SU870018A1 - Apparatus for cross cutting of strip rolled stock - Google Patents

Description

The invention relates to the processing of metals by pressure, in particular to equipment for cutting, and can be used in the transverse lines of strips of non-magnetic electrically conductive alloys. ^s

A device for the transverse cutting of strip products, comprising flying shears, an accelerating conveyor, installed in them and including driving transport-’® belts, and a cut sensor [Ί}.

The disadvantage of this device is that when processing flat products with high demands on surface quality, dispersing ¹⁵ conveyors cause defects (scores, scratches, etc.) on the surface of the cut sheets due to the difference in speed between the flying scissors and the conveyor.

The invention aims to decrease ² ® shenie surface defects applied to the cut sheet conveyor when dispersing transportirov2 ke from flying shears with a speed exceeding the feed rate to the strip cutting.

This goal is achieved by the fact that the device is equipped with flat linear motors located under the conveyor belts in a section whose length from the scissors axis is not less than the length of the cut sheet, and a power source connected to the nickname, and the cut sensor is connected to the power source.

Figure 1 shows a General view of the device for the transverse cutting of strip products; in FIG. 2 - the same, general view of the device in plan; in Fig. 3 is a diagram of the inclusion of linear motors on a running magnetic field during transportation of the cut sheet and feeding the front end of the strip; figure 4 th diagram of the inclusion of linear motors on a running magnetic field at the time of cutting the sheet; Fig. 5 is a diagram of switching off linear motors at the time of lowering the sheet onto the conveyor; Fig. 6 is a diagram of switching linear motors on to a pulsating magnetic field when a strip is fed} in Fig. 7 the forces acting on the cut sheet while the linear motor is running magnetic field) in Fig. 8 shows the forces acting on the cut sheet with the linear motor switched on and a pulsating magnetic field} in Fig. 9 a diagram for connecting linear motors to a power source.

The device comprises flying scissors 1, an accelerating conveyor 2, mounted on them and including driving transport belts 3, flat linear motors 4-8, located under the transport belts 3, the fifth power source 5.9 connected to flat linear engines. The linear linear motors 4-8 are installed in a section whose length from the scissors axis Ld is not less than the maximum length of the cut sheet 10 d \ C1KS · The accelerating conveyor has movable centering rulers 11, which are made in the form of vertical belt conveyors kinematically connected with the drive conveyor

12. The scissors 1 have a cut sensor 13, which is connected through a time relay 14 to a power supply 9 of plane linear motors.

The device has an automatic sequential switching system for linear motors 4-8. Behind the vertical belt conveyors, feed rollers 15 are installed. The accelerating conveyor 2 can include a drive roller table. The device may include stationary guillotine shears.

The device operates as follows.

By line mechanisms located up to scissors 1, strip hire 16 lends itself to flying scissors 1, which cut sheets 10. By linear motors 4-8, sheet 10 is weighed and moved with a gap above the transport belts 2 (see Fig. 3). After the cut sheet 10 in suspension is accelerated by linear motors to the speed of the accelerating conveyor 2, and then lowered to the conveyor. Moreover, at the time of cut, the cut sensor 13 through the time relay 14 gives

870018 4 command to disconnect the linear motors from the power source 9.

Since the strip hire 16 is supplied for cutting continuously, then part. 5 flat linear motors located near the scissors may not be switched off (j figure 4). The subsequent inclusion of linear motors 5.6 is performed automatically as the 10 advancement of the leading edge of the strip hire 16 (Figs. 5, 6, 3).

Flat linear motors 4-8 can be switched on to a running magnetic field that develops normal? T and tangential T forces acting on the cut sheet 10 (Figs. 3,4,5,7). To exclude the front end of the sheet from being bored, one of the linear motors 4 can be installed between 20 scissors 1 and the conveyor 2 and be permanently turned on (see Fig. 3). Depending on the sheet mass, thickness and material, part of the linear linear motors can be switched on 25 running magnetic field, and the other hours.

part - on a pulsating magnetic field that develops normal forces acting on the strip (see Fig. 6.8) After 30 linear motors are automatically turned off, the sheet is lowered onto the conveyor belt 2 and its belts 3 are moved to the feed rollers 15 or another line mechanism installed behind the conveyor 2. ₃₅ During acceleration of the sheet in a suspended state, it may shift from the axis of the line, so the sheet in front of the feed rollers 15 is centered by the movable rulers 11. The movable centering rulers 11 have the same linear speed of conveyor belts with belt conveyor 2.

Centering rulers 11 are adjusted depending on the width of the foxes ?? · com.

The use of a device for the transverse cutting of strip products from non-magnetic alloys makes it possible to improve the quality of the products manufactured and the yield of the sheet.

Claims (1)

The invention relates to the processing of metals by pressure, in particular to equipment for cutting, and can be used in cross-cutting lines for strips of non-magnetic electrically conductive alloys. A device for cross cutting of rolled strip, containing flying scissors, acceleration of a conveyor belt, installed by them and including driving transport belts, and a cutting sensor f1J, are known. The disadvantage of such a device is that when processing rolled strip with high demands on the surface quality, accelerating conveyors cause defects (rubbing, scratches, etc.) on the surface of the cut sheets due to the difference in velocity of the flying shears and conveyor. The reduction of surface defects applied to the cut sheet by the accelerating conveyor during its transportation from the flying shears at a rate exceeding the feed rate of the strip to be cut. This goal is achieved by the fact that the device is equipped with flat linear motors, located under the transport tapes in an area whose length from the axis of the scissors is not less than the length of the cut sheet, and the power source connected to it, and the cut sensor is connected to the power source. Figure 1 shows a general view of a device for cross cutting of rolled strip; FIG. 2 is the same general view of the device in the glider of FIG. 3 — a scheme for switching on linear motors to a running magnetic field when transporting the cut sheet and feeding the front end of the strip; 4 shows a circuit for turning on linear motors on a running magnetic field at the moment of cutting the sheet j in FIG. 5, a circuit for switching off linear motors at the moment of lowering the sheet on the conveyor of FIG. 6 in Fig. 7, the forces acting on the cut sheet with the linear motor turned on on the traveling magnetic field) in Fig. 8 are the forces acting on the cut sheet with the linear motor turned on and the pulsing magnetic field} in Fig. 9. ynyh motors to a power source. The device contains flying scissors, accelerating conveyor 2, mounted on them and including driving conveyor belts 3, flat linear motors 4-8 located under transport tapes 3, and a power source .9 connected to flat linear motors. Flat linear motors 4-8 are installed on a section whose length from the axis of the scissors L l is not less than the maximum length of the cut sheet 10 bD The accelerating conveyor has movable centering bars 11, which are: in the form of vertical conveyor belts kinematically connected with the conveyor drive 12. Scissors 1 have a cut sensor 13, which is connected via a time relay 14 to a power source 9 of flat linear motors. The device has an automatic sequential switching system linearly with motors 4–8. Feed rollers 15 are installed behind vertical belt conveyors. Accelerating conveyor 2 can turn on the drive roller table. The device may include stationary guillotine shears. The device operates as follows. The line mechanisms located up to the shears 1, the rolled bar 16 is fed to the flying shears 1, which cut the sheets 10, and by the linear motors 4-8 the sheet 10 is weighed and moves with a gap above the conveyor belts 2 (see fig, 3). After cutting, the sheet 10 in a suspended state is accelerated by linear motors up to the speed of accelerating conveyor 2 and then lowered onto the conveyor. At the same time, at the time of the cut, the cut sensor 13, via the time relay 14, issues an 84 command to disconnect the linear motors from the power supply 9. Since the rolled bar 16 is fed continuously for cutting, the part. the flat linear motors located near the shears may not be shut off (j of Fig. 4). The subsequent insertion of the linear motors 5,6 is performed automatically as the leading edge of the rolled steel 16 advances (Fig. 5.6,3). The flat linear motors 4-8 may turn on on a traveling magnetic field, developing normal Ic and tangential T forces acting on the cut sheet 10 (Fig 3,4,5,7). Duplication to block the front end of the sheet one of the linear motors 4 can be installed between the scissors 1 and the conveyor 2 and would ь permanently switched on (see, fig, 3), depending on the sheet mass, thickness and material, a part of flat linear motors can be switched to a traveling magnetic field, and another part to a pulsing magic field that develops normal I. forces acting on the strip (see Fig. 6,8) After the linear motors are automatically disconnected, the sheet is lowered onto the conveyor belt 2 and its belts 3 moves to the feed rollers 15 or another line mechanism installed behind the conveyor 2. but weighted state it may be displaced from the axis of the line, so that the sheet in front of the feed rollers 15 is centered by moving bars 11, Moving centering bars 11 have the same linear speed of movement of the belts with belt conveyor 2, Centering bars 11 are adjusted depending on the width. The use of a device for the transverse cutting of rolled strip of non-magnetic alloys improves the quality of the output and the yield of the sheet, the invention. A device for the transverse cutting of rolled strip containing flying shears, accelerating transggorter mounted behind them and including driving conveyor belts, and. chat cut, distinguished e with s- By the fact that, in order to reduce surface defects applied to the cut sheet by the accelerating conveyor, it is equipped with flat linear motors placed under the transport belts on a section whose distance from the axis of the scissors is not less than the length of the cut sheet 8700186 the power supply connected to them, and the cut sensor is connected to the power supply. Sources of information taken into account during the examination 5 1. V. Fainshtein. Metal finishing in plate rolling shops. M., 1969 publishing house. Metallurgists, p.200-203, Fig. 31. yL I I II -1 j.1, 1 .1 I, 4-fr t I I. II II II Ii; I; i ii 11 hh-H-II F I ii i i i I I I I I FIG. 7 fig S Network . , five b S Network . Lt A1 but