US3506993A - Apparatus for operating on sole and heel units - Google Patents

Apparatus for operating on sole and heel units Download PDF

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Publication number
US3506993A
US3506993A US810657A US3506993DA US3506993A US 3506993 A US3506993 A US 3506993A US 810657 A US810657 A US 810657A US 3506993D A US3506993D A US 3506993DA US 3506993 A US3506993 A US 3506993A
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United States
Prior art keywords
heel
sole
unit
roll
feed roll
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Expired - Lifetime
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US810657A
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English (en)
Inventor
William A Barker
Leslie A Withers
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Emhart Enterprises Corp
USM Corp
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USM Corp
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Publication date
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    • 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
    • A43D25/183—Devices for applying adhesives to shoe parts by nozzles

Definitions

  • Apparatus for performing marginal operations, such as adhesive applying, on sole and heel units having relatively thin sole portions and relatively thick heel portions has work supporting and feeding means comprising a driven upper feed roll, a lower feed roll cooperative therewith in operative disposition for gripping said thin portions, a table for supporting the heel portion of units and means for automatically swinging the lower roll out of the way of the heel portions as they approach the lower roll, the table moving with the lower roll to present a roller thereof beneath the upper roll.
  • This invention relates to improvements in machines adapted to perform an operation on marginal portions of work pieces, and more particularly to improvement in work piece feeding means of such machines.
  • Sole and heel units are now frequently used which are molded in one piece from thermoplastic material, often polyvinyl chloride, and may comprise a sole portion which is of uniform and small thickness and a heel portion which, while it may be undercut, is generally of a uniform thickness substantially greater than that of the sole portion.
  • the sole portion is flimsy and easily deformed, and considerable problems have been encountered in feeding such adhesive composition uniformly around marginal portions of the unit.
  • Feeding means heretofore employed have generally proved unsatisfactory because the means for supporting the sole have interfered with transferring the heel portion past the work station.
  • One of the various objects of the present invention is to provide a machine useful in applying a coating to a marginal portion of a sole and heel unit having a thin flexible sole portion and a thicker heel portion.
  • apparatus for performing an operation progressively along marginal portions of the sole and heel units comprising means operative at an operating station for performing the operation and means for feeding said units to transfer marginal portions thereof progressively past the operating stations.
  • the feeding means comprise a driven upper feed roll cooperative therewith in operative disposition for gripping said thin portion, and a table providing a surface for supporting the heel portion.
  • the lower feed roll is mounted for swinging out of operative disposition to permit operation on the heel portion.
  • the swinging of the lower feed roll is effected by power means in response to the operation of means for sensing the approach of the heel portion to the performing means.
  • a roller may be positioned beneath the upper feed roll to facilitate feeding the heel portion. Conveniently the roller is carried by the table and extends through an aperture therein, the table swinging with the lower feed roll.
  • the invention is illustrated as embodied in apparatus for use in applying adhesive composition in molten form to sole and heel units.
  • the apparatus comprises a head frame to which is fixed a bearing bracket in which is mounted a shaft bearing an upper feed roll at an outer end portion. Pivoted for rocking movement about a horizontal axis is a lever which supports, pivoted for swinging movement about a vertical axis, a roll supporting bracket carrying a bearing supporting a composite shaft comprisinga flexible joint. At its outer end portion this shaft carries a lower feed roll which in operative position is opposite the upper feed roll, at its inner end portion it is connected by gear wheels to the shaft of the upper feed roll, and thence to an electric motor which drives the rolls in conjunction with each other.
  • an operator utilizes a treadle mechanism to move the lower feed roll upwards so that marginal portions of a sole portion of a sole and heel unit are gripped between the feed rolls and fed past a nozzle of an adhesive composition applying device, while the heel portion of the unit rests on a table which is supported, through a parallel linkage providing for vertical adjustment of the table, on the roll supporting bracket.
  • a guide block positioned adjacent the feed rolls engages an edge surface of the sole portion of the unit and assists in its feeding through the feed rolls.
  • the lower feed roll is arranged automatically to be moved to an out-or-the-way inoperative position when the heel portion of a unit is to be operated upon.
  • the margin extending around the sole portion is operated on first in the illustrative machine.
  • the heel portion of the sole and heel unit engages and moves a trigger connected with a microswitch. Movement of the trigger by the heel portion operates the microswitch to cause an electrically operated timer valve to direct air under pressure to an air motor which then acts to swing the roll supporting bracket about its vertical pivot on the lever to carry the lower feed roll sideways to the out-of-the-way position.
  • the flexible joint in the composite shaft for driving the lower feed roll allows it to move to the out-of-the-way position.
  • Movement of the table supporting the heel portion of the sole and heel unit takes place with movement of the bracket carrying the lower feed roll, and movement of the lower feed roll to the out-of-the-way position brings a freely rotatable roller mounted beneath the table and extending through an aperture therein opposite the upper feed roll.
  • the heel portion, supported on the freely rotatable roller is then fed past the nozzle by the upper feed roll.
  • adhesive composition has been applied around the whole of the periphery of the unit, the treadle mechanism is released and the table and lower feed roll allowed to drop downwardly, the lower feed roll being returned to its operative position opposite the upper feed roll in due course under the control of the electrically operated timer valve, to return the apparatus to a condition to operate on the next sole and heel unit.
  • FIG. 1 is a side elevation partly in section and with some parts broken away, of apparatus embodying the present invention.
  • the toe end of a sole and heel unit is shown gripped between an upper and lower feed roll;
  • FIG. 2 is a plan view of a portion of the apparatus shown in FIG. 1. The view is partly in section and with some parts broken away, the upper feed roll and associated parts being removed for clarity. Shown in chain line is a sole and heel unit in position for the commencement of an adhesive composition applying operation;
  • FIG. 3 is a plan view, partly in section and with some parts broken away, of the apparatus shown in FIG. 1. The parts are shown in positions assumed when the heel portion of the sole and heel unit is being operated upon; and
  • FIG. 4 is a view in perspective of a modification.
  • the illustrative apparatus is adapted for use in applying thermoplastic adhesive composition in molten form to sole units. It comprises a column 7 supporting a head casting in which is supported a drive shaft 3 adapted to be driven by an electric motor (not shown). Clutch tooth 9 on a boss 8 fixed to the shaft 3 are adapted to engage clutch teeth 11 of a clutch gear wheel 10 which is freely mounted on the shaft 3, and which can be moved axially of the shaft 3 to bring the teeth 11 into and out of engagement with the teeth 9 by a clutch lever 2.
  • the gear wheel 10 is adapted to mesh with a gear wheel 12 fixed on a shaft 13 mounted in a bearing bracket 15 fixed to the head casting 5.
  • An upper feed roll 17 is fixed to an outer end portion of the shaft 13.
  • a gear wheel 19 Fixed to the shaft 13 adjacent to the gear wheel 12 is a gear wheel 19 which meshes with a gear wheel 21 fixed to an inner portion 23 of a composite shaft 24 comprising the inner portion 23, and an outer portion 31 linked by a pivotal joint 27.
  • a lower feed roll 25 is fixed on the outer portion 31 of the shaft 24 and a feed guide member 26 is arranged to extend first below an upper portion of the surface of the roll 25 past the outer face of the roll 25.
  • the outer end portion 31 is rotatably mounted in a bracket 33 which .is mounted for swinging movement about a vertical pivot shaft 37 in a lever 35: the inner shaft portion 23 is journaledin this lever 35.
  • lever 35 may be moved upwardly (into the position shown in FIG. 1) about pivot pins 36 secured in lugs 38 of the head casting 5 to enable a sole portion of a shoe sole and heel unit to be operated on by the machine to be gripped between the feed rolls 17 and 25.
  • a treadle rod 40 carries a stop 42 between which lugs 44 on a rearward end portion of the lever 35 is provided a spring 46.
  • an operator utilizes a treadle mechanism (not shown) to hold marginal portions of a sole portion of a sole and heel unit gripped between the feed rolls 17, 25, the spring 46 providing yielding means which allows the lever 35, and thus the lower feed roll 25, to yield about the pivot pins 36 to accommodate variations in substance of the sole portion of the sole and heel unit.
  • the position of the pivot pins 36 is such that the gear wheels 19 and 21 remain in mesh to drive the lower feed roll 25 when it is in a lowered position.
  • a heel portion of a sole and heel unit rests on a table 39 mounted in the machine for adjustment to accommodate units of varying heel heights.
  • the table 39 is fixed on a table support 41 pivotally mounted by pins 43, on outer end portions of upper and lower pairs of parallel links 45 having opposite end portions pivotally mounted on the bracket 33 by means of pins 47.
  • the table 39 is positioned heightwise with respect to the lower feed roll 25 by means of a projection 49 which rests on a stop screw 51 threaded into a web 50 secured between the lower pair of parallel links 45. Heightwise adjustment of the stop screw 51 in the web determines the lowermost position of the table 39 relative to the lower feed roll 25.
  • the operator positions the work piece so as to grip the sole portion of the unit between the feed rolls 17 and 25 adjacent the heel breast position at one side of the unit so that when the feed rolls are driven progressively to feed marginal portions of the unit past an adhesive composition applying nozzle 53 of an adhesive applying device of the machine, adhesive composition being first applied to marginal portions of the sole portions of the unit commencing at the heel breast position and progressing around the sole portion until the heel breast is reached at the opposite side of the unit.
  • the adhesive applying device is pivotally mounted about a horizontal axis (not shown) and the position of the nozzle 53 relative to the feed rolls may be adjusted by adjustment of a stop screw 54 in a bracket 56 secured to the bracket 15 against which the adhesive applying device rest-s under gravity. Operation of the treadle mechanism effects gripping of the work piece by raising the lower feed roll 25, and thus the table 39 which is carried by the bracket 33 on the lever 35, and initiates the delivery of molten adhesive composition from the nozzle 53.
  • the adhesive applying device is of conventional construction for applying hot melt adhesive compositions.
  • the feed rolls 17 and 25 are normally constantly rotated for work pieces to be introduced successively to the machine, a sole and heel unit gripped between the feed rolls being fed by them in the direction of the arrows in FIGS. 2 and 3.
  • a sole and heel unit gripped between the feed rolls being fed by them in the direction of the arrows in FIGS. 2 and 3.
  • the sole and heat unit is fed by means of the feed rolls it is guided in continuously changing curved paths to present successive marginal portions of the top surface of the unit beneath the nozzle 53.
  • the illustrative machine is provided with a guide block 55 which presents an S shaped curved guide surface 57 to the edge surface of the sole and heel unit being operated on.
  • the machine is constructed and arranged to operate on units having comparatively thin sole portions, often tapering to a very thin substance in the waist and the fixed guide block 55 provides a maximum of edge depth for engagement with the edges of the sole and heel units operated on.
  • a groove cut in the. block provides a clearance for the top feed roll 17.
  • the block 55 suitably is made of plastic filled sintered bronze to resist wear and provide minimum resistance to rubbing of the edge of the work piece against it.
  • the guide block 55 is mounted on an arm 63 pivotally mounted by means of a pin 65 '(FIG.
  • the position of the guide block 55 on the arms 63 may be adjusted relatively to the nozzle 53 in directions to vary the distance from the edge of the different work pieces operated on in the machine at which adhesive composition is applied.
  • a locking screw 77 threaded into the fixed bracket 75 may be tightened onto the eccentric portion 73 of the adjusting pin 71 to lock the carrier 67 in adjusted position.
  • the arm 63 rests on an upper surface of the bracket 33 and the guide means 55 follows heightwise movement of the lower feed roll 25
  • a leaf spring 68 holds the arm 63, when in position shown in FIG. 2, down onto the bracket 33.
  • adhesive composition is first applied progressively to marginal portions of the sole portion of a sole and a heel unit presented to the machine, commencing at the heel breast position on one side of the unit and progressing around the toe end of the unit to the heel breast position at the opposite side of the unit.
  • the unit continues to be fed past the nozzle 53, guided by means of the guide block 55 for adhesive composition to be applied to marginal portions of the unit extending around the heel portion thereof from the last mentioned heel breast position to the heel breast position at which the adhesive appling operation on the sole and heel unit commenced.
  • the lower feed roll 25 is arranged automatically to be moved to an out-of-the-way inoperative position when the heel portion of a unit is to be operated on.
  • the lever 35 comprises a sideways extending lug 79. Pivotally mounted on the lug 79 by means of a pin 81 is a motor 83 having a piston rod 85 pivotally connected by means of a pin 87 to the bracket 33. Normally air under pressure in the air motor 83 holds the piston rod 85 in a retracted position and the bracket 33 is positioned to support the shaft portion 31 in alignment with the shaft portion 23 and the lower feed roll 25 disposed directly beneath the upper feed roll 17 for co-operation therewith in a work piece feeding action. When the heel portion of a sole and heel unit is operated on in the machine the direction of air under pressure to the. air motor 83 is reversed to urge the piston rod 85 to an extended position (FIG.
  • the lower feed roll is automatically swung to its out-of-the-way position when application of adhesive to the sole portion of the unit, from heel breast line to heel breast line, has been completed.
  • a trigger 89 is positioned adjacent the lower feed roll 25, to be contacted by the heel of the unit as the heel approaches the nozzle 53.
  • the trigger 89 is a cranked member with a curved outer end portion extending across the peripheral surface of the roll 25 and an incurved portion secured to a clamp 91 secured to an actuating shaft 92 of a microswitch 93.
  • the microswitch 93 is secured on a slide 94 which is mounted between arms of the bracket 33 for up and down sliding movement, such movement being obtained by adjustment of a screw 95 passing through a boss 96 secured to the bracket 33 and into a threaded hole provided in an inward extension 98 of the slide 94.
  • the microswitch 93 incorporates a spring which normally serves to hold the trigger 89 outwards away from the roll 25, but slight inward movement of the trigger 89 serves to rotate the shaft 92 to operate the microswitch to cause an electrically operated timer valve '(not shown) to open to supply air to the air motor 83. This causes the motor to be operated to swing the bracket 33, together with the lever feed roll 25 and the table 39, clockwise, vie-wing FIGS.
  • the table 39 is adjusted to the appropriate height for the heel of the unit to be operated upon by adjustment of the stop screw 51, and the trigger 89 is adjusted conveniently for the thickness of the sole portion of the unit, by adjustment of the screw 95.
  • operation of the machine may be more convenient if the heel is supported in a metal cradle 101 as shown.
  • the sole portion of the unit is then inserted between the feed rolls 17 and 25 and the treadle mechanism operated to bring the roll 25 into contact with the sole portion. Operation of the machine is started adjacent a heel breast of the unit, in the position shown in FIG. 2.
  • the sole portion of the unit is then fed progressively past the nozzle 53, which applies adhesive composition to the margin of the unit, the edge of the unit running, as previously described, in contact with the guide block 55.
  • adhesive composition has been applied around the edge of the sole unit to the heel breast at the other side of the sole unit, the heel, or the cradle 101 if in use, contacts the trigger 89, thus to cause the lower feed roll 25 to move away from its operative position and to bring the roller 97 into position opposite the upper feed roll 17.
  • the heel portion, extending between the roll 17 and roller 97 is fed past the nozzle 53 by operation of the roll 17, and when adhesive composition has been applied around the whole of the periphery of the unit, the treadle mechanism is released and the table 39 and lower roll 25 allowed to drop downwardly, the roll 25 being returned to its operative position opposite the roll 17 in due course, as previously described, to leave the machine in a condition to operate on the next sole and heel unit.
  • FIG. 4 is shown a modification which may be utilized in certain circumstances and is particularly useful when operating on thin or flimsy shoes.
  • the arm 63 and parts attached to it is replaced by an arm 104 whlch is pivoted by the pins 65 between the downwardly extending arms of the bracket 67.
  • the arm 104 supports a bracket 106 to which is fixed a guide block 108 of Teflon filled sintered bronze, a low friction material.
  • the block 108 has a cut away portion 109 which provides clearance for the feed roll 17.
  • Also fixed to the arm 104 is a plate 110 on which is supported a freely rotatable roll 112 and a guide member 114.
  • a pin 116 secured in the plate 110 passes through a hole in a bracket 118 secured to the bearing bracket 15, a spring 120 is positioned around the pin 116 and acts between the bracket 118 and the plate 110 to urge the plate 110, and thus the roll 112, guide member 114 and block 108 downwardly into a position determined by a collar 122 on the rod 116.
  • the edge of a sole portion of a sole unit is guided by engagement with the guide block 108 and the roll 112, and passes between the plate 110 and the guide member 114.
  • This arrangement provides for a somewhat better control of movement of the sole portion through the illustrative machine.
  • Apparatus for performing an operation on marginal portions of a sole and heel unit having a thin sole portion and a thicker heel portion comprising means at a Work station for performing the operation on said unit, a driven upper feed roll, a driven lower feed roll mounted for movement between an operation position cooperative with said upper roll for gripping said thin portion for moving the margin of said unit progressively past said work station and an inoperative position in which said roll is clear of the heel portion during its passage beneath said upper roll, a table having a surface for supporting the heel portion of the unit during operation by said performing means, and means for moving said lower roll to the inoperative position for operation by the performing means on the heel portion.

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  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Coating Apparatus (AREA)
US810657A 1968-04-11 1969-03-26 Apparatus for operating on sole and heel units Expired - Lifetime US3506993A (en)

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GB1745168 1968-04-11

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US3506993A true US3506993A (en) 1970-04-21

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DE (1) DE1916137A1 (de)
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110148409A1 (en) * 2009-12-21 2011-06-23 Nxp B.V. System and method for measuring the shape of an object using a magnetic induction radio sensor

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2760463A (en) * 1953-07-21 1956-08-28 Charles J Mccready Adhesive applying machine for work pieces having an irregular contour
US2994893A (en) * 1960-03-16 1961-08-08 United Shoe Machinery Corp Machines for roughing outsoles
US3119133A (en) * 1962-04-27 1964-01-28 Compo Shoe Machinery Corp Sole roughing machinery

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2760463A (en) * 1953-07-21 1956-08-28 Charles J Mccready Adhesive applying machine for work pieces having an irregular contour
US2994893A (en) * 1960-03-16 1961-08-08 United Shoe Machinery Corp Machines for roughing outsoles
US3119133A (en) * 1962-04-27 1964-01-28 Compo Shoe Machinery Corp Sole roughing machinery

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110148409A1 (en) * 2009-12-21 2011-06-23 Nxp B.V. System and method for measuring the shape of an object using a magnetic induction radio sensor
US8542017B2 (en) * 2009-12-21 2013-09-24 Nxp B.V. System and method for measuring the shape of an organ of a patient using a magnetic induction radio sensor integrated in a stretchable strap

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FR2006060A1 (de) 1969-12-19
DE1916137A1 (de) 1969-10-23

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