US3698272A - Rotary air eject die-cutting assembly - Google Patents
Rotary air eject die-cutting assembly Download PDFInfo
- Publication number
- US3698272A US3698272A US3698272DA US3698272A US 3698272 A US3698272 A US 3698272A US 3698272D A US3698272D A US 3698272DA US 3698272 A US3698272 A US 3698272A
- Authority
- US
- United States
- Prior art keywords
- roll
- core portion
- aperture
- air
- port
- 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
Links
- 238000005520 cutting process Methods 0.000 title claims abstract description 57
- 239000000463 material Substances 0.000 claims abstract description 13
- 238000007789 sealing Methods 0.000 claims description 6
- 230000009471 action Effects 0.000 claims description 5
- 230000008878 coupling Effects 0.000 claims description 5
- 238000010168 coupling process Methods 0.000 claims description 5
- 238000005859 coupling reaction Methods 0.000 claims description 5
- 238000000926 separation method Methods 0.000 claims description 5
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 229920002313 fluoropolymer Polymers 0.000 claims description 4
- 239000011347 resin Substances 0.000 claims description 4
- 229920005989 resin Polymers 0.000 claims description 4
- 230000000452 restraining effect Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 3
- 210000002445 nipple Anatomy 0.000 description 3
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- 230000007246 mechanism Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 241000272470 Circus Species 0.000 description 1
- 239000004812 Fluorinated ethylene propylene Substances 0.000 description 1
- 239000002033 PVDF binder Substances 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 229910052729 chemical element Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- HQQADJVZYDDRJT-UHFFFAOYSA-N ethene;prop-1-ene Chemical group C=C.CC=C HQQADJVZYDDRJT-UHFFFAOYSA-N 0.000 description 1
- 229920009441 perflouroethylene propylene Polymers 0.000 description 1
- 229920002493 poly(chlorotrifluoroethylene) Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 239000005023 polychlorotrifluoroethylene (PCTFE) polymer Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
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- 239000012260 resinous material Substances 0.000 description 1
- 230000009528 severe injury Effects 0.000 description 1
Images
Classifications
-
- 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
- B26D7/18—Means for removing cut-out material or waste
- B26D7/1845—Means for removing cut-out material or waste by non mechanical means
- B26D7/1863—Means for removing cut-out material or waste by non mechanical means by suction
-
- 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
- Y10T83/00—Cutting
- Y10T83/202—With product handling means
- Y10T83/2066—By fluid current
- Y10T83/2068—Plural blasts directed against plural product pieces
Definitions
- ABSTRACT A rotary air eject die-cutting assembly utilizes an air delivery manifold having a cylindrical core portion that is fabricated of a relatively resiliently deformable material and is closely seated within the cavity of a journaled die-cutting roll.
- the roll has a cutting ele ment of closed configuration on its outside surface and an aperture that extends between the cutting element and the cavity.
- the core portion has an interior passageway and a generally radially extending port that is positioned for registry with the aperture of the roll, permitting air to flow through the passageway and the port, and out of the aperture, upon registry of the aperture and port.
- the type of open system described is also disadvantageous in failing to provide any means for control of the direction or instant of discharge, which causes haphazard release of scrap and blowing of previously ejected pieces about the vicinity of the die-cutting operation.
- the pieces of scrap tend to foul gears and other parts of the press, and often adhere to the rolls and thereby interfere with die-cutting.
- prior art systems are often subject to frequent disrepair, and tend to require undue attention to ensure reasonably consistent and efficient operation.
- Another object is to provide an assembly having the foregoing advantages and features, which is of relatively simple and inexpensive construction and which may be employed with existing equipment with little or no alteration thereto.
- Still another object of the invention is to provide an assembly wherein added support and bearing members for the manifold core portion are unnecessary, and which exhibits an increased useful life by virtue of diminished wear of its components parts.
- a further objective is to provide such an assembly wherein the effectiveness of the air ejection is maximized and the air loss is minimized by the attainment of improved sealing action between the roll and the manifold core portion seated therein.
- a rotary air eject die-cutting assembly comprising a diecutting roll adapted for journaling in a press and having a cylindrical cavity extending axially inwardly from one end thereof.
- the roll has a cutting element of closed configuration on its outside surface with at least one aperture extending from the cavity to a location on the outside surface within the confines of the cutting element.
- the aperture enables air flow between the cavity and the cutting element, and comprises substantially the only outlet for air therefrom.
- the assembly also includes an air delivery manifold which has a core member with a self-supporting, relatively resiliently deformable cylindrical portion inserted axially into the cavity of the roll from the one end thereof for relative rotation therebetween.
- the core portion is substantially free of added support and bearing members within the roll cavity; it is dimensioned and configured to seat therein with its outer surface in close proximity to the inside surface of the roll defining the corresponding portion of the cavity.
- the core portion also has an axially extending passageway therein with an outlet comprising at least one generally radially extending port opening at a point on the outer surface thereof in a location for registry with the one aperture of the roll.
- the manifold has an inlet communicating with the passageway of the core portion :and is substantially closed to air flow except through the inlet thereinto and the outlet therefrom, and it includes coupling means adjacent the inlet for engagement with a source of pressurized air to enable delivery thereof into the passageway.
- a support member for the manifold is adapted for mounting in a stationary position on the die-cutting press, and has means for securing the core portion in a substantially fixed position thereon. Rotation of the roll on the press about the core portion causes intermittent registry of the one aperture and the one port, permitting air to flow from the source thereof outwardly through the port in a radial direction.
- the material of the core portion also possesses a relatively low coefficient of friction, affording thereto inherent lubricity; for example, it may be comprised of a fluoroplastic resin.
- the core member is integrally formed of the same material as the core portion and has an enlargement adjacent the one end of the roll and outwardly thereof. The enlargement serves to restrain axial movement of the roll in one direction, and provides a thrust surface against which the one end thereof may abut.
- the port of the core portion is elongated in a generally axial direction, so that the force of air acting against the longer edges of the port tends to increase the separation therebetween. This urges the adjacent outside surface of the core portion more tightly against the corresponding area of the inside surface of the roll, which in turn enhances significantly the sealing action thereat.
- the roll will have a second cutting element on its outside surface with a second aperture extending from the cavity to a location therewithin.
- the two apertures in such a roll may open at generally circumferentially aligned points on the inside surface thereof for sequential registry with the port of the core portion during rotation of the roll thereabout.
- the roll may be provided with apertures opening at axially spaced points on the inside surface thereof.
- the outlet of the core portion will include at least a second port that opens on the outside surface thereof independently of the first port at a point spaced axially therefrom for cooperation with an axially spaced opening of the roll.
- the core portion will provide ports that open at points that are not only axially spaced from one another, but that are also circumferentially displaced about the core portion within an arc of less than about 45.
- a core may cooperate with a roll having apertures that open at points disposed at a circumferential displacement that is different from that of the pointsof opening of the ports, as a result of which the first and second apertures will register with the first and second ports of the core portion at different times during the rotation of the roll.
- a multiplicity of ports will be provided in the core portion, and such ports will open at points that are disposed along a helical path extending within the 45 arc.
- the roll employed therewith will have a multiplicity of apertures that open at axially spaced points along a path of different configuration, for sequential alignment with the ports of the core portion.
- FIG. 1 is a plan view of a rotary air eject die-cutting assembly embodying the present invention
- FIG. 2 is a longitudinal sectional view of the assembly of FIG. 1;
- FIG. 3 is an end view thereof with a portion of the bearing block broken away to show the angular adjustment mechanism
- FIG. 4 is an elevational view of the manifold employed in the assembly
- FIG. 5 is a cross-sectional view of the assembly taken along line 5 5 of FIG. 2;
- FIG. 6 is a fragmentary longitudinal sectional view of a section of the core portion adjacent a port thereof and of the corresponding section of the roll, showing the enhanced contact afforded thereat by virtue of the relative resiliency of the core portion; the scale is greatly enlarged.
- a rotary air-eject die-cutting assembly embodying the present invention and consisting of a die-cutting roll, generally designated by the numeral 10, having a bore 12 extending axially therethrough and a multiplicity of cutting elements or dies 14 of closed configuration on the outside surface thereof.
- the dies 14 are spaced about the roll 10 in aligned axial rows and circumferential columns, and designed to cut openings having the configuration shown, such as to provide a button hole in a tag for attachment to clothing.
- a multiplicity of radial apertures 16 extend from the bore 12 to the outside surface of roll 10 at locations within the confines of each of the dies 14.
- the inner ends of the apertures 16 are aligned in axial rows and circumferential columns corresponding to the dies 14, and a set of three apertures 16 is associated with each die 14 for optimum ejection effectiveness, consistent with the die configuration.
- a plug 15 is threadably engaged in one end 17 of the shaft portion of the roll 10 to provide an air sea] for the bore 12 thereat.
- the cylindrical core portion 18 of an air distribution manifold Seated within the bore 12 of the roll 10 is the cylindrical core portion 18 of an air distribution manifold, generally designated by the numeral 20 and most clearly illustrated in FIG. 4.
- the core portion 18 is fabricated of a relatively resiliently deformable synthetic resin, and has an axial passageway 22 extending therethrough and closed at its inner end by a dum bbell-shaped plug 24, which is threadably engaged therein.
- a set screw 26 is threadably engaged in a radial aperture 28 of the roll 10 and projects between the ends of the plug 24; the function of the screw 26 is to cooperate with the plug 24 to prevent inadvertent dissasembly of the manifold 20 from the roll 10 when the assembly is dismounted from the die cutting press on which it is used.
- the outer end 30 of the core portion 18 is externally threaded, and engages thereon a hose coupling nipple 32 that is of conventional design, except for the splined portion 34 that extends circumferentially thereabout.
- An annular enlargement 36 is provided on the core portion 18 and serves, in cooperation with the thrust washers 38, as an abutment element of the adjacent end 40 of the roll 10.
- Three axially extending elongated ports or slots 41 are formed through the wall of the core portion 18 of the manifold 20 to provide air flow communication with the passageway 22 therein.
- the ports 41 are spaced along a helical path on the core portion 18, and the are a of circumferential displacement thereof is less than about 45.
- the ports 41 are axially spaced so that the sets of apertures 16 associated with each circumferential column of dies 14 register intermittently with one of them, as the roll 10 rotates about the core portion 18.
- a bearing assembly consisting of an inner race 42, a multiplicity of needle bearings 44, and an outer case 46.
- the bearing assemblies are received in bearing blocks 48, 50 which are stationarily supported on frame portions 52 of the press, to journal the roll thereon.
- the bearing block 50 has formed in its upper portion an angularly disposed aperture 54 intersecting tangentially with the axial passageway 56 therethrough.
- the adjustment screw 58 has its threaded shaft 60 inserted in the aperture 54 and in meshing engagement with the splined portion 34 of the hose coupling nipple 32.
- the washers 61 permit nonlocking adjustment of the screw 58 and it will be evident that turning the screw 58 in the aperture 54 will cause the manifold 20 to pivot within the block 50, altering the radial direction in which air injected into the passageway 22 of the core portion 18 will discharge from the ports 41 thereof.
- the lock nut 63 maintained on the shaft 60 by the snap ring 65, is tightened to secure the screw 58 in the position necessary to maintain the selected angular attitude of the core portion 18.
- the illustrated adjustment mechanism may be modified or replaced by equivalent means, if so desired.
- bearers 64 are provided on the ends thereof as is now common practice.
- a driven gear 66 is fixed upon the end 40 of the shaft portion of the cutting roll 10, and it meshes with the drive gear 68 that is fixed on a common shaft with the anvil roll 62.
- the web stock passes between the nip of the rolls 10, 62 as they are driven in opposite directions (by means also not shown), with the dies 14 cutting scrap pieces from the web.
- air under pressure e.g., line pressures of about 80 psi are commonly available
- the core portion 18 maintained at a set angular attitude. Due to the close fitting relationship and the relative resiliency of the core portion 18 (as will be more fully discussed hereinafter) substantially no air flows through the manifold 20 when none of the ports 41 is aligned with an aperture 16, thus conserving air and maintaining the pressure thereof at a high value.
- each set of apertures 16 comes into registry with the port 41 that is axially aligned therewith, permitting air to flow therethrough so as to eject any scrap piece that may be lodged in the associated die 14.
- Due to the helical arrangement of the ports 41, at any given instant air flow is substantially limited to one of the dies 14, with the dies 14 that are axially aligned therewith in a single row receiving air sequentially thereafter. This flow pattern occurs in each row of dies 14 as the apertures 16 associated therewith are presented for registry with the ports 41 during rotation of the roll 10.
- the are a representing the portion of the circumference covered by the helical path on which the ports 41 are arranged, is preferably less than 45, and should be as small as possible consistent with a desirable level of independence of air flow through the dies 14. This is to minimize the space in which air and scrap pieces discharge from the assembly so as to prevent scattering, to facilitate collection of the pieces, and/or to utilize the air stream most effectively.
- the optimal direction of air flow (which will depend upon the relationship of the die-cutting and anvil rolls 10, 62, the travel of the web stock relative thereto, and upon other factors) is determined most effectively by trial and error. Accordingly the adjustability of the manifold 20 of the illustrated assembly affords considerable advantages, since changes in attitude may be readily made, even during operation.
- FIG. 6 of the illustrated embodiment is an exaggerated representation of the separation or bowing of the longer edges of the ports 41, that occurs when none of them is in registry with an aperture 16.
- the core portion 18 is desirably formed of a relatively high modulus synthetic resinous material, the elongation of the ports 41 coupled with the degree of resiliency afforded by the core portion 18 permits slight flexing and cross-sectional enlargement to occur thereat. Accordingly, when all ports 41 are out of registry, the internal air pressure acts against the edges of the ports 41 and the associated wall sections to urge them more tightly against the corresponding surface areas of the roll 10 definingthe bore 12 therein; this is depicted in FIG. 6, and results in a well sealed assembly without need for auxiliary sealing elements or the like.
- the core portion 18 of the manifold 20 is fabricated from a material that possesses a relatively low coefficient of friction, in addition to resilient deformability.
- exemplary synthetic resins include the long chain polyamides, the polyethylene terephthalate polyesters and (most desirably) the fluoroplastics such as fluorinated ethylene propylene, polytetrafluoroethylene, polychlorotrifluoroethylene, polyvinylidene fluoride and the like; both filled (or reinforced) and unfilled resins may be utilized.
- the present invention provides a novel rotary air eject die-cutting assembly in which the effectiveness of pressure applied for the ejection of scrap particles is relatively high, and in which operation is substantially improved, as compared with prior art air eject devices.
- the direction of discharge is controlled, added support and bearing members for the manifold core portion are unnecessary, and the effectiveness of air ejection is maximized and the air loss is minimized by the attainment of improved sealing action between the roll and the manifold core portion seated therein.
- the assembly is relatively simple and inexpensive to construct, is virtually trouble free in operation, exhibits an increased useful life by virtue of diminished wear of its component parts, and may be employed with existing equipment with little or no alteration thereto.
- a rotary air eject die-cutting assembly comprising: a die-cutting roll adapted for journaling in a die cutting press and having a cylindrical cavity extending axially inwardly from one end thereof and cutting elements of closed configuration on its outside surface with at least one aperture extending from said cavity to a location on said outside surface within the confines of said cutting element, said aperture enabling air flow between said cavity and said cutting element and comprising substantially the only outlet for air from said roll; an air delivery manifold having a core member with a self-supporting relatively resiliently deformable cylindrical portion inserted axially into said cavity of said roll from said one end thereof, for relative rotation therebetween, said core portion being substantially free of added support and bearing members within said roll cavity and being dimensioned and configured to seat therein with its outer surface in close proximity to the inside surface of said roll defining the corresponding portion of said cavity, said core portion having an axially extending passageway therein with an outlet comprising at least one generally radially extending port opening at a point on said outer surface
Abstract
Description
Claims (10)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13937871A | 1971-05-03 | 1971-05-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3698272A true US3698272A (en) | 1972-10-17 |
Family
ID=22486342
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US3698272D Expired - Lifetime US3698272A (en) | 1971-05-03 | 1971-05-03 | Rotary air eject die-cutting assembly |
Country Status (1)
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US (1) | US3698272A (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0059737A1 (en) * | 1980-09-15 | 1982-09-15 | Blava In-Line Inc. | Apparatus for continuously cutting and removing thin trim strips from a printed web |
US4480516A (en) * | 1980-11-19 | 1984-11-06 | Etablissements Ruby | Machine for continuously cutting a strip for forming sections with rounded edges having opposite curvatures |
US4599926A (en) * | 1984-07-16 | 1986-07-15 | Preston Engravers, Inc. | Rotary cutting dies with vacuum assist to cut and clear waste |
US4613321A (en) * | 1985-09-06 | 1986-09-23 | Preston Engravers, Inc. | Diecutting roll system with improved scrap disposal capability |
EP0586876A1 (en) * | 1992-09-05 | 1994-03-16 | Heidelberger Druckmaschinen Aktiengesellschaft | Device for a controlled separation of waste from printed material |
JP2604785Y2 (en) | 1996-02-15 | 2000-06-05 | 株式会社オーエム製作所 | Strip remover for rotary die cutter |
CN103128786A (en) * | 2011-12-05 | 2013-06-05 | 苏州源德福科技有限公司 | Blowing round roller extraction cutter |
CN103128787A (en) * | 2011-12-05 | 2013-06-05 | 苏州源德福科技有限公司 | Blowing round roller extraction cutter |
-
1971
- 1971-05-03 US US3698272D patent/US3698272A/en not_active Expired - Lifetime
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0059737A1 (en) * | 1980-09-15 | 1982-09-15 | Blava In-Line Inc. | Apparatus for continuously cutting and removing thin trim strips from a printed web |
EP0059737A4 (en) * | 1980-09-15 | 1984-07-25 | Blava In Line Inc | Apparatus for continuously cutting and removing thin trim strips from a printed web. |
US4480516A (en) * | 1980-11-19 | 1984-11-06 | Etablissements Ruby | Machine for continuously cutting a strip for forming sections with rounded edges having opposite curvatures |
US4599926A (en) * | 1984-07-16 | 1986-07-15 | Preston Engravers, Inc. | Rotary cutting dies with vacuum assist to cut and clear waste |
US4613321A (en) * | 1985-09-06 | 1986-09-23 | Preston Engravers, Inc. | Diecutting roll system with improved scrap disposal capability |
EP0586876A1 (en) * | 1992-09-05 | 1994-03-16 | Heidelberger Druckmaschinen Aktiengesellschaft | Device for a controlled separation of waste from printed material |
US5419224A (en) * | 1992-09-05 | 1995-05-30 | Heidelberger Druckmaschinen Ag | Device for the controlled removal of pieces of waste material |
CN1036903C (en) * | 1992-09-05 | 1998-01-07 | 海德堡印刷机械股份公司 | Apparatus for controlling removal of unqualified pieces of printed matters |
JP2604785Y2 (en) | 1996-02-15 | 2000-06-05 | 株式会社オーエム製作所 | Strip remover for rotary die cutter |
CN103128786A (en) * | 2011-12-05 | 2013-06-05 | 苏州源德福科技有限公司 | Blowing round roller extraction cutter |
CN103128787A (en) * | 2011-12-05 | 2013-06-05 | 苏州源德福科技有限公司 | Blowing round roller extraction cutter |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
STCF | Information on status: patent grant |
Free format text: PATENTED FILE - (OLD CASE ADDED FOR FILE TRACKING PURPOSES) |
|
AS | Assignment |
Owner name: QUINCY TECHNOLOGIES, INC.,CONNECTICUT Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:PRESTON ENGRAVERS, INC.;REEL/FRAME:004775/0530 Effective date: 19870812 Owner name: QUINCY TECHNOLOGIES, INC., 446 BLAKE STREET, NEW H Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:PRESTON ENGRAVERS, INC.;REEL/FRAME:004775/0530 Effective date: 19870812 |
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AS | Assignment |
Owner name: CONNECTICUT BANK AND TRUST COMPANY N.A., THE, CONN Free format text: SECURITY INTEREST;ASSIGNOR:QUINCY TECHNOLOGIES, INC.,;REEL/FRAME:004894/0324 Effective date: 19870812 Owner name: CONNECTICUT BANK AND TRUST COMPANY, N.A., THE, 900 Free format text: SECURITY INTEREST;ASSIGNOR:QUINCY TECHNOLOGIES, INC.,;REEL/FRAME:004894/0324 Effective date: 19870812 |