EP0426299A2 - Aufzwickmaschine für den Schuhvorderteil - Google Patents

Aufzwickmaschine für den Schuhvorderteil Download PDF

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Publication number
EP0426299A2
EP0426299A2 EP90310648A EP90310648A EP0426299A2 EP 0426299 A2 EP0426299 A2 EP 0426299A2 EP 90310648 A EP90310648 A EP 90310648A EP 90310648 A EP90310648 A EP 90310648A EP 0426299 A2 EP0426299 A2 EP 0426299A2
Authority
EP
European Patent Office
Prior art keywords
wiper
insole
pad
wiping
assembly
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Withdrawn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
EP90310648A
Other languages
English (en)
French (fr)
Other versions
EP0426299A3 (en
Inventor
Anton K. Eberhard
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.)
International Shoe Machine Corp
Original Assignee
International Shoe Machine Corp
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 International Shoe Machine Corp filed Critical International Shoe Machine Corp
Publication of EP0426299A2 publication Critical patent/EP0426299A2/de
Publication of EP0426299A3 publication Critical patent/EP0426299A3/en
Withdrawn legal-status Critical Current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
    • A43D21/12—Lasting machines with lasting clamps, shoe-shaped clamps, pincers, wipers, stretching straps or the like for forming the toe or heel parts of the last
    • 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
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43D—MACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR
    • A43D25/00—Devices for gluing shoe parts
    • A43D25/18—Devices for applying adhesives to shoe parts
    • A43D25/185—Devices for applying adhesives to shoe parts by imprinter plates

Definitions

  • the present invention relates to machines adapted to last the toe region or forward end of a footwear upper assembly and, more generally, to last the toe, forepart and ball regions of such assembly.
  • a wiping step in the lasting process includes drawing or stretching an upper about and onto the last of the footwear upper assembly.
  • any scheme that is concerned with wiping must include mechanical wiping structures that can withstand the frictional forces encountered in the wiping and drawing process through thousands of wiping operations.
  • a still further objective of the present invention is to provide an inflatable wiping pad that is capable of effecting the necessary wiping of the ball region of the margin onto the insole at the ball region thereof and, despite the friction forces encountered in drawing the upper over and about the last, can withstand the thousands of operations.
  • Another objective is to provide a lasting machine that can press all parts at the ball region of the margin of a footwear upper assembly to eliminate adhesion gaps and provide uniform bonding throughout the ball region despite rapid contour changes as are encountered with women's shoes, differing shoe sizes, differing shoe styles and left/right shoes.
  • a machine to last the toe region (or the forward end) of a footwear upper assembly which includes a last, an upper draped about the last and insole at the last bottom.
  • a mechanism is provided to apply an adhesive at the toe region (or forward end) of the assembly near the edge or periphery of the insole, which assembly has an outstanding margin.
  • a wiper mechanism in the machine serves to wipe the outstanding margin onto the insole at the forward end or the region of the insole.
  • the wiper mechanism typically includes two wipers -- a wiper pair -- that typically pivot at the toe region from a location spaced away from the footwear upper assembly to a position wherein wiping is effected of the outstanding margin onto the insole thereof.
  • the wiper mechanism further includes two extensions -- one associated with each of the two wipers of the wiper pair -- that serve to wipe the ball region of the upper assembly.
  • Each extension has at its free end a polyurethane, rubber or other resinous plastic material pad which encounters the footwear upper and performs the actual wiping at the ball region rearwardly thereof.
  • Each of the pads is programmably inflatable to achieve, when fully inflated, the final wiping at the ball region to achieve uniform and continuous bonding at the ball region despite rapid changes in contour at that region because of style, size, and so forth.
  • Fig. 1 there is shown at 101 a portion of a footwear forming machine that embodies the present inventive concepts shown in detail in later figures.
  • the operator is intended to stand facing the machine 101 looking inwardly (i.e., in the plus Y-direction) from the bottom of Fig. 1.
  • Machine parts closest to the operator are considered to be at the front of the machine and machine parts farthest from the operator are considered to be at the back of the machine.
  • Parts moving toward the operator i.e., in the minus Y-direction
  • parts moving away from the operator are considered to have rearward movement.
  • the machine 101 receives a shoe upper assembly 64 partially shown in broken-line form in Fig. 2 and in Fig. 5, consisting of a last 66, an inner sole (or insole) 68 tacked or otherwise secured to the last, and a shoe upper 70 draped about the toe, forepart and ball areas or regions of the last 66.
  • the assembly 64 is presented, bottom down, with the inner sole 68 bearing against the top of an inner sole support or insole rest 14 (see Fig. 3).
  • the toe end extremity of the last bears against a toe bar (not shown) and the margin 72 of the upper 70 extends between the jaws of pincers 16, 18, 20, 22 and 23 in Fig.
  • a hot adhesive is applied by an adhesive applicator mechanism 30 (Fig. 3) to the bottom of the inner sole 68 near the edge (or periphery thereof) at the toe portion of the shoe upper assembly, typically at the toe, the forepart and the ball area of the inner of sole edge, against which the margin will later be wiped and adhered thereto, that is, in the region between the insole 68 and the margin 72.
  • the applicator mechanism 30, as shown in Fig. 3, includes two extruder sections 31A and 31B having ports 32 through which hot adhesive flows when the mechanism 30 is pressed against the insole bottom.
  • the two extruder sections 31A and 31B are pivotally adjustable about a pivot point 33 between positions wherein the free ends thereof are positioned closer to one another to accommodate larger shoe sizes (see Vornberger patent 4 517 697), to permit application of the adhesive close to the edge of the inner sole.
  • the upper margin 72 is thereafter wiped (by wipers 12 in Fig. 3) against the inner sole. It is the wiping step of lasting toward which this invention is directed, as taken up below, and, in particular, the wiping of the upper margin firmly, uniformly and continuously against and unto the insole throughout the ball region of the upper assembly.
  • the adhesive applicator mechanism 30 includes two extruder extensions 36A and 36B in Fig. 3 pivotally connected (e.g., by a hollow pivot ) at the free ends of 31A and 31B, respectively, to form thereby two articulated extruders.
  • the pivot ends of the extension 36A and 36B move with the extruder sections 31A and 31B to which they are pivotally attached, but the free ends thereof are independently adjustable, as is discussed in the 4 517 697 patent in great detail.
  • Extruder ports 32 permit flow of adhesive onto the inner sole.
  • the particular way by which the adhesive is delivered to the insole is not critical to the present invention.
  • the nozzle mechanisms shown in other patents noted above may be used. The issue here is wiping, as now explalned.
  • the main wiper mechanism 12 noted above (this is a preferred wiper configuration) is operable to wipe the outstanding margin 72 onto the insole 68 at the toe, forepart and regions of the assembly 64.
  • the wiper 12 includes a wiper pair 12A and 12B, in the preferred embodiment, pivotally connected at the toe region, a wiper driver 50 connected to pivot the first wiper pair at the toe region pivot 51 from a location spaced away from the footwear upper assembly toward and onto the insole at the toe region and respective extensions 12A′ and 12B′ of the wiper pair, each wiper of each extension including at its free end an inflatable resinous pad 52A and 52B, respectively, that serves to engage and wipe the margin in the ball region of a footwear upper assembly 64 onto the insole 68; see Fig.
  • the extensions 12A′ and 12B′ are slideably attached to the first wiper pair 12A and 12B along T-channels channels in the respective extension, which receive slides 12A ⁇ and 12B ⁇ to permit positional adjustment longitudinally of the shoe upper according to shoe size, left and right shoe, etc., and, once so positionally adjusted, each extension is held in firm mechanical positioning relative to the first wiper pair 12A and 12B.
  • Each of the resinous pads 52A and 52B is an inflatable pad (see cavity 57A in Fig.
  • the resinous materials of interest here include polyurethane, rubber or the like which can withstand the frictional forces before referred to during initial wiping and drawing of the upper about the ball region of the last 66 and can withstand, as well, the multiple actuations and inflations in repetitive wiping.
  • the pads 52A and 52B each must withstand the friction forces noted above as well as the multiple inflations clearly required here.
  • each pad 52A and 52B must, when inflated, conform precisely to the contour of the ball region of the upper assembly 64, i.e., the pads 52A and 52B must be pliable.
  • a metal base 57A in Fig. 4 receives the molded pad 52A and provides mechanical support therefor.
  • the base 57A rests on the wiper 12A which absorbs the wiping forces and transfers them to the frame of the machine 101.
  • air cylinders 53A and 53B (which may be double-acting air cylinders) serve as pad drivers to drive the respective pad in a toe-ward direction once the wiper pair has effected wiping, thereby to achieve some further wiping or pressing of the margin onto the insole.
  • the blocks 53A and 53B each includes an air cylinder but also includes a servomotor or the like to adjust for shoe length --a structure used for several years in this art. These are known structures in this art.
  • the pads 52A and 52B are inflated to remove wrinkles from the ball region of the margin and provide uniform wiping of the ball region, that is, both sides of the upper assembly 64 are uniformly wiped in the ball region thereof.
  • the label 73 in Fig. 1 designates a heel clamp common in this industry to determine left or right shoe assembly.
  • the foregoing specification has emphasized the preferred embodiment of the invention wherein the main wipers are activated by pivoting action and the inflatable pads are also pivoted and then moved translationally; but there are other shoe lasting machines that employ translational movement of the main wipers (which may be multiple wiping units in an articulated configuration) and pivot at -- or other -- movements of any extensions thereof.
  • the present invention is the inflatable pad aspect.
  • the pads 52A and 52B according to the present teaching are programmably inflated to be so inflated during the wiping operation.
  • the main wipers 12A and 12B are pivotally moved to achieve wiping; the extensions 12A′ and 12B′ move therewith.
  • the inflatable pads 52A and 52B are programmably begun to be sequentially inflated, full inflation occurring, typically, when the main wipers 12A and 12B have completed their wipe and when the extensions 12A′ and 12B′ have been moved toe-ward to press respective pads 52A and 52B onto the ball region on the respective insole.
  • the metal part 59A (and the further metal parts of the pad structure, not shown) rest on the top surface of the respective wiper 12A (and 12B) which provides mechanical support therefor during the ball wiping, as previously indicated.
  • a nylon mesh or the like may be used in the pads 52A and 52B to enhance strength for multiple activations.
  • the invention provides a machine to last the toe region or forward end of a footwear upper assembly, which footwear upper assembly includes a last, an upper draped about the last and an insole at the last bottom, which machine comprises: means to apply an adhesive onto the footwear upper assembly at the toe region or forward end of the assembly near the edge (or periphery) of the insole, said assembly having an outstanding margin: and wiper means operable to wipe the outstanding margin onto the insole at the toe region of the assembly, said means including wipers and extensions thereof positioned and connected at said toe region, a wiper driver connected to pivot the wiper pair at said toe region from a location spaced away from the footwear upper assembly toward and onto the insole at the toe region, and a pair of respective extensions of the wiper pair, each extension including a resinous pad that serves to engage and wipe the margin in the ball region of the footwear upper assembly onto the insole, said extensions being movably attached to the respective wiper of the wiper pair to permit positional adjustment of each extension relative to its associated wiper

Landscapes

  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
EP19900310648 1989-10-31 1990-09-28 Toe, forepart & ball laster Withdrawn EP0426299A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US42953989A 1989-10-31 1989-10-31
US429539 1999-10-28

Publications (2)

Publication Number Publication Date
EP0426299A2 true EP0426299A2 (de) 1991-05-08
EP0426299A3 EP0426299A3 (en) 1992-12-16

Family

ID=23703690

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900310648 Withdrawn EP0426299A3 (en) 1989-10-31 1990-09-28 Toe, forepart & ball laster

Country Status (1)

Country Link
EP (1) EP0426299A3 (de)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB958213A (en) * 1959-07-01 1964-05-21 Ralphs Engineering Company Ltd Improvements in or relating to apparatus for lasting footwear
GB1056735A (en) * 1965-06-02 1967-01-25 Erich Gustav Henkel Lasting machine
US3675260A (en) * 1967-08-30 1972-07-11 Jacob S Kamborian Apparatus for applying cement between a shoe upper and a shoe insole
FR2310102A1 (fr) * 1975-05-08 1976-12-03 Usm Corp Machine automatique a mettre sur forme et a monter les tiges de chaussures
EP0330982A2 (de) * 1988-03-03 1989-09-06 British United Shoe Machinery Limited Maschine zum Zwicken der Seitenteile von Schuhen

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB958213A (en) * 1959-07-01 1964-05-21 Ralphs Engineering Company Ltd Improvements in or relating to apparatus for lasting footwear
GB1056735A (en) * 1965-06-02 1967-01-25 Erich Gustav Henkel Lasting machine
US3675260A (en) * 1967-08-30 1972-07-11 Jacob S Kamborian Apparatus for applying cement between a shoe upper and a shoe insole
FR2310102A1 (fr) * 1975-05-08 1976-12-03 Usm Corp Machine automatique a mettre sur forme et a monter les tiges de chaussures
EP0330982A2 (de) * 1988-03-03 1989-09-06 British United Shoe Machinery Limited Maschine zum Zwicken der Seitenteile von Schuhen

Also Published As

Publication number Publication date
EP0426299A3 (en) 1992-12-16

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