EP1220737B1 - Hefter mit vorrichtung zum formen von unterschiedlich grossen klammern - Google Patents

Hefter mit vorrichtung zum formen von unterschiedlich grossen klammern Download PDF

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Publication number
EP1220737B1
EP1220737B1 EP00942761A EP00942761A EP1220737B1 EP 1220737 B1 EP1220737 B1 EP 1220737B1 EP 00942761 A EP00942761 A EP 00942761A EP 00942761 A EP00942761 A EP 00942761A EP 1220737 B1 EP1220737 B1 EP 1220737B1
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EP
European Patent Office
Prior art keywords
former
staple
driver
clinching
bend
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
EP00942761A
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English (en)
French (fr)
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EP1220737A4 (de
EP1220737A1 (de
Inventor
David P. Adams
Valentine Fridmanovich
Kenneth John Bargo
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Acco Brands Inc
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Acco Brands Inc
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Publication of EP1220737A4 publication Critical patent/EP1220737A4/de
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27F—DOVETAILED WORK; TENONS; SLOTTING MACHINES FOR WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES
    • B27F7/00—Nailing or stapling; Nailed or stapled work
    • B27F7/17—Stapling machines
    • B27F7/38—Staple feeding devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27F—DOVETAILED WORK; TENONS; SLOTTING MACHINES FOR WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES
    • B27F7/00—Nailing or stapling; Nailed or stapled work
    • B27F7/17—Stapling machines
    • B27F7/19—Stapling machines with provision for bending the ends of the staples on to the work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27F—DOVETAILED WORK; TENONS; SLOTTING MACHINES FOR WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES
    • B27F7/00—Nailing or stapling; Nailed or stapled work
    • B27F7/17—Stapling machines
    • B27F7/30—Driving means
    • B27F7/36—Driving means operated by electric power

Definitions

  • Standard size staples have been used to staple stacks of paper, or other material, within predetermined ranges of stack thicknesses. In general, staples with longer legs are needed to staple thicker stacks than can be stapled with staples that have shorter legs. Standard staple sizes, for example, are configured for stapling ranges of stacks from 2 to 30 sheets or 30 to 70 sheets, for instance.
  • U.S. Patent 4,318,555 teaches a stapler that cuts and forms staples from a continuous supply of wire.
  • the height of the stack to bc stapled is sensed, and the length of the wire to be cut is selected accordingly.
  • the cut blank is then formed into a staple, which is then driven into the sheets to be stapled.
  • the staple is formed with legs of varying length, and a crown of a constant length.
  • U.S. Patent Nos. 4,583.276 and 5,007,483 show staplers that employ the cartridge that includes a belt of straight, flat staple blank.
  • the belt is fed to a former which bends the blanks to a single size.
  • a driver then drives the formed staple towards an anvil with clinching grooves or clinching wings to bend the staple legs against the stack.
  • U.S. Patent 2,635,234 which is considered the closest prior art, discloses improvements in staple forming and driving machines wherein the stapling wire is fed from a source of supply, is cut into successive lengths, the cut length is formed into a staple over a supporting anvil device, the anvil device is withdrawn and the formed staple is driven while being supported by a movable shoe which is retracted as the driving proceeds.
  • U.S. Patent 3,642,187 discloses a wire stitching head for successively producing a series of uniformly shaped and sized stitches from a continuous' length of wire and including a reciprocating stitch-forming bar a relatively shiftable stick-driving bar operable by a single rotating cam wheel fitted with a cam edge which coacts with a guide roller to feed a predetermined length of wire into stitch-forming position upon each rotation of the cam wheel.
  • the cam wheel is further provided with a second cam surface which cooperates with a following rod to properly position a pivoting anvil into stitch-forming position during the stitch-forming operation.
  • the guide roller is adjustable and is provided with a compressible inner core whereby the stitching head can accommodate differently-dimensioned wire stock without the necessity of changing either the can disc or the guide roller.
  • a dual directional clutch is utilized to selectively interconnect the output shaft of an electric motor with the driven shaft which carries the aforementioned ca wheel at one free end thereof, the opposite end of the driven shaft carrying means for actuating electrical switch contacts utilized to synchronize the operation of the stitching head in an overall stitching machine.
  • a drag brake assembly which cooperates directly with the aforementioned cam wheel is employed to prevent override of the cam wheel when the clutch disengages to thereby directly prevent the cam wheel from unintentionally beginning another stitch-forming operation.
  • U.S. Patent 644,754 discloses a stapling machine whereby parts of books, pamphlets, etc., are stitched or fastened together by wire staples.
  • the document discloses a combination with the staple former and driver, of a rock-lever pivoted between its upper and lower arms, and anvil arranged on the lower arm of the rock-lever and adapted to support a staple-blank and a cam arranged on the staple-driver and adapted to engage with the upper arm of the rock-lever during the upward movement of the driver and with the lower arm of the rock-lever during the downward movement of the driver, whereby the rock-lever is turned so as to move the anvil toward and from the driver.
  • U.S. Patent 3,504,837 discloses a stapling machine for forming and driving staples formed from a band of cut wires or staples in which the forming block has retractable portions which are gradually retracted by the cut wires or staples as they are being formed by means contacting said cut wires outwardly from the bend between the leg and crown portion of the staple being formed.
  • U.S. Patent 5,076,483 discloses a powered stapler mechanism with a pivotal head mounted in a housing comprising of an upper portion and a lower portion including a lower floor and upstand structure to which the mechanism is anchored.
  • the pivotal head is raised by cam means during the stapler cycle and the housing portions are lockable together using an axle and a slide lock.
  • U.S. Patent 1,810,528 discloses a stapling machine, a base, a housing pivoted to the base, a reciprocal plunger carried by the housing, an anvil carried by the base and slidable to force the free end of a staple toward the under side of the articles to be stapled, means below the base on which the base rests and movable toward the base, means carried by the latter means to slide said anvil laterally on depression of the plunger and spring means to normally hold the base above the carrier for the anvil operating means.
  • U.S. Patent 1,996,222 discloses a stapling machine including a base and staple driving means moveable toward and from the base, a pair of anvil members, means mounting said anvil members on the base for movement between operative and inoperative positions, locking means normally holding said anvil members in inoperative position, said locking means positioned to be released by the pressure of the prongs of a staple being driven, and means outwardly of said locking means and forming a support for articles to be stapled, whereby the prongs of a staple release said locking means after passing through the articles being stapled.
  • EP 0 051 395 discloses a clinching mechanism for bending the legs of a staple and stapler apparatus incorporating such a mechanism.
  • the clinching mechanism includes two pivotal ears each of which is formed with a cutting edge which cooperates with a fixed cutting edge arranged to cut the excess portions of staple legs.
  • the length of the portions cut off is in accordance with the thickness of the set being stapled, the thinner the set, the longer the portions.
  • U.S. Patent 3,347,439 discloses a fastener driving tool having an interchangeable fastener magazine and driver blade for the accommodation of a diversity of fasteners.
  • U.S. Patent 5,639,007 discloses a stapler including a staple magazine rotably connected to an operating assembly.
  • the operating assembly rotates around a shaft in response to pressure applied by a user to an operating handle.
  • the staple magazine includes a plurality of staple clips capable of holding different size staples.
  • the stapler includes means for determining a desired staple size.
  • the staple magazine is rotated by the user to select a desired size staple.
  • a stopper assembly slidably mounted on a base of the stapler, is positioned by the user to limit and guide a front edge of a stack of papers being stapled.
  • the means for determining a desired staple size and the stopper assembly are free from interference with each other.
  • the stopper assembly is constructed so that a portion contacting the front edge of the stack of papers remains perpendicular to the front edge during a stapling operation.
  • the invention is related to a stapler that can feed a staple blank of a predetermined length and form the blank into a staple selectably with a smaller or larger crown size, and preferably with corresponding larger or smaller leg length.
  • a single source of staple blanks can he used to staple a large range of stack sizes, by varying the configuration of the staple produced.
  • a preferred embodiment of a stapler 10 constructed according to the invention has a base frame 12 which can be secured to a housing or secured within another apparatus such as a photocopy machine.
  • the frame 12 has side pieces 14, which may be constructed as disclosed in U.S. Patent No. 5,076,483 .
  • Axle 16 is received in holes in the side pieces, and is preferably held by round clinch washers located in mount recesses of the axle 16.
  • Frame 12 also carries pivotable clinch member actuator 18.
  • Clinch actuator 18 includes a kicker plate 20 and up-standing side pieces 22 with a cam lobe 24 to engage exterior cam pins 26 carried on cam 28 to cause, as explained below, partial rotation upwards and downwards of the actuator unit 18 for actuating clinching members.
  • Drive control unit 30, also pivotably mounted about axle 16, includes two side frame pieces 32 and a top piece 34.
  • the preferred stapler 10 also has a staple head, also pivotably mounted about axle 16, which houses a driving and forming mechanism.
  • head 36 has two spaced apart sides 38.
  • Drive control unit 30 is driven tip and down preferably by a dumbbell-arm eccentric 40, which in turn is rotated by bull gear 42.
  • a top piece 34 supports motor 44, spur gear 46 and bull gear 42.
  • Dumbbell unit 40 rotates about shaft 48 with disks 50, preferably formed as one integral piece with cross tube 52.
  • disks 50 is preferably interlocked through lock piece 54 to bull gear 42.
  • Cam 28 and the other disk 50 rotate together about the axle 48.
  • Arms 54 have eyelet openings 56 surrounding disks 50.
  • An alternative actuating mechanism, in which arms of the stapling mechanism arc driven by a pin engaged in follower slots is shown in U.S. Patent 5,413,266 .
  • Other actuating mechanisms include independent motors or other mechanisms as would he understood by those of ordinary skill in the art.
  • cartridge 56 is loaded into the stapler.
  • the cartridge preferably has a band of staple blanks 58 in a roll.
  • Other embodiments may employ short stacked strips of staple blanks, as known in the art, or other feed mechanisms to deliver staple blanks to the former/driver mechanism.
  • loader 44 rotates spur gear 46 when a trip switch 60 is pressed by a stack of papers or other material to be stapled, and spur gear 46 rotates bull gear 42, causing dumbbell unit 40 to turn about shaft 48.
  • unit 40 As unit 40 rotates, it causes eccentric plastic disks 50 to turn, causing drive control unit 40 to swing downwardly about axle 16.
  • the head 46 is also pivoted downwardly towards the stack 62, and top piece 34 presses against driver actuator 64.
  • the stapler has a former assembly 65 and driver assembly 66, which together comprise a former/driver assembly or mechanism.
  • the former assembly preferably includes at least a small former portion 68 and a large former portion 70.
  • the large former portion 70 has two side portions 72 and a base 74 connecting the side portions 72.
  • the small former portion is disposed against the base 74 and between the side portions 72.
  • a coupling plate 76 disposed above and against the side portions and the small former portion 68, and bolted to side portions 72 through threaded holes 78.
  • the coupling plate 76 and the base 74 of the large former portions 70 couple the large and small former portions 68, 70 to move together substantially in the vertical direction.
  • the small former portion 58 is slidably associated with the large former portion 70 for sliding in a fore and aft direction. References in this application to vertical, horizontal fore and rearward directions or the like are made for convenience, although different embodiments may be located in different positions.
  • the small former 68 has an oblong bore 80 extending vertically therethrough and leading to a circular bore 82 in the base 74 of the large former portion 70.
  • the oblong bore 80 receives a configuration selector shaft 84 extending therethrough, and extending through bore 82 and a bore in the coupling plate 76 aligned therewith.
  • a flattened surface 86 At the upper end of the control shaft is a flattened surface 86 which is engaged within a gear 88, which in turn is driven by belt 90, wherein belt 90 is driven by a stepper motor.
  • the small former portion 68 includes two small side portions 92 separated by space 94 at a recess 96. Below the side portions 92 is a blank limit notch 98 which prevents the band of staple blanks 58 from moving past a forming and driving position when they engage against the formers. Similarly, the large former portion 70 has blank limiting notches 100 disclosed beneath the side portions 72, also for positioning the front staple blank 58 at the proper position for forming and driving. Guide shafts on 102 extend through bores 104 and the large former portion 70 and through bores aligned therewith in the coupling plate 76. These shafts 102 are secured at both their top and bottom for guiding vertical motion of the former assembly. The side portions 72 of the large former portion 70 are separated by a space 106, which is substantially equal to the width of the small former portion 68.
  • the former, driver assembly is shown in a configuration for forming and driving staples of a large crown size and a short leg.
  • eccentric portion 108 of shaft 84 locates the small former portion 68 rearwardly, to expose space 106 between the large side portions 72.
  • a bend plate assembly 110 is preferably constructed as a unitary piece, but may include separate moving portions.
  • the bend plate 110 preferably includes a small bend portion 114 and a large bend portion 116, which are longitudinally adjacent each other.
  • the leading edges of the bend plate 110 is resiliently biased against the small forward portion 68.
  • the width 19 of the large plate 116 is smaller than the space 106 by an amount sufficient to provide staple leg clearance spaces 120 between the lateral edges of the large bend portion 116 and the large side portions 72. In this configuration, the leading staple blank 58 is stopped for forward motion at the blank limiting notches 100 of the large side portions 72.
  • a forward feed spring and mechanism 122 and an anti-retract member 124 are preferably provided and function in a manner as will be understood by those of ordinary skill in the art.
  • a suitable mechanism is disclosed in U.S. Patent No. 4,583,276 .
  • Other advancing mechanisms are also suitable, such as a drive motor directly driving the band or driving other members associated by the band.
  • a driver assembly 126 preferably includes small driver blade 128, a large driver blade 130.
  • the small drive blade 130 is received in the recess 96 of the small former portion 68 and has substantially the same width as space 94.
  • the large driver blade 130 is preferably in contact with the small driver blade 128 and is disposed against the front surfaces, which face the bend plate assembly 110, of the small forming portion 68. Both drivers preferably thus move longitudinally together with the small forming portion 68.
  • Each driver blade 128 and 130 has a driving surface 132 and 134.
  • the driving surface 134 of the large driver blade 130 is the operative driving surface, as it is aligned above the leading staple blank, which is disposed over the operative top bend surface of the bend plate 110, which is the top surface of the large bend portion 116.
  • the operative former side portions are the side portions 72 of the large former portion 70, as these are also aligned above the leading staple blank 58.
  • the operative side portions are disposed laterally adjacent and on opposite sides of the operative top bend surface.
  • the small side portions 92 and the small bend portion 114 are disposed out of the plane extending through the operative surfaces and the leading staple blank 58.
  • the blank limiting notches 98 and 100 preferably extend further in vertical direction than the diameter of the staple blank 58, more preferably between half and whole diameter beyond the blank 58 in a vertical direction.
  • staple blank cross-sections are oval, with a major access measuring 0.559 millimeters (.022 inches) in a minor access measuring 0.457 millimeters (.018 inches).
  • the most preferred additional vertical space of the blank limiting portions is between 0.254 and 0.381 millimeters (.01 and .015 inches).
  • Large bend portions 116 is shown engaged with a crown portion 136 of the blank 58, and the operative side portions are shown engaged with yet unbent leg portions 138 of the blank 58.
  • the operative side portions bend the legs down around the sides of the operative large end portion 116.
  • the small bend plate being out of plane with the staple blank 58, preferably does not bend the blank 58.
  • the front crown width is less than or equal to the space 106 and more than or equal to the width 118.
  • the formed legs of the staple 58 are disposed in clearances or spaces 120.
  • the large former portion 70 also includes ramps 139 of cam portions 141, which are aligned for movement along a path to cam the cam portions 143 of the bend plate 110.
  • the cam portions 141 of the former assembly displace the bend plate 110 out of the driving path of the driver assembly so that the formed staple can be driven into the stack 68.
  • the cam portions may alternatively be located on another element that moves with the former/driver assembly, or the bend plate may simply be moved independently, such as by another motor or solenoid or other means.
  • the small driver blade includes legs 140 drivingly engaged against the top of the coupling plate 76.
  • the driver actuator 64 as seen in Fig. 8 , has a flat plunger portion 42, which is preferably fixed to the top of the small driver blade. In a large crown configuration, the plunger 142 is also aligned with the large driver blade 130.
  • the plunger 142 bias both drive blades 128 and 130 downwardly.
  • Legs 140 bias the former assembly downwardly, causing the former assembly to bend the staple legs 58 as described.
  • the legs 140 of the small blade 128 are cammed back, in a direction towards the blank cartridge 56 by ramps 142, which are preferably secured to the housing, preferably beyond the former assembly, to release the former assembly and allow the driver assembly to continue moving downward separate from the former assembly, as shown in Fig. 15 .
  • the formed staple 58 is separated from the end of staples and driven through the stack 62.
  • button 44 which is fixed to the driver assembly, preferably to the coupling plate 76 and is received in slot 146 of the small blade 128, contacts the edge of the slot 146 and lifts the former assembly back up to the starting position.
  • a second stapling configuration corresponding to a smaller crown size and longer staple legs, is selectable by operating the stepper motor to rotate the control shaft 84 preferably by about 180 degrees.
  • eccentric portion 108 displaces the small former portion 68 towards the bend plate 110, displacing the bend plate.
  • the front edges of both former portions 68 and 70, are preferably now flush.
  • the blank limiting notches 98 and 100 are now aligned such that the leading staple blank 58 is disposed within the notch and against both large and small former portions 68 and 70.
  • the operative top surface of the bend plate 110 is the small bend portion 14, and the operative side portions are the small side portions 92.
  • the small side portions 92 engage and bend the leg portions 138 of the staple blank 58 between the bend plate 110 and the side portions 92.
  • the crown width is smaller when the staple is in this configuration, and the leg length is larger. This configuration is better suited for stapling stacks 68 of a larger height than the stacks for which the stapler is best suited in the large crown-configuration.
  • the large driver blade 130 which is now disposed over the second foremost staple blank 58, is no longer aligned with the plunger 142.
  • the plunger 142 biases the small driving blade 128 towards the staple blanks 58, the plunger 142 bypasses the large driver blade 130, which preferably remains inoperative during the forming and driving strokes of the stapler.
  • a spring 146 which may be employed to raise the forming assembly back to the starting position against the stop 148 after the forming stroke is complete.
  • the stapler 10 includes a thickness sensor, as known in art, positioned near the stapling zone 150 to determine the height of the stack. If the height of the stack is sense to be below a predetermined amount, such as below 50 pages, then electronic or electric circuitry preferably operates stepping motor in order to rotate the control shaft 84 to configure the stapler 10 in the large crown configuration.
  • a thickness sensor as known in art
  • electronic or electric circuitry preferably operates stepping motor in order to rotate the control shaft 84 to configure the stapler 10 in the large crown configuration.
  • U.S. Patent No. 4,134,672 shows an example of a stack height in electronic control unit.
  • the shaft 84 may be manually or pre chonically rotatable with or without electronics and positionable to select a stack height, and other mechanisms for reconfiguring the stapler may also be employed.
  • the formers and drivers may together or independently be moved by solenoids or separate motors, or any other actuating mechanism to suitably configure the stapler, including manual adjustments that can be made by an operator.
  • more than two former portions may be employed to form staples to more than two preselected configurations.
  • the plunger 142 may be associated with another cam on the control shaft 84 to amplify the longitudinal movement thereof.
  • FIG. 20 An alternative embodiment of the former/driver mechanism is shown in Fig. 20 . This embodiment is also configured for forming staples into one of two crown sizes.
  • the stapler includes central and side blades 152 and 154 and outside blades 156.
  • the bend plate assembly includes a small width, preferably fixed portion 158, and a large width portion 160.
  • the large portion 160 is slidable longitudinally with respect to the small portion 158, but the small and large portions 158 and 160 may be fixed together similar to the bend plate 110 in the first preferred embodiment described.
  • the former assembly includes plates 156 and 154, which move together onwardly with respect to the operative portion of the bend plate, small portion 158, on which lies the staple blank (not shown).
  • blade 152 which functions as a driver, descends upon the formed staple, as the bend plate is moved longitudinally out of the path of the drive 152, to drive the staple through a stack.
  • the driver assembly comprises blade 152.
  • the preferred starting positions of the blades in the large crown configuration are shown in dashed lines in Fig. 20 .
  • the large down bend 160 is positioned beneath the blades in this configuration, and the driver assembly comprises blades 152 and 154 which start elevated with the respect to the outer blades 156.
  • the former assembly in this configuration now comprises only blades 156, which descend laterally adjacent the large bend portion 160 to bend the legs at a different location along bend plate, forming a finished staple with a larger crown size.
  • the individual blades may be moved separately such as by solenoids, a linkage mechanism, motors with meet screws, or by any other suitable mechanism, and the same is the case for the end plate assembly.
  • the blades shown can be made with other shapes and other shapes that are not necessarily flat, and can include additional blades on pairs of blades for forming staples with additional crown sizes.
  • the preferred clinching mechanism includes clinching members 162 with clinching surfaces 164.
  • the clinching surfaces 164 are preferably disposed at an angle to the vertical, and face the stapling zone.
  • the clinching members 162 are preferably movable along a clinching path that intersects the position in which the staple legs 138 dual penetrate pass the stack to be stapled, regardless of the crown size.
  • the clinching surfaces 164 are spaced laterally at least by the maximum crown width of a staple for which the stapler is configured employ.
  • the clinching members 162 are preferably mounted in housings 166, which include a passage configured to direct the clinching member 162 along with the clinching path. Most preferably each clinching member 162 includes a guided a portion 168 which is guided by and received within the housing 166.
  • the preferred clinching path is linear, as shown in Fig. 21 , but other path may also be employed.
  • the clinching path has selected such that regardless of the position or separation of the staple legs, the clinching surfaces 164, contact the leg initially substantially at a same contact angle, or an angle within a preferred range, regardless of whether the staple is of any crown size usable by the stapler.
  • the clinching members 162 are activated when cam pins 26 cammingly engage and displace cam lobes rotate 24 to otherwise move the pickup plate downwardly.
  • plate 20 engages more table linkages 170, which are preferably pitiably associated with frame 12.
  • Linkages is 170, rotated against the clinching members 162 to displace the clinching member 162.
  • Other means of actuating the clinching members, such as solenoids, or any of the parts of the stapler may also be actuated by a controlling electronic or electric circuitry.
  • the clinching member 162 may be linked to the linkage 170, and linkage 70 may be linked to the plate, such that when the kicker plate 20 is moved back upwards direction, it pulls the linkage 170, and turn pull the clinching members 162 back to their starting point in order to receive the legs of the next staple to be stapled.
  • the clinching members 162 are thus pivotable in a clinching direction along the clinching path towards the staple legs or bending the legs generally or orthogonally to the clinching direction.
  • the clinching members 162 comprise clinching rings 172 which are actuatable by the kicker plate 20.
  • the clinching wings 172 arc preferably mounted on pivots 174 which are slidably received in slots 176 of a portion of the staplers, such as the frame 12.
  • the clinching wings 172 are positioned with pivots 174 and corresponding pivots points extending axially there through spaced by a wide distance 178.
  • the legs of a staple having a large crown 136 can be contacted at the selected and most effective angle of initial contact with the clinching wings as they pivot against the legs 138.
  • the pivots 174 have been displaced towards each other such that they are separated by a distance 180, which is smaller than distance 178, to initially contact the longer and closer legs 138 of a staple with a smaller crown size, at substantially the same angle as in Fig. 22 , but within an acceptable angular range therefrom.
  • pivot control member 182 is preferably provided, and is movable in a vertical direction in order to position the pivots 174 laterally within the slats 176.
  • the clinching path is generally arcuate with respect to the stapling zone and is expected staple legs 138, and the path is thus shiftable by shifting the pivot points.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Portable Nailing Machines And Staplers (AREA)

Claims (24)

  1. . Heftklammer-Formungsmechanismus, der wenigstens eine erste und eine zweite Konfiguration hat, wobei der Formungsmechanismus Folgendes umfasst:
    eine Formbaugruppe (65, 154, 156), die wenigstens zwei wirksame Seitenabschnitte hat, die mit Schenkelabschnitten einer Heftklammer in Eingriff gebracht werden können, wobei die Formbaugruppe Folgendes hat:
    (i) einen ersten Formabschnitt (68, 154), der in der ersten Konfiguration eine erste Breite hat,
    (ii) einen zweiten Formabschnitt (70, 156), der in der zweiten Konfiguration eine zweite Breite hat, die größer ist als die erste Breite,
    wobei der erste und der zweite Formabschnitt (68, 70, 154, 156) aneinander gekoppelt sind und so zusammenwirken, dass die wirksamen Seitenabschnitte die Schenkel (138) einer Heftklammer (58) biegen, um eine erste oder eine zweite Scheitelbreite (136) der Heftklammer zu erzeugen, die der ersten oder der zweiten Breite entsprechen, wenn er sich in der ersten bzw. der zweiten Konfiguration befindet.
  2. . Formungsmechanismus nach Anspruch 1, wobei:
    (a) der erste Formabschnitt (68, 154) wenigstens einen ersten Seitenabschnitt einschließt und
    (b) der zweite Formabschnitt (70, 156) wenigstens einen zweiten Seitenabschnitt einschließt,
    wobei der erste und der zweite Formabschnitt (68, 70, 154, 156) selektiv, in der ersten bzw. der zweiten Konfiguration, angeordnet werden können derart, dass einer von dem wenigstens einen ersten Seitenabschnitt und dem wenigstens zweiten Seitenabschnitt einen der wirksamen Seitenabschnitte definiert.
  3. . Formungsmechanismus nach Anspruch 2, wobei:
    (a) der wenigstens eine erste Seitenabschnitt zwei erste Seitenabschnitte einschließt, die durch die erste Breite entfernt voneinander angeordnet sind, und die wirksamen Seitenabschnitte in der ersten Konfiguration definieren, und
    (b) der wenigstens eine zweite Seitenabschnitt zwei zweite Seitenabschnitte einschließt, die durch die zweite Breite entfernt voneinander angeordnet sind, und die wirksamen Seitenabschnitte in der zweiten Konfiguration definieren.
  4. . Formungsmechanismus nach Anspruch 3, wobei die ersten Seitenabschnitte seitlich zwischen den zweiten Seitenabschnitten angeordnet sind.
  5. . Formungsmechanismus nach Anspruch 4, der ferner eine Biegeplattenbaugruppe (110, 158, 160) einschließt, die eine Biegefläche (114, 116) hat, die mit einem Scheitelabschnitt (136) der Heftklammer (58) in Eingriff gebracht werden kann, wobei in der ersten Konfiguration sowohl die ersten als auch die zweiten Seitenabschnitte in Ausrichtung mit der Biegefläche angeordnet sind.
  6. . Formungsmechanismus nach Anspruch 4, wobei der erste und der zweite Formabschnitt (68, 70, 154, 156) aneinander gekoppelt sind, um sich zusammen im Wesentlichen in der vertikalen Richtung zu bewegen.
  7. . Klammerhefter, der Folgendes umfasst:
    (a) den Formungsmechanismus nach Anspruch 3,
    (b) einen Treiber (126, 152, 154), der einen ersten und einen zweiten Treibabschnitt (128, 130, 152, 154) einschließt, die Treibflächen mit einer ersten bzw. einer zweiten Treibbreite haben, um die Heftklammern (58) einer ersten und einer zweiten Scheitelgröße in der ersten bzw. der zweiten Konfiguration in einen unterhalb des Treibers angeordneten Stapel zu treiben,
    wobei der erste Formabschnitt (68, 154) eine Aussparung zwischen den ersten Seitenabschnitten definiert, der erste Treibabsclmitt (128, 152) in der Aussparung angeordnet ist und der Treiber mit wenigstens einem der Formabschnitte verknüpft ist, für eine Bewegung mit demselben zwischen der ersten und der zweiten Konfiguration.
  8. . Formungsmechanismus nach Anspruch 1, der ferner einen Nocken (108) umfasst, der drehbar mit wenigstens einem der Formabschnitte (68, 70) verknüpft ist, wobei der wenigstens eine Formabschnitt durch den Nocken exzentrisch bewegt werden kann, zwischen einer Position, die der ersten Konfiguration entspricht und einer anderen Position, die der zweiten Konfiguration entspricht.
  9. . Formungsmechanismus nach Anspruch 1, der ferner Folgendes umfasst:
    (a) eine Biegeplattenbaugruppe (110, 158, 160), die eine Biegefläche (114, 116) hat, die mit einem Scheitelabschnitt (136) einer Heftklammer in Eingriff gebracht werden kann, wobei die Biegefläche Folgendes hat:
    (i) eine erste Breite in der ersten Konfiguration und
    (ii) eine zweite Breite, die größer ist als die erste Breite, in der zweiten Konfiguration und
    (b) wobei die wirksamen Seitenabschnitte der Formbaugruppe seitlich angrenzend an die Beigefläche und auf entgegengesetzten Seiten derselben angeordnet sind und durch einen Formraum getrennt sind und
    (c) wobei die wirksamen Seitenabsclmitte und die Biegeplattenbaugruppe wirksam verknüpft sind und zu einer Formungsposition bewegt werden können, wobei die Biegefläche in dem Formraum angeordnet ist derart, dass die wirksamen Seitenabschnitte die Schenkel der Heftklammer um die Biegefläche biegen, um eine erste oder eine zweite Scheitelbreite der Heftklammer zu erzeugen, die der ersten oder der zweiten Breite der Formabschnitte entspricht, wenn er sich in der ersten bzw. der zweiten Konfiguration befindet.
  10. . Formungsmechanismus nach Anspruch 9, wobei:
    (a) die Biegeplattenbaugruppe (110, 158, 160) Folgendes einschließt:
    (i) einen ersten Plattenabschnitt (114, 158), der die erste Breite der Biegefläche hat, und
    (ii) einen zweiten Plattenabschnitt (116, 160), der die zweite Breite der Biegefläche hat,
    (b) wobei die Biegeplattenbaugruppe beweglich mit der Formbaugruppe verknüpft ist derart, dass der erste und der zweite Plattenabschnitt in der ersten bzw. der zweiten Konfiguration selektiv in einer Biegeposition zwischen den wirksamen Seitenabschnitten und an dieselben angrenzend angeordnet werden können derart, dass der eine von dem ersten und dem zweiten Plattenabschnitt, der in der Biegeposition angeordnet ist, die Biegefläche definiert.
  11. . Formungsmechanismus nach Anspruch 10, wobei:
    (a) der erste Formabschnitt (68, 154) wenigstens einen ersten Seitenabschnitt einschließt,
    (b) der zweite Formabschnitt (70, 156) wenigstens einen zweiten Seitenabschnitt einschließt, wobei der erste und der zweite Formabschnitt, in der ersten bzw. der zweiten Konfiguration, selektiv angeordnet werden können derart, dass einer von dem wenigstens einen ersten Seitenabschnitt und dem wenigstens einem zweiten Seitenabschnitt mit Zwischenraum seitlich angrenzend an die Biegefläche angeordnet ist und einen der wirksamen Seitenabschnitte definiert, und
    (c) die Biegeplattenbaugruppe elastisch gegen einen der Formabschnitte vorgespannt wird derart, dass eine Bewegung desselben zwischen der ersten und der zweiten Konfiguration eine Bewegung der Biegeplattenbaugruppe zwischen denselben bewirkt.
  12. . Formungsmechanismus nach Anspruch 11, wobei:
    (a) der wenigstens eine erste Seitenabschnitt zwei erste Seitenabschnitte umfasst, die durch die erste Breite des ersten Formabschnitts entfernt voneinander angeordnet sind und die wirksamen Seitenabschnitte in der ersten Konfiguration definieren, wobei der erste Formabschnitt eine Aussparung zwischen den ersten Seitenabschnitten definiert, und
    (b) die Biegeplattenbaugruppe elastisch vorgespannt wird derart, dass der erste Plattenabschnitt innerhalb der Aussparung aufgenommen wird und sich der zweite Plattenabschnitt in Berührung mit den ersten Seitenabschnitten befindet.
  13. . Formungsmechanismus nach Anspruch 10, wobei der erste und der zweite Plattenabschnitt einen einteiligen Aufbau haben.
  14. . Klammerhefter (10), der wenigstens eine erste und eine zweite Konfiguration hat, wobei der Klammerhefter Folgendes umfasst:
    (a) einen Heftklammer-Formungsmechanismus nach Anspruch 1,
    (b) einen Treiber (126, 152, 154), der eine Treibfläche hat, die in einer Treibrichtung gegen wenigstens eine der Heftklammern bewegt werden kann, um die wenigstens eine der Heftklammern in einen unterhalb desselben angeordneten Stapel zu treiben, wobei die Treibfläche Folgendes hat:
    (i) eine erste Treiberbreite in der ersten Konfiguration, um die Heftklammern mit der ersten Scheitelgröße in einen unterhalb der Heftklammern angeordneten Stapel zu treiben, und
    (ii) eine zweite Treiberbreite, die breiter ist als die erste Treiberbreite, in der zweiten Konfiguration, um die Heftklammern mit der zweiten Scheitelgröße in einen unterhalb der Heftklammern angeordneten Stapel zu treiben,
    wobei der Treiber mehrere Teile (128, 130) hat, die aneinander gekoppelt sind und die zusammenwirken, um die Treibfläche zu bilden.
  15. . Klammerhefter nach Anspruch 14, wobei der Treiber Folgendes umfasst:
    (a) ein erstes Treiberblatt (128, 152), das die erste Treiberbreite hat und die erste Konfiguration definiert, und
    (b) ein zweites Treiberblatt (130, 154), das die zweite Treiberbreite hat und die zweite Konfiguration definiert.
  16. . Klammerhefter nach Anspruch 15, der ferner einen Treiberstellantrieb (64) umfasst, der in der einen der Konfigurationen antreibend für eine gekoppelte Bewegung in der Treibrichtung mit dem ersten und dem zweiten Treiberblatt verknüpft ist und in der anderen Konfiguration antreibend für eine Bewegung in der Treibrichtung mit nur einem der Treiberblätter verknüpft ist.
  17. . Klammerhefter (10) zum Klammern von Heftklammern (58) mit wenigstens einer ersten und einer zweiten Scheitelgröße, wobei der Klammerhefter Folgendes umfasst:
    (a) einen Rahmen (12),
    (b) einen Heftklammer-Formungsmechanismus nach Anspruch 1,
    (c) einen Treiber (126, 152, 154), der mit dem Rahmen verknüpft und dafür konfiguriert ist, die Heftklammern in einem Heftbereich in einen Stapel zu treiben, und
    (d) eine Stauchbaugruppe, die an dem Rahmen angebracht ist und wobei die Stauchbaugruppe Folgendes einschließt:
    (i) wenigstens ein Stauchelement (162), das eine Stauchfläche (164) hat, die in Bezug auf einen Schenkel (138) einer der Heftklammern angeordnet ist und längs eines Stauchweges bewegt werden kann, um den Schenkel in einem im Wesentlichen gleichen Berührungswinkel in Eingriff zu nehmen, ungeachtet dessen, ob die Heftklammer die erste oder die zweite Scheitelgröße hat.
  18. . Klammerhefter nach Anspruch 17, wobei das wenigstens eine Stauchelement (162) wenigstens einen Stauchflügel (172) einschließt, der schwenkbar um einen Drehpunkt (174) an dem Rahmen angebracht ist derart, dass der Stauchweg im Wesentlichen bogenförmig in Bezug auf den Heftbereich ist, wobei der Weg in Bezug auf den Heftbereich zwischen vorbestimmten Positionen, die der Scheitelgröße der Heftklammer entsprechen, bewegt werden kann, um den Berührungswinkel aufrechtzuerhalten.
  19. . Klammerhefter nach Anspruch 18, wobei:
    (a) der Rahmen (12) wenigstens einen Schlitz (176) definiert,
    (b) der wenigstens eine Stauchflügel (172) einen Drehzapfen (174) einschließt, der schwenkbar mit dem Rahmen verbunden ist, und
    (c) der Drehzapfen jedes des wenigstens einen Stauchflügels schwenkbar innerhalb des wenigstens einen Schlitzes angebracht ist, wobei er zwischen den vorbestimmten Positionen verschoben werden kann.
  20. . Klammerhefter nach Anspruch 17, wobei:
    (a) die Stauchfläche (164) in einer Stauchrichtung zu dem Schenkel (138) hin bewegt werden kann, um den Schenkel senkrecht zu der Stauchrichtung zu biegen.
  21. . Klammerhefter nach Anspruch 20, wobei das wenigstens eine Stauchelement (162) verschiebbar mit dem Rahmen (12) verknüpft ist, für eine im Allgemeinen lineare Bewegung längs der Stauchrichtung.
  22. . Klammerhefter nach Anspruch 21, der ferner ein Drehelement (18) umfasst, das die im Allgemeinen lineare Bewegung des wenigstens einen Stauchelements (162) antreibt.
  23. . Klammerhefter nach Anspruch 17, wobei das wenigstens eine Stauchelement (162) zwei Stauchelemente einschließt, wobei das eine der Stauchelemente um einen ersten Drehpunkt (174) geschwenkt werden kann und das andere der Stauchelemente um einen zweiten Drehpunkt (174) geschwenkt werden kann und wobei der erste und der zweite Drehpunkt im Verhältnis zueinander bewegt werden können.
  24. . Klammerhefter nach Anspruch 23, wobei der erste und der zweite Drehpunkt (174) im Verhältnis zueinander in einer Richtung bewegt werden können, die im Wesentlichen senkrecht zu einer Treibrichtung des Treibers ist.
EP00942761A 1999-06-11 2000-06-12 Hefter mit vorrichtung zum formen von unterschiedlich grossen klammern Expired - Lifetime EP1220737B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US13860199P 1999-06-11 1999-06-11
US138601P 1999-06-11
PCT/US2000/016112 WO2000076730A1 (en) 1999-06-11 2000-06-12 Stapler for forming staples to various sizes

Publications (3)

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EP1220737A1 EP1220737A1 (de) 2002-07-10
EP1220737A4 EP1220737A4 (de) 2007-09-12
EP1220737B1 true EP1220737B1 (de) 2010-11-17

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EP (1) EP1220737B1 (de)
JP (1) JP2003501281A (de)
CN (1) CN1236896C (de)
DE (1) DE60045251D1 (de)
HK (1) HK1048785A1 (de)
TW (1) TW490367B (de)
WO (1) WO2000076730A1 (de)

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JP2005053043A (ja) * 2003-08-01 2005-03-03 Max Co Ltd ステープル脚の折り曲げ機構
JP2005081520A (ja) 2003-09-10 2005-03-31 Max Co Ltd ステープラーの成形・打込機構
TW200842046A (en) 2007-04-20 2008-11-01 Univ Nat Taiwan Science Tech Versatile stapler with switch modes and switching method of the same
JP5104484B2 (ja) * 2008-04-01 2012-12-19 マックス株式会社 ステープラにおけるステープルの幅調整方法
JP5359694B2 (ja) * 2008-10-17 2013-12-04 マックス株式会社 ステープラのクリンチャ機構
SE534656C2 (sv) * 2010-02-11 2011-11-08 Isaberg Rapid Ab Bockstansarrangemang
TW201236831A (en) * 2011-03-10 2012-09-16 Aplus Pneumatic Corp Carton sealing machine capable of being applied to various sizes of carton sealing nails
CN103358282B (zh) * 2013-07-24 2015-12-23 江苏高博智融科技有限公司 一种书本订书器
JP6870283B2 (ja) * 2016-10-31 2021-05-12 マックス株式会社 ステープラ
GR1009808B (el) * 2019-10-08 2020-09-08 Ιωαννης Μυρωνα Νουρης Μονομπλοκ κινησης κεφαλης συρραπτικου

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CN1236896C (zh) 2006-01-18
HK1048785A1 (zh) 2003-04-17
DE60045251D1 (de) 2010-12-30
EP1220737A4 (de) 2007-09-12
EP1220737A1 (de) 2002-07-10
WO2000076730A1 (en) 2000-12-21
TW490367B (en) 2002-06-11
JP2003501281A (ja) 2003-01-14
CN1370102A (zh) 2002-09-18

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