RU1798373C - Device for cutting leather - Google Patents

Abstract

SUMMARY OF THE INVENTION: the device comprises a table with a longitudinal slot, a circular knife placed therein, mounted on a carriage under the table, spring-loaded pressure rollers placed on the table surface in the cutting zone and mounted on the bracket of the carriage, and a wedge placed on the bracket at the table level, moreover, the distance of the contact point of the pinch rollers with the material to the base is defined by the dependence: VDh - h2 -f KB, where D is the diameter of the circular knife; h is the height of the protruding part of the knife above the table surface; B is the width of the bracket at the wedge; K is a functional coefficient, depending on the coefficient of friction, the values of which are in the range of 1.05-1.89. 2 ill.

Description

The invention relates to equipment for the mechanical cutting of leathers, preferably into halves.

The aim of the invention is to improve the quality of cutting. ....

Fig. 1 is a kinematic diagram of a device; in FIG. 2 - the same side view.

The device for cutting leather contains a table 1, on the edge of which fixed clamps 2 are mounted, located symmetrically relative to the slot of the table 1, under which a carriage 3 is mounted, supporting the motor 4, on the shaft of which a circular knife 5 is mounted, located in the slot of the table 1, which are symmetrically located movable clamps made in the form of a pair of spring-loaded rollers 6 mounted above the table 1 on the bracket 7 mounted on the carriage 3.

The bracket 7 is provided with a means for removing the skin, made in the form of a wedge 8.

The device operates as follows: the skin is laid on the table 1 symmetrically with respect to the slot, while the carriage 3 is in the extreme position. The edge of the skin is fixed by clamps 2. After turning on the drive (not shown in the drawings), the carriage 3 communicates with translational movement. In this case, the rollers 6 run into the skin, fixing it in the cutting area of the disk knife 5. The cut skin interacting with the wedge 8 is pulled apart, which improves the conditions for cutting the skin and prevents the edges of the cut skin from getting into the target of table 1 under the influence of the crown -. Theine 7. At the end of the cut, the carriage 3 returns to its original position.

In the process of developing a knife, adjustment of the position of the working bodies of the device is not required, since when the parameters D decrease, the calculated value A decreases, which satisfies the Dependence.

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Forumula and Leather cutting device containing a table with a longitudinal slot, a knife and a clamping device in the form of rollers mounted on the carriage, perfect for moreover, in order to improve the quality of cutting, the rollers are located in the cutting zone, spring-loaded to the table plane and mounted on the bracket of the carriage, located above the table and carrying means for removing leather, made in the form of a wedge located at the level of the table on the bracket carriage with a circular knife placed under the table, and

the distance from the contact point of the pressure rollers with the material to the base of the wedge is determined by the dependence

 VDh -h2 + KB,

where D is the diameter of the circular knife;

h is the height of the protruding part of the knife above the table surface;

10 c - the width of the bracket at the wedge;

K is a functional coefficient, depending on the coefficient of friction, the values of which are in the range of 1.05-1.89.

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