EP0050429A2 - Machine pour monter les parties marginales d'empeignes - Google Patents
Machine pour monter les parties marginales d'empeignes Download PDFInfo
- Publication number
- EP0050429A2 EP0050429A2 EP81304527A EP81304527A EP0050429A2 EP 0050429 A2 EP0050429 A2 EP 0050429A2 EP 81304527 A EP81304527 A EP 81304527A EP 81304527 A EP81304527 A EP 81304527A EP 0050429 A2 EP0050429 A2 EP 0050429A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- lasting
- clamp member
- last
- band portion
- shoe
- 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
Links
Images
Classifications
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43D—MACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR
- A43D21/00—Lasting machines
- A43D21/003—Lasting machines with lasting strings, stretching straps or the like, for forming the shank portions of shoes
Definitions
- shoe where used herein is used generically as indicating articles of outer footwear generally, including such articles in the course of manufacture.
- Machines for lasting side portions of shoe uppers comprising a support for a shoe last on which an upper, the side portions of which are to be lasted, and an insole are positioned, and two side lasting assemblies arranged so as to act on opposite side portions of an upper positioned on a last supported by said support, wherein each side lasting assembly comprises clamping means, comprising at least one clamp member, movable towards the last support to cause a side portion of the upper to be held against the last, on which it is positioned and which is supported by the last support, at a locality spaced from the feather line thereof, lasting element means, comprising a plurality of lasting elements arranged side-by-side and movable inwardly towards the last support so as to cause lasting marginal portions of the side portion of the upper to be wiped over corresponding marginal portions of the insole and be pressed thereagainst, and lasting band means comprising at least one upper-engaging band portion of flexible sheet material arranged to be interposed between the shoe upper on the one hand and the lasting elements and the clamp member(
- each side lasting assembly comprises a single lasting band which is supported at its upper and lower edges, the arrangement being such that, as the lasting band is moved inwardly towards the last support, a portion thereof intermediate its upper and lower edges first engages the upper in the waist region, continued movement thereafter causing the upper to be deformed in the direction of both the top line and the feather line.
- the inward movement of each assembly is limited by a presser pad between which and the upper the lasting band is interposed, which pad also assists in holding the upper in position against the last during the lasting operation.
- each device in turn comprising a lasting element in the form of a wiping finger, a strap of flexible material one end of which is secured to the wiping finger, and the other end also being secured to a portion of the assembly, and a clamp pad between which and the upper the strap is interposed.
- each device operates independently of the others, the arrangement being such that each assembly is moved bodily towards the shoe and the presser pads are brought into pressing engagement with the band against the upper, thus to clamp the upper against the last at a locality closely adjacent the feather line.
- the pressure applied by the pads is increased as the wipers move inwardly to wipe lasting marginal portions of the upper against corresponding marginal portions of the insole and press them thereagainst.
- the wiping fingers are cammed down from an out-of-the-way position to lay the lasting marginal portions of the upper over corresponding marginal portions of the insole and press them thereagainst.
- Patent Specification No.1339835 a machine is described having two side lasting assemblies, each comprising a plurality of lasting elements and a plurality of bands, but in this case no clamping pads are provided, the upper merely being engaged by the bands which are drawn over the insole edge, together with lasting marginal portions of the upper, during the in-wiping movement of the lasting elements.
- the use of wiping fingers or similar lasting elements is advantageous in ensuring a sharp feather edge on the finished shoe and also an adequate bedding down of the lasting marginal portions on to corresponding marginal portions of the insole, so that the mere application of an updrafting force does not in itself necessary provide a good result in the finished shoe.
- clamp pads be provided so that a controlled drafting force can be applied to the upper, thus ensuring that any displacement of the upper does not lead to its being badly positioned on the last prior to the waist lasting operation.
- the lasting elements are utilised to apply a controlled drafting force to the upper through the upper-engaging band portion(s), the control being specifically achieved by the action of the clamp member(s) acting on the band portion(s).
- the upper-engaging surface of the or each upper-engaging band portion is such as to cause the upper to be frictionally engaged thereby, thus to apply a drafting force to the upper as aforesaid and at least one of the opposite surface of the or each band portion and the surface of the or each clamp member engaging such opposite surface is a low-friction surface.
- the aforementioned surface of the or each clamp member may be of polytetrafluoroethylene.
- the or each upper-engaging band portion may be made of a laminated sheet material having a first layer which comprises the upper-engaging surface and which provides sufficient friction to apply a drafting force to the upper engaged thereby, and a second layer which comprises a low-friction surface which is engaged by the clamping member(s).
- the sheet material from which the or each portion is made has a modulus not less than 850 p.s.i. at 100% elongation (as per the ASTM test procedure).
- the holding pressure applied by the clamp member(s) to the upper-engaging band portion(s) is preferably of the order of 1.4 kgf/sq. cm. (20 lbs/sq. in.).
- the or each clamp member is mounted for pivotal movement about an axis extending heightwise of the last.
- the clamping means comprises a plurality of clamp members, desirably the position of each such axis in relation to its clamp member, and also the cross-sectional shape, viewed along said axis, of each clamp member, are such as to enable the clamp members to pivot without adjacent members binding on one another.
- preferably fluid pressure operated means is provided for effecting movement of the clamp member(s) towards the last support as aforesaid.
- locking means e.g. a bar lock arrangement associated with the or each clamp member, is also provided for locking the clamp member(s) in position after having been moved towards the last support to hold the upper-engaging band portion(s) as aforesaid.
- the machine in accordance with the invention is preferably constructed and arranged in such a manner that operation of the fluid pressure operated means is also effective to cause inward movement of the lasting elements to take place, further fluid pressure operated means also being provided for effecting further inward movement of the lasting elements, when the or each clamp member is holding the upper-engaging band portion(s) against the upper as aforesaid.
- further inward movement of the lasting elements is through a predetermined distance.
- said locking means is operated to cause the clamp member (s) of-each side lasting assembly to be released, viz. when bedding pressure is applied through the lasting elements to such marginal portions.
- each lasting element In conventional machines which utilise lasting elements in the form of wiping fingers, it is usual to set each lasting element heightwise of the last support, so that, in effecting an in-wiping action on the shoe bottom, each such element engages the shoe just below the feather line and rides up over said line, in. this way achieving a desired in-wiping drafting force.
- each lasting element is movable not only inwardly towards the last support as aforesaid, but also heightwise thereof between a first condition, in which a pressure-applying surface thereof is spaced from the shoe bottom, and a second condition, in which,.in the operation of the machine, said element is in pressing engagement with the shoe bottom, the arrangement being such that, as each element is moved inwardly towards the last support as aforesaid, it is also moved from its first to its second condition, whereby the or each band portion is caused to be drawn around the feather edge of the shoe bottom, thus effecting a drafting force on the upper prior to the lasting marginal portion of the upper engaged thereby being pressed against corresponding marginal portions of the insole.
- band portions and lasting elements may be contemplated.
- a single band portion may be used in combination with a plurality of lasting elements.
- the lasting band means of each side lasting assembly may comprise a plurality of band portions, one associated with each lasting element, and in such case, furthermore, the lasting elements may be mounted in pairs and each pair have one clamp member associated therewith, each clamp member thus being arranged to hold two band portions in pressing engagement with the upper as aforesaid.
- each pair of lasting elements may have one band portion associated therewith.
- the machine in accordance with the invention now to be described is a combined heel seat and side lasting machine comprising a last support 10 on which a last can be supported, bottom uppermost, with an insole I located on the bottom thereof and a shoe upper U positioned thereon.
- the machine further comprises heel seat wiping instrumentalities 12 and a heel band 14, and also two side lasting assemblies generally designated 16, arranged forwardly of the heel seat lasting instrumentalities, one at either side of the last support 10.
- the side lasting assemblies are mirror-opposites of one another and the left hand assembly will be now described with reference to Figure 2.
- the side lasting assembly 16 comprises a sub-frame 18 carried on a forwardly extending plate 20 mounted on a main machine frame 22 by pin-and-slot connections whereby the side lasting assembly 16 can pivot bodily about an axis extending transversely of the machine through a leading edge of the heel seat wipers 12 when in their advanced condition.
- a handle 30 is provided on the front thereof.
- a block 32 which accommodates four push-rods 34 for sliding movement in a direction transversely of the bottom of a last carried by the last support 10, said rods being arranged side-by-side in the block 32.
- Fixedly supported at the end, near the last support 10, of each push-rod 34 is a block 36 carrying a pivot pin 38 which extends fore-and-aft of the machine and on which two levers 40 are supported for pivotal movement.
- Each lever 40 supports a further pivot pin 42, extending transversely of the machine, and carrying an arm 44 on which a lasting element 46 is supported by a pivot pin 48, the axis of which extends fore-and-aft of the machine.
- Each side lasting assembly 16 thus comprises eight such lasting elements.
- a spring 50 urges the lasting element downwardly about the pin 48 (anti-clockwise, viewing Figure 2).
- the lasting element 46 has a flat pressure-applying surface 52, while the end of said element facing the last support 10 is rounded at its top and bottom.
- each block 36 carries a pair of lasting elements 44, each element being independently pivotable therein about its own pin 42. Furthermore, it is to be noted that, when the pressure-applying surface 52 is horizontal, the axis of the pin 42 lies in the plane of said surface.
- each lever 40 For urging each lever 40 about its pin 38, furthermore, four piston-and-cylinder arrangements 66 are provided, each acting on two associated levers 40 and each being carried by a bracket 68 carried on a mounting 70 secured to a rearward end of its associated push-rod 34.
- a bracket 68 carried on a mounting 70 secured to a rearward end of its associated push-rod 34.
- a link 92 itself connected by a pin-and-slot connection to a piston rod 90 of its associated piston-and-cylinder arrangement 66.
- the levers 40 can be pivoted about the pin 38 independently of one another using a single piston-and-cylinder arrangement.
- the amount of movement in a clockwise direction of each lever is determined by a stop pin 94 carried by the bracket 68.
- each push-rod 80 Mounted in the block 32, one beneath each of the push-rods 34, are four further push-rods 80. At the end, nearer the last support 10, of each push-rod 80 is secured a plate 78 to which is in turn secured a C-shaped bracket 74 between the arms of which is secured a pivot pin 136, on which is freely pivotable a clamp pad 72, each pad thus being associated with a pair of lasting elements 46.
- the clamp pad 72 is of a polyurethane material having a Shore A hardness of 70.
- the position of the pin 136 and the cross-sectional shape, viewed in plan, of each pad 72 is such that pivoting movement of each pad can take place, independently of the other pads, without adjacent pads binding on one another.
- each push-rod 80 is mounted adjacent said end of each push-rod 80 adjacent said end of each push-rod 80.
- each block 96 is arranged to be in engagement, in the rest condition of the machine, with a face of a depending portion of its associated block 36.
- the push-rod 80 associated therewith is moved inwardly to move the clamp pad 72 inwardly towards the last support and, by engagement of the block 96 with the block 36, the pair of wiping elements 46 associated with said pad is moved inwardly also.
- locking means is actuated to lock the push-rod 80 in position, said locking means comprising an apertured plate 98 through a restricted aperture 100 of which passes the push-rod 80 (and through a larger aperture 102 of which passes the push-rod 34).
- Each plate 98 is pivoted at 104 on a lug of the block 32 and is urged by a spring 106 into a locking position in which the aperture 100 binds on the push-rod 80 in the manner of a bar lock.
- a bar 108 is mounted for pivotal movement on lugs of the block 32, said bar carrying four adjustable stop screws 110 each of which can engage with one of the plates 98.
- a piston-and-cylinder arrangement 11.2 is mounted on the block 32 and acts through a link 114 connecting the piston rod 116 thereof with said bar.
- each block 96 Carried on a depending portion of each block 96 is a bracket 118 supporting a piston-and-cylinder arrangement 56 a piston rod 58 of which is pivotally connected to a lever 60 pivoted, intermediate it length, on a rearward end of its associated push-rod 80, and connected by a pin-and-slot connection at its other end to the mounting 70 on the rearward end of its associated push-rod 34, for purposes to be hereinafter described.
- the machine in accordance with the invention al -so comprises lasting band means comprising a plurality of bands 128, one associated with each lasting element 46.
- the bands are connected by clamp plates 130 to upper surfaces of the arms 44 by which the lasting elements 46 associated with the bands are carried, and each band extends over the inwardly facing end face of its associated lasting element 46.
- the bands also extend, in pairs, side-by-side over the inwardly facing face of the clamp pad 72 associated therewith.
- the lower end of each band is connected by springs 132 to a bracket 134 mounted on the lower end of the plate 78.
- the springs 132 merely serve to control the lower end of the bands but do not affect the function of the bands, to be hereinafter described.
- the clamp pads are moved into pressing engagement with the bands as aforesaid, they are free to pivot, independently of one another, each about the axis of its pin 136, so that the surface of each pad, through which surface pressure is applied as aforesaid, engages,over substantially the whole of its width, its associated bands.
- the pressure applied by the pads is in the order of 1.4 kgf/sq. cm. (20 lbs./sq. in.).
- piston-and-cylinder arrangement 112 is de-actuated and the bar lock is applied, the clamp pads now being locked in said position.
- the lasting elements 46 are still in their first, raised, condition.
- piston-and-cylinder arrangements 56 are actuated whereupon, through their associated levers 60, the pivots of which on the push-rods 80 are now stationary, the push-rods 34, and thus the lasting elements 46,are moved inwardly relative to the clamp pads, and at the same time piston-and-cylinder arrangements 66 are actuated to cause the lasting elements 46 to be moved downwardly to a second, operative, condition in which the pressure-applying surface 52 of each element 46 can engage the shoe through its associated band 128.
- the inward movement of the elements 46 under the action of the cylinder 56 is limited by engagement of the forward face of the block 36 with the plate 78; the distance through which the elements 46 can move inwardly relative to the pads 72, is of the order of 50 mm.
- the effect of the inward and downward movement of the lasting elements 46 is to cause the bands 128 associated therewith to be drawn relative to the pads 72 heightwise of the last and about the feather line region thereof.
- the pressure applied by the pads is sufficient to hold the bands in pressing engagement with the upper while allowing such slippage to take place, and further the surface of each band engaging the upper is such that it can apply a frictional drafting force to the upper while the surface of the pad 72 is coated with a low-friction coating, e.g. polytetrafluoroethylene, so that the band can readily slip relative thereto.
- each lasting element 46 is brought into early engagement, along its length, with the feather edge of the shoe bottom, through its associated lasting band, and after such engagement is progressively caused to pivot in a clockwise direction (viewing Figure 2) about its pin 48 until it reaches its second condition in which it overlays the lasting marginal portion of the upper and serves to press them against corresponding marginal portions of the insole.
- This progressive action of each lasting element 46 has an "ironing" effect on the marginal portions of the upper.
- the material of the lasting bands 128 should not be significantly stretchy for this function, while being relatively flexible so as to conform to the shape of the shoe being operated upon. It has been found that a suitable material is a polyurethane having a Shore A hardness in the range 70 to 90 and a modulus not less than 850 p.s.i. at 100% elongation (as per the ASTM test procedure). Furthermore, each band has a thickness in the range 1.5 to 3.0 mm. (1/16 to 1/8 ins.).
- the machine in accordance with the invention may also comprise selector means (not shown) whereby any one pair of lasting elements 46 can be rendered inoperative.
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8022148 | 1980-10-16 | ||
FR8022148A FR2492237A1 (fr) | 1980-10-16 | 1980-10-16 | Machine a mettre sur forme et a monter les cotes des tiges de chaussures |
GB8035768 | 1980-11-07 | ||
GB8035768 | 1980-11-07 |
Publications (4)
Publication Number | Publication Date |
---|---|
EP0050429A2 true EP0050429A2 (fr) | 1982-04-28 |
EP0050429A3 EP0050429A3 (en) | 1982-10-06 |
EP0050429B1 EP0050429B1 (fr) | 1985-03-27 |
EP0050429B2 EP0050429B2 (fr) | 1992-01-22 |
Family
ID=26222033
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19810304527 Expired EP0050429B2 (fr) | 1980-10-16 | 1981-09-30 | Machine pour monter les parties marginales d'empeignes |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0050429B2 (fr) |
CS (1) | CS253563B2 (fr) |
DE (1) | DE3169563D1 (fr) |
ES (1) | ES8301096A1 (fr) |
WO (1) | WO1982001302A1 (fr) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0073642A2 (fr) * | 1981-08-28 | 1983-03-09 | British United Shoe Machinery Limited | Machine pour le montage des parties talon de chaussures |
EP0091300A1 (fr) * | 1982-04-02 | 1983-10-12 | British United Shoe Machinery Limited | Machine à monter les côtés de tiges de chaussures |
EP0339835A2 (fr) * | 1988-04-28 | 1989-11-02 | British United Shoe Machinery Limited | Machine pour le montage des parties avant, latérales et arrière d'une chaussure |
US6266686B1 (en) | 1995-12-19 | 2001-07-24 | Intel Corporation | Emptying packed data state during execution of packed data instructions |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4462132A (en) * | 1980-11-07 | 1984-07-31 | Usm Corporation | Shoe upper conforming machine |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1722499A (en) * | 1929-07-30 | Lasting machine | ||
US1843232A (en) * | 1929-07-15 | 1932-02-02 | United Shoe Machinery Corp | Lasting machine |
US1943344A (en) * | 1931-08-04 | 1934-01-16 | United Shoe Machinery Corp | Machine for use in the manufacture of shoes |
GB1079611A (en) * | 1963-05-04 | 1967-08-16 | British United Shoe Machinery | Improvements in or relating to shoe upper conforming machines |
GB1339835A (en) * | 1970-04-28 | 1973-12-05 | Gottwaldov Z Pres Stroj Np | Machine for shaping shoe uppers |
GB1559171A (en) * | 1975-09-18 | 1980-01-16 | Clark Ltd C & J | Manufacture of shoes |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2650680A1 (de) * | 1976-11-05 | 1978-05-11 | Schoen & Cie Gmbh | Vorrichtung zum umlegen des schaftrandes in einer spitzenzwickmaschine |
GB2047072B (en) * | 1979-04-21 | 1983-02-02 | British United Shoe Machinery | Shank lasting wipers |
-
1981
- 1981-09-30 DE DE8181304527T patent/DE3169563D1/de not_active Expired
- 1981-09-30 EP EP19810304527 patent/EP0050429B2/fr not_active Expired
- 1981-10-15 WO PCT/US1981/001391 patent/WO1982001302A1/fr unknown
- 1981-10-15 ES ES506898A patent/ES8301096A1/es not_active Expired
- 1981-10-16 CS CS817615A patent/CS253563B2/cs unknown
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1722499A (en) * | 1929-07-30 | Lasting machine | ||
US1843232A (en) * | 1929-07-15 | 1932-02-02 | United Shoe Machinery Corp | Lasting machine |
US1943344A (en) * | 1931-08-04 | 1934-01-16 | United Shoe Machinery Corp | Machine for use in the manufacture of shoes |
GB1079611A (en) * | 1963-05-04 | 1967-08-16 | British United Shoe Machinery | Improvements in or relating to shoe upper conforming machines |
GB1339835A (en) * | 1970-04-28 | 1973-12-05 | Gottwaldov Z Pres Stroj Np | Machine for shaping shoe uppers |
GB1559171A (en) * | 1975-09-18 | 1980-01-16 | Clark Ltd C & J | Manufacture of shoes |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0073642A2 (fr) * | 1981-08-28 | 1983-03-09 | British United Shoe Machinery Limited | Machine pour le montage des parties talon de chaussures |
EP0073642A3 (fr) * | 1981-08-28 | 1985-10-30 | British United Shoe Machinery Limited | Machine pour le montage des parties talon de chaussures |
EP0091300A1 (fr) * | 1982-04-02 | 1983-10-12 | British United Shoe Machinery Limited | Machine à monter les côtés de tiges de chaussures |
EP0339835A2 (fr) * | 1988-04-28 | 1989-11-02 | British United Shoe Machinery Limited | Machine pour le montage des parties avant, latérales et arrière d'une chaussure |
EP0339835A3 (fr) * | 1988-04-28 | 1992-01-15 | British United Shoe Machinery Limited | Machine pour le montage des parties avant, latérales et arrière d'une chaussure |
US6266686B1 (en) | 1995-12-19 | 2001-07-24 | Intel Corporation | Emptying packed data state during execution of packed data instructions |
Also Published As
Publication number | Publication date |
---|---|
ES506898A0 (es) | 1982-12-01 |
CS761581A2 (en) | 1984-06-18 |
EP0050429B1 (fr) | 1985-03-27 |
EP0050429B2 (fr) | 1992-01-22 |
DE3169563D1 (en) | 1985-05-02 |
CS253563B2 (en) | 1987-11-12 |
EP0050429A3 (en) | 1982-10-06 |
ES8301096A1 (es) | 1982-12-01 |
WO1982001302A1 (fr) | 1982-04-29 |
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