US3885413A - Method and machine for fashioning sheet materials - Google Patents

Method and machine for fashioning sheet materials Download PDF

Info

Publication number
US3885413A
US3885413A US357916A US35791673A US3885413A US 3885413 A US3885413 A US 3885413A US 357916 A US357916 A US 357916A US 35791673 A US35791673 A US 35791673A US 3885413 A US3885413 A US 3885413A
Authority
US
United States
Prior art keywords
strip
rake
teeth
members
tunnel
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
US357916A
Other languages
English (en)
Inventor
Wolf Maria Auer
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.)
Bremsen & Filter Handelsges
BREMSEN-UND-FILTER-HANDELSGESELLSCHAFT MBH
Original Assignee
Bremsen & Filter Handelsges
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 Bremsen & Filter Handelsges filed Critical Bremsen & Filter Handelsges
Application granted granted Critical
Publication of US3885413A publication Critical patent/US3885413A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H45/00—Folding thin material
    • B65H45/12—Folding articles or webs with application of pressure to define or form crease lines
    • B65H45/20—Zig-zag folders

Definitions

  • the means which support the forming heads are heavy and the inertia of the different parts prevents the mechanisms from being driven at high speeds, thereby necessarily limiting the output of each machine.
  • the invention accordingly relates to a method of obtaining pleated and/or chevronpatterned structures from strip material, comprising in combination, the phases of marking pleat and chevron crease lines on the strip, impelling the creased strip to forming means which assist formation of the pleats and chevrons, by feeding the strip at a speed higher than that at which the pleated structure is withdrawn, offering the pleats or chevrons alternately to the fashioning members of the forming means positioned on either side of the strip path, in such manner that engagement into one of said members immediately succeeds disengagement from the opposite companion member, responsive to a phase of transverse displacement of the structure obtained as the latter is being discharged.
  • accentuation of the pleating is obtained by successive progressive tightenings of the pleats.
  • accentuation of the chevron pattern is obtained by pushing against the chevron peaks and restraining the chevron troughs, the successive projections and troughs being considered in the direction of travel of the structure undergoing formation.
  • the said pushing and restraining is obtained respectively by continuously and alternately increasing and reducing the rates of displacement of said projections and troughs.
  • the present invention further relates to apparatus for performing such method, which comprises a machine having marking and driving rollers and by the provision, downstream of the rollers, of an oscillating tunnel for receiving the formed structure.
  • the tunnel has a profiled entrance and is movable pendularly between two opposite forming heads each of which has a series of rakes having the same degree of convergence as the tunnel when same has a convergent configuration.
  • These rakes are formed with teeth, the spacing between which, increases in the downstream direction, and each rake is connected with an advancing and retracting mechanism in the associated head.
  • Alternate rakes of each head have a more rapid advance than their companion rakes, the fastest rake tending to push the peak region of a chevron while the slowest has a restraining effect on the adjacent trough line.
  • the movements of the rakes in the two opposed heads are preferably coordinated by interconnecting the two series of rakes by means of a rocker which actuates eccentric shafts which are oppositely orientated for any pair of companion rakes, the eccentric shafts engaging into the ends of said rocker by means of terminal blocks on the shafts carried in terminal forks of the rocker arms.
  • Coordination of these motions may imply that the rocker be actuated when, in the course of its motion, the tunnel activates a limit stop.
  • the flanks of the tunnel are provided with racks, each separated into stationary restraining elements, and moving pusher elements possessed of motion in concert with that of the tunnel which will move the strip.
  • a single drive taken off a motor/reduction gear unit provides synchronization of the motions of the tunnel, the rocker, the rakes, the racks and the marking and propelling rollers.
  • the strip material can be'arranged in at least two thicknesses at the entrance end to the machine whereby to be formed into asymmetrical folds. These strips can have an intermediate band placed between them whereby to accentuate said asymmetry.
  • FIG. 1 shows in longitudinal section through the line II of FIG. 2 a machine for manufacturing a pleated and chevron-patterned structure from strip material;
  • FIG. 2 is a section through the line IIII of FIG. 1;
  • FIGS. 3, 4 and are sectional views through the lines III-III, IVIV and VV of FIG. 1;
  • FIG. 6 shows on an enlarged scale the arrangement, in a forming head, of the interconnection between rakes, actuating eccentrics and rocker ends.
  • a machine in the illustrated exemplary embodiment, includes a base 1 which houses bearings for which compressing, marking and propelling rollers 2 and 3 are journalled. The rollers operate on continuous strip material 4 propelled from a magazine (not shown) towards an outlet for the fashioned structures.
  • This base also supports a motor/reduction gear unit 5 which through a desmodromic drive 6 rotates a pulley 7 fixed fast with roller 3.
  • the base 1 further supports sidewalls or flanks 8 which carry a shaft 9 for a cam and eccentric and having a pulley 10 over which the drive means 6 runs.
  • An extension of the flanks 8 opposite the motor unit supports trunnions 11 about which is oscillatably mounted a tunnel 12.
  • the flanks 8 further support trunnions 13 for a rocker frame 14 which is attached to a spring 15 adjustably secured to a cross-member 15a forming a spacer between the extensions of said flanks.
  • Shaft 9 is fixed fast with an eccentric block 16 the linkshaped cage 17 of which is attached to a pin 18 fast with a cross-member 19 of the tunnel 12. Shaft 9 is also fast with a cam 20 which cooperates with a follower 21 supported on a crosspiece for actuating the rocker 14 of which a cross-member 22 is part.
  • flanks 8 support two opposed forming heads 23 and 24 fast therewith.
  • a plurality of facing rakes 25 and 26 each having a row of teeth of substantially constant height, with the exception of the first entry tooth which is lower and more rounded than the others, the pitch of the teeth in said rows decreasing in the downstream direction.
  • the sets of rakes 25 and 26 are movable and are mutually converging to a slight degree.
  • rakes are slidably mounted in their respective slots in heads 23 and 24 by attachment means provided in each head by a forward transverse rod 27 (or 28) extending through a longitudinal mortise in each rake and by virtue of the latter being mounted, opposite said rods, on eccentric blocks 29 and 30 forming part of pins 31 and 32 the ends of which are rotatable in lateral bearings 33 engaging into an indent 34 in each head, the ends of said pins being formed with flat portions 35 slidably mounted in forks 36 and mortises 37 of the rocker arms.
  • tunnel assembly 12 On the same side as rollers 2 and 3, the tunnel assembly 12 is formed at its end with a profiled mouth 38. In the region of heads 23 and 24, tunnel 12 includes flanks 39 which converge in the downstream direction. Formed in the upper and lower faces are slots 40 for passage of each of the rakes 25 and 26, said flanks and said slots having the same degree of convergence.
  • the lateral faces of the tunnel are provided with racks each of which consists of two fixed elements 41 and 42 on either side of a movable slide 43.
  • Slide 43 is restrained at the outer end of the tunnel, adjacent the trunnions 11, by a peg 44 which is inserted into a perforation in tunnel member 12 and the tip of which inserted into a mortise formed in said slide, in the face thereof behind the toothed face.
  • each slide is fast with a peg 45 inserted into a mortise 46 in the tunnel flank, which peg terminates in a nipple 47 cooperating with a symmetrical arcuate mortise 48 formed in a fitted plate 49 which is provided on each side and secured to the corresponding flank 8.
  • the eccentric blocks 29 are alternately set out of phase by half a turn, such that when shaft 31 advances responsively to rocker 14 there occurs a rotation of the block 29 as a result of engagement of the flats 35 with the forks 36 and a complementary advance of the lateral and central rakes 25, whereas the possible advance authorized for the two intermediate rakes, the eccentric blocks of which are set out of phase by is reduced.
  • the central rake and the lateral rakes (in the case of a structure with a two-chevrons pattern, say) provide a dorsal entrainment of the chevron peaks whereas the intermediate rakes provide a restraining effect on the two chevron troughs.
  • the rakes are caused to act differently in respect of chevron peaks and chevron troughs.
  • a machine as hereinbefore described operates in the following manner:
  • rollers 2 and 3 In response to the drive exerted, rollers 2 and 3 cause the strip 4 to advance simultaneously impressing thereon, for example, a pattern of mutually adjoining parallelograms.
  • the relief pattern is reversed from one imprint line to the next or to the adjoining imprint line, that is to say that it appears alternately on the two sides of strip 4.
  • tunnel 12 rises once more and thereby tends to disengage the pleat from this tooth gap, which pleat is meanwhile being tightened to a degree dependent on the rate of continuous advance of strip 4.
  • this pleat escapes from lower rakes 26, and the previous pleat of opposite sense engages into the next tooth gap (i.e., the second gap from the upstream end) in the upper rakes 25.
  • the above-indicated motions of the pleats are assisted by the retracted position then occupied by the rakes 25.
  • each upper rake 25 and facing lower rake there corresponds either a chevron peak or a trough between two adjacent chevrons.
  • the two outer rakes and the central rake correspond to chevron peaks whereas the two intermediate rakes correspond to chevron troughs.
  • eccentric blocks 29 are mutually outphased by 180 from one to the next, it will readily be appreciated that the motion of rocker 14 is accompanied by rotation of the eccentric blocks responsively to the co-acting of forks 36 with flats 35 and of the corresponding mortises 37 with the companion flats on shaft 32.
  • the external blocks and the central block thus cause their associated rakes to be advanced lengthwise within the heads to a greater extent downstream than the intermediate rakes.
  • the latter restrain the chevron troughs with the back of their teeth whereas the external rakes and the central rake push the chevron peaks further forward with the front of their teeth.
  • the output rates can be such that instead of using an ordinary cam with a lobe 20, in association with the spring 15, it may prove necessary to employ a grooved cam or any other convenient desmodromic control means in order to avoid any tendency for follower 21 to float.
  • a method for pleating or forming chevron patterns on strip sheet material comprising the steps of continually pushing an elongated strip between a pair of op posed forming heads, each having a rake shaping member, cyclically moving said rake shaping members on opposite sides of said strip to engage said strip and form transverse pleats, the rakes of said shaping members having a plurality teeth to engage said strip arranged in alternate opposition to each other and progressively decreasing in pitch in the direction of movement of said strip, withdrawing the lead endof said strip from said rake shaping members and simultaneously moving said strip cyclically toward and away from each of said rake shaping members causing the engagement of said strip into the teeth of one of the opposed shaping members immediately succeeding disengagement from the immediately preceding teeth of the other rake shaping member so as to progressively form said strip into tighter pleats.
  • Apparatus for forming pleated and chevron patterns in fiat strip material comprising a pair of oppositely arranged forming heads, each having a rake shaping member comprising a plurality of longitudinally spaced groups of teeth, said groups being disposed in a series of teeth disposed longitudinally and converging in the longitudinal direction, the distance between successively adjacent teeth in each group decreasing in the longitudinal direction, means for continually feeding strip material between said forming heads, means for cyclically moving said strip material toward each rake member alternately to cause said teeth to bend said moving strip material, means for simultaneously withdrawing the leading end of said moving strip of material from between said rake members after the formation of each bend, said withdrawing means being swingable synchronously within the space between said rake members to engage and disengage said sheet material successively alternately in and from the teeth of said opposing rake members, said rake members being arranged so that the bends in said sheet material alternately engage within the successive teeth of the opposite rake member immediately on disengagement from the opposite one, to thereby
  • said means for withdrawing said strip comprises an elongated tunnel having one end adjacent said forming heads and another end remote therefrom from discharging said bent strip, said one end having an intake portion for holding said strip and being profiled to retard the forward movement of said strip, and means for pendulously oscillating at least said intake end from one of said rake members to the other to alternately lodge and dislodge said strip in and from said rake members.
  • said means for feeding said strip material comprises a pair of rollers located upstream of said rake members, said rollers having means for impressing score lines on said strip corresponding to the folds of said pleats.
  • the means for moving said rake members and for pivoting said tunnel comprises an eccentric and cam mechanism rotatable about common axis, and includes an articulated connection between said eccentric and said tunnel, a cam follower, a rocker arm connected at one end to said cam follower and at the other end articulatingly connected to each of said series of teeth, said series of teeth being mounted on an eccentric shaft and slide bearings.
  • the apparatus according to claim 12 including a common drive means for rotating said strip material, feed rollers and the eccentric and cam mechanism for pivoting said tunnel.

Landscapes

  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Treatment Of Fiber Materials (AREA)
US357916A 1972-05-19 1973-05-07 Method and machine for fashioning sheet materials Expired - Lifetime US3885413A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7218019A FR2185175A5 (ja) 1972-05-19 1972-05-19

Publications (1)

Publication Number Publication Date
US3885413A true US3885413A (en) 1975-05-27

Family

ID=9098829

Family Applications (1)

Application Number Title Priority Date Filing Date
US357916A Expired - Lifetime US3885413A (en) 1972-05-19 1973-05-07 Method and machine for fashioning sheet materials

Country Status (7)

Country Link
US (1) US3885413A (ja)
JP (1) JPS5227864B2 (ja)
AR (1) AR194549A1 (ja)
BR (1) BR7303610D0 (ja)
ES (1) ES414932A1 (ja)
FR (1) FR2185175A5 (ja)
IT (1) IT987276B (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5261262A (en) * 1992-03-02 1993-11-16 Wallis Bernard J Method and apparatus for cutting corrugated webs having louvers
IT201800002342A1 (it) * 2018-02-02 2019-08-02 Perini Fabio Spa Macchina interfogliatrice con diti separatori adiacenti a rispettivi rulli interfogliatori

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6078319U (ja) * 1983-11-01 1985-05-31 株式会社　サタケ 揚穀機の清掃装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1098144A (en) * 1908-01-30 1914-05-26 Gen Electric Means for corrugating sheet metal.
US1546195A (en) * 1922-04-04 1925-07-14 Joseph H Briskin Forming machine
US1849944A (en) * 1929-12-16 1932-03-15 Auto Radiator Mfg Company Apparatus for forming radiator cores
US3641803A (en) * 1969-04-24 1972-02-15 Coq Nv Methods for the manufacture of a contact strip folded in zigzag for a fixed switching contact and folding machines for performing said methods

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1098144A (en) * 1908-01-30 1914-05-26 Gen Electric Means for corrugating sheet metal.
US1546195A (en) * 1922-04-04 1925-07-14 Joseph H Briskin Forming machine
US1849944A (en) * 1929-12-16 1932-03-15 Auto Radiator Mfg Company Apparatus for forming radiator cores
US3641803A (en) * 1969-04-24 1972-02-15 Coq Nv Methods for the manufacture of a contact strip folded in zigzag for a fixed switching contact and folding machines for performing said methods

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5261262A (en) * 1992-03-02 1993-11-16 Wallis Bernard J Method and apparatus for cutting corrugated webs having louvers
IT201800002342A1 (it) * 2018-02-02 2019-08-02 Perini Fabio Spa Macchina interfogliatrice con diti separatori adiacenti a rispettivi rulli interfogliatori
WO2019149905A1 (en) * 2018-02-02 2019-08-08 Fabio Perini S.P.A. An interfolding machine with separation fingers adjacent to respective interfolding rollers

Also Published As

Publication number Publication date
JPS5227864B2 (ja) 1977-07-22
IT987276B (it) 1975-02-20
BR7303610D0 (pt) 1974-07-25
JPS4941447A (ja) 1974-04-18
FR2185175A5 (ja) 1973-12-28
DE2322672A1 (de) 1973-11-22
ES414932A1 (es) 1976-02-01
DE2322672B2 (de) 1976-04-15
AR194549A1 (es) 1973-07-23

Similar Documents

Publication Publication Date Title
US2901951A (en) Process and machine for pleating pliable materials
US3885413A (en) Method and machine for fashioning sheet materials
US5277532A (en) Mechanical acceleration device in can welding machines
JP2001508703A (ja) シート材料を波形状にするためのフィン折曲げ機
CH631667A5 (it) Dispositivo per la formazione ed il trasferimento di gruppi di prodotti in macchine incartatrici automatiche ad altissima velocita.
US739276A (en) Machine for corrugating paper.
US2778385A (en) Apparatus and method for forming sinuous wire structural and heat exchange elements
US4741192A (en) Rolling metal ribbon stock into convoluted fin strip for use in heat exchangers
SU635857A3 (ru) Машина дл гибки заготовок типа прутков
US4212550A (en) Ribbon storage mechanism having eccentrically mounted feeding elements
US2483865A (en) Sinusoidal spring forming machine
US5836194A (en) Portable tube-bending machine
US2208900A (en) Drier for dough strings fed thereto and cut into portions looped on bars
US2261552A (en) Apparatus for making slide fasteners
US1961366A (en) Stacking apparatus
JPH0318970B2 (ja)
US1188070A (en) Textile-machine.
US3116120A (en) Metallic mesh material
US3667268A (en) Method of and apparatus for corrugating pliable material
US1639397A (en) Wire-bending machine
US3144814A (en) Means for scoring sheet workpieces
SU751466A1 (ru) Станок дл изготовлени зигзагообразных изделий
SU537620A3 (ru) Устройство дл завертывани штучных изделий
US2569976A (en) Means for automatically and intermittently feeding blanks of cardboard or similar sheet material
US3634922A (en) Apparatus and method for forming coil for plastic slide fastener