US20070227217A1 - Method and device for the manufacture of perforated films or foils - Google Patents

Method and device for the manufacture of perforated films or foils Download PDF

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Publication number
US20070227217A1
US20070227217A1 US11/727,490 US72749007A US2007227217A1 US 20070227217 A1 US20070227217 A1 US 20070227217A1 US 72749007 A US72749007 A US 72749007A US 2007227217 A1 US2007227217 A1 US 2007227217A1
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United States
Prior art keywords
foil
film
holes
accordance
working part
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US11/727,490
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English (en)
Inventor
Hans-Joachim Halamoda
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Groz Beckert KG
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Groz Beckert KG
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Publication date
Application filed by Groz Beckert KG filed Critical Groz Beckert KG
Assigned to GROZ-BECKERT KG reassignment GROZ-BECKERT KG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HALAMODA, HANS-JOACHIM
Publication of US20070227217A1 publication Critical patent/US20070227217A1/en
Abandoned legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/24—Perforating by needles or pins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/01—Means for holding or positioning work
    • B26D7/02—Means for holding or positioning work with clamping means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/20—Cutting beds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/38—Cutting-out; Stamping-out
    • B26F1/44—Cutters therefor; Dies therefor
    • B26F2001/4427—Cutters therefor; Dies therefor combining cutting and forming operations
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49117—Conductor or circuit manufacturing
    • Y10T29/49121—Beam lead frame or beam lead device
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49117—Conductor or circuit manufacturing
    • Y10T29/49124—On flat or curved insulated base, e.g., printed circuit, etc.
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49117—Conductor or circuit manufacturing
    • Y10T29/49124—On flat or curved insulated base, e.g., printed circuit, etc.
    • Y10T29/49155—Manufacturing circuit on or in base
    • Y10T29/49165—Manufacturing circuit on or in base by forming conductive walled aperture in base

Definitions

  • the invention relates to a method and to a device which can be used for the manufacture of perforated films or foils.
  • films or foils for example plastic films, metal foils or plastic film/metal foil laminates are provided with a number of holes, in which case the holes frequently should have only a small hole diameter.
  • various methods have been known for the manufacture of perforated films or foils.
  • Document DE 299 08 254 U1 discloses the manufacture of perforated films or foils with the use of two contra-directionally rotating rollers, between which the film to be perforated is passed.
  • the rollers are provided with teeth having cutting edges that form short tears that are more or less widened by the wedge shape of the teeth.
  • Document JP 2001 001 007 A discloses a method for the manufacture of a perforated metal foil with the use of a profiled roller and an elastic support.
  • the metal foil that is to be perforated is placed on the elastic support, across which the profiled roller is rolled.
  • sections of the elastic support penetrate cutouts of the roller and thus separate sections of foil, thus removing them from the foil. This is a punching process.
  • thin metal sheets e.g., metal foils that are not too thin
  • piercing dies in which case each piercing die is associated—on the other side of the foil—with a cutting plate having a cutting opening that forms a cutting gap with the piercing die.
  • the object of the invention is to provide a method with which perforated films or foils can be manufactured in a simple and economical manner.
  • first holes are produced in the film, e.g., in that the film or foil is pierced at several locations. Then, the edges of the resultant holes of the film or foil are compressed.
  • short film or foil tags or film or foil flaps projecting from the edges of the hole will not re-close the hole that has formed. Rather, these tags or flaps are deformed in such a manner that they, even if they were to slightly relax in an elastic manner, could no longer close the resultant hole.
  • This method is suitable for metal foils and plastic films, or for plastic film/metal foil laminates, such as, for example, metal-coated plastic films, or metal foils having a plastic coating, paper having a metal coating, paper having a plastic coating, or varnished films or foils of different materials.
  • the thickness of the film or foil may vary within wide limits.
  • the method is particularly suitable for process films or foils having a thickness of a few tens of micrometers, for example, 50 ⁇ m.
  • the film or foil may be provided with holes having a diameter of less or greater than the thickness of the film or foil. For example, an aluminum foil having a thickness of 50 ⁇ m can be pierced with holes having a diameter of 100 ⁇ m.
  • the hole While the hole is initially opened during the step of piercing the foil, the hole is fixed during the step of crimping of the edge. As a result of this, the shape of the hole may be maintained or modified, depending on process management. The shape of the hole can largely be fixed or even be left to incidental process influences.
  • the produced holes may essentially be round or polygonal or have an irregular form.
  • the shape of the hole can be affected by the cross-sectional configuration of a needle-like tool for piercing the film or foil, and/or—if said tool does not have a circular cross-section—can be affected by the alignment of the cross-section of the tool relative to the advance direction of the film or foil.
  • the shape of the hole can be affected by the way the edges of the hole are crimped.
  • the holes are produced with needle-like tools that have a tip and a conically enlarging section.
  • the tool is further moved in axial direction, whereby the resultant hole is widened.
  • the thusly displaced material forms flaps or tags which project from the film or foil.
  • flaps or tags are pressed against the reverse side of the film or are pressed into said reverse side.
  • the resultant hole edges are relatively smooth. They essentially consist of former surface parts of the film or foil that has been pulled into the hole. Likewise, the reverse side of the film or foil is mostly smooth due to the crimping operation.
  • Another object of the invention is to provide a device for the manufacture of perforated films or foils.
  • An appropriate device comprises means for puncturing the film or foil, as well as means for the preferably non-moving or, optionally, moving support of the film or foil during the piercing operation.
  • a means for crimping the edges of the generated holes is provided.
  • the means for the compression of the edges of the generated holes permits a fixation of the holes that have been produced by a piercing process, so that said holes cannot involuntarily close.
  • the holes are fixed as to their form and diameter.
  • the means for piercing the film or foil preferably is a tool having a longitudinal working part with a tip with—extending therefrom—a progressively enlarging cross-section of the working part.
  • the working part has—at least in part, or even in full, a conical configuration.
  • the tip of the working part may be configured as a point or as a cutting edge. If it is a pointed tip, the tip consists of a spherical section or a similarly configured surface area having a very small radius.
  • the working part terminates in a straight or curved edge that creates a small cut in the film or foil during the piercing operation, said cut being widened by the working part.
  • the tool can perform a linear back and forth movement in axial direction.
  • a rotating machine element e.g., a roller
  • a support means for the film or foil is not necessary.
  • the support means e.g., may also be an air cushion.
  • the tip By designing the tip as a cutting edge and by aligning the cutting edges relative to the material transport direction of the film or foil, for example, along said film or foil, the position of the flaps or tags created on the film or foil by the piercing tools can be fixed in a manner favorable for the subsequent crimping operation in order to push the flaps or tags back onto the reverse side of the film or foil, however, not into the pierced hole.
  • the working part of the tool may have a circular cross-section, a knife-type cross-section, a polygonal cross-section or another cross-section. Knife-type and polygonal cross-sections permit the targeted fixation of the positions of tags or flaps that have initially formed on the hole edge.
  • a knife-type cross-section e.g., is a narrow two-corner cross section (two corners and edges bent away from each other) or a triangular or polygonal cross-section having at least one very acute angle (e.g., a narrow rhombus).
  • the working part may have a section with a constant cross-section. This is advantageous when the size of the pierced hole is to be independent of the stroke width of the tool. If the piercing operation is restricted to the conical section of the working part, the stroke width can be used to control the hole size.
  • the film or foil When it is perforated, the film or foil is placed on the means for supporting it, for example, a support table.
  • this table is provided with openings into which move the needles or other tools.
  • the openings Preferably, the openings have a diameter that is clearly greater than the diameter of the working part associated with the respective opening.
  • the diameter has a size that prevents a cutting gap from forming.
  • the annular space between the working part and the wall of the opening has a width that is greater than the thickness of the film or foil in order to prevent the hole edges that have been pierced in the opening from being pinched.
  • the means for crimping the edges of the holes has preferably two elements with pressure surfaces, between which the film or foil is pressed.
  • the elements may be arranged so that they can be moved in linear direction or so that they can be rotated.
  • the elements can optionally be designed in a stiff or even flexible manner. For example, they may represent a stiff or an elastic support, an associate stiff or flexible stamp, as well as represent stiff or flexible rollers.
  • a transport device In order to continuously move the film or foil or intermittently consistent with the cycle of the piercing movement of the needle-like tools, a transport device is preferably provided.
  • the transport device may, at the same time, be the means for crimping the edges of the produced holes in a modular unit.
  • two rollers which intermittently advance the film or foil and between which the film or foil is moving, may at the same time crimp the edges of the holes.
  • clamping jaws that compress the film or foil may periodically clamp the film or foil in place and intermittently advance the film or foil.
  • FIG. 1 is an illustration, partially in section, of a device for the perforation of a film or foil
  • FIG. 2 is a schematic view of a section, on an enlarged scale, of the device in accordance with FIG. 1 , before the production of a hole;
  • FIGS. 3 and 4 are a schematic illustration, vertically in section, of the device in accordance with FIG. 2 in different stages during the production of a hole;
  • FIG. 5 is the device in accordance with FIGS. 2 through 4 , after the production of the hole;
  • FIG. 6 is the part belonging to the device in accordance with FIG. 1 , for crimping the hole edges, before crimping the hole edges;
  • FIG. 7 is the device part in accordance with FIG. 6 , while crimping the hole edges;
  • FIG. 8 is an illustration of the hole, in vertical section, of the film or foil with the produced perforation, after crimping;
  • FIG. 9 is a side view of a section of the working part of the tool for the production of a hole.
  • FIGS. 10 to 14 are various configurations of the tip and of the cross-section of the working part in accordance with FIG. 9 , viewed in the direction onto the tip.
  • FIG. 1 is a schematic illustration of a device 1 that is used for the perforation of a film or foil 2 that is guided as a film or foil web through the device 1 .
  • the film or foil 2 is wound, e.g., on a roll 3 which is supported by a pull-off device 4 and is driven to rotate, in a specified manner if necessary.
  • the pull-off device 4 may act as the transport device for the intermittent movement of the film or foil 2 .
  • claws or rollers may be provided which advance the film or foil 2 in an intermittent manner.
  • the device 1 comprises a means 5 for piercing the film or foil 2 .
  • the means 5 comprises a support means designed as a lower tool 6 .
  • the latter is designed as a perforated plate, in which case the film or foil 2 preferably slides across the flat upper side of said plate.
  • the upper side of the perforated plate represents a support surface 7 for the film or foil 2 .
  • the means 5 comprises an upper tool 8 with a tool guide plate 9 having a preferably flat underside.
  • the tool guide plate 9 forms a gap together with the support surface 7 .
  • the tool guide plate 9 has openings 10 , opposite which openings 11 in the lower tool 6 are provided.
  • the diameters of the openings 10 , 11 may be the same or may be different from each other.
  • the upper tool 8 has a head holding plate 12 which holds the heads 13 of needle-like tools 14 used for piercing the film or foil.
  • the tools 14 comprise, for example, a cylindrical shaft 15 that extends into the openings 10 and is guided in these in a sliding manner. Extending from the shaft 15 is a working part 16 having a diameter that is preferably substantially smaller than the diameter of the opening 11 .
  • the working part 16 is preferably a straight section that extends in longitudinal direction relative to the shaft 15 and terminates via a conical section 17 in a tip 18 ( FIG. 2 ).
  • the head holding plate 12 and the tool guide plate 9 are supported, so that they can be moved relative to each other, in which case the tool holding plate 9 is elastically tensioned against an abutment away from the head holding plate 12 .
  • the head holding plate 12 is connected to a not specifically illustrated drive which is designed to impart a back-and-forth movement as indicated by an arrow in FIG. 1 .
  • the travel is large enough so that, on the one hand, the tool guide plate 9 can lift off the film or foil and that, on the other hand, the working parts 16 of the tools 14 can pierce the film or foil 2 .
  • the device 1 comprises a means 19 for crimping the film or foil 2 in order to fix the produced holes in position.
  • this means 19 consists of a stationary element 20 and a movably arranged element 21 , which have, on their sides that face each other, preferably flat pressure surfaces 22 , 23 .
  • the element 20 is preferably arranged in a stationary manner next to the preferably also stationary lower tool 6 , or is a part thereof, the element 21 —as indicated by an arrow in FIG. 1 —can be moved toward the element 20 and away therefrom.
  • the element may be arranged in a rigid or resilient, for example, spring-biased manner and/or be connected to the head holding plate 12 or to its own drive.
  • the device 1 is used for the perforation of plastic films or metal foils, for example, aluminum foils, or for the perforation of laminate films or foils that consist of plastic material, metal or even of other materials.
  • said device is used for the perforation of films or foils of a material that can be plastically deformed.
  • the head plate 2 holds appropriate tools 14 in several rows, which extend preferably across the entire width of the film or foil 2 , or at least across the width of the area that is to be perforated.
  • the tools 14 of the individual rows (for example, ten rows) can be offset with respect to each other, or they may be arranged in another pattern.
  • the film or foil 2 is perforated in the following manner:
  • the film or foil 2 is placed in the gap between the upper tool 8 and the lower tool 6 , as well as between the elements 20 and 21 .
  • the end of the film or foil 2 is grasped by the pick-off device 4 .
  • the film or foil 2 is supported by the support surface 7 , which, consequently, forms a means 24 for supporting the film or foil 2 during the subsequent piercing operation.
  • the head plate 12 In order to perform the piercing operation or the piercing step, the head plate 12 is moved in the direction toward the lower tool 6 until the tool guide plate 9 clamps the film or foil 2 against the support surface 7 .
  • FIG. 2 shows this mode.
  • the head plate 12 While the plate 9 supports the film or foil 2 the head plate 12 is moved further downward, so that the tip 18 pierces the film or foil 2 , as illustrated by FIG. 3 .
  • a puncture hole is formed, said hole being widened by the conical section 17 when the tool 14 continues to move downward into the opening 11 .
  • the tool 14 is moved far enough for he cylindrical section of the working part 16 to enter the hole 25 now created in the film or foil 2 .
  • the film or foil material that is forced out of the hole 25 hangs downward in the form of a tag or flap 26 into the opening 11 and thus forms an edge 27 of the hole 25 ( FIG. 4 ).
  • the hole 25 is completely open.
  • the upper tool 8 is again moved away from the lower tool 6 , whereby, as illustrated by FIG. 5 , the working part 16 and the tip 18 are first moved out of the hole 25 , and the tool guide plate 9 is lifted off the film or foil 2 .
  • said plate carries the film or foil 2 somewhat along, so that the film or foil is also lifted off the support surface 7 .
  • this operation can be aided by injecting air (pressurized air) in the opening 11 or in separate blow openings that extend through the support surface 7 .
  • the tags 26 are cramped and folded onto the reverse side of the film or foil 2 that had been positioned on the support surface 7 when the hole 25 was opened. In so doing, the tags 26 are plastically deformed at least to such an extent that they will not move back into the cross-section of the hole 25 . They may also be pressed flat against the reverse side of the film or foil. There, they may be positioned loosely or they may be cemented to the reverse side or cold-welded thereto. It is possible to aid the pressing operation by additional measures, for example, by the application of ultrasound to at least one of the elements 20 , 21 , by the application of heat or by material fixing agents, for example, fixing varnishes or adhesive varnishes that are to be applied to the reverse side of the foil or film around the holes 25 .
  • FIGS. 9 and 10 show a first embodiment of the tool 14 as can be used for the perforation of the film or foil.
  • the working part 16 is essentially cylindrical, whereby the section 17 forms a circular cone having a rounded tip 18 .
  • FIG. 10 shows the working part 16 of the tool 14 , with a view on the tip 18 .
  • the tip 18 have a different configuration as shown by FIGS. 11 through 14 , in particular.
  • the tip 18 is configured as a cutting edge, whereby the cutting edge may be relatively short ( FIG. 11 ) or may be long enough so that it corresponds approximately to the diameter of the working part 16 ( FIG. 12 ).
  • the section 17 has a knife-type cross-section, which, beginning on an end-side cutting edge, gradually terminates in the circular section of the working part 16 .
  • the tip 18 may also have a pyramid shape in section 17 .
  • the cross-section of section 17 thus is bordered by a polygonal configuration, at least in some parts.
  • FIG. 14 it is also possible to design the section 17 , as well as the remaining part of the working part 16 , in a polygonal configuration, for example, in triangular, square or rectangular configuration. In this, way non-round holes 25 can be produced.
  • the means for piercing the film or foil can be, as illustrated, a needle-like tool 14 or also any other means suitable for piercing the film or foil 2 , such as, for example a sharp air jet or water jet, miscellaneous fluids or pressure waves generated therein, flexible elements or the like.
  • the means for crimping the edges of the produced holes may be rigid, flat or non-flat surfaces provided on appropriate elements, or may also be non-concrete means, such as, for example, fluids or pressure waves generated in fluids.
  • a device for the manufacture of perforated films or foils comprises a means 5 for the perforation of the film or foil 2 , as well as a means 19 for crimping the edges 27 of the thusly produced holes 25 .
  • the holes 25 are fixed after having been opened.
  • Punching tools for cutting the perforation out of the film or foil 2 are not required for the production of the holes 25 . Rather, the desired hole 25 is first created as puncture, or as a cut, and is then widened during the perforating operation.
  • the material bent out of the plane of the film or foil is fixed in place in such a manner that it will not close the pierced hole again.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
US11/727,490 2006-03-29 2007-03-27 Method and device for the manufacture of perforated films or foils Abandoned US20070227217A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP06006503.4 2006-03-29
EP06006503A EP1839825A1 (de) 2006-03-29 2006-03-29 Verfahren und Vorrichtung zur Herstellung von perforierten Folien

Publications (1)

Publication Number Publication Date
US20070227217A1 true US20070227217A1 (en) 2007-10-04

Family

ID=36699203

Family Applications (1)

Application Number Title Priority Date Filing Date
US11/727,490 Abandoned US20070227217A1 (en) 2006-03-29 2007-03-27 Method and device for the manufacture of perforated films or foils

Country Status (5)

Country Link
US (1) US20070227217A1 (zh)
EP (1) EP1839825A1 (zh)
JP (1) JP2007290117A (zh)
KR (1) KR20070098618A (zh)
TW (1) TW200808507A (zh)

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CN103659901A (zh) * 2012-09-24 2014-03-26 吴悠 一种物料的刺切加工设备、刺切刀具组件和扁平状物料
US8951455B2 (en) 2011-02-23 2015-02-10 Röchling Automotive SE & Co. KG Method for reinforcing a hole edge region workpiece with a hole with reinforced hole edge region hole edge reinforcing device
US20160367768A1 (en) * 2015-06-22 2016-12-22 Gerresheimer Regensburg Gmbh Device for Opening Capsules
CN108750228A (zh) * 2018-08-07 2018-11-06 温州锐志包装机械有限公司 包装袋刺孔装置
CN109365859A (zh) * 2018-11-02 2019-02-22 张霁圆 一种用于机械加工的多功能开孔装置
US10279547B2 (en) * 2014-08-21 2019-05-07 Ford Global Technologies, Llc Device and method of forming decorative panel
US10759077B2 (en) 2012-01-20 2020-09-01 Profil Verbindungstechnik Gmbh & Co. Kg Method for the manufacture of a hole in a component consisting of a composite material

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EP2179824A1 (en) * 2008-10-23 2010-04-28 Wardenburg Malgo Engineering B.V. Device for punching series of microperforations in film material
DE102012001068A1 (de) * 2012-01-20 2013-07-25 Profil Verbindungstechnik Gmbh & Co. Kg Verfahren zur Anbringung eines hohlen Elements wie ein Hohlniet oder ein Mutterelement an einem aus einem Verbundwerkstoff bestehenden Bauteil
CN103112044B (zh) * 2012-12-08 2015-03-04 佘玲 滚压式引流包裹材料孔眼生成器
WO2016129803A1 (ko) * 2015-02-13 2016-08-18 (주)천일 가열조리 식품 포장 파우치, 그 제조 장치 및 방법
CN106985202B (zh) * 2017-05-27 2018-08-24 台州添盈工艺制品有限公司 一种筒状pvc塑料薄膜专用精确打孔设备
CN106985189B (zh) * 2017-05-27 2018-09-04 台州添盈工艺制品有限公司 一种用于筒状聚丙烯塑料薄膜的精确切割设备
CN109015838A (zh) * 2018-06-27 2018-12-18 灵璧县楚汉风纸业有限公司 一种纸板的高效打孔装置
JP6791275B2 (ja) * 2019-01-16 2020-11-25 ブラザー工業株式会社 加工装置及び保持部材
CN109877907B (zh) * 2019-04-19 2023-09-29 涿州皓原箔业有限公司 一种孔状铝箔加工装置及其加工方法

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