EP0470327A2 - Support de forme pour une machine de montage de la pointe - Google Patents

Support de forme pour une machine de montage de la pointe Download PDF

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Publication number
EP0470327A2
EP0470327A2 EP91104088A EP91104088A EP0470327A2 EP 0470327 A2 EP0470327 A2 EP 0470327A2 EP 91104088 A EP91104088 A EP 91104088A EP 91104088 A EP91104088 A EP 91104088A EP 0470327 A2 EP0470327 A2 EP 0470327A2
Authority
EP
European Patent Office
Prior art keywords
shoe
last support
last
lasting
support
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.)
Withdrawn
Application number
EP91104088A
Other languages
German (de)
English (en)
Other versions
EP0470327A3 (en
Inventor
Gerald Sommer
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.)
INTERNATIONALE SCHUHMASCHINEN CO GmbH
Original Assignee
INTERNATIONALE SCHUHMASCHINEN CO GmbH
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 INTERNATIONALE SCHUHMASCHINEN CO GmbH filed Critical INTERNATIONALE SCHUHMASCHINEN CO GmbH
Publication of EP0470327A2 publication Critical patent/EP0470327A2/fr
Publication of EP0470327A3 publication Critical patent/EP0470327A3/de
Withdrawn legal-status Critical Current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
    • A43D21/00—Lasting machines
    • A43D21/16—Lasting machines with lasting pincers and toe- or heel-embracing wipers
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43D—MACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR
    • A43D23/00—Single parts for pulling-over or lasting machines
    • A43D23/02—Wipers; Sole-pressers; Last-supports; Pincers
    • A43D23/025—Last-supports

Definitions

  • the invention relates to a last support for a device for pinching a shoe unit consisting of a last with an overlaid shoe upper and an insole arranged on the last bottom by means of driven lasting scissors which are movably mounted in a scissor plane, the last support being movably mounted in bearing means and coupled with adjusting means Has carrier element on which a last support is mounted, on which the front part of a shoe unit with the last can be placed in a predetermined spatial orientation.
  • Tip lasting machines as are described, for example, in DE-OS 32 45 120 or US Pat. No. 3,422,474, have a ledge support arranged on a ledge support, which is surrounded by a ring of lasting pliers, which are below the so-called scissor plane which the pincers move.
  • the shoe unit to be machined which is untwisted on its front part, is placed in the area of its front part with the shoe bottom facing down on the last support, its lasting edge protruding from the insole being inserted into the still open lasting pliers. It is then clamped to the last support by a holding-down device acting on the last from above, a heel holder acting on the heel contributing to the correct positioning of the shoe unit during processing.
  • the lasting edge in the front part of the shoe unit is reeved against the insole by the lasting scissors entering under the shoe bottom in a combined translational and swiveling movement from the side and the tip of the shoe.
  • shoe cement was previously introduced into the angular region between the upstanding lasting edge and the associated insole edge, so that the sheared lasting edge is glued to the insole.
  • the shoe unit is pressed with its front part against the lasting scissors with increased pressure after reinserting the lasting edge, before the lasting scissors are moved back into their starting position after the hardening of the shoe cement and the tip-lasting shoe unit is removed from the last support.
  • the front of the shoe is more or less asymmetrical in cross-section
  • the last of the last has a certain curvature, with the result that the shoe bottom of the front of the shoe on the inside of the last is at a much smaller distance from the scissors level on the inside of the shoe than on the outside of the shoe.
  • the resulting height difference of the shoe bottom with respect to the scissors level between the inside and outside of the shoe in the front part of the shoe can be approx. 3 to 4 mm.
  • the shoe cover In order to ensure that the lasting scissors on the inside of the shoe grips the insole, the shoe cover must be adjusted so that the bottom of the shoe unit with the front part is at a sufficiently large distance from the scissors level on the inside of the shoe. The resulting larger stroke of the ledge support must be accepted.
  • the object of the invention is to remedy this.
  • the last support mentioned at the outset is characterized according to the invention in that the last support is pivotably supported on the support element about an axis pointing essentially in the longitudinal direction of the attached shoe unit and is associated with an actuating device which causes a pivoting about this axis, through which the Last support can be pivoted into a position in which the last of the shoe unit in the area to be unwrapped is at least in sections on both sides of the last at approximately the same height with respect to the scissor plane.
  • the last support is pivoted by a corresponding angle about the corresponding axis, so that the shoe bottom on the inside and outside of the shoe is approximately at the same distance from the scissors level, the advantage of a better takeover of the lasting edge material by the lasting scissors during the lasting process is achieved so that the wrinkling is reduced.
  • a more even pressing and ironing of the folded-in lasting edge against the insole is achieved, while overall the shoe unit is in a better position in the lasting machine.
  • the approximately equal distance of the shoe bottom from the scissors level on both sides of the shoe also makes it possible to reduce the stroke of the last support, with the result that the material of the shoe upper held at its lasting edge by the lasting pliers is less stretched, or. that with the same stretch, the shaft material with its lasting edge can be inserted more easily into the open jaws of the lasting pliers when the untwisted shoe unit is inserted into the lasting machine.
  • the last support has two fixed positions, into which it can optionally be moved by the adjusting device and one of which is assigned to a right shoe unit and the other to a left shoe unit, the last support in a first position in relation to the scissor plane Swivel direction and in the other position in a second pivot direction opposite to this is pivoted by a corresponding angle.
  • the actuating device itself can advantageously be arranged on the carrier element; it can expediently have means for selectively adjusting the degree of pivoting of the strip support around the axis mentioned.
  • the actuating device can have a drive source which is coupled to the strip support by means of a positive-locking gear mechanism, which, for example, has a backdrop on the strip support or on a part connected to the drive source and an element which cooperates with it and is movable relative to it .
  • the drive source itself can advantageously be a power-operated cylinder, for example a pneumatic cylinder.
  • the tip lasting machine shown schematically in the detail in FIG. 1 is used for pinching and baling a shoe unit. It is designed as a so-called gluing machine and has a box-like housing 1, on which a last support 2 is mounted, which is partly surrounded by a height-adjustable molded ring 3, which is also mounted on the housing 1 and which is used to apply flowable shoe cement to the insole her front part serves on the last pad 2 shoe unit.
  • tip and bale pliers 4,5 are provided, the mounting of which on the housing 1 is designed in a manner known per se such that they can perform a vertical and lateral pivoting movement with respect to the last support 2.
  • the so-called scissor plane 6 In a plane above the strip support 2 shown in a lowered position in FIG. 1, the so-called scissor plane 6 (see FIG. 8), two lasting scissors or pushers 7 are rotatably mounted about a common pivot point on a carriage 8, which in turn is on corresponding guideways of the housing 1 to the strip support 2 and is mounted so that it can move longitudinally.
  • a drive means for the lasting scissors 7 forming pneumatic working cylinder 9 is arranged, the piston rod 10 of which is connected to a fork piece 11, which has two ends at articulation points 12, 13 with the fork piece 11 or a pair of lasting scissors 7 hinged tabs 14 is coupled to the two lasting scissors 7.
  • the lasting scissors 7 each have cam slots 15, 16, in which rollers 17 arranged on the carriage 8 engage, so that there is a forced link guide for the lasting scissors 7.
  • the shape and arrangement of the cam slots 15, 16 are chosen such that the lasting scissors 7 when actuating the pneumatic working cylinder 9, starting from the position shown in FIG. 2, with their mutually facing, horseshoe-shaped curved cutting edges 18, the aforementioned combined turning and Carry out a translational movement with respect to the last support 2.
  • the last support 2 is designed in the form of an approximately L-shaped shaped piece 20, which on its upper side, which is used to support the shoe bottom of an attached shoe unit, has a transversely corrugated support surface 21 for the shoe bottom, which is divided into two narrow surface areas by a longitudinal groove 22.
  • the shaped piece 20, as can be seen from FIG. 8, is considerably narrower than the front part of an attached shoe unit, indicated at 23, which consists of a last 24 with a shoe upper 25 pulled over it and an insole 26 arranged on the last of the last.
  • the lasting edge of the shoe upper 25 of the front part of the shoe unit 23 projecting beyond the insole 26 is designated by 27.
  • the shaped piece 20 is elongated with its support surface 21, its longitudinal axis being oriented toward the pointed pliers 4 and approximately parallel to the longitudinal axis of a shoe unit 23 attached, as can be seen from FIG. 8.
  • the shoe cover 2 is part of a last support 28, the structure of which can be found in detail in FIG. 3.
  • the last support 28 has a bearing part 30 fastened to the housing 1 at 29, in which a cylindrical rod 31 forming a carrier element for the shoe support 2 is mounted so as to be longitudinally displaceable.
  • the rod 31 is guided non-rotatably via a longitudinal groove 32 formed in it and a roller which engages in it and is arranged on the bearing part 30; it is connected at one end to the piston 34 of a pneumatic cylinder 35 forming the actuating means and at the other carries the shoe support 2.
  • the pneumatic cylinder 35 By corresponding actuation of the pneumatic cylinder 35, the shoe support 2 can thus, starting from the lowered rest position shown in FIG. 1, be shown in FIG.
  • a lasting position is transferred in which the attached shoe unit 23 is at the correct height for the lasting edge 27 to be inserted by the lasting scissors 7.
  • the stroke of the essentially vertically displaceably mounted rod 31 and thus the strip support 2 is limited by two stops 36 (FIG. 4) which are designed in the form of two gearwheels placed on a threaded portion 37 of the rod 31, which have stop surfaces 38, 39 interact with the bearing part 30 or a stop part 40 connected to it.
  • the two gear wheels 36 forming the stops 36 can each be rotated by means of adjusting pinions 41 meshing with them and thus individually adjusted to the threaded portion 37 in accordance with the purpose.
  • a bearing element 42 is mounted on the rod 31 in the region of its upper end such that it can be pivoted to a limited extent about a transverse axis 43.
  • the bearing element 42 is designed in the manner of a two-armed lever; it carries on its end region lying on one side of the transverse axis 43 a bearing bore 44 running at right angles to the transverse axis 43 and on its region lying on the other side of the transverse axis 43 an extension 45 with which it is supported against an adjusting screw 46 which is shown in FIG a corresponding threaded bore 47 of the rod 31 is screwed in and secured in its respective position by a lock nut 48.
  • a cylindrical bearing pin 49 is inserted, on which the fitting 20, which overlaps the bearing element 42, is pivotably mounted.
  • the pivot axis 50 formed by the bearing pin 49 runs, as can be seen from FIG. 5, in the longitudinal direction of the elongated support surface 21 of the last support 2 and thus also essentially in the longitudinal direction of a shoe unit 23 placed on the last support 2 in the manner shown in FIG. 8 Otherwise, the longitudinal axis 50 is aligned essentially parallel to the support surface 21 and is arranged in the center thereof, as can be seen from FIGS.
  • an adjusting device 51 which has a pneumatic cylinder 53 with its cylinder housing at one end pivotably mounted on the rod 31 at 52, the piston rod 54 of which has a cross section which is essentially L- shaped slide 55 is connected, which is guided on a corresponding surface 56 of the rod 31 displaceably in the longitudinal direction of the rod.
  • To guide the slide 55 are three axially parallel guide slots 56, of which the two narrower guide slots 56 cooperate with guide pins 58 arranged on the rod 31 and the guide slot 57 encompasses the adjusting screw 46 which extends at a distance from the guide pins 58.
  • the slider 55 which is precisely guided in this way, has a center projecting, cylindrical bolt 59 lying between the two guide slots 56, which engages in an oblique slot of an integrally formed leg 61 of the molded piece 20, which acts in the manner of a backdrop 60 and is open at the edge.
  • the shaped piece 20 is held in a positive manner in its respective pivot position with respect to the axis 50 via the oblique slot 60 and the bolt 59, both of which together form a positive gear, the pivoting angle being dependent on the respective axial position of the slider 55 depends on the set screw 46 and the guide pins 58.
  • the slide 55 is screwed to the piston 54 of the pneumatic cylinder 53 via a threaded part 62 at the end of the piston rod 54, so that the stroke of the slide 55 can be adjusted as required.
  • a lock nut 63 is used to fix the respectively set stroke.
  • the stroke of the carriage 55 is given by the length of the guide slots 56 and the guide slot 57.
  • the fitting 20 and thus the last support 2 can optionally assume two fixed pivoting positions with respect to the axis 50, one of which (FIG. 6) for the processing of a left shoe unit and the other (FIG. 7) for the Machining a right shoe unit is determined.
  • the strip support 2 In the first position, the strip support 2 is pivoted by a corresponding small angle with respect to the scissor plane 6 indicated horizontally in FIGS. 6, 7 in a first pivoting direction (counterclockwise) and in the other position in the opposite pivoting direction (clockwise) , as can be seen from a comparison of the scissors plane 6 with the plane of the upper side of the molded piece 20 containing the support surface 21, indicated at 64.
  • the tip and ball tongs 4.5 close over the lasting edge 27.
  • the shoe unit 23 is fixed in the correct position on the shoe support 2 by a heel clamp 66 (FIG. 1) which moves from behind and a hold-down cushion 67 (FIG. 8) lowered from above how this is known per se.
  • the front of the shoe unit 23 is snugly pressed onto the support surface 21 of the shoe support 2, which thus determines the spatial orientation of the shoe bottom and the shoe unit itself. This orientation is set appropriately in the longitudinal direction of the shoe by means of the adjusting screw 46 (FIG. 5); in the transverse direction of the shoe, it is predetermined by the pneumatic cylinder 53 of the actuating device 51.
  • the rod 31 is advanced by the pneumatic cylinder 35 (FIG. 3, 4) by the stroke distance preset by the stops 36, whereby the last support 2 and the shoe unit 3 compared to the fixed ones Tip and bale clamps 4.5 are raised.
  • the shoe upper 25 is tightened over the last 24, so that there is a perfect fit.
  • the length of the stroke of the last support 2 is dimensioned such that the shoe unit 23 with the underside of the insole 26, i.e. with the shoe bottom at its opposite side edges, at a certain distance (approx. 1 to 2 mm) above the scissor plane 6, as can be seen from FIG. 8.
  • the lasting scissors 7 are still in an off-center rest position, as corresponds approximately to the representation according to FIG. 2.
  • the approximately natural cross-sectional representation of the last 24 according to FIG. 8 shows that the front of the last 24 is very irregular, the bottom of the shoe having a certain transverse curvature between the inside and outside of the shoe, which is caused by the anatomy of the foot. If, as illustrated in FIG. 8, the support surface 21 of the shoe support 2 is aligned exactly parallel to the scissor plane 6, the insole is at a smaller distance (here indicated by 1 mm) in its edge area on the inside of the shoe due to this asymmetry of the last. above the scissors level 6 as on the outside of the shoe (here indicated with 3 mm).
  • the last support 2 is tilted about the axis 50 pointing in the longitudinal direction of the shoe by a predetermined small angle with respect to the scissor plane 6, as can be seen from FIG. 6 or 7.
  • the pneumatic cylinder can be actuated accordingly 53 transfers the shoe cover 2 into one or the other pivoting or tilting position.
  • the size of the pivoting or tilting angle of the shoe support 2 is selected such that the shoe bottom formed by the underside of the insole 26 runs at its opposite edge regions of at least a substantial part of the shoe front part of interest here at approximately the same distance above the scissors level 6 when the last support 2 and thus the shoe unit 23 are in the lasting position according to FIG. 8.
  • the last support 2 can be pivoted counterclockwise by such an amount that there is a height difference of approximately 1 to 2 mm between the shoe bottom and the scissors level 6 on both sides.
  • the heel clamp 66 (FIG. 1) encompassing the heel end of the shoe unit placed on the last support 2 (FIG. 1) prevents an accurate adjustment of the shoe bottom to the pivoted support surface 21 of the last support 2, the heel clamp 66 is in its holder 70 by means of a pin 71 is freely pivotable about an axis 72 approximately parallel to the longitudinal axis of the shoe and the axis 50.

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  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
EP19910104088 1990-08-10 1991-03-16 Last support for a toe lasting machine Withdrawn EP0470327A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4025456 1990-08-10
DE19904025456 DE4025456A1 (de) 1990-08-10 1990-08-10 Leistenstuetze fuer eine vorrichtung zum spitzenzwicken

Publications (2)

Publication Number Publication Date
EP0470327A2 true EP0470327A2 (fr) 1992-02-12
EP0470327A3 EP0470327A3 (en) 1993-06-02

Family

ID=6412054

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910104088 Withdrawn EP0470327A3 (en) 1990-08-10 1991-03-16 Last support for a toe lasting machine

Country Status (2)

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EP (1) EP0470327A3 (fr)
DE (1) DE4025456A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001045527A1 (fr) * 1999-11-16 2001-06-28 Officine Meccaniche Cerim S.P.A. Machine de traitement automatique de la lisse de chaussures

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2912987A1 (de) * 1979-03-31 1980-10-09 Schoen & Cie Gmbh Klebezwickmaschine
EP0057516A2 (fr) * 1981-01-26 1982-08-11 British United Shoe Machinery Limited Machine pour monter les parties talons de chaussures
DE3714919A1 (de) * 1987-05-05 1988-11-24 Schoen & Cie Gmbh Leistenausricht- und haltevorrichtung an einer fersenzwickmaschine

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1157729A (en) * 1914-01-16 1915-10-26 United Shoe Machinery Ab Lasting-machine.
US3422474A (en) * 1966-02-18 1969-01-21 Jacob S Kamborian Method and apparatus for use in lasting shoes
US4404701A (en) * 1981-02-20 1983-09-20 Usm Corporation Shoe support
US4391012A (en) * 1981-06-02 1983-07-05 International Shoe Machine Corporation Swingable insole rest
DE3245120A1 (de) * 1982-12-07 1984-06-07 Internationale Schuh-Maschinen Co Gmbh, 6780 Pirmasens Vorrichtung zum spitzen- und ballenzwicken einer schuheinheit

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2912987A1 (de) * 1979-03-31 1980-10-09 Schoen & Cie Gmbh Klebezwickmaschine
EP0057516A2 (fr) * 1981-01-26 1982-08-11 British United Shoe Machinery Limited Machine pour monter les parties talons de chaussures
DE3714919A1 (de) * 1987-05-05 1988-11-24 Schoen & Cie Gmbh Leistenausricht- und haltevorrichtung an einer fersenzwickmaschine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001045527A1 (fr) * 1999-11-16 2001-06-28 Officine Meccaniche Cerim S.P.A. Machine de traitement automatique de la lisse de chaussures

Also Published As

Publication number Publication date
DE4025456A1 (de) 1992-02-13
DE4025456C2 (fr) 1993-06-17
EP0470327A3 (en) 1993-06-02

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