SU84335A1 - Passing machine for leather rolling - Google Patents

Description

Rolling-type rolling machines using work rolls and spreading rolls are well known. The disadvantage of these machines is the production of leather with uneven rolling in some places.

In the described machine, this disadvantage is eliminated as a result of the fact that the length of the work rolls is less than the width of the leather to be treated, and the rolls are arranged in a sequential and stepwise fashion so that the first pair of rolls rolls the middle part of the skin and the rest of the skin .

FIG. 1 shows a side view of the machine; in fig. 2 - top view of it.

The pass-through machine for rolling leather consists of front and rear tables 1 and 2 mounted on a frame, equipped with a spring 3 of a pressure upper front rolling roll 4, a supporting lower front rolling roll 5, a pressure upper back and middle rolling rolls 6 and 7, and a bottom lower rolling roll and the average rolls S and 5 and raspravochny rolls 10, 11 and 12.

The length of the pressure rolls 4, b and 7 and the support rolls 5, cS and 9 are less than the width of the treated leather 13 and the rolls are arranged sequentially and in steps; The first pair of rollers 4 and 5 rolls through the middle part of the skin 13, and the subsequent pairs of rolls 6.7, 8 9 roll the other parts of the skin along its width.

In order to obtain the effect of skin horse, the upper pressure and lower support rolls rotate at different peripheral speeds, while the speed of the lower rolls is less than the speed of the upper rolls. For straightening the treated leathers, between the upper pressure rolls 4, 6 and 7, rotary cutter knives or corrugated spreading rollers 10, 11 and 12 are mounted.

The length of the front lower support roll 5 is approximately equal to the width of the rolled leather 13.

The pressing rolls 4, 6 and 7 have a slightly smaller diameter along the edges than in the middle, which provides simultaneously rolling and raspravochny effect; to ensure proper rolling of the leathers, the pressing rolls are pressed against the lower support rolls by springs.

X2 84335-2. During processing, leather 13 is laid on the front table 1 and is filled between the front pair of rolling rolls 4 and 5, which grab and nrokatyvanat it in the middle in the area corresponding to the length of the roll, 4; then the skin is captured by the middle pairs of rolls and then the rear ones, which perform the same operation, but in areas where the euie is not processed by the front pairs. Pass through all the pairs of rolling rolls, the leather comes out of the magnet on the table 2 rolled over the entire area.

Subject invention

Claims (5)

1. A pass-type machine for rolling leathers, of Vol. 1 and in particular. that the length of its pressure and supporting work rolls is less than the width of the leather to be processed, and they are arranged sequentially and stepwise in such a way that the first pair rolled the middle part of the skin, and the subsequent ones rolled the other parts of the skin along. LH width. 2. The form of execution of the machine according to claim 1, characterized in that, in order to obtain a gloss effect, the circumferential speed of the upper pressure rolls is greater than the speed of the lower support rolls. 3. The form of the machine according to claim 1, characterized in that between the upper work rolls, in the course of the skin feed, rotating knife or corrugated rolls are mounted. 4. The form of the machine according to claim 1, from the point that the length of the front lower support roll is made approximately equal to the width of the rolled leather. 5. The form of execution of the machine according to claim 1, characterized in that the pressure rolls have a slightly smaller diameter along the edges than in the middle, in order to provide simultaneously rolling and roll-off action.