EP1219364B1 - Metal sheet perforating disk roll, metal sheet perforating device using the roll and metal sheet perforating method - Google Patents

Metal sheet perforating disk roll, metal sheet perforating device using the roll and metal sheet perforating method Download PDF

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Publication number
EP1219364B1
EP1219364B1 EP99940658A EP99940658A EP1219364B1 EP 1219364 B1 EP1219364 B1 EP 1219364B1 EP 99940658 A EP99940658 A EP 99940658A EP 99940658 A EP99940658 A EP 99940658A EP 1219364 B1 EP1219364 B1 EP 1219364B1
Authority
EP
European Patent Office
Prior art keywords
metal sheet
roll
perforating
shape
disk
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.)
Expired - Lifetime
Application number
EP99940658A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1219364A1 (en
EP1219364A4 (en
Inventor
Keiichi Toyo Kohan Co. Ltd SHIMIZU
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.)
Toyo Kohan Co Ltd
Original Assignee
Toyo Kohan Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toyo Kohan Co Ltd filed Critical Toyo Kohan Co Ltd
Publication of EP1219364A1 publication Critical patent/EP1219364A1/en
Publication of EP1219364A4 publication Critical patent/EP1219364A4/en
Application granted granted Critical
Publication of EP1219364B1 publication Critical patent/EP1219364B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
    • B21D28/12—Punching using rotatable carriers
    • 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
    • B26F1/02—Perforating by punching, e.g. with relatively-reciprocating punch and bed
    • B26F1/06—Perforating by punching, e.g. with relatively-reciprocating punch and bed with punching tools moving with the work
    • B26F1/10—Roller type punches
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/24—Perforating, i.e. punching holes
    • B21D28/36—Perforating, i.e. punching holes using rotatable work or tool holders
    • 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
    • B26F1/02—Perforating by punching, e.g. with relatively-reciprocating punch and bed
    • B26F1/14—Punching tools; Punching dies

Definitions

  • This invention relates to a metal sheet perforating disk roll for making holes successively in a long belt-like metal sheet or metal foil, to a metal sheet perforating device and to perforated a metal sheet perforating method which use the same roll according to the preambles of claim 1, claim 4 and claim 9 respectively (see e.g. DE 823 694 C).
  • the drilled metal sheet for a secondary battery electrode base is wound with an active material deposited on a surface thereof, and loaded into a battery case.
  • the holes are made in the metal sheet for the purpose of giving an anchoring effect to the active material to promote the adhesion thereof to the metal sheet, and also filling the holes with the active material.
  • a method of drilling a metal sheet by using a dieing out press has heretofore been generally used as a drilled metal sheet manufacturing method.
  • a metal sheet to be drilled is necessarily fed intermittently, and necessarily stopped when the metal sheet is pressed.
  • Japanese Patent Laid-Open No. 133936/1985 discloses a method of continuously manufacturing drilled metal sheets by rotating a drilling roller having a multiplicity of projections as a method of improving the productivity of drilled metal sheets by increasing the drilling speed.
  • the manufacturing of this metal sheet is done in the following manner. Namely, first, a metal sheet is passed continuously between a roller provided with a multiplicity of saw-tooth-like projections on an outer circumferential surface thereof and a receiving roller, and holes are thereby drilled by the projections with burrs raised at the same time.
  • the drilled metal sheet advances . continuously, and the burrs impinge upon an end of a scratch jig provided ahead of the drilled metal sheet, the burrs being thereby folded back.
  • the metal sheet further advances continuously, and is fed to a rolling roller provided ahead thereof.
  • the metal sheet is then rolled, and the folded-back portions thereof eat into the metal sheet, so that a burrless drilled metal sheet is formed.
  • the thickness of the burr-folded-back portions becomes nearly two times that of the original metal sheet.
  • this metal sheet is used as a drilled metal sheet for a secondary battery electrode base, the volume of the metal sheet itself increases when the metal sheet with an active material deposited on a surface thereof and wound is loaded into a battery case, and the quantity of the active material loaded into the battery jar therefore decreases correspondingly, so that this method is not preferable to increase the capacity of the battery.
  • the thickness of the folded-back portions is set equal to that of the other portion of the metal sheet by increasing the rolling force, the folded-back portions only are rolled extremely and elongated since the thickness of these portions is nearly two times as large as that of the other portion of the metal sheet. Therefore, the distance between the holes made by a drilling operation increases to cause the density of the holes to decrease.
  • a metal sheet having such holes is used as a drilled metal sheet for a secondary battery base, the anchoring effect becomes insufficient, and the quantity of the active material packed in the holes decreases, so that such a drilled metal sheet is not preferable.
  • the present invention has been made in view of the above-mentioned circumstances, and provides a metal sheet perforating disk roll capable of perforating a multiplicity of uniform holes successively in a long belt-like metal sheet, especially, very thin metal foil used as a secondary battery electrode base while keeping the thickness of the metal sheet uniform; and a metal sheet perforating device and a metal sheet perforating method which use the disk roll.
  • the invention provides:
  • a metal sheet drilling or perforating or punching, respectively, disk roll according to the present invention is provided so as to make a multiplicity of holes in a metal sheet or metal foil of around 0.02 to 0.2 mm in thickness.
  • a disk roll 1 known in the art, is provided on an outer circumferential surface thereof with a plurality of drilling or perforating blades 2, respectively, in a circumferentially spaced manner and in a radially outwardly projecting state.
  • each drilling blade on the outer circumferential surface of the disk roll i.e. a cross-sectional shape of a drilled hole is set to a geometrical shape surrounded by one closed line. This shape is set rectangular.
  • each drilling blade 2 is set concave so that the height of front and rear edges 21, 22 thereof constituting both circumferential end portions of the drilling blade is larger than that of the other portions thereof with the height of the drilling blade becoming gradually smaller from the front and rear edges 21, 22 toward a central portion thereof.
  • the drilling blade 2 is formed so that both side edges 23 thereof, which correspond to the portions of both-side closed lines opposed to each other in the circumferential direction of the disk roll 1, project lower than an imaginary straight line 24 connecting together the front and rear edges 21, 22 which correspond to the portions of both-side closed lines which are opposed to each other in the direction of the thickness of the disk roll 1.
  • the shape in plan of the drilling blade 2, i.e. the cross-sectional shape of the drilled hole can also be set to a substantially rectangular shape with its four corner portions rounded besides an accurate rectangular shape having the front edge 21, rear edge 22 and side edges 23 as shown in Fig. 2.
  • the front and rear edges 21 and 22 constituting the two circumferential end portions on the outer circumferential surface of the disk roll 1 of the drilling blade 2 can be formed so that the height of the front edge 21 thereof, a circumferentially preceding end portion which eats into a metal sheet or metal foil (which will hereinafter be referred to generically as a metal sheet) 10 first in accordance with the rotation of the disk roll 1 as shown in Fig. 3 is smaller than that of the rear edge 22 thereof, a circumferentially posterior end portion which is thereafter eats into the metal sheet 10. Since the shape in side elevation of the driving blade 2 is set in this manner, the front edge 21 and rear edge 22 can be made so that these edges eat into the metal sheet 10 at once as shown in Fig. 3.
  • the shape in plan of the drilling blade 2 can also be formed to other shapes, for example, desired geometric shapes, such as an elongated circular shape, an elliptic shape, a right circular shape, a rhomboidal shape, or a substantially rhomboidal shape with its four corner portions rounded, etc. in accordance with the property of the metal sheet instead of setting the shape to the above-mentioned rectangular shape or a substantially rectangular shape.
  • desired geometric shapes such as an elongated circular shape, an elliptic shape, a right circular shape, a rhomboidal shape, or a substantially rhomboidal shape with its four corner portions rounded, etc.
  • the metal sheet drilling device includes a drilling unit 20, and upper and lower pinch rolls 6a, 6b and 7a, 7b provided on the front side and rear side of the drilling unit 20 as tensile force application means, and in the form of tensile force application units 30.
  • the drilling unit 20 is formed by providing upper and lower rolls 11, 12 while on the outer circumferential, surface of the upper roll 11 are provided with drilling blades 2 in a circumferentially spaced manner.
  • upper and lower bridle rolls 16a, 16b and 17a, 17b may also be used as the tensile force application means.
  • the drilling unit 20 can have a construction shown, for example, in Fig. 5.
  • a pair of disk rolls 3 the radius of each of which is set shorter than a distance between the center of the metal sheet drilling disk roll 1 and the lowest portion (lowest portion of the side edge 23) of the edge of the drilling blade 2 by at least a length corresponding to the thickness of the metal sheet 10 are connected coaxially as upper side guide rolls to both sides of the metal sheet driving disk roll 1 to form an upper roll unit 11.
  • a disk roll the thickness of which is slightly larger than that of a disk of the metal sheet drilling disk roll 1 is provided as a guide roll 4, and a pair of disk rolls 5 the radius of each of which is set larger than that of the guide roll 4 by at least a length corresponding to the sum of the thickness of the metal sheet 10 and a difference between an amount of projection of the highest portion (front edge 21 or rear edge 22) of the drilling blade 2 and that of projection of the lowest portion (side edge 23) thereof are connected to both sides of the guide roll coaxially to form a lower roll unit 12.
  • the drilling unit 20 of the metal sheet drilling device is shown in Fig. 7.
  • the drilling unit 20 is formed by the metal sheet drilling disk roll 1 and guide roll 4 arranged in a vertically symmetric manner with respect to the center of the metal sheet 10.
  • the guide roll 4 having a thickness slightly larger than that of the disk of the metal sheet drilling disk roll 1 is provided on the portions of the outer circumferential surface thereof which are opposed to the plural drilling blades 2 formed so as to project in the radially outward direction with a plurality of recesses 42 each of which has a cross-sectional shape identical with the shape in plan (i.e. the shape of a cross section of a drilled hole) of the drilling blade 2.
  • the guide roll 4 of an elastic material, such as rubber can also be formed of a disk having a flat outer circumferential surface without forming a recessed portion 42 having a cross section identical with that of the drilled hole as mentioned above.
  • the drilling blade 2 provided on the metal sheet drilling disk roll 1 eats into the outer circumferential portion of the upper roll unit 12 during a drilling operation, and the outer circumferential portion of the guide roll 4 is elastically deformed in accordance with the shape of the drilling blade 2.
  • the hole drilling operation finishes to cause the drilling blade 2 to be disengaged from the guide roll 4 the shape of the drilling blade 2 is restored to that of a disk having the original flat outer circumferential surface.
  • a metal sheet drilling device can also be formed by connecting a plurality of sets of upper rolls 11 and lower rolls 12, which constitute the above-mentioned drilling unit 20, to each other coaxially in the axial direction of each roll shaft as shown in Fig. 8.
  • the drilling blades 2 in the present invention are formed on the outer circumferential surface of the disk roll 1 in a radially outwardly projecting state so as to be spaced at regular intervals in the circumferential direction as shown in Fig. 1.
  • the metal sheet 10 provided with undrilled hole portions at regular intervals is'subjected to drilling. It is also possible to provide some of adjacent drilling blades 2 at intervals larger than those of the other thereof instead of providing the drilling blades on the outer circumferential surface of the metal sheet at regular intervals in the circumferential direction thereof.
  • the sheet drilling device formed as mentioned above by connecting a plurality of sets of the upper roll 11 and lower roll 12, which constitute the drilling unit 20, to each other coaxially in the axial direction of each roll, is used to drill holes in the metal sheet 10 in a staggered manner in the widthwise direction thereof, an object portion of the metal sheet 10 can be cut irrespective of the presence of the staggeringly arranged drilled portions on the metal sheet.
  • the metal sheet 10 is used as a core of a battery, it is possible to provide undrilled portions, the intervals of which are larger than those of other portions, at predetermined intervals so that the distance between drilled portions agrees with the length of the core needed for one battery. This enables the metal sheet 10 to be cut without causing both of lengthwise end portions thereof to fall on drilled portions. Such intervals of the undrilled portions that are larger than those of the other undrilled portions can be changed arbitrarily by selecting the diameter of the disk roll.
  • a method of making a multiplicity of holes successively in a metal sheet 10 by using the metal sheet drilling disk roll 1 according to the present invention and the metal sheet drilling device according to the present invention will now be described with a case where the shape in plan (cross-sectional shape of a drilled hole) of a drilling blade 2 of the metal sheet drilling disk roll 1 is rectangular taken as an example will now be described with reference to Fig. 4.
  • a metal sheet of around 0.02 to 0.2 mm in thickness, and, especially, extremely thin metal foil of not larger than 0.1 mm in thickness is drilled.
  • the metal sheet drilling device includes as shown in Fig. 6 a drilling unit 20, a pair of pinch rolls 6a and 6b provided ahead of the drilling unit 20, and tensile force application units 30 formed of a pair of pinch rolls 7a and 7b provided at the back of the drilling unit 20.
  • the pinch rolls may be replaced with upper and lower bridle rolls as shown in Fig. 9.
  • a tensile force is applied to the portion of the metal sheet 10 which is between the pinch rolls 6a and 6b and 7a and 7b which constitute tensile force application means.
  • the metal sheet 10 is passed continuously between the upper and lower rolls 6a, 6b and upper and lower rolls 7a, 7b which constitute the drilling unit 20 and tensile force application units 30 with the tensile force applied condition maintained.
  • the height of the front edge 21 forming a preceding circumferential end portion which eats into the metal sheet 10 first in accordance with the rotation of the disk roll 1 is set lower than that of the rear edge 22 forming a posterior circumferential end portion which thereafter eats into the metal sheet 10 as shown in Fig. 3, it becomes possible to have the front edge 21 and rear edge 22 eaten into the metal sheet 10 at once, and make rectangular holes in the metal sheet 10 more accurately and reliably.
  • the rigidity of the metal sheet lowers even when the height of the portions constituting intermediate portions between the front edge 21 and rear edge 22 is set lower than those of the front and rear edges 21, 22 as shown in Fig. 2, i.e., even when a metal sheet drilling disk roll 1 in which the portion of the blade corresponding to the side edge 23 projects lower than an imaginary straight line connecting together the apexes of the portions of the blade which correspond to the front edge 21 and rear edge 22 is used.
  • the upper and lower bridle rolls 16a and 16b and 17a and 17b, which serve as tensile force application means, and upper roll 11 and lower roll 12 are provided in a positional relation which permits the metal sheet to advance along a part of the outer circumference of the guide roll 4 (lower roll 12), and not in the positional relation shown in Fig. 6, i.e., not in the positional relation in which the metal sheet 10 is moved linearly between the drilling unit 20 and tensile force application units 30 as shown in Fig. 6.
  • Fig. 5 and Fig. 7 show a case where holes are formed in one row in a metal sheet 10.
  • a metal sheet drilling device by arranging a plurality of sets of lower rolls 12 and upper rolls 11, which constitute a metal sheet drilling unit, coaxially in the axial direction of the rolls, and make in a metal sheet 10 a plurality of widthwise arranged rows of substantially rectangular holes successively in a lengthwise spaced manner.
  • the intervals of drilling blades 2 of adjacent metal sheet drilling disk rolls 1 are mutually regulated, making holes in an arbitrary arrangement, such as a staggered arrangement and a latticed arrangement and the like can be done.
  • the drilled metal sheet having a multiplicity of holes perforated according to the present invention can be made by using the above-mentioned metal sheet drilling device having a metal sheet drilling disk roll 1, and the above-mentioned metal sheet drilling method.
  • the drilled metal sheet having a multiplicity of holes perforated according to the present invention can be formed by making uniform holes successively and accurately in, especially, metal foil of an extremely small thickness of not larger than 0.1 mm. Since such a drilled metal sheet does not have projecting portions, such as folded-back portions and the like, the metal sheet is suitable for a base for a secondary battery electrode.
  • Each of the drilling blades was formed in a projecting manner so that the height (maximum height) of the rectangular front edge and rear edge projecting at front and rear portions of the blade with respect to the direction of the thickness of the disk roll was 1 mm with the height (minimum height) of the centers of side edges projecting at left and right portions of the blade with respect to the circumferential direction 0.5 mm so as to vary the height of the front edge - the centers of the side edges ⁇ the rear edge continuously and arcuately.
  • 31 sets of disk rolls (upper side guide rolls) of 80 mm in diameter formed of alloy tool steel (SKS1) of 1 mm in thickness were prepared.
  • the metal sheet drilling disk rolls and side guide rolls were arranged alternately and coaxially so that the rolls at both ends were side guide rolls with the distance between each side guide roll and each metal sheet drilling disk roll becoming 0.05 mm, by inserting spaces therebetween and thereby regulating the distance, to form upper rolls.
  • the upper rolls and lower rolls thus prepared were engaged with each other to form a drilling unit.
  • the drilling blades of adjacent upper rolls were lined so as to stagger the blades thereof by a half pitch in the circumferential direction so that the holes formed after a drilling operation were arranged in a staggered manner.
  • a pair of bridle rolls were provided at each of the front and rear sides of this drilling unit in such positional relation that permitted a metal sheet to advance so as to wind round a part of the outer circumference of the lower roll of the drilling unit as shown in Fig. 9, to form tensile force application units.
  • the rotational speed of the front bridle rolls was set slightly higher than that of the rear bridle rolls so that a tensile force be applied at all times to the portion of the metal sheet which is between the two bridle rolls.
  • the metal sheet drilling device was formed.
  • a long belt-like nickel plated steel foil of 0.035 mm in thickness and 65 mm in width was then drilled by using the above-mentioned metal sheet drilling device.
  • the rotational speeds of the bridle rolls in front of the tensile force application unit, bridle roll at the back thereof and upper and lower rolls of the drilling unit were set respectively so that the steel foil advances at a speed of 1 m/sec.
  • the rotational speeds of the bridle rollers were set so that 2 kgf tensile force was exerted on the portion of the metal sheet which was between the front bridle rolls and rear bridle rolls.
  • the present invention relates to a metal sheet drilling device and a metal sheet drilling method which use a metal sheet driving disk roll provided on an outer circumferential surface thereof with a plurality of drilling blades arranged in a circumferentially spaced manner and in a radially projecting state.
  • Using the metal sheet drilling device and metal sheet drilling method according to the present invention has enabled a multiplicity of uniform holes of a constant depth to be made successively in a long belt-like metal sheet, especially, long belt-like metal foil used for a base for a secondary battery electrode.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Cell Electrode Carriers And Collectors (AREA)
EP99940658A 1999-09-03 1999-09-03 Metal sheet perforating disk roll, metal sheet perforating device using the roll and metal sheet perforating method Expired - Lifetime EP1219364B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP1999/004799 WO2001017710A1 (fr) 1999-09-03 1999-09-03 Rouleau a disques de perforation pour toles, dispositif de perforation pour toles equipe dudit rouleau, procede de perforation de toles et tole metallique perforee

Publications (3)

Publication Number Publication Date
EP1219364A1 EP1219364A1 (en) 2002-07-03
EP1219364A4 EP1219364A4 (en) 2003-05-28
EP1219364B1 true EP1219364B1 (en) 2005-03-02

Family

ID=14236634

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99940658A Expired - Lifetime EP1219364B1 (en) 1999-09-03 1999-09-03 Metal sheet perforating disk roll, metal sheet perforating device using the roll and metal sheet perforating method

Country Status (7)

Country Link
EP (1) EP1219364B1 (ko)
KR (1) KR100604681B1 (ko)
CN (1) CN1163325C (ko)
AU (1) AU5448899A (ko)
CA (1) CA2383843C (ko)
DE (1) DE69924038T2 (ko)
WO (1) WO2001017710A1 (ko)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU215792U1 (ru) * 2022-09-19 2022-12-27 Общество с ограниченной ответственностью "Завод инженерных технологий в машиностроении" Устройство перфорирования тонких длинномерных заготовок

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4836351B2 (ja) * 2001-05-17 2011-12-14 パナソニック株式会社 アルカリ蓄電池用極板およびそれを用いたアルカリ蓄電池
EP1273365A1 (fr) * 2001-07-06 2003-01-08 Recherche Et Developpement Du Groupe Cockerill Sambre Outils rotatifs pour le perçage en ligne de produits profiles
JP5421087B2 (ja) * 2009-12-10 2014-02-19 大同工業株式会社 パンチユニット
JP6116828B2 (ja) * 2012-08-15 2017-04-19 東洋鋼鈑株式会社 金属板穿孔用円板状ロールおよび金属板穿孔装置
JP2014036977A (ja) * 2012-08-15 2014-02-27 Toyo Kohan Co Ltd 金属板穿孔装置
JP6406794B2 (ja) * 2012-08-15 2018-10-17 東洋鋼鈑株式会社 金属板穿孔装置
JP6307285B2 (ja) * 2014-01-22 2018-04-04 株式会社三井ハイテック 鉄心片の打ち抜き方法
CN105140542A (zh) * 2015-08-28 2015-12-09 张家港讴德电池技术有限公司 一种降低界面电阻的集流网及其制备方法

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DE823694C (de) * 1948-10-02 1951-12-06 Bosch Gmbh Robert Lochwerkzeug
US3209630A (en) * 1961-12-22 1965-10-05 Ibm Rotary punching device
DE1778094C3 (de) * 1968-03-28 1978-12-07 Fraenkische Isolierrohr- & Metallwaren-Werke, Gebr. Kirchner, 8729 Koenigsberg Vorrichtung zum fortlaufenden Lochen der Wandung von dünnwandigen Faltenrohren
US3543554A (en) * 1968-11-25 1970-12-01 Gen Motors Corp Apparatus for punching and forming articles from sheet stock
JPS5268851A (en) * 1975-12-05 1977-06-08 Tanazawa Hakkosha Kk Punching roller device
DE9017365U1 (de) * 1990-12-22 1992-01-30 Westaflexwerk GmbH & Co KG, 4830 Gütersloh Vorrichtung zum Lochen von Bändern aus Folien oder Blech

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU215792U1 (ru) * 2022-09-19 2022-12-27 Общество с ограниченной ответственностью "Завод инженерных технологий в машиностроении" Устройство перфорирования тонких длинномерных заготовок

Also Published As

Publication number Publication date
CA2383843A1 (en) 2001-03-15
CN1163325C (zh) 2004-08-25
CN1367723A (zh) 2002-09-04
EP1219364A1 (en) 2002-07-03
WO2001017710A1 (fr) 2001-03-15
KR20020030102A (ko) 2002-04-22
KR100604681B1 (ko) 2006-07-26
EP1219364A4 (en) 2003-05-28
DE69924038D1 (de) 2005-04-07
CA2383843C (en) 2007-05-29
DE69924038T2 (de) 2006-04-13
AU5448899A (en) 2001-04-10

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