FR2631790A1 - METHOD AND DEVICE FOR MANUFACTURING SHOES WITH RIGID SHAPE, EMBITION FORM, BINDING MATRIX AND SIDE VENEER BLADES, AND SHOES OBTAINED - Google Patents

Abstract

The invention relates to a method of manufacturing shoes of the type consisting in fitting an upper, optionally provided with a lining, on a rigid form, in optionally providing the upper with a hard toe or a metal shell, in assembling a mounting sole with said upper during an assembly operation, and fixing an outsole on said mounting sole. The method according to the invention is characterized by the fact that, for the assembly operation, the cut rod 1 is placed without assembly return on a rigid form 2, the assembly insole 4 is placed on the sole 3 of said form rigid 2, the front of the rod 1 is stamped on said rigid form 2 by means of a stamping die 5 and said die 5 is kept clamped in the stamping position, the rear of the rod 1 is conformed to the By means of a casing form 7 held tight, the rear part of the rod 1 clamped by the casing form 7 is heated, the sides of the rod 1 are pressed against the rigid form 2 by means of side plating blades 9, 10 so that the rod 1 perfectly matches the contours of the form 2 and that the edges of the rod 1 are pressed against the edge of the insole 4, and the insole 4 is assembled to the adjacent edge of the upper 1. Application to the manufacture of shoes.

Description

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3SUPES OBTAINED

  The invention relates to a process for the fbrication of shoes of the type con-

  stitching a stem, possibly with a lining, on a

  rigid shape, to possibly provide the stem with a hard end or shell

  the metal, to assemble a mounting flange with said rod during

  of a mounting operation and to fix a outsole on said seat

mounting saddle.

  The first operation of manufacturing a shoe is to stitch the

  different pieces to form the top of the. shoe called rod.

  Then, this rod is assembled, during the assembly operation, with

  a sole, generally fine and flexible, called first assembly. The in-

  thus seems prepared can receive the final sole during the ope-

  sizing ration. The stem may be provided with a lining and, in the case

  safety shoes, a hard end or a metal shell.

  The present invention is particularly directed to the mounting operation which is

  performed traditionally by two major processes.

  The first method uses a rod having a mounting return to be folded over the first mounting. Such a rod is paved on a rigid form. The first mounting element is fastened to the rod by different means, and the return of

  assembly, to achieve complete solidarity between the rod and the first

  first mounting. The return of assembly makes it possible to stretch the material of the upper, generally of leather, by using its natural elasticity to make it fit close to the contours of the rigid form. Fixing the first mounting on the rod is done by various techniques

  known as nailing, stitching, or gluing.

  This first method, widely used, has the disadvantages of causing a loss of material of the rod by the return of assembly and not to

  allow a strict control of the tension of the leather.

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  To avoid the return of assembly, a second known method is to directly assemble a rod without return fitting to the first of

  mounting and, usually, by an edge-to-edge stitching. This process

  The disadvantage is that the edge-to-edge seam goes up quite high on the upper and requires a tight fitting to hide it.

  These types of interlocking soles are obtained either by injection or vulcanization.

  in a mold that rises above the sting of the stem, either

  by use of a cuvette sole, stitched or glued, and whose edges are

  rise high enough to hide the sting of the stem.

  The present invention aims to eliminate the disadvantages of known processes

  thanks to a new method of assembly using a rod without a return of

  floor. This process is easy to automate, facilitates the control of the leather tension and thus a better quality, uses the same shape for the assembly and assembly operations and thus allows a reduction of

  In progress. In addition, this new process allows all types of jointing.

  For this purpose, the method according to the invention is characterized in that, for the mounting operation, the cut stem is placed without mounting return.

  on a rigid form, it has the first mounting on the sole of the-

  said rigid form, it stamps the front of the rod on said rigid form by means of a stamping die and maintains said tight matrix in the bending position, the back of the rod is conformed by means of a casing shape maintained tight, heating the rear portion of the shank tightened by the form of interlocking, is plate the sides of the rod against the rigid form by means of side plating blades so that the rod

  perfectly matches the contours of the shape and that the edges of the stem are -

  are pressed against the edge of the first mounting, and then assembles the first mounting to the adjacent edge of the rod, preferably

by depositing a bead of glue.

  In the case of a lined rod, the lining and the shank are at least partially glued, so that the stamping operations of the front of the shoe, shaping and heating of the back of the shoe, and lateral plating ensure spreading of the glue and gluing

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  solid rod and liner.

  We put in place the hard end or, in the case of a safety shoe,

  the hard shell or metal shell are

  glued and placed between the liner and the rod so that the stamping of the front portion of the shoe provides a spreading of the glue

  and a cohesion between rod, hard end or shell and / or lining.

  The invention also relates to a device for the implementation

  LO of the previous process, as well as the shoes obtained by this method.

  The invention will be well understood on reading the following description made

  with reference to the accompanying drawings in which: L5 - Figure 1 is a schematic elevation and sectional view of a form provided with a shoe mounted according to the invention - Figure 2 is a sectional view along the line II FIG. 3 is a view from above of FIGS. 1 and 2 and FIG. 4 is a diagrammatic plan view of a device according to the invention. -According to the invention, a rod 1 is cut without mounting return and mounted on a rigid form 2 disposed with the sole 3 directed upwards. For lined shoes, the lining is fixed beforehand

at the stem 1.

  The first of assembly 4, having exactly the shape and dimensions of

  the sole 3 of the rigid form 2, is disposed on this block 3.

  The hard end (or the metal shell in the case of safety shoes

  té) is set up between the lining and the rod 1 and glued, these operations can be performed manually or auteatic nt.

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  The ensenble, consisting of the rod 1 disposed on the form 2 and the first

  mount 4 mounted on the sole 3 and this form 2 / is introduced

  in a mounting device shown very schematically in FIG.

  The mounting device comprises a stamping die 5 for the purpose of

  stamping the front of the shoe. Matrix 5, which is

  drag vertically from the bottom upwards according to the stroke V (Figure 1),

  wife in volume and in negative the front part of the rigid form 2,

  the thickness of the rod 1 and, taking into account the thickness of the rod 1 possibly, thicknesses of the lining and / or the hard end

or metal shell.

  During its vertical stroke, the stamping die 5 drives the front part of the rod 1 and the plate against the front end of the rigid form 2, possibly covering the lining and / or the hard end or metal shell. This plating under pressure produces a spreading of the glue disposed on the liner and / or the hard end or metal shell,

  by ensuring a strong cohesion of this whole. At the end of the race,

  trice encloses the stem, and possibly the hard end or the metal shell-

lique, against the rigid form 2.

  The device also includes a form of rear casing 7 conforming in volume and in negative the rear part of the rigid form 2 taking into account the thickness of the rod 1 and possibly the lining. The form of engagement 7 is animated by a horizontal race H parallel to the plane

  Nienen P of the rigid form 2. The stubbing form 7 is associated with a sys-

  heating element so that, when pressed against the rod 1,

  it ensures, under the combined effect of pressure and heat, a

  forming the rear emersion of the shoe.

  The device further comprises two side plating blades 9 and 10.

  The blade 9 conforms in negative and in volume the internal camber of the shoe and the blade 10 wife in negative and in volume the external carbirure of the shoe. The blades 9 and 10 are moved horizontally along the courses A and B respectively, orthogonal to the plane P, bringing them closer together

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  of the rigid form 2. At the end of the stroke of the blades 9 and 10, the rod 1 is pressed laterally against the rigid shape 2 and the edges of the rod 1

  are pressed against the edge of the first mounting 4.

  The assembly of the rod 2 with the first mounting 4 may take place by any suitable means. For example, a bead of glue 13 may be deposited

  (Figures 1 and 2) in the angle between the edge of the first of

  Stage 4 and the edge of the rod 1. This glue deposit can advantageously be performed by a programmable controller having stored the curve of the edge of the first mounting. After taking the glue and after loosening and

  separating from the stamping die 5, the stamping shape ar-

  7 and blades 9 and 10, the shape 2 is released with a rod 1

  assembled at the first assembly 4 and ready to be semaled.

  The semalage can be carried out outside the device that has just been

  described, the shoe being held on the rigid form 2.

  The sole assembly can be of any known type. In the case of a self-assembly

  jection, the adhesive bead 13 ensures total sealing and prohibits the return of injected material. It provides mechanical and heat resistance comparable to that of a sting. The first assembly can be

  partial. The bonding 13 may be discontinuous.

  The set of operations that has just been described can be performed in a precise and repetitive manner, possibly automatically, thanks to a perfect knowledge of the dimensions of the rigid form 2, a patronage of

  the rod 1 and the lining made with a precision of the order of one million

  meter, and a cut and a stitching of the rod 1 perfectly respecting the patronage. - The quality of the assembly obtained is higher because the forces exerted on the rod 1 are controlled and harmonized. In particular, breaks are avoided

  or frequent deformations during assembly of rod with return of assembly.

  The drive of the stamping die 5, the casing shape 7 and the blades 9 and 10 can be performed by any means ensuring a

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  precise displacement and pressure maintenance against the rigid form 2, for example mechanical, electrical, pneumatic, etc.

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Claims (5)

  1.- A method of manufacturing shoes of the type consisting in putting a rod, possibly provided with a lining, on a rigid foroe, to provide   possibly the stem of a hard end or a metal shell, to assem-   mounting a mounting flange with said rod during a mounting operation, and attaching an outsole to said mounting flange, characterized in that, for the mounting operation, the rod is placed (1)   cut without mounting return on a rigid form (2), it has the first   mounting (4) on the sole (3) of said rigid form (2), it is possible to   ends the front of the rod (1) on said rigid tube (2) by means of a machine   The drawing die (5) and holds said die (5) tightly in position.   With the stamping end, the back of the rod (1) is held in place by means of a tightly fitting form of clamping (7). The rear part of the rod (1), which is clamped by the form of emboitment, is heated ( 7), the sides of the shank (1) are pressed against the rigid form (2) by means of side seaming blades -5 (9,10), and the mounting piece (4) is assembled to the adjacent edge of the shank (1). rod (1) 2.- Method according to claim 1, characterized in that plate   perfectly the rod (1) on the contours of the form (2) so as to   ! 0 be perfectly the curve of the first mounting (4).   3. Method according to one of claims 1 and 2, characterized by the fact   that the assembly is carried out between the first mounting (4) and the rod (1)   depositing a bead of glue (13) continuous or discontinuous. ! 5   4. Method according to one of claims 1 to 3, characterized by the fact   that the first mounting (4) capletically covers the sole (3) of the rigid form (2).   5. Process according to one of claims 1 to 3, characterized in that   that the first mounting (4) partially covers the sole (3) of the rigid form (2). 263 1,790   6. Device for implementing the method according to one of the claims   1 to 5, characterized in that it comprises means for holding the rigid form (2) in a vertical position with its sole (3) turned   upwards, a stamping die (5) with vertical displacement (V) of the.   bottom up which wife in volume and in negative the front part of the   rigid form (2), taking into account the thickness of the rod (1) and, possibly,   thickness of the lining and / or the hard end or shell   metal, a form of emboltage (7) with horizontal displacement (11) parallel   parallel to the royen plane (P) of the rigid form (2) and conforming in volume and in negative the rear part of the rigid form (2) taking into account the thickness of the rod (1) and possibly the lining, heating means associated with the form of casing (7), as well as two blades of   lateral plating (9,10) with horizontal displacement (A, B) towards the   gide (2) orthogonalenent to the average plane (P) of this form (2), the blades (9,10) conforming in negative and in volume the internal and external archings   respectively of the rigid form (2).   7.- Footwear, characterized in that it is manufactured by the method   die according to one of claims 1 to 5.