CA1054317A - Method and apparatus for fitting footwear upper onto a last - Google Patents
Method and apparatus for fitting footwear upper onto a lastInfo
- Publication number
- CA1054317A CA1054317A CA270,200A CA270200A CA1054317A CA 1054317 A CA1054317 A CA 1054317A CA 270200 A CA270200 A CA 270200A CA 1054317 A CA1054317 A CA 1054317A
- Authority
- CA
- Canada
- Prior art keywords
- chamber
- diaphragm
- last
- casing
- 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.)
- Expired
Links
Classifications
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43D—MACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR
- A43D25/00—Devices for gluing shoe parts
- A43D25/06—Devices for gluing soles on shoe bottoms
- A43D25/07—Devices for gluing soles on shoe bottoms using flexible diaphragm pressing devices
Landscapes
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
- Actuator (AREA)
- Reciprocating Pumps (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
An upper is fitted onto a last using a casing containing a first, dome-shaped diaphragm defining a first chamber with a fixed last support; a second diaphragm defining a second chamber above the first chamber; a piston/cylinder arrangement for moving the casing and first and second diaphragms between an open position and a closed position in which the casing engages the support to define the first chamber around the support and lasted upper. By changing the fluid pressure in the first and second chambers, the upper can be drawn over the last in a controlled manner, while avoiding the formation of pleats in the upper. Using a pneumatic control device, first a low vacuum is drawn on the second chamber as the casing is moved to the closed position, and, before the casing reaches the closed position, the second chamber is subjected to a low super-atmospheric pressure. Thus, the first diaphragm is stretched over the last and upper. The casing is moved to the closed position, a high vacuum is drawn on the first chamber and the second chamber is subjected to a high super-atmospheric pressure, so that the upper is stretched around the last in pleat-free condition.
An upper is fitted onto a last using a casing containing a first, dome-shaped diaphragm defining a first chamber with a fixed last support; a second diaphragm defining a second chamber above the first chamber; a piston/cylinder arrangement for moving the casing and first and second diaphragms between an open position and a closed position in which the casing engages the support to define the first chamber around the support and lasted upper. By changing the fluid pressure in the first and second chambers, the upper can be drawn over the last in a controlled manner, while avoiding the formation of pleats in the upper. Using a pneumatic control device, first a low vacuum is drawn on the second chamber as the casing is moved to the closed position, and, before the casing reaches the closed position, the second chamber is subjected to a low super-atmospheric pressure. Thus, the first diaphragm is stretched over the last and upper. The casing is moved to the closed position, a high vacuum is drawn on the first chamber and the second chamber is subjected to a high super-atmospheric pressure, so that the upper is stretched around the last in pleat-free condition.
Description
~05~3~7 This inven-tion relates to a method and apparatus for f.itting a footwear upper onto a last.
More spec.ificall;-, tl~e invent.ion relates to a method and apparatus for fitting (lasting and shaping) a Eootwear upper, wherein the upper and an insole are placed on a last, which i9 disposed on a :Eixed support, positioning a dome-shaped diaphragm in a casing over the last and upper to form a first closed chamber around the last and upper, and, as an alternative, .
using a second diaphragm in the casing containing the first ;~
diaphragm to form a second closed chamber above the first .
closed chamber, subjecting the first chamber to subatmospheric pressure, and, if there is a second chamber, subjecting the second chamber to super-atmospheric pressure to tightly form the upper around the last so that the lower peripheral edges of the upper are adhered to the pre-glued insole.
A somewhat similar method is disclosed by British Patent No. 965,953, which issued to M. Bille and S. Turato on August 6, 1964. In accordance with the method of the British .
patent, a planar, plate-shaped support is employed with a bell-shaped cover pi~otally connected thereto. The cover is ~.
opened and closed using pneumatic cylinders. The cover is . provided with a folded edge, in which the periphery of a .
diaphragm is clamped to form a pair of dome-shaped chambers. ` ~
The diaphragm has a pleated edge at the location of clamping. . .
A last, upper and insole are placed on a support using a socle.
The volume of the chambers defined by the diaphragm and cover .: are considerably larger than the volume of the socle and last.
After sealing the cover on the support, the last is clamped onto the socle by connecting the hollow socle to a vacuum source. Then, the space between the diaphragm and the last is connected to the vacuum source, while air under super-atmospheric o543~7 pressure is admitted to the space between the diaphragm and the cover. Thus, the diaphragm is forced against the last and upper, and the diaphragm is pressed under the last. Thus, pressure is applied to the outside oE the dome-shaped diaphragm, and, because the dimensions of the diaphragm are greater than those of the las-t and insole, pleats are inevitably formed in the diaphragm and presumably in the upper. Moreover, an uncontrolled and irregular pressing of the diaphragm against the upper and last occurs. A variety of diaphragms are required .
for different shoe sizes.
The object of the present invention is to alleviate . .
the problems encountered with the above described prior art method.
Accordingly, the present invention provides a method including the steps of placing the second or upper chamber under a low vacuum; bringing the dome-shaped diaphragm into contact with the upper before effecting the seal between the ., .
casing and the fixed support; subjecting the second chamber to a low super-atmospheric pressure; stretching and tensioning the dome-shaped diaphragm over the last and upper; sealing the ;: .
casing on the support; subjecting the first chamber to a high ; vacuum; and subjecting the second chamber to a high super-atmospheric pressure before opening the first and second chambers ; to the atmosphere, and removing the dome-shaped diaphragm from the last.
~ Thus, it will be seen that the dome-shaped diaphragm . is gradually pressed, s'retched and tensioned against the upper from the top, so ~at the upper is tightly drawn against the last by frictional engagement with the diaphragm, and the entire upper is formed on the last under tension. The lasting of the upper around the bottom periphery of the last
More spec.ificall;-, tl~e invent.ion relates to a method and apparatus for fitting (lasting and shaping) a Eootwear upper, wherein the upper and an insole are placed on a last, which i9 disposed on a :Eixed support, positioning a dome-shaped diaphragm in a casing over the last and upper to form a first closed chamber around the last and upper, and, as an alternative, .
using a second diaphragm in the casing containing the first ;~
diaphragm to form a second closed chamber above the first .
closed chamber, subjecting the first chamber to subatmospheric pressure, and, if there is a second chamber, subjecting the second chamber to super-atmospheric pressure to tightly form the upper around the last so that the lower peripheral edges of the upper are adhered to the pre-glued insole.
A somewhat similar method is disclosed by British Patent No. 965,953, which issued to M. Bille and S. Turato on August 6, 1964. In accordance with the method of the British .
patent, a planar, plate-shaped support is employed with a bell-shaped cover pi~otally connected thereto. The cover is ~.
opened and closed using pneumatic cylinders. The cover is . provided with a folded edge, in which the periphery of a .
diaphragm is clamped to form a pair of dome-shaped chambers. ` ~
The diaphragm has a pleated edge at the location of clamping. . .
A last, upper and insole are placed on a support using a socle.
The volume of the chambers defined by the diaphragm and cover .: are considerably larger than the volume of the socle and last.
After sealing the cover on the support, the last is clamped onto the socle by connecting the hollow socle to a vacuum source. Then, the space between the diaphragm and the last is connected to the vacuum source, while air under super-atmospheric o543~7 pressure is admitted to the space between the diaphragm and the cover. Thus, the diaphragm is forced against the last and upper, and the diaphragm is pressed under the last. Thus, pressure is applied to the outside oE the dome-shaped diaphragm, and, because the dimensions of the diaphragm are greater than those of the las-t and insole, pleats are inevitably formed in the diaphragm and presumably in the upper. Moreover, an uncontrolled and irregular pressing of the diaphragm against the upper and last occurs. A variety of diaphragms are required .
for different shoe sizes.
The object of the present invention is to alleviate . .
the problems encountered with the above described prior art method.
Accordingly, the present invention provides a method including the steps of placing the second or upper chamber under a low vacuum; bringing the dome-shaped diaphragm into contact with the upper before effecting the seal between the ., .
casing and the fixed support; subjecting the second chamber to a low super-atmospheric pressure; stretching and tensioning the dome-shaped diaphragm over the last and upper; sealing the ;: .
casing on the support; subjecting the first chamber to a high ; vacuum; and subjecting the second chamber to a high super-atmospheric pressure before opening the first and second chambers ; to the atmosphere, and removing the dome-shaped diaphragm from the last.
~ Thus, it will be seen that the dome-shaped diaphragm . is gradually pressed, s'retched and tensioned against the upper from the top, so ~at the upper is tightly drawn against the last by frictional engagement with the diaphragm, and the entire upper is formed on the last under tension. The lasting of the upper around the bottom periphery of the last
- 2 ~
';' . `' :1 ~1159~ 7 occurs only after the upper has been formed and tensioned which is qui-te lmportant in order to ensure correct shape and fit for the ultimate shoe. The heel portion with a counter and the reinforced toe end oE the upper are simultaneously formed under tension, using a vacuum and/or high fluid pressure on one or both sides of the dome-shaped diaphragm. The use of high pressure avoids the formation of irregularities in the upper. Finally, because of its elasticity, the dome-shaped diaphragm is suitable for a variety of sizes of shoes.
The invention also provides an apparatus for carrying out the method automatically, utilizing a pneumatic control device.
In its simplest form, the apparatus includes a support for a last on which an upper is positioned; a casing for sealing-ly engaging the support; a flexible, resilient, dome-shaped - diaphragm secured at its bottom peripheral edge to the casing and extending upwardly into the casing; means for rotating the casing with respect to the support between open and closed positions, in its relaxed condition the part of diaphragm which contacts the upper having a smaller surface area than that of the upper. In order to increase the pulling effect of the `~
diaphragm on the upper, the diaphragm may be roughened to ;~ increase its coefficient of friction, and the diaphragm may have a variable thickness so that the maximum extension in use occurs in thoseparts of the diaphragm in contact with the upper.
The invention will now be described in greater detail ..
with reference to the accompanying drawings, which illustrate a preferred embodiment of the invention and wherein~
Figure 1 is a partly sectioned elevation view of the apparatus, with a schematic illustration of a pneumatic control device;
Figure 2 is a plan view of the apparatus of Fig. l;
_ 3 ~
Figure 3 is a schematic partly sectioned elevation v.iew of one end of the apparatus of Fig. 1 in the open position; and Figure 4 is a view similar -to Fig. 3 of the apparatus ~: .
of Fig. 1 in a closed position. ` ;
With reference to the drawings, the preferred form of !.
th~ apparatus of the present invention includes a frame .. ~ ..
generally indicated at 1 formed of angle irons 2. A planar plate 3 is fixedly mounted on one end of the frame for : supporting a casing generally indicated at 4. An elliptical rubber sealing ring 5 is mounted on the plate 3. The casing 4 is mounted on one end of a pair of angle irons 6, the other ~
ends of which are connected to a shaft 7. The shaft 7 is .
~ pivotally mounted in bearing~containing brackets 8 on the frame 1. ~`
The casing 4 can be moved up and down by means of one or more cylinders 9 pivotally connected at its lower end to the frame 1. A piston rod 10 extending upwardly from the cylinder 9 is connected to the angle irons 6 by a clevis.
The casing 4 includes an elliptical top plate 11 to . 20 which a-plurality of tubes or rods 12 are welded to form the ~:
sides of the casing. The tubes are spaced equidistant apart about the periphery of the casing, and their lower ends are ; welded to a base 13 of U-shaped cross sectional configuration.
. The base 13 effects a seal with the r~ng 5 when the casing 4 ~ ~
.. ~ is in the closed position (Figs. 1 and 4). The lower peripheral ;~ : :
-. edge of a dome-shaped diaphragm 14 formed of silicon rubber is ` connected to the inner side of the base 13 in an airtight manner. A tubular diaphragm 15 is secured in an airtight '3i^
' ~. :
.` manner to outer side of the base 13 and to a flange 16 extending downwardly from the top plate 11 of the casing 4.
The diaphragm 15 is preferably transparent to permit viewing of the upper fitting process. A perforated, tubular plate 17 .. - . . . . : . . ~ .. . .
~5~3~'7 `
is secured to the pla-te 11 and the base 13 outside of the diaphragm 15.
A frusto-conical last support 19 with an elliptical base 18 is mounted on the plate 3. When the casing is closed, khe bottom edge of the support 19 lies in a plane slightly below the top edge of the base 13 of the casing 4, thus preventing too great a deformation of the diaphragm 14. A last carrier 21 is mounted on the support 19 by means of pins 20.
A last 22 is secured on the carrier 21 by a steel plate 23 (Fig. 2) on the last and bar magnets 24 embedded in the carrier 21. In use, an upper 25 is placed on the last 22. Pleat guides l9a and 21_ are provided on the support 19 and on the last carrier 21 for forming pleats in the diaphragm 14 in a controlled manner, whereby pleats in the footwear upper 25 are avoided.
Aftex the casing 4 is moved from the open position (Fig. 3) to the closed position (Fig. 4) against the sealing ring 5, the casing is locked in such closed position by a ; locking device. The locking device includes a cylinder 26 (Fig. 1) mounted on the frame 1, having a piston rod 27 connected to a transversely extending rod 28. A pair of knee ; levers including arms 29 and 30 are pivotally connected to the rod 28. Locking elements 31 are mounted on the outer ends ` of the levers. The locking elements 31 are moved into slots 32 in strips 33 secured to plates 34 on the angle irons 6 for locking the casing 4 in the closed position.
-~ A safety device consisting of a valve 35 and a spring biased lever 36 is mounted in the casing 4 for preventing closing of the casing and damage to the diaphragm 14 when no `` 30 last is disposed on the carrier 21. Moreover,; an emergency ~ `
J
.: .: - . ' ~: , 10543~ 7 stop device is provided for ensuring the safety af operating personnel. The emeryency stop device includes a valve 37 controlled by an elastic cord 38 stretched around the apparatus.
The cord 38 is intended to move an arm 39 connected to the va:Lve 37. Sprinys ~0 maintain the cord 38 in tightly stretched condition, the springs being mounted on uprights 41 on the frame 1.
Operation of the apparatus is controlled by a pneumatic control device generally indicated at 42 (Fig. 1).
With the casing 4 in the open position (Fig. 3), an upper 25 is placed on a last 22. Operation is started by means of two handed actuation of valves 43 which open a valve 49 for supplying air under pressure to the cylinder 9 to move the casing 4 to the closed position while a low vacuum (20-50~) is produced in the chamber 45 by a reducing valve 46 and a valve 47 to pretension the diaphragm 14. When the diaphragm 14 covers the top side of the last 22 and the upper 25, the chamber 45 is subjected to low super-atmospheric pressure (0.1 to 0.6 atmosphere) via the valve 47 and the reducing valve 58a, which is actuated by the valve 48. The valve 48 is opened by an arm 49 mounted on the piston rod 10. Air fed through the valve 47 enters the chamber 45 via the valve 35, which preven-ts further closing of the casing and damage to the diaphragm 14 when no ::
last is present on the carrier 21.
. .
~ Thus, shaping of the upper 25 is started. As the -; casing 4 moves to the closed or sealed position on the ring 5, first the top and then the sides of the upper 25 are shaped : , and stretched along the last 22 as the upper is partly entrained ;`- by the stretching diaphragm ]4. When the bottom of the casing ~ 30 4 engages the ring 5 and airtight last chamber 50 is formed.
" ~
.` ~ .
~ - 6 -., ' .
- ~ :
.
~(~5~3:~7 Valve 51 is actua-ted the arm 49 on the piston rod 10, and via a valve 52a with control valve 52_, the valve 52 is switched to connect a source of high vacuum (not shown) to the last chambex 50. By drawing a vac~lum (95~) on the chamber 50, the diaphragm 14 folds -the bot-tom edge of the upper 25 without pleats around the lower edge oE the last 22. The absence of pleats is ensured by pleat guides 19_ and 21a. The upper 25 is bonded -to -the pre-glued insole (not shown) which is located on the base of the last 22. Meanwhile, the diaphragm 14 is stretched further to continue shaping and tensioning of the upper 25.
The valve 53 is also switched, so that the cylinder 26 locks the casing in the closed position. Upon completion of locking, an arm 54 connected to the piston rod 27 actuates the valve 55, which actuates adjustable delay mechanisms 56 : and 57, and valve 58 to charge the chamber 45 with super-atmospheric pressure (2 atmospheres) from the reducing valve ~ . :
59. Thus, shaping of the upper 25 and the removal of possible :~ irregularities are facilitated which is especially beneficial in the shaping of the toe and heel ends of the upper which may - contain stiff reinforcing material.
` After a predetermined interval, which may be adjusted ;
by means of valves 60 and 61, the valves 47 and 52 are switched via a T-relay 61a to replace the high pressure in the chamber :~
"~ 45 with a low vacuum, while the vacuum in the last chamber 50 :~ is abolished. Air under pressure is admitted to a control poxt 62 of the valve 53. For safety purposes, the valve 53 can be switched only when the pressure in the chamber 45 falls to 0.7 atmosphere, and air is removed from port 63 via a valve 64 and a T-relay 64a~ Then the casing 4 is unlocked by : ~ 7 ~
."~
: . ... , - . . . . : .
1~43~L7 means of the cylinder 26, and using a valve 65 and a T-relay 67 air under pressure is supplied to the cylinder 9 via valve 44 -to lift the casing 4 from -the las-t 22, so that the last and Ei-tted upper 25 can be removed from the las-t carrier.
I~ the valve 37 is actuated by contactlng the cord 38 during downward movement of the casing 4, the valve 44 is immediately actuated to reverse the direction of movement of the piston rod 9 using valves 66, 66_ and 67. The casing 4 . rises to the topmost position and remains there until the ; 10 closing order is again given. If the valve 37 is actuated when the casing 4 is closed, only the valve 47 and 52 are . actuated, and the unlocking and opening operations occur in the usual manner.
.: ' ' . .
- .
' ~........... .. .-. - , .~ : : . - :- ~
';' . `' :1 ~1159~ 7 occurs only after the upper has been formed and tensioned which is qui-te lmportant in order to ensure correct shape and fit for the ultimate shoe. The heel portion with a counter and the reinforced toe end oE the upper are simultaneously formed under tension, using a vacuum and/or high fluid pressure on one or both sides of the dome-shaped diaphragm. The use of high pressure avoids the formation of irregularities in the upper. Finally, because of its elasticity, the dome-shaped diaphragm is suitable for a variety of sizes of shoes.
The invention also provides an apparatus for carrying out the method automatically, utilizing a pneumatic control device.
In its simplest form, the apparatus includes a support for a last on which an upper is positioned; a casing for sealing-ly engaging the support; a flexible, resilient, dome-shaped - diaphragm secured at its bottom peripheral edge to the casing and extending upwardly into the casing; means for rotating the casing with respect to the support between open and closed positions, in its relaxed condition the part of diaphragm which contacts the upper having a smaller surface area than that of the upper. In order to increase the pulling effect of the `~
diaphragm on the upper, the diaphragm may be roughened to ;~ increase its coefficient of friction, and the diaphragm may have a variable thickness so that the maximum extension in use occurs in thoseparts of the diaphragm in contact with the upper.
The invention will now be described in greater detail ..
with reference to the accompanying drawings, which illustrate a preferred embodiment of the invention and wherein~
Figure 1 is a partly sectioned elevation view of the apparatus, with a schematic illustration of a pneumatic control device;
Figure 2 is a plan view of the apparatus of Fig. l;
_ 3 ~
Figure 3 is a schematic partly sectioned elevation v.iew of one end of the apparatus of Fig. 1 in the open position; and Figure 4 is a view similar -to Fig. 3 of the apparatus ~: .
of Fig. 1 in a closed position. ` ;
With reference to the drawings, the preferred form of !.
th~ apparatus of the present invention includes a frame .. ~ ..
generally indicated at 1 formed of angle irons 2. A planar plate 3 is fixedly mounted on one end of the frame for : supporting a casing generally indicated at 4. An elliptical rubber sealing ring 5 is mounted on the plate 3. The casing 4 is mounted on one end of a pair of angle irons 6, the other ~
ends of which are connected to a shaft 7. The shaft 7 is .
~ pivotally mounted in bearing~containing brackets 8 on the frame 1. ~`
The casing 4 can be moved up and down by means of one or more cylinders 9 pivotally connected at its lower end to the frame 1. A piston rod 10 extending upwardly from the cylinder 9 is connected to the angle irons 6 by a clevis.
The casing 4 includes an elliptical top plate 11 to . 20 which a-plurality of tubes or rods 12 are welded to form the ~:
sides of the casing. The tubes are spaced equidistant apart about the periphery of the casing, and their lower ends are ; welded to a base 13 of U-shaped cross sectional configuration.
. The base 13 effects a seal with the r~ng 5 when the casing 4 ~ ~
.. ~ is in the closed position (Figs. 1 and 4). The lower peripheral ;~ : :
-. edge of a dome-shaped diaphragm 14 formed of silicon rubber is ` connected to the inner side of the base 13 in an airtight manner. A tubular diaphragm 15 is secured in an airtight '3i^
' ~. :
.` manner to outer side of the base 13 and to a flange 16 extending downwardly from the top plate 11 of the casing 4.
The diaphragm 15 is preferably transparent to permit viewing of the upper fitting process. A perforated, tubular plate 17 .. - . . . . : . . ~ .. . .
~5~3~'7 `
is secured to the pla-te 11 and the base 13 outside of the diaphragm 15.
A frusto-conical last support 19 with an elliptical base 18 is mounted on the plate 3. When the casing is closed, khe bottom edge of the support 19 lies in a plane slightly below the top edge of the base 13 of the casing 4, thus preventing too great a deformation of the diaphragm 14. A last carrier 21 is mounted on the support 19 by means of pins 20.
A last 22 is secured on the carrier 21 by a steel plate 23 (Fig. 2) on the last and bar magnets 24 embedded in the carrier 21. In use, an upper 25 is placed on the last 22. Pleat guides l9a and 21_ are provided on the support 19 and on the last carrier 21 for forming pleats in the diaphragm 14 in a controlled manner, whereby pleats in the footwear upper 25 are avoided.
Aftex the casing 4 is moved from the open position (Fig. 3) to the closed position (Fig. 4) against the sealing ring 5, the casing is locked in such closed position by a ; locking device. The locking device includes a cylinder 26 (Fig. 1) mounted on the frame 1, having a piston rod 27 connected to a transversely extending rod 28. A pair of knee ; levers including arms 29 and 30 are pivotally connected to the rod 28. Locking elements 31 are mounted on the outer ends ` of the levers. The locking elements 31 are moved into slots 32 in strips 33 secured to plates 34 on the angle irons 6 for locking the casing 4 in the closed position.
-~ A safety device consisting of a valve 35 and a spring biased lever 36 is mounted in the casing 4 for preventing closing of the casing and damage to the diaphragm 14 when no `` 30 last is disposed on the carrier 21. Moreover,; an emergency ~ `
J
.: .: - . ' ~: , 10543~ 7 stop device is provided for ensuring the safety af operating personnel. The emeryency stop device includes a valve 37 controlled by an elastic cord 38 stretched around the apparatus.
The cord 38 is intended to move an arm 39 connected to the va:Lve 37. Sprinys ~0 maintain the cord 38 in tightly stretched condition, the springs being mounted on uprights 41 on the frame 1.
Operation of the apparatus is controlled by a pneumatic control device generally indicated at 42 (Fig. 1).
With the casing 4 in the open position (Fig. 3), an upper 25 is placed on a last 22. Operation is started by means of two handed actuation of valves 43 which open a valve 49 for supplying air under pressure to the cylinder 9 to move the casing 4 to the closed position while a low vacuum (20-50~) is produced in the chamber 45 by a reducing valve 46 and a valve 47 to pretension the diaphragm 14. When the diaphragm 14 covers the top side of the last 22 and the upper 25, the chamber 45 is subjected to low super-atmospheric pressure (0.1 to 0.6 atmosphere) via the valve 47 and the reducing valve 58a, which is actuated by the valve 48. The valve 48 is opened by an arm 49 mounted on the piston rod 10. Air fed through the valve 47 enters the chamber 45 via the valve 35, which preven-ts further closing of the casing and damage to the diaphragm 14 when no ::
last is present on the carrier 21.
. .
~ Thus, shaping of the upper 25 is started. As the -; casing 4 moves to the closed or sealed position on the ring 5, first the top and then the sides of the upper 25 are shaped : , and stretched along the last 22 as the upper is partly entrained ;`- by the stretching diaphragm ]4. When the bottom of the casing ~ 30 4 engages the ring 5 and airtight last chamber 50 is formed.
" ~
.` ~ .
~ - 6 -., ' .
- ~ :
.
~(~5~3:~7 Valve 51 is actua-ted the arm 49 on the piston rod 10, and via a valve 52a with control valve 52_, the valve 52 is switched to connect a source of high vacuum (not shown) to the last chambex 50. By drawing a vac~lum (95~) on the chamber 50, the diaphragm 14 folds -the bot-tom edge of the upper 25 without pleats around the lower edge oE the last 22. The absence of pleats is ensured by pleat guides 19_ and 21a. The upper 25 is bonded -to -the pre-glued insole (not shown) which is located on the base of the last 22. Meanwhile, the diaphragm 14 is stretched further to continue shaping and tensioning of the upper 25.
The valve 53 is also switched, so that the cylinder 26 locks the casing in the closed position. Upon completion of locking, an arm 54 connected to the piston rod 27 actuates the valve 55, which actuates adjustable delay mechanisms 56 : and 57, and valve 58 to charge the chamber 45 with super-atmospheric pressure (2 atmospheres) from the reducing valve ~ . :
59. Thus, shaping of the upper 25 and the removal of possible :~ irregularities are facilitated which is especially beneficial in the shaping of the toe and heel ends of the upper which may - contain stiff reinforcing material.
` After a predetermined interval, which may be adjusted ;
by means of valves 60 and 61, the valves 47 and 52 are switched via a T-relay 61a to replace the high pressure in the chamber :~
"~ 45 with a low vacuum, while the vacuum in the last chamber 50 :~ is abolished. Air under pressure is admitted to a control poxt 62 of the valve 53. For safety purposes, the valve 53 can be switched only when the pressure in the chamber 45 falls to 0.7 atmosphere, and air is removed from port 63 via a valve 64 and a T-relay 64a~ Then the casing 4 is unlocked by : ~ 7 ~
."~
: . ... , - . . . . : .
1~43~L7 means of the cylinder 26, and using a valve 65 and a T-relay 67 air under pressure is supplied to the cylinder 9 via valve 44 -to lift the casing 4 from -the las-t 22, so that the last and Ei-tted upper 25 can be removed from the las-t carrier.
I~ the valve 37 is actuated by contactlng the cord 38 during downward movement of the casing 4, the valve 44 is immediately actuated to reverse the direction of movement of the piston rod 9 using valves 66, 66_ and 67. The casing 4 . rises to the topmost position and remains there until the ; 10 closing order is again given. If the valve 37 is actuated when the casing 4 is closed, only the valve 47 and 52 are . actuated, and the unlocking and opening operations occur in the usual manner.
.: ' ' . .
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' ~........... .. .-. - , .~ : : . - :- ~
Claims (5)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A method of fitting a footwear upper onto a last disposed on a fixed support, in which a resilient, dome-shaped diaphragm in a casing is positioned over the last and upper to form a first chamber around the support, last and upper; while a second closed chamber is formed above said first chamber by the diaphragm and top and side walls of the casing, said method comprising the steps of subjecting the second chamber to a low vacuum; contacting the upper with said diaphragm to tension the diaphragm on the upper; forming said first chamber by closing the casing on the support; subjecting said second chamber to low superatmospheric pressure to tension the diaphragm on the upper;
and subjecting said first chamber to a high vacuum while subject-ing the second chamber to a high superatmospheric pressure.
and subjecting said first chamber to a high vacuum while subject-ing the second chamber to a high superatmospheric pressure.
2. An apparatus for fitting a footwear upper onto a last comprising a frame; a last support mounted on said frame for receiving a lasted upper; a casing; a flexible, resilient, dome-shaped diaphragm in said casing; means for rotating said casing with respect to said frame between an open position in which a last and upper can be mounted on the support and a closed position in which the diaphragm and support define a first chamber, in the relaxed condition the area of that portion of the first diaphragm which contacts the upper in use being smaller than the surface area of the upper; said casing including side and top walls, which together with said diaphragm define a second chamber above said first chamber; and a pneumatic control device for subjecting said first chamber to a vacuum and alter-nately subjecting said second chamber to a vacuum and superatmos-pheric pressure.
3. An apparatus according to claim 2, wherein said last support includes pleat guides for controlling deformation of said diaphragm and consequently shaping of the upper.
4. An apparatus according to claim 2 or 3, wherein the bottom surface of said diaphragm is roughened to increase its coefficient of friction.
5. An apparatus according to claim 2 or 3, wherein the thickness of said diaphragm varies, so that, in use, maximum extension occurs in those areas of the diaphragm in contact with the upper.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL7600594A NL166388C (en) | 1976-01-21 | 1976-01-21 | METHOD AND APPARATUS FOR FORMING AND SWINGING THE UPPER OF FOOTWEAR |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1054317A true CA1054317A (en) | 1979-05-15 |
Family
ID=19825488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA270,200A Expired CA1054317A (en) | 1976-01-21 | 1977-01-21 | Method and apparatus for fitting footwear upper onto a last |
Country Status (7)
| Country | Link |
|---|---|
| JP (1) | JPS5918049B2 (en) |
| AU (1) | AU505526B2 (en) |
| CA (1) | CA1054317A (en) |
| DE (1) | DE2701966C3 (en) |
| FR (1) | FR2338665A1 (en) |
| GB (1) | GB1520094A (en) |
| NL (1) | NL166388C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2505147A1 (en) * | 1981-05-06 | 1982-11-12 | Anver | IMPROVED COLLAGE PRESS FOR UPRIGHT SHOES |
| DE3338731C2 (en) * | 1983-10-25 | 1985-12-19 | Herbert Dr.-Ing. 8032 Gräfelfing Funck | Gluing press for gluing shoe soles to listed upper shoes |
| AT386731B (en) * | 1986-10-21 | 1988-10-10 | Tyrolia Freizeitgeraete | METHOD FOR PRODUCING A SHOE |
| ITBO20010104A1 (en) * | 2001-02-27 | 2002-08-27 | Mario Ciucani | METHOD FOR GLUING A BOTTOM TO A RELATED FOOTWEAR UPPER |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE328545C (en) * | 1915-11-06 | 1920-10-29 | Boston Rubber Shoe Company | A device for preparing rubber footwear for vulcanization consisting of a pressurized membrane |
| US3160899A (en) * | 1961-05-08 | 1964-12-15 | Bille Mario | Device for glueing the upper to soles of shoes |
| US3422475A (en) * | 1966-04-01 | 1969-01-21 | Union Carbide Corp | Process and apparatus for shaping a shoe upper and bonding a shoe upper to an insole |
-
1976
- 1976-01-21 NL NL7600594A patent/NL166388C/en not_active IP Right Cessation
-
1977
- 1977-01-19 DE DE19772701966 patent/DE2701966C3/en not_active Expired
- 1977-01-20 AU AU21475/77A patent/AU505526B2/en not_active Expired
- 1977-01-20 FR FR7701628A patent/FR2338665A1/en active Granted
- 1977-01-21 GB GB264377A patent/GB1520094A/en not_active Expired
- 1977-01-21 CA CA270,200A patent/CA1054317A/en not_active Expired
- 1977-01-21 JP JP573477A patent/JPS5918049B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB1520094A (en) | 1978-08-02 |
| DE2701966B2 (en) | 1980-10-16 |
| DE2701966C3 (en) | 1981-06-11 |
| AU2147577A (en) | 1978-07-27 |
| JPS5290350A (en) | 1977-07-29 |
| NL166388B (en) | 1981-03-16 |
| NL7600594A (en) | 1977-07-25 |
| FR2338665B1 (en) | 1980-06-06 |
| NL166388C (en) | 1981-08-17 |
| AU505526B2 (en) | 1979-11-22 |
| FR2338665A1 (en) | 1977-08-19 |
| DE2701966A1 (en) | 1977-07-28 |
| JPS5918049B2 (en) | 1984-04-25 |
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