SU863334A1

SU863334A1 - Paper-cutting device to wrapping machines

Info

Publication number: SU863334A1
Application number: SU802869877A
Authority: SU
Inventors: Юрий Григорьевич Сухенко; Георгий Александрович Прейс; Петр Павлович Крайнев
Original assignee: Киевский Технологический Институт Пищевой Промышленности
Priority date: 1980-01-16
Filing date: 1980-01-16
Publication date: 1981-09-15

Description

(54) УСТЮЙСТВО ДЛЯ РЕЗКИ БУМАГИ К ЗАВЕРТОЧНЫМ МАШИНАМ(54) APPARATUS FOR CUTTING PAPER TO WELDING MACHINES

II

Изобретение относитс к заверточным машинам , а более конкретно - к бумагорежущим узлам заверточных машин, предназначенным дл разрезани непрерывно движущихс оберточных материалов и может быть применено, главным образом, в пищевой промышленности, а также в других отрасл х народного хоз йства .The invention relates to wrapping machines, and more specifically to paper-cutting units of wrapping machines for cutting continuously moving wrapping materials and can be used mainly in the food industry, as well as in other sectors of the national economy.

Известно устройство дл резки бумаги к заверточным машинам, содержаи(ее корпус, планку с неподвижным ножом, выполненную клиновидной по длине, вал с подвижным ножом , имеющий наклонный лаз дл симметричного относкгельного уклона режущих кромок ножей, и регулнровочные элементы, соединенные с планкой 1.A device for cutting paper to wrapping machines is known, containing (its body, a bar with a fixed knife, made wedge-shaped in length, a shaft with a movable knife, having an inclined hole for a symmetrical relative inclination of the cutting edges of the blades, and adjustment elements connected to the bar 1.

Недостатком известного устройства вл етс то, что по мере износа ножей планку с неподвнжным ножом сближают с подвижным ножрм, в результате чего мен етс место контакта трущихс поверхностей режущих кромок , о приводит к повторной приработке контактирующих режущих кромок. Это происходит в результате того, что планку с неПОДВИЖНЫМ ножом регулируют в горизонтальной плоскости, что приводит к изменению угла встречи режущих кромок, который образован между линией, св зывающей точку контакта кромок с центром оси вращени подвижного ножа и горизонтальной плоскостью. Причем , в период приработки интенсивность износа увеличиваетс , а за период стойкости ножей бывает несколько их сближений, что приводит к нескольким повторным приработкам.A disadvantage of the known device is that as the knives are worn, the bar with the unattached knife is brought closer to the movable knife, as a result of which the place of contact between the rubbing surfaces of the cutting edges changes, and this leads to the repeated running-in of the contact cutting edges. This is due to the fact that the bar with the STANDING knife is adjusted in the horizontal plane, which leads to a change in the angle of incidence of the cutting edges, which is formed between the line connecting the point of contact of the edges with the center of rotation axis of the movable knife and the horizontal plane. Moreover, during the period of running-in, the intensity of wear increases, and during the period of resistance of the knives there are several convergences, which leads to several repeated running-ins.

toto

Цель изобретени - увеличение долговечности ножей путем сохранени посто нного места их приработки.The purpose of the invention is to increase the durability of knives by maintaining a constant place of their burn-in.

Поставленна цель достигаетс тем, что в The goal is achieved by the fact that

Claims

An IS device for cutting paper to wrapping masks, comprising a body, a fixed-blade bar, made wedge-shaped in length, a shaft with a movable knife, having an inclined groove for a symmetrical relative inclination of the cutting edges of the blades, and adjustment elements connected to the bar, a bar with a fixed the knife is installed in the housing obliquely in the direction normal to the surface formed by the shaft with the movable knife at the point of contact of the knives. In addition, the fixed knife has four cutting edges. Also, the movable iozh has two cutting edges. FIG. 1 shows the device, a general view; in fig. 2 is a section A-A in FIG. one; in fig. 3 - diagram of the contact of the knives. The device comprises a housing 1 with straight holes, in which a plan ka 2 is placed, wedge-shaped in length, with a fixed knife 3, a shaft 4 with a movable knife 5, and adjusting elements 6 (bolts) connected to the bar 2. Shank 2 fixed knife 3 is installed in the housing 1. obliquely in the direction of the normal e "b (Fig. 3), on the tangent ta to the surface formed by the shaft with the movable knife 5, at the point of contact of the knives. The bar is wedge-shaped in length, and there is an inclined groove in the shaft for a symmetrical relative inclination of the cutting edges of the blades. The plate has holes in which the spiral springs 7 are inserted and fastened to the body with bolts, and a guide comb 8 is attached to it with screws. The device works as follows. The wrapping paper is continuously fed along the guide comb 8 and falls between the cutting edges of the fixed 3 and movable 5 knives and is cut as it progresses. In one revolution of the shaft 4, the paper is cut to the length of the label. The gap between the fixed and movable blades is adjusted by bolts 6. If during cutting the knives the cutting edges overlap, then the spiral springs 7 compensate for this overlap and eliminate the instantaneous break of the cutting edges. The inclined position of the fixed knife bar minimizes the wear of the knives, since the place of running-in of the cutting edges remains constant during adjustment. This is also due to the fact that the fixed knife is four-edged and movable by two-edging, which increases the durability of one and the other knife in two times. The durability of knives in comparison with the known devices has increased by 2 ... b times, depending on the type of material used for making of leather. Claim 1. Device for cutting paper to wrapping maschines, comprising a housing, a fixed knife bar, made wedge-shaped in length, a movable knife shaft, having an inclined groove for a symmetrical relative inclination of the knife cutting edges, and adjustment elements connected to the bar, characterized by By the fact that, in order to increase the durability of the knives by maintaining a constant place of their burn-in, the bar with a fixed knife is installed in the housing obliquely in the direction normal to the surface formed by the shaft m with the movable knife at the point of contact blades.

2. The device under item 1, about t l nch and y it with the fact that the motionless knife has four cutting edges.

3. The device according to claim 1, characterized in that the movable knife has two cutting edges. Sources of information taken into account in the examination 1. Copyright certificate of the USSR N 420446, cl. B 26 D 1/38, 1972.