US3428981A - Method and apparatus for manufacturing shoes - Google Patents

Method and apparatus for manufacturing shoes Download PDF

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Publication number
US3428981A
US3428981A US545675A US3428981DA US3428981A US 3428981 A US3428981 A US 3428981A US 545675 A US545675 A US 545675A US 3428981D A US3428981D A US 3428981DA US 3428981 A US3428981 A US 3428981A
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United States
Prior art keywords
mould
press head
shaft
suction
upper leather
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Expired - Lifetime
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US545675A
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English (en)
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Richard Hoffmann
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Individual
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Individual
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    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43D—MACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR
    • A43D11/00—Machines for preliminary treatment or assembling of upper-parts, counters, or insoles on their lasts preparatory to the pulling-over or lasting operations; Applying or removing protective coverings
    • A43D11/01—Machines for applying reinforcement or ornamental straps to the margins of uppers
    • A43D11/02—Machines for applying reinforcement or ornamental straps to the margins of uppers to the margins thereof
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43D—MACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR
    • A43D11/00—Machines for preliminary treatment or assembling of upper-parts, counters, or insoles on their lasts preparatory to the pulling-over or lasting operations; Applying or removing protective coverings
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/17—Surface bonding means and/or assemblymeans with work feeding or handling means
    • Y10T156/1702—For plural parts or plural areas of single part
    • Y10T156/1744—Means bringing discrete articles into assembled relationship
    • Y10T156/1768—Means simultaneously conveying plural articles from a single source and serially presenting them to an assembly station

Definitions

  • Front parts of shoes of the above described kind are manufactured as is well known, in such a manner that the toe or thermoplastic front caps are connected to the upper leather shaft portion by laying and smoothing them there on, the lining leather being applied by adhesive and pressure, that is to say, the application of adhesive to the lining leather and pressing the latter on to the shaft.
  • This is effected in such a manner that the cap is first applied and then the lining leather, coated with adhesive, is placed in position and pressed on.
  • thermoplastic toe or front caps are subjected to heat treatment whilst being smoothed or pressed on to the upper leather shaft, and some of the heat is conducted to or into the upper leather shaft portion disposed below it, skilled staff are required for this work in order to reduce wastage as far as possible. This wastage occurs mainly because the thermoplastic toe caps are either insufliciently heated and therefore do not properly adhere to the upper leather shaft, or the upper leather shaft is affected by excessive heat action.
  • a method of manufacturing a multi-layer shoe part such as a shoe front having a toe cap provided on an upper leather shaft portion, and lining leather pasted thereover, characterised by the feature that an upper leather shaft portion, with its inner surface facing upwardly, is disposed by hand in a concave mould and undisplaceably secured in its position therein by means of a vacuum, said mould then being moved to a position under a heatable press head adapted to inter-lock with the mould, whereupon, a toe cap is separated from the prepared store of stacked toecaps by means of a suction holder and is brought between the concave mould and the press head in such a manner that the toe cap, at least partly in contact therewith, is pressed away from the suction holder and moved on to the upturned inner surface of the upper leather shaft portion and pressed thereon by the heated press head, the latter and the concave mould then being returned to their respective starting positions whereupon an adhesive is applied to the upper leather shaft portion and
  • All the pressing operations are preferably effected with the application of heat.
  • the press-head is heated electrically in the manner of a smoothing iron.
  • the adhesive is sprayed on to the inside of the shaft upper leather portion by means of a spray gun.
  • thermoplastic toe cap on to the inside of the upper leather of the shaft can be controlled so that the heat given off by the presshead acts on the latter only briefly sufficiently for a good and reliable connection of the toe cap with the shaft upper leather.
  • thermoplastic toe cap immediately after it is brought between the concave mould and the hot press-head, is preheated for the pasting operation, at least partly in contact with the press-head, during the relative movement to the concave mould and until the pressing on or into the inside of the upper leather shaft portion, so that no further heating is necessary.
  • the pressure can therefore be very brief so that it is possible to provide even comparatively thin upper leather shaft parts with thermoplastic caps without danger of damaging them by excessive heat action.
  • the apparatus for carrying out the method of the present invention is characterised by a concave mould, open at the top, and displaceable in the direction of its longitudinal axis, a press head vertically displaceable substantially perpendicularly to the said axis and adapted to interlock with the concave part of the mould, and a suction holder which is both axially displaceable and vertically displaceable perpendicularly to the said axis, these parts being displaceable relative to each other in such a manner that both the mould and the suction holder can co-operate with the press head in one of their terminal positions.
  • FIG. 1 is a schematic view of the apparatus
  • FIG. 2 is a perspective view of a concave mould
  • FIG. 3 is a plan view of the mould shown in FIG. 2;
  • FIG. 4 is a perspective view in cross section of a press head
  • FIG. 5 is a front view of the press head show in FIG. 4;
  • FIG. 6 is a front view of a suction holder
  • FIG. 7 is a perspective view of a coupling
  • FIG. 8 is a plan of the coupling shown in FIG. 7;
  • FIG. 9 shows individual layer of a toe cap before they are combined.
  • the apparatus comprises a table-like base on which a frame-like construction 2 is arranged, the individual parts of which are welded together.
  • a concave mould 3 which is open at the top, a press head 4 and a suction holder 5 are provided on the frame-like construction.
  • the mould 3, the press head 4 and the suction holder 5 are all arranged parallel to a common longitudinal axis X-X in a plane perpendicular thereto, the mould 3 being displaceable along this axis, the press head 4 displaceable substantially perpendicularly thereto and the suction holder 5 displaceable both along the axis XX and also displaceable substantially perpendicularly thereto.
  • the mould 3 For purposes of displacement the mould 3 is provided with slides 6 on both sides of its underside, running on rails 8 by means of rollers 7.
  • each of these two members is connected indirectly and directly to a piston rod 9 and 10 respectively controlled pneumatically or hydraulically by cylinders 11 and 12 respectively associated therewith.
  • the suction holder 5 is connected to a cylinder 14 by a piston rod 13 for displacement in the axial direction X-X.
  • An adhesive applicator device 15 is provided above the mould 3 in the end position A of said mould.
  • a centering pin 16 (FIG. 2 and 3) is provided on a projecting end portion 17 of the mould 3 by means of which, as shown in FIG. 3, an upper leather shaft part 18 having a notch 18a provided for the purpose on its front part, can be centered on the inside of the mould.
  • suction bores 19 which are provided for retaining by vacuum the inserted and suitably centered shaft part 18, are clearly seen.
  • a switch pin 20 is secured for operating an automatic electrical arrangement to be described hereinafter, which switch pin 20 co-operates with a switch 22 mounted on a stationary part of the apparatus, for example a support 21 of the rails 8, in one of the two end positions of the mould 3.
  • the press head 4 which interlocks with the inside of the concave mould 3, has at one end a bore 23, in a stationary annular portion 24 of which a perforation and a space 25 and 25a respectively are provided in line with each other at the bottom and top respectively, see FIGS. 4 and 5.
  • a bearing displaceable perpendicularly to the axis XX by means of a piston rod 10, in the present case, a spherical bushing 26, and a coupling displaceable in the axial direction XX by means of a piston rod 13.
  • the suction holder 5 consists of a shaft 28 in the spherical bushing 26 and displaceable therein in the axial direction XX, and a suction beak 29 mounted on the underside of the shaft.
  • the bushing 26 has on its lower side a continuous longitudinal slot 30 (FIG. 6).
  • a magazine 31 is provided below the suction beak 29 for work pieces such as thermoplastic toe caps 32 to be applied, for example, to the upper leather shaft portion 18.
  • a coupling 27 is provided, by means of which the shaft 28 is connected to the piston rod 13.
  • the coupling 27, which is shown in greater detail in FIGS. 7 and 8, has a continuous longitudinal slot 33 in the side facing shaft 28.
  • the shaft 28 of the suction holder 5 has on its free end a ball pin 34 by which the shaft 28 is journalled to slide in the longitudinal slot 33.
  • the mould 3 may also be moved automatically by a suitable arrangement of an additional cylinder, whilst, however, this control should also be capable of being switched over to manual operation, if necessary, in order to use the apparatus as universally as possible for appropriate work.
  • the mode of operation of the apparatus is as follows:
  • the upper leather shaft part 18 is disposed in the concave interior of the mould 3 and brought into the appropriate position by means of the centering pin 16 and the notch 18a provided on the upper leather shaft part 18 and firmly secured therein by means of suction applied by the suction bores 19.
  • the mould 3 is then displaced from its one end position A in the direction of the arrow A into its other end position under the press head 4 until the switch pin 20 makes contact with the switch 22.
  • the switch 22 By switching of the switch 22 the electrical arrangement of the apparatus is operated, whereby the valves 35a-35f of the individual cylinders 11, 12 and 14 are controlled as follows:
  • Valve 35a is opened to admit liquid or gaseous medium whereby the piston rod 10 and, together therewith, the suction holder 5, are moved downwardly in the direction of the arrow B. Simultaneously air is sucked in by the suction beak 29 which, as soon as it becomes disposed on a thermoplastic toe cap 32 in the magazine 31, secures one of them.
  • the valve 35a is closed by the resultant interruption of the flow of suction air and the valve 3512 opened and the piston with the suction holder 5 and the suctionheld toe cap 32 are raised.
  • valve 35c When their starting position is reached, the valve 35c is opened and the coupling 27, the shaft 28, journalled to be displaceable in the spherical bushing 26, with the suction beak 29 and the toe cap 32 held thereby, are displaced by the piston rod 13 in the direction of the arrow C towards the press head 4 until the suction beak 29 of the portion of the shaft 28 carrying said beak are partly moved into the press head 4.
  • the bore 23 and the spaces 25 and 25a are provided for this purpose, the former accommodating part of the shaft 28 and the latter the suction beak 29.
  • the suction beak 29, whose main object is to feed the toe caps 32 to the upper leather shaft part 18 in a suitable position, is at an angle for the most part in the direction of the arrow C, so that, when the suction holder 5 is moved into the mould 3, the toe cap 32 held by the suction beak is held by the latter over the front part of the upper leather shaft 18, namely at the place where it is to be mounted.
  • the annular portion 24 of the bore 23 has a width equal to the height of the beak 29 so that the gap 25 just accommodates the beak 29 with the cap 32 being disposed with its upwardly turned side against the lower surface of the heated press head 4.
  • the valve 35d is actuated, the press head 4 moves downwardly in the direction of the arrow D to- Wards the mould 3 which is open at the top, the thermo plastic toe cap 32 being pressed off the stationary suction holder 5 or beak 29 and pressed by the press head 4 on to the part of the upper leather shaft located in the mould 3 and the toe cap, which has now been considerably heated during its contact with the hot press head 4, is simultaneously cemented to the inner surface of the upper leather shaft portion.
  • the bore 3 is either designed so that a relative movement perpendicularly to the axis of the suction holder within the press head 4 is possible or, as in the present embodiment, the press head member is provided with the space 25a at the top which is of such a width that the press head 4 can be moved relatively to the suction holder 5 without coming into contact therewith.
  • the mould 3, with the upper leather shaft member having the toe cap cemented thereto, is returned to its original position under the adhesive applicator device 15, in the present case a spray gun, and provided with adhesive by the latter.
  • a lining leather 36 (FIG. 9) is placed on the upper leather shaft portion 18 so as to completely overlie the upper leather shaft portion 18, the mould 3 then being moved under the press head 4 again.
  • the switch 22 is then actuated a second time by the switch pin and causes, as a result of the electric circuit, only the valve 35d to open, whereby the press head 4 is again moved downwardly to the mould 3 and the lining leather laid on the upper leather shaft portion is pressed thereon, preferably with the application of heat.
  • valve 35d closes and valve 55 opens, whereby the press head 4 is again raised.
  • the now completed shoe front consisting of the upper leather shaft portion 18, the toe cap 32 applied thereto and lining leather 36 pasted thereover, can be removed.
  • the electrical part of the apparatus can be operated in such a manner that the control of the valves 3541-35 may be effected in any desired sequence by means of a stage switch (not shown) having several operable switch positions, for Examples I-lV.
  • a stage switch (not shown) having several operable switch positions, for Examples I-lV.
  • stage IV it is also possible, in stage IV, to separate the circuit for individual movement operations or for a plurality of movement operations of individual or several parts, from the automatically controlled programme and to transfer them to another device operated mechanically by hand or foot actuation as desired, for example to a hand-operated or foot-operated lever or the like, so that the use of the apparatus is much more versatile.
  • multi-layer parts which are intended to be flat for example, can be manufactured by interchanging suitably prefabricated moulds and shape-engaging associated press heads.
  • the tool smoothing on the toe caps in the present case the press head, can be heated much more highly compared with that used in the conventional method of manufacture, since, due to the above-mentioned pre-heating of the toe cap, the latter need be pressed only very briefly on to the upper leather shaft portion. This means that the adhesion is extremely durable and, in addition, the upper leather shaft cannot be damaged by the action of heat.
  • the apparatus can also be used for the application of non-thermoplastic toe caps, for which purpose it is necessary, however, for the upper leather shaft located in the mould, before moving out under the press head, to be provided with adhesive on the front surface to be laid on the toe cap.
  • the press head 4 is provided with bores 37 and terminal contacts 38 for electrical heating cartridges.
  • the supply of current for this purpose is effected by way of a connecting cable (not shown) which is connected to a current source.
  • Apparatus for assembly of shoe uppers, toe caps and linings comprising:
  • conveyor means supplying heated toe caps to said mould, said means including suction support for said caps;
  • (e) means applying and pressing lining material to said adhesive covered workpiece.

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  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
US545675A 1965-05-07 1966-04-27 Method and apparatus for manufacturing shoes Expired - Lifetime US3428981A (en)

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Application Number Priority Date Filing Date Title
DEB0081820 1965-05-07

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US3428981A true US3428981A (en) 1969-02-25

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US (1) US3428981A (el)
DE (1) DE1485899A1 (el)
FR (1) FR1470043A (el)
GB (1) GB1150271A (el)
NL (1) NL6516488A (el)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008015098A1 (en) * 2006-08-02 2008-02-07 Nextec S.R.L. Process and device for waterproofing semimanufactured products of footwear, gloves, clothing items and accessories, as well as products obtained with this process or device
CN104886877A (zh) * 2015-05-22 2015-09-09 天津贝迪安全设备有限公司 一种制鞋机鞋底模升降器

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1630788A (en) * 1923-10-22 1927-05-31 John J Daly Box-toe shoe
US1644938A (en) * 1920-03-11 1927-10-11 United Shoe Machinery Corp Shoe-tip machine
US1684052A (en) * 1924-03-13 1928-09-11 Harry H Beckwith Apparatus for assembling stiffeners in shoe uppers
US1979461A (en) * 1932-03-16 1934-11-06 Carbide & Carbon Chem Corp Shoe structure
US1983622A (en) * 1931-06-26 1934-12-11 Arden Box Toe Company Shoe stiffener and method of making the same
US2107725A (en) * 1933-11-11 1938-02-08 Int Shoe Co Boot or shoe and method of making the same
US2110249A (en) * 1935-11-05 1938-03-08 Edwin P Walker Manufacture of shoes
US2150279A (en) * 1937-05-05 1939-03-14 United Shoe Machinery Corp Stiffener placing machine
GB750993A (en) * 1954-02-25 1956-06-20 Eustace Freck Halliwell Improvements in and relating to slip-lasted shoes

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1644938A (en) * 1920-03-11 1927-10-11 United Shoe Machinery Corp Shoe-tip machine
US1630788A (en) * 1923-10-22 1927-05-31 John J Daly Box-toe shoe
US1684052A (en) * 1924-03-13 1928-09-11 Harry H Beckwith Apparatus for assembling stiffeners in shoe uppers
US1983622A (en) * 1931-06-26 1934-12-11 Arden Box Toe Company Shoe stiffener and method of making the same
US1979461A (en) * 1932-03-16 1934-11-06 Carbide & Carbon Chem Corp Shoe structure
US2107725A (en) * 1933-11-11 1938-02-08 Int Shoe Co Boot or shoe and method of making the same
US2110249A (en) * 1935-11-05 1938-03-08 Edwin P Walker Manufacture of shoes
US2150279A (en) * 1937-05-05 1939-03-14 United Shoe Machinery Corp Stiffener placing machine
GB750993A (en) * 1954-02-25 1956-06-20 Eustace Freck Halliwell Improvements in and relating to slip-lasted shoes

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008015098A1 (en) * 2006-08-02 2008-02-07 Nextec S.R.L. Process and device for waterproofing semimanufactured products of footwear, gloves, clothing items and accessories, as well as products obtained with this process or device
CN101500445B (zh) * 2006-08-02 2012-05-09 Outdry技术有限公司 用于使鞋子、手套和衣服及其附件的半制成品防水的方法和装置、以及由该方法或装置获得的产品
CN104886877A (zh) * 2015-05-22 2015-09-09 天津贝迪安全设备有限公司 一种制鞋机鞋底模升降器

Also Published As

Publication number Publication date
FR1470043A (fr) 1967-02-17
GB1150271A (en) 1969-04-30
DE1485899A1 (de) 1969-06-04
NL6516488A (el) 1966-11-08

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