FR2523414A1 - Work post for footwear manufacture - has pair of lasts pivoting on frame to low position for bonding uppers to soles - Google Patents

Abstract

The work post for footwear manufacture has a frame (2) with a support (7) for a pair of lasts (8). This pivots on a horizontal axle (3) between two positions. In the high position, the uppers (23) and inner soles (24) are placed on the lasts. In the low position, the soles (24) are bonded to the uppers. At the bottom of the frame there is a plate of a press (10) with two seats (12) in which the soles (13) are fitted. When the support is in its low position, the plate raised to compress the soles and the inner soles.

Description

 The present invention relates to the manufacture of footwear, and in particular of shoes, sandals, slippers, sneakers and the like.

 I1 is known to manufacture such items on a carousel at the periphery of which are installed different stations corresponding to the different stages of manufacture. In a first station, the rod provided with its first mounting sole, and previously formed and dried, is engaged on a heating form intended to flatten the bead formed by the peripheral seam of the bead of seam of the first on the rod. post, the upper and its first flattened are placed on a cold form and 1 1 worker applies on the first a pre-glued sole. I1 therefore requires a lot of skill to the worker so that the sole glued on the first wife exactly its outline; thereafter it is necessary to exert a pressure on the sole to perfect the bonding before the shoe arrives at the dispensing station of the carousel.

 The present invention relates to a work station for the manufacture of footwear which allows the worker to automatically glue, with very high precision and without any subsequent touch up, a pre-glued sole, at a upper with its first mounting sole.

 For this purpose, this work station, comprising a support for a pair of extendable heating forms, right foot and left foot of shoes of a determined size, is characterized in that this support is mounted pivoting about a horizontal axis, so as to be able to occupy two positions, a high position in which the underside of the heating forms is directed upwards, to allow the worker, when these forms are in the retracted position, to thread on them shoe uppers provided of their first sole, and a low position in which the underside of these forms is directed downward for the purpose of placing and gluing the soles, this work station further comprising a press plate having two housings in which can be placed and kept in the desired position of the soles, right and left, for shoes of the same size as that of the aforementioned uppers, and a frame common to this support of heating forms and this press plate, which are arranged on it so that, when the support of forms is in the low position, and that the press plate is raised, the soles come to apply very exactly, in the desired position, -on the below the first soles of the rods mounted on these forms, and are pressed against them with the desired pressure.

 The present invention also relates to a carousel machine for the manufacture of footwear, and specially designed for sticking soles on uppers provided with their first mounting sole, comprising a certain number of said work stations, at least equal to three, suitably distributed at its periphery, and rotating with a step-apas movement about its axis, each time by an angle equal to the angular difference between two contiguous positions.

 It also relates to a method of using such a machine in which only three workers are distributed around it and work on it, a first worker who, as soon as a workstation assigned to a size of footwear stops in front of him, the heating forms being in the high position and in the retracted position, puts on them rods of the same size provided with their first mounting sole, a second worker who, when this same station then stops in front of him, deposits soles of the same size in the slots provided for this purpose in the press plate of the workstation, and causes the pivoting of the support of forms to move it from its high position to its low position, and the lifting of the press to apply and compress the soles against the first of the corresponding rods and stick them to it, and a third worker who, when this same workstation stops in front of him, lowers the press plate e, rotates the shape support upwards, moves the shapes from their extended position to their retracted position and removes the finished footwear therefrom.

 It must of course be that the first worker is constantly supplied with rods of the desired sizes, that the second worker is supplied with soles of the corresponding sizes and that the third worker is freed from shoes whose assembly is finished.

 This machine could possibly have only three stations; however, in this case, it could manufacture, without modification, only shoes of three different sizes and, on the other hand, the time of a complete rotation of the machine would be insufficient to heat the shoes, and cause what this is called "vaporization", and would also be insufficient to ensure perfect bonding of the soles at the first assembly.

 The machine according to the present invention therefore preferably comprises a number of stations greater than three and, in particular, equal to that of the series of sizes that it is desired to obtain for the type of shoes that one manufactures, for example, ten or twelve positions including one for shoe size 35, one for shoe size 36, two for shoe size 37, two for shoe size 38-, one for shoe size 39, one for shoe size 40 and one for shoe size 41; but it can, of course, include a greater or lesser number thereof according to the series of sizes to be manufactured.

The attached drawing schematically shows a machine according to the invention of which only three work stations have been shown
Figure 1 is a schematic plan view.

 Figure 2 is a front view of a work station of this machine.

 Figure 3 is a side view of this station as it is used for laying rods on forms.

 Figures 4 and 5 are similar views of the same station, as it is used for laying and gluing the soles on the first mounting.

 The machine is of the carousel type and has at its periphery at least three work stations I, II, III; this carousel rotates intermittently each time by an angle equal to that separating two contiguous stations in the direction of the arrow F. The stations I and II are assembly stations and the station III a delivery station.

 Each station consists of a U-shaped chassis 2, the uprights of which are braced at their upper part, at breast height, by an axis 3, the ends of which are freely mounted in bearings 4 of the chassis uprights, one of these ends 5 being integral in rotation with a drive pinion 6.

 On this axis 3 are wedged the supports 7 of the heating extensible forms 8, which can, in known manner, consist of two pieces of variable spacing, on which can be mounted the uppers 23 of the footwear, when they are in the retracted position .

 This axis is capable of turning around 1800 to present the shapes either upwards (Figures 2, 3) or downwards (Figures 4, 5).

 At the lower part of the chassis is a plate 10 supporting a press cushion 11 having recesses 12 intended to receive and maintain soles 13 whose size corresponds to that of the rods 23 mounted on the forms 8.

 This plate is integral with the rod 14 of the piston of a pneumatic or hydraulic cylinder whose control 17 is within reach of the worker located in front of the station.

 The plate 10 is integral with a vertical angle return 18 comprising a slot 19 in which is engaged a finger 20 which causes in the beginning of the rise of the plate 10 the rotation of a toothed wheel 21 causing rotation by the channe 22, the pinion 6 for controlling the axis 3.

 The distance between the axis 3 of the form support 7 and the plate 10 in the low position is such that a worker can, in the standing position, place the soles 13 in the recesses 12 of the cushion 11 and the rods 23 on the forms 8 and that the stroke of the plate 10 corresponds to the application under the desired pressure of the previously glued soles 13 on the first mounting 24 of the rods 23 mounted on the forms pivot down.

 The rotation of the machine by an angle equal to the angular difference between two contiguous workstations can be controlled by the worker whose work to be performed on a post is the longest, for example the first worker; it could also be automatically, after a stop of a predetermined duration.

Claims (6)

 1. Work station for the manufacture of footwear comprising a support for a pair of extendable heating forms, right foot and left foot of shoes of a determined size, characterized in that this support is pivotally mounted about an axis horizontal, so as to be able to occupy two positions, a high position in which the underside of the heating forms is directed upwards, to allow, when these forms are in a retracted position, to thread on them shoe uppers provided with their sole first, and a low position in which the underside of these forms is directed downward, for the establishment and bonding of the soles, this work station further comprising a press plate having two housings in which can be deposited and maintained in the desired position of the soles, right and left, for shoes of the same size as that of the aforementioned uppers, and a frame common to this support of heated forms antes and to this. press plate, which are arranged so that, when the support of the forms is in the low position, and the press plate is raised, the soles are applied very exactly, in the desired position, on the underside of the first soles rods mounted on these forms, and are pressed against them with the desired pressure.  2. Workstation according to claim 1 characterized in that it consists of a frame (2) in U whose branches are braced at their upper part at breast height by an axis (3) capable of pivoting d '' about 180 with the supports (7) of the heating forms (8), to pass from the high position to the low position, in that at the lower part of the chassis (2) is provided a plate (10) capable of be moved vertically, hydraulically or pneumatically, from a low position where it receives the previously glued temples (13) and a high position where it applies these soles against the first soles for mounting the rods (23) mounted on the previously brought forms in the low position.  3. Workstation according to claim 2 characterized in that on the plate (10) is disposed a press cushion (11) having recesses (12) whose dimensions correspond to the sizes of the soles (13) intended to be there deposited and maintained, and those of the rods (23) intended to be mounted on the heating forms (8).  4. Workstation according to claim 3 characterized in that the plate (10) is integral with a vertical angle return (18) provided with a slot (19) in which is engaged a finger (0), which , during the rise of the plate (10), causes the rotation of a toothed wheel (21) engaged with the drive chain (22) of the pinion (6) mounted at one end of the axis (3).  5. Workstation according to any one of the preceding claims, characterized in that the control of the plate (10) is adjusted so that its stroke corresponds to the application of the press cushion (11) against the first mounting (24) rods (23) turned downward opposite the plate with sufficient pressure to obtain good bonding.  6.Use of the work station according to any one of Claims 1 to 5 for the manufacture of footwear on a carousel machine comprising at least three such work stations suitably distributed at its periphery and stopping at less in three different angular positions characterized in that in the first of these three angular positions assigned to a size of footwear the heating forms are in the high position and in the retracted position and there are threaded rods of the same size provided with their first mounting base, in a second angular position, soles of the same size are placed in the slots provided for this purpose in the press plate of the work station and the forms support is pivoted to move it from its position high towards its low position, and lifting the press to apply and compress the soles against the first of the corresponding rods and stick them to it, and in the third angular position we lower the press plate, we rotate the shape support upwards, we pass the shapes from their extended position to their retracted position and we remove the articles footwear finished.