Device to be applied to shoe assembling machines for spreading apart the edge portion of the box-like sole shoes

Abstract

 There is disclosed a mechanical device to be applied to machines for assembling shoes provided with box-like soles and adapted for automatically introduc­ing into the sole the upper mounted on the shoe tree.
The device essentially comprises a vertically movable plate (1) on the top face of which there is formed the impression of a sole (3) and therewith a first pair of opposite section members (4) to engage the sole in the impression and a second pair of opposite section members (5) bearing a plurality of perimetrical downwardly extending lugs (6) cooperate,the lugs being provided for insertion into the shoe sole edge to spread apart it.

Description

BACKGROUND OF THE INVENTION

[0001] The present invention relates to a mechanical device to be applied to machines for assembling box-­like sole shoes and adapted for spreading apart the edge portion of the shoe edge.

[0002] As is known, there are presently available on the market shoes processing machines which are able of automatically assembling the parts of box-like sole shoes;such a mchine,for example,is fully disclosed and illustrated in the copending italian patent application 20,892 A/83 filed on May 2,1983 in the name of the same Applicant.

[0003] These machines essentially comprise a movable arm, bearing a shoe tree thereon the shoe upper,inner sole and box-like sole are mounted.

[0004] The mounting operation of the mentioned shoe parts, on the other hand,is presently carried out in a manual way and is a comparatively difficult operation since the profile of the sole edge substantially reproduces the perimetrical outline of the upper,encompassing the shoe tree.

[0005] Thus,for coupling the above mentioned shoe parts a lot of labour is required for properly manually superimposing the shoe sole edge on the perimetrical portions of the shoe upper.

[0006] The assembling operation,moreover is made more difficult because of the fact that,on the upper edge to be inserted into the sole,and on the correspond­ing edge of said sole,there is applied an adhesive layer,with a further step which causes the cost of the finished shoe to greatly increase.

[0007] It should moreover be pointed out that the above disclosed shoe assembling method does not afford the possibility of fully exploiting the capabilities of the shoe making machines.

SUMMARY OF THE INVENTION

[0008] Accordingly, the main object of the present invention is to overcome the above mentioned drawback, by providing such a mechanical device, to be applied to machines for assembling box-like sole shoes,which affords the possibility of automatically assembling the shoe soles and uppers.

[0009] Another object of the present invention is to provide such a mechanical device to be applied to machines for assembling box-like sole shoes which is effective to greatly increase the shoe making machines production rate.

[0010] Yet another object of the present invention is to provide a mechanical device to be applied to machines for assembling box-like sole shoes which is construction-wise very simple and reliable.

[0011] According to one aspect of the present invention, the above objects,as well as yet other objects which will become more apparent thereinafter,are achieved by a mechanical device,to be applied to machines for assembling box-like sole shoes characterized in that it essentially comprises a vertically movable plate on the top face of which there is formed the impression of a sole and therewith a first pair of opposite section members,adapted for engaging the sole in said impression,and a second pair of opposite section members, bearing a plurality of downwardly extending lugs, cooperate,said lugs being provided for insertion into the edge of said sole to spread apart its edge.

BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Further characteristics and advantages of the mechanical device to be applied to machines for assembl­ing and box-like sole shoes according to the present invention will become more apparent thereinafter from the following detailed description of a preferred embodiment of the device,which is illustrated by way of a not limitative example in the figures of the accompanying drawings,where:

fig.1 is a perspective view illustrating the plate in which the shoe sole impression is formed, with the movable section member adjoining pairs;

fig.2 illustrates the same plate with a shoe sole engaged in the impression;

fig.3 illustrates the spreading apart operation carried out by the top section member pair on the sole edge;

fig.4 illustrates in a schematic manner the step for automatically inserting the tree arranged shoe upper into the related sole;
and

fig.5 illustrates a box-like sole shoe in a completely assembled condition.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] With reference to the figures of the accompanying drawings,the mechanical device according to the present invention comprises a substantially rectangular elongated plate 1,arranged in a horizontal plane and mounted on one or more double acting lower cylinders,having vertical axes and not specifically shown.

[0014] On the plate 1 there is defined the impression or "print" of a box-like shoe sole 3,which is arranged near a first pair of opposite section members 4 adapted for parallely moving and which longitudinally reproduce the outline of the sole.

[0015] Above said first section member pair there is provided a further opposite section member pair (5), which are also movable in the horizontal plane,and bear a plurality of downwardly extending lugs 6.

[0016] The mentioned opposite section members are preferably formed in two adjoining mutually movable portions.

[0017] This displacement is carried out by a corresponding pairs of double acting cylinders,respectively indicated at 7 for the upper section members and 8 for the lower section members,or by other driving equivalent means.

[0018] The subject device operates as follows:

[0019] the operator inserts the box-like sole into the impression or seat formed on the top face of the plate 1,and the plate is downwardly displaced while the opposite section members pair are moved toward one another,depending on the sole outline,so as to engage the inner portion of the sole edge 9 with the lugs of the top section member pairs,as the plate is returned to its starting position.

[0020] Then the above mentioned top section member pairs are moved away,as shown in fig.3,thereby spreading apart the edge 9 of said sole.

[0021] Thus the sole will be ready for receiving the shoe upper 10,arranged on the tree,indicated at 11, provided at the bottom of a movable arm 12 adapted to be translated and rotated with respect to a horizontal axis.

[0022] In this connection it should be pointed out that the separation stroke of the slanted lug (6) bear­ing section members,for spreading apart the shoe sole edge 9,is suitably restrained depending on the sole size and,possibly,on the height of the edge of said sole.

[0023] More specifically that stroke is restrained, preferably,by further double acting cylinder pairs 13, the displacement of the rods of which is preset depending on the above mentioned parameters.

[0024] Moreover at the bottom end of stroke position of the shoe tree,two "flashes" will be provided for activating the adhesive material preliminarily applied to the soles and uppers,before the coupling step.

[0025] While the invention has been disclosed with refe­rence to a preferred embodiment thereof,it should be apparent that it is susceptible to many modifications and variations within its scope.

Claims

1- A mechanical device,to be applied to machines for assembling a box-like sole shoes,characterized in that it essentially comprises a vertically movable plate on the top face of which there is formed the impression of a sole and therewith a first pair of opposite section members,adapted for engaging the sole in said impression,and a second pair of opposite section members,bearing a plurality of downwardly extending lugs,cooperate,said lugs being provided for insertion into the edge of said sole to spread apart its edge.

2- A mechanical device,according to the preceding claims,characterized in that said plate is of substantial­ly rectangular elongated shape,is arranged in a horizontal plane and is mounted on one or more vertical axis lower double acting cylinders,said plate bearing the impression of a box-like sole and being arranged near a first pair of opposite section members adapted for parallely moving in their plane and longitudinally reproducing the outline of said sole.

3- A mechanical device,according to the preceding claims, characterized in that above said first pair of section members there is provided a second pair of opposite section members,also movable in the horizontal plane and bearing a plurality of downwardly extending lugs, said opposite section members being formed at two adjoining portions effective to be displaced in a timed way.

4- A mechanical device, according to one or more of the preceding claims,characterized in that the displacement of said opposite section member pairs is carried out by corresponding double effect cylinder pairs,or the like driving means,respectively acting on the top and bottom section members.

5- A mechanical device,according to one or more of the preceding claims,characterized in that the separating stroke of said lug bearing section members,for spread­ing apart the edge of the sole,is restrained,depending on said sole size,and said sole edge height,by further double acting cylinder pairs the displacement of the rods of which is suitably preset.

6- A mechanical device,according to one or more of the preceding claims,characterized in that at the lower end of stroke position of said shoe tree two flash assemblies are provided for activating the adhesive material on said soles and uppers.

7- A mechanical device,to be applied to machines for assembling box-like sole shoes,according to the preceding claims and substantially as broadly disclos­ed and illustrated in the preceding disclosure and figures of the accompanying drawings,which form an integrating portion of the subject patent Application.

Drawing