ES2204203B1 - AUTOMATIC MACHINE PERFECTED FOR THE ASSEMBLY OF THE CUTTING OF A FOOTWEAR ON ITS SIZE.-. - Google Patents

Abstract

Automatic machine perfected for the assembly of the cut of a shoe on its last; comprising a control panel or manual push-buttons that put into operation timers that regulate each of the movements of the machine, which has a main operating area comprising two supports of the last and a set of injectors of bonding material arranged in the perimeter of the base of the last. The injectors are framed by a set of external clamps that are hydraulically operated and that take and hold the shoe cut tightly; laterally and externally to the clamps are arranged two sliding base plates that press the area of the cut to be glued on the last and these plates are mounted in the front or lower part, two L-shaped pieces that move through hydraulic cylinders and acting on the last bridge area by pasting the cut in said area.

Description

Automatic machine perfected for assembly of the cut of a shoe on his last.

Object of the invention

The present invention aims at a automatic machine perfected for the assembly of the cut of a footwear on his last.

Background of the invention

Currently known machines of this type that carry out the corresponding operations by end of career, so that the adjustments of these limit switches are effect with the consequent loss of working time and difficulties of the corresponding adjustments.

All this negatively influences the productive performance and quality of the finished product that It is the footwear.

Description and practical example of the invention

With the machine of the invention it is possible to avoid  the aforementioned problems when the machine is equipped with electronic regulation elements consisting of timers that are easily regulated, and that with the minimum number of them all work operations are obtained necessary for mounting the cut on its last.

A practical example of realization, all as shown in the drawings attachments in which:

Figure 1 shows a plan view of the operative part of the machine of the invention in the position of repose.

Figure 2 shows a view similar to the figure 1 with the machine running.

Figure 3 shows a side view of the figure 2.

Figure 4 shows a front side view of The machine in operating position.

Figure 5 shows a detailed view of the constitution of each of the side plates acting on the positioning and fixing of the cut on the last.

Figure 6 shows a plan view of how the cut is fixed on the last.

Description of an embodiment of the invention

Machine 1 comprises two tubular columns concentric displaceable by means of hydraulic cylinders.

One of these columns, the exterior, ends superiorly in a body 2 of material injectors thermoplastic that is used to make the glue of the cut. Mouth of the injectors are coplanar and have a disposition regular.

The inner column tops off in a support 3 on which the last sits.

This support 3 is perfectly centered with with respect to the perimeter provision that presents the injectors

Lateral to the perimeter contour that define the injectors appear almost parallel a group 4 of tweezers consistent, each, in two pieces 5 and 6.

The outer part 6 of each of the clamps is rotating with respect to the interior on which it rests on ribs 7.

The clamps press the extreme zone 8 perimeter of the cut 9. The clamps are closed by hydraulic cylinders 10.

Each clamp has two hydraulic cylinders, one which performs the vertical movement and the other the movement side.

In the set of the tweezers it is necessary to indicate that the two facing side tweezers 20 arranged in the part lower are powered, each, by three hydraulic cylinders the two already mentioned, which present the other clamps, and a third that tuck the cut more in the area of the last bridge to Get a better paste.

To get the glue of the cut on the last two side plates 12 actuated by cylinders hydraulic 13 that move down while over these plates are mounted movable end pieces 14 in general form of "L" acting on the cut in the sides of zone 15 of the last bridge favoring the glued from the cut in this area.

The machine comprises at the top operative hooks to position a piece 16 that presents the shape of the toe and the corresponding part of the area of the sole of footwear. This piece adjusts and presses on the Cut by molding it.

In this area recently cited the machine is equipped with air pressure and liquid product outlets that lubricate the side plates over the cutting area avoiding with so that the hot side plates adhere to the cutting can break and / or crack.

The plates are heated by resistors electric.

In the previous operative part of the machine, mount and hold on the support 17 the back 18 of the last.

This support 17 faces another 18a that it is mounted on the back of the machine and it has as mission to press vertically on the instep part 19 of the last with what the last with these two points is perfectly positioned and machine centered.

To avoid lateral displacements of the last the machine has two side elements 20 facing each other hydraulically operated

Within the scope of the invention you can replace hydraulic drive cylinders with cylinders tires

Claims (2)

1. Automatic machine perfected for the assembly of the cut of a shoe on its last; characterized in that it comprises a control panel or manual push-buttons that put into operation timers that regulate each of the movements of the machine, which has a main operating area comprising two concentric tubular movable supports, one of which is the support of the last and the other exterior is the support of a set of injectors of bonding material arranged in the perimetral direction of the base of the last; the injectors are framed by a set of outer clamps that are hydraulically actuated and that take and hold the shoe cut tightly; laterally and externally to the clamps are arranged two movable base plates that press the area of the cut to be glued on the last and these plates are mounted on the front or lower part of the two "L" shaped pieces that move through cylinders hydraulic and acting on the area of the last bridge by gluing the cut in said area. 2. Machine according to claim 1 characterized in that a pressure piece is mounted on the back of the machine's operating area and on the side of the last, where the machine has liquid air nozzles lubricant that prevents the adhesion of the cut to the side plates that have previously been heated by means of electrical resistors; The last is supported on the front by a pressure element and on the sides by hydraulically operated parts or elements that center the last, complementing this positioning with a vertical element that presses the last and the cut in the area of the toe and instep .