SU919812A2 - Support apparatus to shears for strip cutting of sheet materials - Google Patents

Description

The invention relates to pressure metal processing, namely, to the construction of scissors for cutting sheet material into strips.

According to the main author. St. No. 821085, a support device for scissors is known for cutting sheet material into strips, comprising an inclined tray equipped with rotary stops successively mounted on the axes, a mechanism for sequentially setting the stops in working position, made in the form of a system of bodies and levers pivotally connected to each other, and as well as a drive for turning stops made in the form of a power cylinder [1].

A disadvantage of the known device is the inability to use it as a drive for cutting strips when changing filled containers to empty, which leads to forced downtime of the scissors, and the investigator · but, to reduce their productivity, work.

The purpose of the invention is to increase the performance of scissors.

The goal is achieved by the fact that in the supporting device to the scissors for cutting sheet material into strips, the last stop is equipped with an individual rotation drive.

In FIG. 1 shows a support device, a section; in FIG. 2 same, plan view.

The supporting device for scissors for cutting sheet material into strips contains an inclined tray 1, equipped with stops 2, 3 and 4, mounted in series with rotary relative to the horizontal axis, stops 2 and 3 are set in motion by means of a pneumatic cylinder 5 through a system of levers and rods 6, and the stop 4 using the pneumatic cylinder 7 through a system of levers and rods 8. The position and relationship of the stops provides their alternate interaction with the cut strip.

The device operates as follows. :

The sheet 9 is fed into the scissors and the strip 12 is cut off with the knives 10 and 11, which is supported by the upper stop 2. After the cutting cycle is completed, the stops 2, 3 and 4 are automatically rotated by the pneumatic cylinders 5 and 7, and the cut strip 12 slides from the stop 2 under its own weight on tray 1 to stop 3, which at this time becomes in the closed position. ^, Stop 3 stops the cut strip and further orientes it along its plane. When the stops 2, 3 and 4 are returned to their original position, the strip 12 along the tray 1 moves from the stop 3 to the stop 4, which once again stops orienting and keeps it in this position until the end of the next cutting cycle. In the next cutting cycle, emphasis 2 supports the newly cut strip. Then, when turning the emphasis 2, 3 and 4, the strip held by the emphasis 4 is dropped into the container GZ, and the newly cut strip slides to the emphasis 3, stops, orientates with it and, when the emphasis 2, 3 and 4 returns to their original position, will again be oriented by the emphasis 4 and held by it on the tray until the next cycle. When the container 13 is changed after it is filled, or when the grade of the material being cut is changed, the last stop 4 with the help of the pneumatic cylinder 7 is held in the Closed position and simultaneously performs the functions of the orienting stop and the storage stop. And the shutters 2 and 3 continue to work from the pneumatic cylinder 5 in the previous mode. After changing the packaging 13, the shutter 4 begins to work together with the shutters 2 and 3 and the strips 12 held by it until this moment are reset to the container 13.

Thus, the stops stopping the cut strip moving along the inclined tray one by one, and periodically, if it has managed to turn around on the tray at a small angle while moving from one damper to another, orient it along its plane. The displacement of the strip across the tray is insignificant and depends on the distance between the stops, which is determined by the necessary degree of accuracy of the orientation of the strip when laying in containers, and their dimensions. At the same time, its speed is also extinguished to zero, which reduces the bounces and disorientation of the 20 strip when packing it in a container. And with the bottom stop closed, the device can act as a drive for cut-off strips.

The use of the invention poses the possibility of improving the performance of the matrix when cutting sheet material into strips.

Claims (2)

The invention relates to the processing of metals by pressure, namely to the structures of scissors for cutting sheet material into strips. According to the main author. St. No. 821083 is known a supporting device for scissors for cutting sheet material of the backband, comprising an inclined tray, equipped with pivot stops installed on axes, a mechanism for sequential installation of pins into a working position, made in the form of a system of bodies and levers articulated with each other, as well as the drive rotation of the stops, made in the form of the power cylinder 1. A disadvantage of the known device is the impossibility of using it as an accumulator of cut strips when changing filled containers to empty ones, which leads to forced merely scissors and, consequently, to a decrease in productivity and operation. The purpose of the invention is to increase the productivity of the scissors. The goal is achieved by the fact that in the supporting device to the shears for cutting sheet material into strips the last emphasis is provided with an individual rotation drive. FIG. 1 shows a supporting device, a section; in fig. 2 same plan view. The supporting device to the shears for cutting sheet material into strips contains an inclined tray 1, fitted with successively installed pivots about the horizontal axis of the supports 2, 3, and. The stops 2 and 3 are set in motion with the help of the pneumatic cylinder 5 through a system of levers and 6 and 6, and the stop with the help of a pneumatic cylinder 7 through a system of levers and t g 8. Their position and interconnection ensure their 39 alternate interaction with the cut strip. The device works as follows. ; Sheet serves sheet 9 and knives 10 and 11 cut the strip 12, supported by the upper stop. 2. After the end of the cutting cycle, the stops 2, 3 and if are automatically turned by the pneumatic cylinders 5 and 7, and cut into lane 12 under the action of their own weight, it slides off the stop 2 along the tray 1 to the stop 3 which at this time becomes Zek-ryto. The stop 3 stops the cut strip and additionally orients it along its plane. When the stops 2, 3 return to their initial position, the strip 12 along the tray 1 moves from the stop 3 to the stop C, which again stops orienting it and maintains it in this position until the end of the next cutting cycle. During the next cutting cycle, the stop 2 supports the newly cut strip. Then, when turning the support 2, 3, the strip held by the stop 4 is dropped into the container 13, and the newly cut strip slides off to the stop 3, stops, orients them when the stops 2, 3 return to their original position again with the stop 4 and it is held on the tray until the next cycle. When changing the container 13 carried out after its filling, or when changing the grade of the material being cut, the last stop is held in the Closed position by means of the pneumatic cylinder 7 and simultaneously performs the functions of the orienting stop and the drive restraint. And the valves 2 and 3 continue to operate from the pneumatic cylinder 5 in the same mode. After 4 tare 13 changes, the flap 4 begins to work in conjunction with the flaps 2 and 3 and the strips 12 held by it up to this point are dropped into the tare 13. Thus, the stops alternately stop the cut strip moving along the inclined tray and periodically if it has turned on the tray at a small angle when moving from one flap to another, orient it along its plane. The displacement of the strip across the tray is insignificant and depends on the distance between the stops, which is determined by the necessary degree of accuracy of orientation of the strip when placed in the container, and their dimensions. At the same time, it quenches down to zero and its speed, which reduces rebounds and deorientation of the strip when laying it in a container. And with the bottom stop closed, the device can work as a drive for cut-off bands. The use of the invention allows to increase the performance of the matrix when cutting sheet material into strips. Claims of the Invention A supporting device for scissors for cutting sheet material into strips according to ed. St. No. 821085, which means that, in order to increase the productivity of the scissors, the last emphasis is provided with an individual rotational drive. Sources of information taken into account during the examination 1. USSR author's certificate No. 821085, cl. B 23 D 33/02, 12.19.78.