CS266997B1 - The device is not a spatial opening of the shoe upper - Google Patents

Abstract

The solution is to improve the device for spatial shaping of the instep of the shoe upper in order to achieve the required shape and size of the part without additional cutting. The essence of the solution is that a recess is created on the shaping inserts of the sidewalls for the rear part of the shaped instep of the upper. The device can be used for shaping shoemaking or haberdashery parts.

Description

The invention relates to a device for spatially shaping the top of a shoe upper, consisting of.

consisting of the upper jaw, the clamping brackets and the lower jaw with shaping plates and sidewalls, controlled by pressure rollers.

In order to achieve the spatial shape required for the production and wearing of the shoe, some parts of the leather upper of the shoe are preformed. The most deformed part of the upper is the instep, which has the most complex shape of all parts of the upper. In order to improve the possibility of production and thus to achieve the required comfort when wearing shoes, various constructions are proposed for this part of the upper, especially in terms of division into several parts. The individual parts are joined, most often by stitching, and form a head, which is further joined to any parts of the upper or shin. The division of the instep is disadvantageous from the point of view of the laboriousness of joining as well as from the point of view of modeling, as the creation of the pattern itself must take it into account. For this reason, the construction of an undivided nipple has recently been applied, which is preformed before being joined to other parts of the upper. This preforming is generally carried out on forming devices, possibly also under the action of heat or even moisture, while the spatial deformation of the nipple occurs. The leather head changes its size and shape during shaping due to permanent deformation. Therefore, after shaping, the head must be additionally cut to the required dimension. The improvement is achieved by the construction of the basic pattern of the nipple, where the influence of axial and transverse deformation during shaping is taken into account when cutting out its original shape. The back side of the instep remains a problem, the shape and size of which must be precise due to the connection with the heel part of the upper. These are additionally cut out with the existing technologies, which is uneconomical from the point of view of footwear production.

This disadvantage is eliminated by the device for spatially shaping the instep according to the invention, the essence of which consists in that a recess is formed on the shaping inserts for the rear part of the molded top of the upper.

The technical effect consists in ensuring the required preforming of the head part while maintaining the required size and shape of any sides of this part. This eliminates the additional punching operation.

An exemplary embodiment of a device according to the invention is shown in the accompanying drawings, in which FIG. 1 is a front view of the device, FIG. 2 is a side view of the device, FIG. 3 is a front view of a shaping insert with a recess for the rear part of the molded nozzle, FIG. 4 is a section A-A of the shaping insert according to FIG. 3.. .

The device consists of an upper jaw Z connected to a frame (not shown), clamping brackets 2 mounted on the upper piston rods 10 of the two upper linear motors 11 of the lower jaw 9 mounted on the lower pistons 11 of the two lower linear motors j) and sidewalls 5 mounted by a pin 13 on the piston rod 12. of the pressure cylinder 6. Holding inserts 3, preferably made of Teflon, are attached to the clamping brackets 2. Attached to the sidewalls 5 are shaping inserts Z < ⁱⁿ which a recess y is formed for the rear part of the molded upper of the upper. The shaping inserts 7 are preferably also made of Teflon. .

The operation of the device is as follows. The shaped upper head is inserted between the upper jaw Z ^{and the} lower jaw 9 and the headquarters is such that its rear sides, further intended for connection to the heel or shin part of the upper, are at the level of the recess y in the shaping inserts Z- they are extended by the lower piston rods 11, whereby the lower jaw S1 slides towards the upper jaw 11 and fixes the shaped head of the upper. In the next phase, by the action of the upper rectilinear motors 11, the clamping brackets 2 are moved downwards until their holding inserts 2 abut on the molded head and hold it during shaping. The shaping itself is carried out by moving the sides 5 with the shaping inserts Z upwards. The rear of the shaped instep protrudes into the shaping yl liners ^and - ^{e e} d formed. The rear sides of the instep thus retain their original size and shape. The procedure for releasing the molded instep is as follows. By the action of the pressure cylinder 6, the sidewalls 5 with the shaping inserts Z are lowered to the initial position. Upper lines

CS 266 997 B1 motors .1 raise the clamping brackets 2 with retaining inserts The lower straight motors pull it down the lower jaw 9, whereby the shaped nipple is released and can be removed from the device. The duty cycle can be repeated again.

Claims (2)

OBJECT OF THE INVENTION Device for spatial shaping of a shoe upper, consisting of an upper jaw and clamping brackets operated by linear motors, a lower jaw with a pressure cylinder and sidewalls with shaping inserts controlled by linear motors, characterized in that a recess (v) is formed on the shaping inserts (7). for the rear part of the shaped upper of the upper.