SU1276405A1

SU1276405A1 - Cylindrical shears for lateral cutting of long material

Info

Publication number: SU1276405A1
Application number: SU853905710A
Authority: SU
Inventors: Игорь Дмитриевич Костогрызов; Альфия Хазгалеевна Сафина; Борис Иванович Воронин; Марина Борисовна Русакова
Original assignee: Всесоюзный научно-исследовательский институт метизной промышленности
Priority date: 1985-05-30
Filing date: 1985-05-30
Publication date: 1986-12-15

Abstract

Изобретение позвол ет повысить надежность ножниц в работе. Вращающиес подающие ролики 9 транспортируют разрезаемую проволоку в проводку 4, кинематически жестко св занную с ножом 2, которому соосно входное отверстие 7. Проволока через выходное отверстие 8 поступает к ножам 1 и 2, расположенным неподвижно относительно друг друга. Периодичность реза обеспечена вращением проводки 4 вокруг оси 3. Проводка 4 снабжена шкивом 6, соединенным с приводом вращени . 1 з.п. Ь-лы. 2 ил. (Л с N5 4j О) 4; О СП фиг.1The invention allows to increase the reliability of scissors in operation. The rotating feed rollers 9 transport the wire to be cut into the wiring 4, which is kinematically rigidly connected to the knife 2, to which the inlet 7 is aligned. The wire goes through the outlet 8 to the knives 1 and 2, which are fixed relative to each other. The periodicity of the cut is provided by rotating the wiring 4 around the axis 3. The wiring 4 is provided with a pulley 6 connected to the rotational drive. 1 hp B-ly. 2 Il. (L with N5 4j O) 4; About SP figure 1

Description

Изобретение относится к обработке металлов давлением, в частности к устройствам для поперечной порезки длинномерных изделий, преимущественно проволоки.The invention relates to the processing of metals by pressure, in particular to devices for the transverse cutting of long products, mainly wire.

Цель изобретения - повышение надежности ножниц.The purpose of the invention is to increase the reliability of scissors.

На фиг.1 представлена кинематическая схема ножниц; на фиг.2 - разрез А-А на фиг.1.Figure 1 presents the kinematic diagram of the scissors; figure 2 is a section aa in figure 1.

В предлагаемых ножницах дисковые ножи 1 и 2 установлены так, что их оси параллельны, а боковые поверхности размещаются в одной плоскости, т.е. касается друг друга. При этом расстояние между их осями выбрано таким, что ножи перекрываются. Ось 3 ножа 2 связана с приводом вращения. Проводка 4, представляющая собой, например, изогнутую трубку, установлена с возможностью вращения в подшипниках 5 и снабжена шкивом 6, соединяемым с приводом вращения. Входное отверстие 7 проводки 4 соосно ножу 2, а ее выходное отверстие 8 параллельно оси этого ножа. При этом ось выходного отверстия 8 отстоит от оси входного отверстия 7 на расстоянии, примерно равном радиусу рабочей цилиндрической поверхности ножа 2. Ножницы снабжены подающими роликами 9, имеющими привод вращения и установленными таким образом, что линия их взаимного контакта пересекает ось входного отверстия 7 проводки 4.In the proposed scissors, the disk knives 1 and 2 are mounted so that their axes are parallel and the side surfaces are placed in the same plane, i.e. touching each other. Moreover, the distance between their axes is chosen so that the knives overlap. The axis 3 of the knife 2 is connected with a rotation drive. The wiring 4, which is, for example, a curved tube, is mounted for rotation in bearings 5 and is equipped with a pulley 6 connected to a rotation drive. The inlet 7 of the wiring 4 is aligned with the knife 2, and its outlet 8 is parallel to the axis of this knife. The axis of the outlet 8 is spaced from the axis of the inlet 7 at a distance approximately equal to the radius of the working cylindrical surface of the knife 2. The scissors are equipped with feed rollers 9 having a rotation drive and installed so that the line of their mutual contact intersects the axis of the inlet 7 of the wiring 4 .

Ножницы работают следующим образом.Scissors work as follows.

Вращающиеся подающие ролики 9 транспортируют разрезаемую проволоку в проводку 4 через ее входное отверстие 7. В проводке проволока изгибается благодаря своей упругости и поступает через выходное отверстие 8 к дисковым ножам 1 и 2. Проводка 4 вращается вокруг оси входного отверстия в направлении вращения соосного ножа 2 и периодически подводит проволоку, выходящую через отверстие 8 к месту реза дисковыми ножами 1 и 2. Длина отрезаемого куска проволоки равна расстоянию, которое проволока проходит за время одного оборота проводки 4 и определяется отношением скоростей вращения подающих роликов 9 и проводки 4. Поэтому привода проводки 4 и роликов 9 должны быть связаны между собой электрически или механически, причем эта связь должна быть регулируемой для изменения длины отрезаемых кусков проволоки. Скорость вращения ножей 1 и 2 на длину реза не влияет и для нормальной работы ножниц должна быть больше скорости вращения проводки 4. В связи с этим желательно выполнение выходного отверстия проводки 4 по ширине, равной половине длины перекрытия ножзй 1 и 2 (фиг.2). Это обеспечивает свободное перемещение проволоки относительно проводки 4 в направлении вращения ножей в момент осуществления реза. На этих ножницах можно резать не только одну проволоку, но и еще η проволок.Rotating feed rollers 9 transport the cut wire into the wiring 4 through its inlet 7. In the wiring, the wire bends due to its elasticity and enters through the outlet 8 to the disk knives 1 and 2. The wiring 4 rotates around the axis of the inlet in the direction of rotation of the coaxial knife 2 and periodically leads the wire exiting through the hole 8 to the place of cut with circular knives 1 and 2. The length of the cut piece of wire is equal to the distance that the wire travels during one revolution of wiring 4 and is determined I am the ratio of the rotational speeds of the feed rollers 9 and wiring 4. Therefore, the drive wiring 4 and the rollers 9 must be connected electrically or mechanically, and this connection must be adjustable to change the length of the cut pieces of wire. The speed of rotation of the knives 1 and 2 does not affect the length of the cut and for normal operation of the scissors should be greater than the speed of rotation of the wiring 4. In this regard, it is desirable to make the outlet of the wiring 4 in width equal to half the length of the overlap of the knives 1 and 2 (figure 2) . This ensures free movement of the wire relative to the wiring 4 in the direction of rotation of the knives at the time of cutting. On these scissors it is possible to cut not only one wire, but also η wires.

Следует отметить, что нож 1 в предлагаемой схеме приводится во вращение за счет трения о нож 2 и разрезаемый металл. В общем же случае возможно его вращение за счет кинематической связи с ножом 2. Проводка 4 может быть связана жесткой кинематической связью с ножом 2 и приводиться от одного с ним привода. Это способст: вует упрощению устройства.It should be noted that the knife 1 in the proposed scheme is driven by friction against the knife 2 and the metal being cut. In the general case, its rotation is possible due to the kinematic connection with the knife 2. The wiring 4 can be connected by a rigid kinematic connection with the knife 2 and be driven from the same drive. This helps simplify the device.

В предлагаемом изобретении повышена надежность работы ножниц, за счет · того»что ножи расположены неподвижно относительно друг друга, а периодичность реза обеспечена -вращением проводки. Это же создает благоприятные условия работы ножей и устраняетвозможность скола их кромок. В то же время отсутствует зависимость скорости резания от длины отрезаемых кусков. В этом заключается основное преимущество предлагаемых по сравнению с известными ножницами для резки проволоки на мелкие отрезки - фибру для бетона.In the present invention, the reliability of the scissors is increased due to the fact that the knives are stationary relative to each other, and the periodicity of the cut is provided by rotation of the wiring. This also creates favorable working conditions for knives and eliminates the possibility of chipping their edges. At the same time, there is no dependence of the cutting speed on the length of the cut pieces. This is the main advantage offered in comparison with the well-known scissors for cutting wire into small segments - fiber for concrete.

Claims

The invention relates to the processing of metals by pressure, in particular to devices for the transverse cutting of long articles, preferably wires. The purpose of the invention is to increase the reliability of scissors. Figure 1 shows the kinematic scheme of the scissors; figure 2 - section aa in figure 1. In the proposed scissors, the circular knives 1 and 2 are mounted so that their axes are parallel and the side surfaces are located in the same plane, i.e. concerns each other. In this case, the distance between their axes is chosen so that the knives overlap. The axis 3 of the knife 2 is coupled to a rotating drive. A harness 4, which is, for example, a curved tube, is rotatably mounted in bearings 5 and is provided with a pulley 6 which is driven to rotate. The inlet 7 of the wiring 4 coaxially with the knife 2, and its outlet 8 parallel to the axis of this knife. At the same time, the axis of the outlet opening 8 is separated from the axis of the entrance opening 7 at a distance approximately equal to the radius of the p & barrel cylindrical surface of the knife 2. The scissors are equipped with feed rollers 9 having a rotational drive and installed in such a way that the line of their mutual contact intersects the axis of the entrance holes 7 wiring 4. Scissors work as follows. The rotating feed rollers 9 transport the wire to be cut into the wiring 4 through its entrance from the version 7. In the wiring, the wire is bent due to its elasticity and flows through the outlet opening B to the disk blades 1 and 2. The wiring 4 rotates around the axis of the input bore in the direction of rotation coaxially knife 2 and periodically leads the wire through hole 8 to the cutting place with disk knives 1 and 2. The length of the cut wire is equal to the distance that the wire passes during one turn of the wire 4 and is determined speed ratio of rotation of feed rollers 9 and the drive wiring 4. Therefore vodka about 4 and rollers 9 must be Zail communication between an electrically or mechanically, and this bond must be adjustable to vary the length of the cut pieces of wire. The speed of rotation of the knives 1 and 2 does not affect the length of the cut, and for normal operation of the shears should be greater than the speed of rotation of the wiring 4. Therefore, it is desirable that the wiring outlet 4 be equal in width to half the overlap length of the scissors 1 and 2 (Fig. 2). This allows the wire to move freely relative to the wiring 4 in the direction of rotation of the knives at the time of the cut. Not only one wire can be cut on these scissors, but also n wires. It should be noted that the knife 1 in the proposed scheme is brought into rotation due to friction against the knife 2 and the metal being cut. In the general case, it is possible to rotate due to the kinematic connection with the knife 2. The wiring 4 can be connected with a rigid kinematic connection with the knife 2 and be driven from the same drive. This helps simplify the device. In the present invention, the reliability of operation of the scissors is increased, due to the fact that the knives are stationary relative to each other, and the periodicity of the cut is ensured by rotation of the wiring. This also creates favorable conditions for the operation of knives and eliminates the possibility of chipping their edges. At the same time, the cutting speed does not depend on the length of the cut pieces. This is the main advantage of the proposed in comparison with the known scissors for cutting the wire into small pieces - concrete fiber. Claim 1. Disc shears for cross cutting of lengthy material, mainly wires, containing two drive circular knives and wiring for the material being cut, characterized in that, in order to increase the reliability of the scissors, the axes of the circular knives are parallel to each other, the wiring is driven and installed rotatably around the axis of one of the knives and placed so that its input part is coaxial with the axis of this knife, and the output part is at its generator.

2. Scissors pop. 1, characterized by the fact that the wiring is kinematically connected with the knife, to which its entrance is attached.