EP0379774A2 - Bearbeitung der Seitenteile eines auf Leisten aufgespannten Schuhoberteiles - Google Patents

Bearbeitung der Seitenteile eines auf Leisten aufgespannten Schuhoberteiles Download PDF

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Publication number
EP0379774A2
EP0379774A2 EP89306945A EP89306945A EP0379774A2 EP 0379774 A2 EP0379774 A2 EP 0379774A2 EP 89306945 A EP89306945 A EP 89306945A EP 89306945 A EP89306945 A EP 89306945A EP 0379774 A2 EP0379774 A2 EP 0379774A2
Authority
EP
European Patent Office
Prior art keywords
shoe
toe
support
last pin
holddown
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.)
Granted
Application number
EP89306945A
Other languages
English (en)
French (fr)
Other versions
EP0379774A3 (de
EP0379774B1 (de
Inventor
Terence John Brown
John Davies
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.)
USM Espana SA
Noxet UK Ltd
Original Assignee
USM Espana SA
British United Shoe Machinery Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from GB898901557A external-priority patent/GB8901557D0/en
Priority claimed from GB898909971A external-priority patent/GB8909971D0/en
Application filed by USM Espana SA, British United Shoe Machinery Ltd filed Critical USM Espana SA
Publication of EP0379774A2 publication Critical patent/EP0379774A2/de
Publication of EP0379774A3 publication Critical patent/EP0379774A3/de
Application granted granted Critical
Publication of EP0379774B1 publication Critical patent/EP0379774B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43D—MACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR
    • A43D37/00—Machines for roughening soles or other shoe parts preparatory to gluing

Definitions

  • This invention is concerned with shoe supports for use in a machine for operating on side wall portions of a lasted shoe upper and with machines for operating progressively along side wall portions of a lasted shoe upper.
  • shoe support which is described as for use in a machine for roughing marginal portions of shoe bottoms, is disclosed in GB-A 1431127, which shoe support comprises a last pin for supporting, bottom uppermost, a shoe last on which a lasted shoe upper is carried, a toe support for supporting the toe end of a lasted shoe supported by the last pin, and means for urging the toe support upwardly, the arrangement being such that in load­ing a shoe on the shoe support the last is first placed on the last pin, whereafter relative movement, in a direction lengthwise of the shoe bottom, is effected between the last pin and the toe support, which movement is terminated when the toe is engaged by an abutment associated with the toe support, whereupon the toe support is raised into engagement with the toe end of the shoe, and by such engagement, urges the shoe to tilt about the last pin until the last pin engages the periphery of the last pin hole formed in the last, thereby locking the shoe in position in the shoe support.
  • the heightwise position of the tool in relation to the shoe is determined by the engagement with the shoe bottom of a stop associated with the tool; in the particular case the stop is in the form of a fork the "prongs" of which are disposed at opposite sides of the tool.
  • the heightwise position of the tool relative to the shoe bottom is determined under computer control, to which end it is of course necessary to maintain certain portions of the shoe bottom, e.g. the heel seat and the toe end each at known height datum.
  • the height of the toe end of the shoe will depend essentially upon the amount of heightwise movement which has to be effected to achieve the binding effect of the last pin hole on the last pin, so that the heightwise position of the toe end of the shoe cannot be predetermined.
  • the heightwise position of the heel seat of the shoe will, albeit to a lesser degree, also be dependent upon the amount of such heightwise movement of the toe end of the shoe.
  • a shoe support for use in a machine for operating on side wall portions of a lasted shoe upper, comprising a last pin for supporting, bottom uppermost, a shoe last on which a lasted shoe upper is carried, a holddown mounted for movement into and out of an operative position in which it is disposed in opposed relationship with the last pin, first motor means for bringing the holddown and the heel seat of a lasted shoe upper supported by the last pin into engagement with one another and for positioning, by such engagement, the heel seat at a heel seat height datum as determined by the holddown when in its operative position, a toe support for supporting the toe end of a lasted shoe supported by the last pin, a toe holddown mounted for movement into and out of an operative position in which it is disposed above the toe end of a lasted shoe supported by the last pin, and second motor means for bringing the toe holddown and the toe end of such lasted shoe into engagement with one another and for positioning, by such engagement, the to
  • the shoe support in accordance with the invention preferably also comprises last pin locking means for locking the last pin against heightwise movement, said means being operable after the shoe supported by the last pin has been brought with its heel seat to the heel seat height datum.
  • the last pin support is mounted for movement in a direction extending transversely of the bottom of a shoe supported by the last pin and toe support and heel end centralising means is provided for centralising the heel end of the shoe supported by the last pin by engagement with opposite sides thereof, said means being operable after the operation of the first motor means to bring the heel seat of the shoe to the heel seat height datum.
  • the heel end centralising means is preferably actuated prior to the last pin locking means, and said latter means serves also to lock the last pin support, with the shoe supported on the last pin in a centralised condition, against movement in said direction extending transversely of the shoe bottom.
  • the last pin is conveniently supported by a mounting itself supported by the last pin support, the arrangement being such that the mounting and the support have arcuate mating faces whereby the mounting, and thus the last pin therewith, can move along an arcuate path in a direction transversely of the shoe bottom. In this way when the shoe bottom is moved into engagement with the holddown the shoe bottom can be levelled appropriately to the holddown by the last pin being moved to the extent required along said arcuate path. Thereafter the last pin, and thus the heel end of the shoe, is held in its position by the action of the heel end centralising means.
  • the mating faces of the last pin mounting and the last pin support are maintained in frictional engagement with one another.
  • the shoe support in accordance with the invention also comprises toe support locking means for locking the toe support against heightwise movement, said means being operable after the operation of the second motor means to position the toe end of the shoe at the toe height datum.
  • the toe support may be locked in its heightwise position prior to the pivoting movement of the last pin being effected.
  • the second motor means remains operable to hold the toe end of the shoe positioned at the toe height datum during the operation of the third motor means to urge the last pin to pivot as aforesaid and the toe support locking means is operable after the operation of the third motor means to urge the last pin to pivot as aforesaid.
  • toe end centralising means is provided for centralising the toe end of the shoe when supported by the toe support by engagement with opposite sides thereof; such centralising means, furthermore, would conveniently be operated after the operation of the first motor means.
  • the axis about which the last pin pivots as aforesaid is preferably a notional one, which lies in the body of the shoe last supported on the last pin.
  • the last pin is supported (in the particular case on the last pin mounting) by a four-bar linkage arrangement which is actuated by the third motor means, said arrangement being effective, over a range of movement, to maintain the tip of the last pin substantially unmoved.
  • the last pin support is mounted for movement in a direction extending lengthwise of a shoe support by the shoe support and is resiliently urged towards the toe support, means being provided for moving the toe support and toe holddown together heelwardly in response to the presence of the toe end of a shoe in contact with the toe holddown, and furthermore a heel abutment being provided which is engaged by the heel end of the shoe as a result of such heelward movement of the toe support and toe holddown, such engagement of the heel abutment serving to terminate the heelward movement of the toe support and toe holddown and to actuate the first and second motor means.
  • engagement of the heel abutment as aforesaid also causes the toe centralising means to be operated.
  • the last pin is preferably tilted, under the action of the third motor means, away from the toe support during the loading of a shoe, and is moved to the vertical, or substantially vertical, position prior to the operation of the first motor means to bring the holddown and shoe bottom into engagement.
  • the shoe support in accordance with the invention is especially, but not exclusively, intended for use in a machine for operating progressively along side wall portions of a lasted shoe upper, said machine further comprising a tool support arrangement by which a holder for a rotary radial tool is supported, drive means for effecting relative movement between the shoe support and the tool support arrangement in directions extending lengthwise, widthwise and heightwise of the bottom of a shoe support by the shoe support whereby a tool supported by the holder can be caused to operate progressively along the side wall portions of a shoe supported by the shoe support, and means for retracting the holddown and toe holddown of the shoe support from their respective operative positions so as to ensure that said holddown and toe holddown will not interfere with the passage of the tool in operating progressively along the side wall portions of the lasted shoe upper.
  • the retracting means is operable to retract the toe holddown as aforesaid after the operation of the toe support locking means.
  • the toe holddown could be retracted at any time after such locking, it has been found preferable to cause the toe holddown to be retracted in timed relation with the progressive operation of the tool.
  • the toe holddown is returned to its operative position.
  • the retracting means is operable to retract the holddown as aforesaid after the operation of the last pin locking means, and moreover, where heel end centralising means is provided, said means is caused to release the heel end of the shoe and be retracted together with the holddown to an out-of-the-way position.
  • the retraction of the holddown takes place in timed relation with the progressive operation of the tool.
  • the toe holddown is returned to its operative posiion prior to the retraction of the holddown.
  • the toe holddown serves to hold the shoe in position, in cooperation with the securement by the inter-action of the last pin and toe support.
  • the machine in accordance with the invention thus comprises a base (10) supporting, by a bracket (12), a pivot shaft 14 about which a support 16 for a shoe support 18′ can pivot.
  • the shoe support is arranged to support a shoe S bottom uppermost, with the toe end thereof facing towards the front of the machine, i.e. towards the operator.
  • the base (10) supports a support column structure (22) carrying a casting (24) on which is supported, for pivotal movement about a vertical axis, a support casting 34 having two upstanding lugs 32 between which tool supporting means generally designated 26′ is supported for pivotal movement about a horizontal axis 31.
  • the machine further comprises a first stepping motor (144) mounted on the base (10) and effective to cause pivotal movement of the shoe support 18′ to take place about the horizontal axis provided by the shaft 14 (X-axis movement).
  • a second stepping motor (84) is provided, carried by the casting (24) and effective to cause pivotal movement of the support casting 34 about its vertical axis (Y-axis movement).
  • a third stepping motor (122 - described in EP-A0043645) is supported by the support casting 34, rearwardly of its vertical pivot, to cause it, and thus the tool supporting means 26′ supported thereby, to pivot about its horizontal axis 31 (Z-axis movement).
  • the X-, Y- and Z-axes represent three coordinate axes along which a tool supported by the tool supporting means 26′ can move.
  • the tool supporting means 26′ of the machine in accordance with the invention comprises a housing 650 mounted for pivotal movement about said horizontal axis 31. From a forward face of the housing projects a hollow tubular arm 652 within which is accommodated, for rotational movement therein, a support rod 654. At the forward end of said rod is a plate 656 supporting two forwardly projecting arms 658, which are spaced apart widthwise of the machine and on each of which is mounted, for pivotal movement, a pair of links 660, 662, upper ends of which pivotally support a plate 664.
  • the links 660, 662, together with the plate 664 and arms 658, thus comprise a first parallel linkage arrangement of the tool supporting means.
  • a further plate 666 Fixedly secured to a forward end of the plate 664, and projecting forwardly therefrom, is a further plate 666, in a forward, bifurcated, end of which is pivotally mounted a block 668 forming part of a tool holder generally designated 670. Also secured to the tool holder, at the left-hand side thereof, is a further link 672 which is in turn pivotally connected to each of the left-hand links 660, 662.
  • the links 660, 662, tool holder 670, link 672 and composite plate 664, 666 thus constitute a second parallel linkage of the tool supporting means.
  • the various pivots are so arranged in relation to one another that the tool holder is caused to pivot about an axis (a virtual centre) which passes through a point P, through which point also passes the axis of the support rod 654.
  • a point P a virtual centre
  • the axis of rotation thereof also passes through said point P.
  • the point P represents a height datum of the machine in a desired relationship with which the bottom of a shoe supported by the shoe support 18′ can be positioned by means of a holddown member 450 and toe support means 470′ of said support.
  • the point P lies vertically above the axis 14 of the shoe support 18′.
  • the links 662 carry therebetween a block 674 to which is pivotally connected a forward end of a push-rod 676, the rearward end of which is similarly pivotally connected to a block 678 which is mounted on a pulley 680 freely rotatable about a drive shaft 682.
  • the pulley 680 is caused to rotate about said shaft by a timing belt 684 entrained around a second pulley 688, a tensioning pulley 690 being provided for maintaining the tension in the belt.
  • a third pulley 692 around which is entrained a second timing belt 694 meshing with a fourth, drive, pulley 696 secured on the drive shaft 682.
  • the shaft 682 is driven by a stepping motor 698.
  • a similar drive arrangement comprising a stepping motor 700 acting through pulleys 702, 704, 706 (the fourth not being shown) and timing belts (not shown), the pulley 706 being fixedly mounted on the support rod 654.
  • the tool holder 670 is arranged to support a tool-supporting shaft 218 which is caused to rotate by means of a reversible motor 232, itself mounted on the tool holder 670 and being operatively connected to the shaft 218 via a belt-and-pulley connection (not shown).
  • the lower end of the shaft 218 is adapted to receive a suitable roughing tool generally designated 250.
  • this tool may be any suitable roughing tool, e.g. a radial wire brush or an abrasive-covered wheel, in the emodiment shown in the drawings the tool comprises two discs 252 spaced apart from one another by three pins 254, each pin supporting a plurality of thin plate-like roughing elements 256.
  • a suitable roughing tool e.g. a radial wire brush or an abrasive-covered wheel
  • each plate-like element 256 is loosely mounted on its pin for pivotal movement thereon, is generally oval in shape and comprises, at each semi-circular end a plurality of teeth, the teeth providing a roughing surface of the tool.
  • the various plate-like elements are urged outwardly about the pins 252, by virtue of centrifugal force, in a flail-like action.
  • each pin since a plurality of such elements is provided on each pin, the amount to which each element is thrown outwardly by centrifugal force will be determined to some degree by the contour of the shoe which is engaged thereby, each set of such elements thus together forming a shape, upon engagement with the shoe, complementary to the contour of the portion of the side wall of the shoe being roughed thereby. It will also be appreciated that, using a tool as described above, any irregularites in the side wall portion of the shoe being operated upon may be compensated for by the action of the elements 256.
  • the shoe support 18′ in accordance with the invention comprises a support 720 for a last pin 722′, said support itself comprising a rod 724, mounted at its lower end, by a spherical mounting 726, on the support 16 of the shoe support and extending upwardly, together with a sleeve 728 which is slidable on the rod 726 and carries at its upper end a mounting 730′ for the last pin 722′.
  • the position of the sleeve 728 relative to the rod 724 can be set by selectively inserting a pin (not shown) in one of a number of apertures 732, the pin being arranged to rest in engagement with the top end of the rod 724.
  • a forked member 734 is secured towards the lower end of the rod 724 and in turn supports, between its forks, a piston-and-cylinder arrangement 736, the piston rod 738 of which extends upwardly and is connected at its upper end by a universal joint to a bifurcated projection 740′ formed on a block made up of two links 850 fixedly con­nected together by a cross-strap and pivotally mounted on a plate 852. Also pivotally mounted on said plate 852 is a further block also made up of two links 854 connected by a cross-strap, each of the links 850, 854 also being pivotally connected to a carrier block 856 in which the last pin 722′ is secured.
  • the links 850, 854 thus constitute a four-bar linkage arrangement on which the last pin is mounted and which is effective, in response to actuation of the piston-and-cylinder arrangement 736 to cause the last pin to pivot, over a range of movement in­cluding the vertical position of the last pin, about a notional axis 742′ which lies at or adjacent the tip of the last pin.
  • the plate 852 is in mating arrangement, e.g. by a slide-and-groove arrangement generally designated 858, with the mounting 730′ for the last pin 722′. More particularly the mating surfaces of the mounting 730′ and plate 852 are arcuate such that the last pin 722′ can move along an arcuate path in a direction transversely of the shoe bottom, said mating surfaces being maintained in frictional engagement with one another. The centre of curvature of the arcuate surfaces is at a point beyond the tip of the last pin, ideally in the plane of the heel seat of the shoe supported by the shoe support.
  • the sleeve 728 carries a semi-­cylindrical member 744 which extends around the lower end of the rod 724.
  • the member 744 and rod 724 pass between two clamp plates 746, 748 which are held spaced apart on four rods 750 (two only shown in Fig. 3).
  • the plate 748 also supports, for limited sliding movement in a direction extending transversely of the bottom of a shoe supported by the last pin, a further semi-cylindrical member 752 which fits about the opposite side of the rod 724 from that contacted by the member 744.
  • a short-stroke piston-and-cylinder arrangement 754 is provided, whereby the members 744, 752 are urged against the rod to clamp it in any position to which it has been moved, both heightwise and widthwise, in the loading of a shoe, as will be explained hereinafter.
  • clamp plates 746, 748 and the piston-­and-cylinder arrangement 754 is pivotally supported by two links 756 which are carried on blocks 758 in turn carried on the support 16 for the shoe support. Said assembly can thus pivot to a limited degree, in a direction extending lengthwise of the bottom of a shoe supported by the last pin, as the loading of the shoe is taking place.
  • a balancing arrangement generally designated 760 comprising a rod 762 pivotally mounted at one end on the cylinder 736 and having a central portion 764 of enlarged diameter accommodated in a block 766 itself carried in blocks 768 secured to strut members 770 forming part of the support 16.
  • the rod 762 carries a compression spring 772, washers 774 being provided at opposite ends of the springs for abutment against surfaces provided either by the portion 764 or by lock nut 776 threadedly secured to the rod.
  • the effect of the springs 772 is thus to centralise the rod in relation to the block 766, thus to establish the initial position of the last pin support, while nevertheless allowing it to move in any direction on the spherical mounting 726.
  • the shoe support in accordance with the invention also comprises a combined holddown and heel end centralising assembly generally designated 780.
  • This assembly is mounted on a frame 782 which is supported for pivotal movement about an axis 784 on the support 16.
  • two piston-and-cylinder arrangements 786 are carried by the support 16 and the piston rod 788 of each such arrangement is pivotally connected with a lug 790 formed on the underside of the frame 782.
  • the assembly 780 is generally similar, except as hereinafter described to the holddown and heel end centralising means of the shoe support described in GB-A 2077090, and full details of the assembly will therefore not be described in the present specification.
  • the assembly 780 thus comprises a holddown 450 which is movable into and out of an operative position in which it lies in opposed relationship with and above the last pin 722′ and provides a height datum for the heel seat of a shoe which is placed upon the last pin and urged by the action of piston-and-cylinder arrangement 736 into engagement therewith.
  • the movement of the holddown into and out of its operative position is effected by means of a piston-and-cylinder arrangement (not shown, but designated 460 in the aforementioned specification).
  • the arrangement 736 constitutes means for bringing the heel seat of a shoe and the holddown 450 into engagement at the heel seat height datum.
  • the heel end centralising means comprises first and second sets of clamps 390, 392 which respectively engage the heel end of a shoe in the region of the feather line and in the region of the top line thereof; again, details of these clamps are to be found in GB-A 2077090.
  • the first set of clamps 390 are movable towards one another each through the same distance to engage the shoe in a region which is generally symmetrical about the toe-­to-heel centre line of the shoe and thus effectively centralise the heel end of the shoe about the centre line of the shoe support.
  • the second set of clamps 392 engage the shoe in a relatively asymmetrical region thereof and can move towards one another through different distances to accommodate to the asymmetry, serving primarily therefore as clamps to hold the shoe in position as determined by the first set of clamps 390.
  • the two sets of clamps are each actuated by a piston-and-cylinder arrangement (not shown, but designated respectively 406 and 438 in the aforementioned specification).
  • the shoe support also comprises means for determining whether the shoe supported thereby is a left or a right, said means comprising a sensing device (not shown, but designated 610 in the aforementioned specification) which is of the inductance type and senses the position of the second set of clamps 392 in relation to a centre line of the support and thereby determines whether the shoe is a left or a right.
  • a sensing device not shown, but designated 610 in the aforementioned specification
  • the assembly 780 further comprises a heel abutment 380′ in the form of a plate against which the backseam region of a shoe placed on the last pin can be urged thus to determine the lengthwise position of the shoe in the shoe support 18.
  • the plate 380′ is resiliently urged toewardly through a short distance and has associated therewith a proximity switch (not shown) which is actuated when the plate 380′ is caused to retract against the influence of the resilient means.
  • actuation of the proximity switch causes a signal to be supplied to which reference will be made hereinafter.
  • the shoe support 18′ further comprises toe support means generally designated 470′, which comprises a support casting 472 slidably mounted on two rods 356 extending lengthwise of the shoe support.
  • a piston-and-cylinder arrangement 510 is provided a piston rod of which is connected with the toe support means 470′ and the cylinder of which is supported by a support portion forming part of the holddown and heel end centralising assembly 780.
  • a further piston-and-cylinder arrangment 820 is provided for operating a bar lock arrangement (not shown) by which the toe support means 470′ is held locked on the slide rods 356 after a shoe has been loaded and positioned in the shoe support.
  • the toe support means 470′ comprises a toe support or toe pad 792 on which the toe end of a shoe supported by the last pin 722′ can be supported, said toe pad being supported at the upper end of a column 793 itself carried by a piston rod (not shown) of a piston-and-cylinder arrangement 794.
  • the arrangement 794 is supported by a pin extending between a support plate 796 and a front plate 798 secured thereto by spacers 800.
  • the support plate 796 is carried between, and extends heightwise of, the two blocks 472.
  • a bar lock arrangement generally designated 802 is provided which is actuated by a piston-and-cylinder arrangement 804, itself also supported by a pin between the support plate and front plate.
  • the toe support means 470′ also comprises a toe holddown or toe abutment 806 which is pivotally mounted on a support 808, itself mounted for pivotal movement, under the action of a piston-and-cylinder arrangement 810, on a block 812.
  • the block 812 is itself supported by parallel links 814, whereby heightwise movement of the toe abutment 806 can be effected to move it from an operative position, in which it provides a height datum for the toe end of a shoe, to an out-of-the-way position, in which it will not interfere with the access by a roughing tool to side wall portions of the lasted shoe upper.
  • a piston-and-cylinder arrangement 816 is provided a piston rod of which is connected to one of the links 814 by pivot pin 818.
  • the piston-and-cylinder arrangement 816 is secured at its lower end on a lug on the support plate 796.
  • the toe support means 470′ has associated therewith toe end centralising means comprising two upstanding centralising fingers 822 each carried by a piston-and-­cylinder arrangement 824, itself mounted for pivotal movement about an axis extending lengthwise of the bottom of a shoe support by the shoe support whereby the centralising fingers are movable towards and away from one another as well as being movable heightwise under the action of said piston-and-cylinder arrangement 824.
  • the cylinders are pivoted on pivot pins 826 which are inter-connected by a linkage generally designated 828 whereby to effect equal but opposite rotational movement of the pivot pins and thus equal but opposite pivotal movement of the centralising fingers.
  • a piston-and-cylinder arrangement 830 is provided a piston rod 832 of which is connected to said linkage, said arrangement being mounted on the front plate 798.
  • the support 720 is initially in a lowered position and is urged by the balancing arrangement 760 in a direction towards the toe support 470′ as described above.
  • the last pin 722′ is tilted in a direction away from the toe support. In this way the last pin is rendered more accessible for the last pin hole of the last and thus the loading of the shoe is facilitated.
  • the operator then draws the shoe, together with the support 720, toewardly until the shoe abuts the toe abutment 806, causing it to pivot on its support 808.
  • Such pivotal movement causes a rearwardly extending projection 834 on said abutment to be moved relative to a proximity switch 836 on the support 808, thereby signalling the presence of the toe end of the shoe.
  • the toe abutment is held in its raised position under the action of piston-and-cylinder 816 and the support is pivoted (anti-­clockwise during Fig. 3) to bring the toe abutment into its operative position in which it provides a heightwise datum for the toe end of the shoe; also at this time the toe pad 792 is in its retracted position.
  • piston-and-cylinder arrangement 510 is actuated to move the blocks 472 along the rods 356 thus to move the shoe bodily together with the toe support means 470′ towards the heel abutment 480′.
  • the proximity switch associated with said abutment is actuated by the retraction of the heel abutment, thereby creating a further signal which terminates the operation of piston-­and-cylinder arrangement 510 thus to bring the toe support means 470′ to rest with the shoe now held by the various instrumentalities referred to.
  • piston-and-cylinder arrangement 820 is operated to cause the toe support means 470′ to be locked in this position.
  • the shoe support also comprises a linear potentiometer 840 which is mounted at one end on the support portion of the holddown and heel end centralising assembly 780 which supports also the piston-and-cylinder arrangement 510, and the slide of which is connected to the toe support means 470′. In this way, the length of the shoe which is to be operated upon is measured, as a function of the amount of movement of the toe support means 470′ towards the holddown and heel end centralising assembly 480.
  • the holddown 450 providing the height datum for the heel seat region of the shoe is in its operative position and the last pin is retracted.
  • the last pin is raised under low pressure by the action of piston-and-cylinder arrangement 734 to bring the heel seat region of the shoe into engagement with the holddown 450 and also the toe pad 792 is raised under the action of piston-and-cylinder arrangement 794, to bring the toe end of the shoe into the correct heightwise position in relation to the toe abutment 806.
  • the effect of the centralising fingers 822 in combination with the action of piston-and-cylinder arrangement 734 is also to cause the last pin 722′ to be moved along its arcuate path to an extent determined by the shoe bottom contour whereby the shoe bottom is brought into planar engagement with the holddown.
  • the lasted shoe is thus corrected clamped in the shoe support 18 and is ready for the initiation of a side wall roughing operation.
  • the centralising fingers 822 are moved outwardly and retracted by the actuation respectively of piston-and-cylinder arrangements 830 and 824.
  • the roughing tool is then brought from its rest, retracted, position to an operative position in which it engages the side wall portion of the shoe in the region of the breast line of the inside waist thereof; at this stage the shoe is still held not only by the last pin and toe pad as aforesaid, but also by the toe abutment 806 and the clamps 390, 392 and holddown 450.
  • a signal is generated to cause the toe abutment 806 to be pivoted under the action of piston-and-cylinder arrangement 810 and also to be retracted under the action of piston-and-cylinder arrangement 816 acting through the parallel linkage 814.
  • a proximity switch 838 is provided whereby in response to such retraction a signal is generated indicating that such retraction has taken place; in the event of no such signal being generated, the advancing movement of the tool towards the toe end of the shoe will be arrested. After the passage of the tool round the toe end of the shoe, the toe abutment is returned to its operative position.
  • the proximity switch 838 ensures that the heightwise movement under the action of piston-and-cylinder arrangement 826 takes place before the swinging movement of the support 808 under the action of piston-and-cylinder arrangement 810. In this way it is ensured that no collision can take place between the toe abutment 806 and the toe end of the shoe.
  • the clamps 390, 392 are caused to release the heel end of the shoe, the holddown is retracted out of its operative position and the assembly 780 is then moved bodily about the axis 784 to an out-of-the-way position under the action of piston-and-cylinder arrangements 786.
  • the tool can then progressively operate around the heel end of the shoe and back to its starting position at the breast line of the shoe, whereafter the tool is moved out of operative engagement with the shoe and returns to its initial position.
  • the shoe support then returns to its loading/­unloading position and the toe support means 470′ is moved in a direction away from the heel abutment under the action of piston-and-cylinder arrangement 510 thus to release the shoe.
  • the machine has both an "operating" mode and a “teaching” mode.
  • operator-actuatable means in the form of a cursor arrangement (not shown) or a joystick control (also not shown) is provided whereby the path of movement of the tool can be determined; the particular path determination procedure is described in detail in e.g. US-A4541054.
  • the machine For the digitising procedure itself and also for controlling the operation of the machine in its operating mode the machine also comprises computer control means.
  • This means comprises a memory in which a number of programed instructions can be stored for different styles of shoe and also in which a number of sub-routines are stored for processing the data relating to the various styles. Thus one such sub-routine serves to determine the path the tool will follow, based upon the digitised points.
  • a further sub-routine is a grading programme which, according to the shoe length, as "measured" by the shoe support 18 is effective correspondingly to vary the distance between successive digitised points along the X-axis and also proportionately to vary the Y-axis movement, such variation of the X-axis movement also serving to vary the incidence of the Z-axis movement and the pivotal movement about the first and second axes ('camber' and 'tilt' movement) of the tool holder 670.

Landscapes

  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
EP19890306945 1989-01-25 1989-07-07 Bearbeitung der Seitenteile eines auf Leisten aufgespannten Schuhoberteiles Expired - Lifetime EP0379774B1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB898901557A GB8901557D0 (en) 1988-07-20 1989-01-25 Operating on side wall portions of a lasted shoe upper
GB8901557 1989-01-25
GB8909971 1989-05-02
GB898909971A GB8909971D0 (en) 1989-01-25 1989-05-02 Operating on side wall portions of a lasted shoe upper

Publications (3)

Publication Number Publication Date
EP0379774A2 true EP0379774A2 (de) 1990-08-01
EP0379774A3 EP0379774A3 (de) 1991-09-11
EP0379774B1 EP0379774B1 (de) 1994-09-14

Family

ID=26294873

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890306945 Expired - Lifetime EP0379774B1 (de) 1989-01-25 1989-07-07 Bearbeitung der Seitenteile eines auf Leisten aufgespannten Schuhoberteiles

Country Status (5)

Country Link
EP (1) EP0379774B1 (de)
JP (1) JPH02209102A (de)
BR (1) BR8903701A (de)
DE (1) DE68918259T2 (de)
ES (1) ES2058536T3 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009049776A1 (de) 2008-12-18 2010-06-24 Ecco Sko A/S Verfahren und Vorrichtung zum Aufrauen von Schuhschäften

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3645118A (en) * 1970-10-23 1972-02-29 Usm Corp Shoe bottom roughing machines
EP0042671A1 (de) * 1980-06-10 1981-12-30 British United Shoe Machinery Limited Maschine zum kombinierten Aufrauhen der Ränder und zum Ausglasen der Spitzenteile von Schuhböden
GB2154424A (en) * 1984-02-24 1985-09-11 British United Shoe Machinery Shoe support for a machine for use in the manufacture of shoes

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3645118A (en) * 1970-10-23 1972-02-29 Usm Corp Shoe bottom roughing machines
EP0042671A1 (de) * 1980-06-10 1981-12-30 British United Shoe Machinery Limited Maschine zum kombinierten Aufrauhen der Ränder und zum Ausglasen der Spitzenteile von Schuhböden
GB2154424A (en) * 1984-02-24 1985-09-11 British United Shoe Machinery Shoe support for a machine for use in the manufacture of shoes

Also Published As

Publication number Publication date
DE68918259D1 (de) 1994-10-20
JPH02209102A (ja) 1990-08-20
BR8903701A (pt) 1990-11-13
DE68918259T2 (de) 1995-02-16
EP0379774A3 (de) 1991-09-11
EP0379774B1 (de) 1994-09-14
ES2058536T3 (es) 1994-11-01

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