receiving roll 13 sheet material 14 through hole (needle hole)
16 Opening sheet

Claims (4)

A rotating member with a needle for drilling, which has a main body configured by laminating a plurality of plate-like members, and a large number of needles fixed to the main body so that the needle tips protrude from the peripheral surface thereof. ,
The plate-like member has a concave portion on one surface and a convex portion on the other surface, and a plurality of needle insertion holes or grooves are radially formed around the concave portion,
The needle has a step on the rear end side in the longitudinal direction,
By inserting a needle into the needle insertion hole or groove of the plate-like member and inserting a convex portion of another plate-like member into the concave portion of the plate-like member, by laminating a plurality of plate-like members, A rotating member with a needle, wherein an arrangement position of a needle inserted into the needle insertion hole or groove is fixed.   The rotating member with a needle according to claim 1, wherein the convex portion has an inclined surface that abuts the needle inserted into the needle insertion hole or groove and pushes the needle in a radial direction. A rotating member with a needle for drilling, which has a main body configured by laminating a plurality of plate-like members, and a large number of needles fixed to the main body so that the needle tips protrude from the peripheral surface thereof. ,
The plate-like member has a recess on one surface, and a plurality of needle insertion holes or grooves are formed radially around the recess,
The needle has a step on the rear end side in the longitudinal direction,
A needle is inserted into the needle insertion hole or groove of the plate-like member, and a needle position fixing member separate from the plate-like member is inserted into the concave portion of the plate-like member to stack a plurality of plate-like members. Thus, the arrangement position of the needle inserted into the needle insertion hole or groove is fixed ,
The needle position fixing member is a rotating member with a needle having an inclined surface that abuts the needle inserted into the needle insertion hole or groove and pushes the needle in a radial direction . Using the rotating member with a needle according to any one of claims 1 to 3 ,
A method for producing a perforated sheet, which is obtained by perforating a sheet material to obtain a perforated sheet having a large number of minute holes.

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