Method of stacking corrugated sheets and device to this end

FIELD: transport.

SUBSTANCE: invention relates to rolling, particularly, to method and device of stacking corrugated sheets. Proposed method consists in sheet feed to limiter and sheet fall in accumulator zone. Sheet is fed into accumulator zone from horizontal position at preset angle α° to horizon equal to angle α of beams turn in the plane parallel to rolling axis to height H=L·sinaα, where L is sheet length. Lifting to height H is performed in 0.2…0.5 s. Note here that magnitude α°=(0.015…0.160)·P·V, where P is sheet weight, kg, V is sheet speed, m/s, while magnitude α° is in inverse proportion with sheet length. Proposed device comprises accumulator, moving limiter and parallel beams fitted on horizontal guides to support cantilever rollers with turn drive, and centering rules. Said beams may move along said guides. Note that beams are mounted on two rotary supports to turn in planes parallel to rolling axis through angle α=1…10°. The number of turning rollers of sheet with length of Lmax makes, for one support, n=0.9 Lmax/1, where 1 is the distance between adjacent turning rollers along direction of motion, and 1=const.

EFFECT: preventing crumbling of sheet front edges in stacking.

2 dwg

 

The invention relates to rolling production and can be used for stacking of finished sheets, for example bent corrugated.

Such leaves (usually with longitudinal corrugations) are obtained through profiling cold - or hot-rolled strips of a relatively small thickness (0.5 to 3.0 mm) in special mills with their subsequent cut-to-length (optional) length. The finished sheets are sent by conveyor to the stacker is designed to the design, where they formed packs, which after packing shipped to consumers. The technique of laying the corrugated sheets and features layers are described, for example, in the books A.P. Chekmareva and Webclicker. Roll-formed profiles rolled, M., metallurgy, 1974, p.33 and Istoricheskogo and other cold-formed corrugated profiles of rent, Kiev, Tekhnika, 1973, p.44.

There is a method of stacking corrugated sheets in packages, in which a series of profiles are placed on the lifting table up until the height of the package will not reach 850 mm with a width of no more than 1450 mm, the feed speed of the sheet - 1,4...3.5 m/S.

However, this technology installation does not exclude injury (collapse) of the front ends of the sheets on the movable focus stacker (this emphasis are described, for example, in A.S. Czechoslovakia No. 2061127, club, publ. 01.02.84).

The closest analogue to the declared object is the way kladbithenskih sheets in the stack (A.S. The USSR №1074781, CL B65G, publ. in BI No. 7, 1984).

This method is to feed the sheet to the stacker is designed to stop in the area transport authority and the subsequent discharge of the sheet from him and is characterized by inhibition of the sheet traveling magnetic field. The disadvantage of this method is the ability to hit the front end of the sheet (with its inevitable collapse) when changing the parameters of the magnetic field, resulting in insufficient braking of the moving sheet.

Known device for stacking sheets in the foot by Franz. application No. 2435428, CL VN, publ. 04.04.80, This setting for stacking sheets after cutting includes a chain conveyor having two chains consisting of four sections (two vertical and two horizontal), forming a closed rectangle in the vertical plane. The disadvantage of this device is its relative complexity, and the possibility of slippage of the chains (if worn with the hood chain) with leading asterisks.

The closest analogue to the proposed device is a device for stacking corrugated sheets containing the drive, mounted on horizontal rails parallel spaced beams and arranged them in a series of cantilever rollers driven rotation and centering line, mobile limiter, and beams installed with an option of moving along the guides (RF Patent No. 84275, B21D 43/22).

The disadvantage of the stacker is the possibility of lifting the front end of the sheet upon impact of the emphasis, in particular, is a large mass, with a maximum speed of feed (2 m/s).

The technical task of the present invention is to improve the quality of the sheets due to the prevention of injury (collapse) of the front ends of the sheets.

To solve this problem in the way of stacking corrugated sheets, which consists in feeding a sheet to the stop and subsequent fall in the area of the drive, when this sheet serves in the area from a horizontal position at a given angle α° to the horizontal equal to the angle of rotation of the beams in planes parallel to the roll axis at the height H=L·sinα, where L is the length of the sheet, taking at this height for 0.2...0.5 s, while the value α°=(0,015...0,160)·P·V, where R is the sheet weight, kg V - speed, m/s, and it is inversely proportional to the length of the sheet; a device for stacking corrugated sheets containing the drive, mounted on horizontal rails parallel spaced beams and arranged them in a series of cantilever rollers driven rotation and centering line, mobile limiter, and a beam mounted for movement along the rails, characterized in that the beams are installed on the two rotary bearings can be rotated in Ploske is s, parallel to the roll axis, the angle α=1...10°, and the number of console-rotating rollers for the sheet length Lmaxis for one support n=0,9Lmax/l, where l is the distance between adjacent cantilever and swivel casters in the direction of travel of the sheet, and l=const.

Given the parameters of the proposed object is obtained empirically and are empirical.

The essence of the proposed technical solution is to reduce the impact force of a moving sheet (front end) on the surface of the movable limiter stacker. This is achieved by lifting beams placed on them in a number of console-rotating rollers at a certain height, defined by the parameters of the moving sheet. As a result of this prevents crushing of the front end of the sheet, which can be manifested in the form of a bend this end up.

The proposed device is schematically shown in plan in figure 1, figure 2 - section a-A.

The device comprises a feed roller 1, sheet 2, drive 3, the horizontal rails 4, parallel spaced beams 5, cantilever rollers 6 with gears of rotation 7, the centering line 8, the stopper 9, the lower discharge roller beams 5 are installed on the two rotary bearings 10 can be rotated in planes parallel to the axis of rolling, resulting in a change in the angle α of inclination of the beams 5 to g is rizontal.

The device operates as follows. Before laying sheets 2 set the desired angle of inclination of the beams 5 (and the axes of the cantilever swivel casters 6), beam 5 along the guide rails 4 and the centering line 8 is set to a predetermined width of the sheet 2, which is fed from the feeding roller 1, the limiter 9 is moved to a predetermined length of sheet 2, while the cantilever rollers 6 are reduced, then there are the working position. The sheet 2 fed to the stacking, cantilever rollers 6 is transported to the limiter 9. After touching the front end of the sheet 2 of the stopper 9, the rollers 6 are omitted (rotated 90°) actuator 7, and the sheet 2 drops into the drive 3. The rollers 6 are returned to the operating position. Downstream roller conveyor formed by the height of the stack is removed from the drive 3.

Experimental validation of the proposed method and device carried on roll forming machine 0,5÷2,5×300÷4500 OJSC "Magnitogorsk iron and steel works".

To this end, the stacker is designed with console-rotating rollers of the mill, made in accordance with this technical solution, varied its main claimed parameters: the values of α and N, and the rise time sheets to the height H for sheet gauge mill 0,5÷2,5×300÷1500. The best results (the output quality of the sheets within 99,0...and 99.8%) were obtained with the use of this izopet the deposits. Deviations from the recommended parameters worsened performance.

For example, when the angle α≠(0,015...0,160)P·V output quality sheets are not exceeded 98,3% due to the collapse of their front ends. When N>L·sinα increased the force of impact of the front end of the falling leaves, lying on the lifting table, which hurt their surface, and when N<L·sinα - increased the number of leaves with crumpled ends of the front end. Factor K=0,015...0,160 increases with P and V.

The decrease in rise time (t<0.2 s) of the leaves was not possible due to the design of the stacker is designed, and when t>0.5 s in some cases, there were "uticaria" sheets to each other that hurt the ends of the thin (h=0,5...0,7 mm) sheets. It was also found that for sheet gauge mill 0,5÷2,5×300÷1500 (i.e., thickness 0,5...2,5, of a width of 300...1500 and a length of 4000 11000...mm) it is most expedient to have the angle α in the range 1°...10°.

The method of stacking sheets, selected as the closest analogue (see above) in the experiments were not tested due to the absence of the stacker is designed to mill 0,5÷2,5×300÷1500 appropriate equipment that generates a magnetic field braking. Control tests of the existing stacker is designed this mill gave a yield of quality sheets within 96,5...98,0%. Thus, experimental validation confirmed the acceptability found-the x solutions to achieve their goals and their advantages over the known objects.

Feasibility studies have shown that the implementation of the claimed invention at the mills, similar'm OJSC MMK, will increase the output of high-quality rental of not less than 2% with a corresponding increase in profit from its implementation.

Specific example

The stacker is designed depicted in figure 1, fit cold-rolled sheets with longitudinal semi-circular corrugations.

Tile dimensions: thickness - 1.5 mm, width 900 mm, length L=7,5 m Thus, the sheet weight is P=0,15·90·750·a 7.85 g/cm3= 79480 g = 79,48 kg Speed sheets V=1.7 cm/S.

The angle α°=0,044P·V=0,044·79,48·1,7≈6°; lifting height during the last roller: N=L·sin α=7500·0,1045≈784 mm rise Time ≈0,35 C.

For maximum sheet length (mill 0,5÷2,5×300÷1500-Lmax=11 m) number of console-rotating rollers at=500 mm will be:(for one support, and full - 40 pieces)

1. The method of installation of corrugated sheets, which consists in feeding a sheet to the stop and subsequent fall of the leaf in the area of the drive, characterized in that the sheet is served in the mentioned area from horizontal at an angle α° to the horizontal equal to the angle α of rotation of the beams in planes parallel to the roll axis at the height H=L·sin α, where L is the length of the sheet, while taking on the height H in 0.2...0.5 s, while the value α°=(0,015...0,160)·P·V back prospect who portionally the length of the sheet, where R is the sheet weight, kg; V is speed in m/s

2. Device for stacking corrugated sheets containing the drive, mounted on horizontal rails parallel spaced beams and arranged them in a series of cantilever rollers driven rotation and centering line, mobile limiter, and a beam mounted for movement along the rails, characterized in that the beams are installed on the two rotary bearings to rotate in planes parallel to the roll axis, the angle α=1...10°, and the number of console-rotating rollers for the sheet length Lmaxis for one support n=0,9Lmax/1, where 1 is the distance between adjacent cantilever and swivel casters in the direction of travel of the sheet, and l=const.



 

Same patents:

The invention relates to packaging and can be used in the equipment of the sheet shops of metallurgical enterprises for packaging and wrapping of sheet metal

FIELD: rolled sheet production, namely transporting and stacking metallic sheets.

SUBSTANCE: sheet stacker includes electromagnetic rollers; sections of lateral guiding liners; front stop; lever-driven lifting table. Said table in the form of frame with supports that are protruded over frame and arranged in row mutually in parallel at predetermined pitch. Sheet stacker also includes multi-chain cross conveyer whose upper branches are arranged in intervals between said supports normally to axis of roller table. Supports arranged on frame at side of sheet entry to sheet stacker are made with possibility of their additional lifting relative to frame by value exceeding distance from working plane of supports at lower position of lifting table till working plane of multi-chain cross conveyer.

EFFECT: enlarged manufacturing possibilities.

3 cl, 4 dwg

The invention relates to rolling equipment, namely the design of devices for transporting and stacking sheet material

The invention relates to the field of rolling mills, and more particularly to equipment for stacking sheets in packages, and allows you to provide passage of the strip through the stacker is designed without cutting and packaging

The invention relates to a pressure treatment of sheet material, and more specifically to the design of devices for stacking sheets

The invention relates to a pressure treatment of sheet material, more specifically to the design of devices for stacking sheets

FIELD: rolled sheet production, namely transporting and stacking metallic sheets.

SUBSTANCE: sheet stacker includes electromagnetic rollers; sections of lateral guiding liners; front stop; lever-driven lifting table. Said table in the form of frame with supports that are protruded over frame and arranged in row mutually in parallel at predetermined pitch. Sheet stacker also includes multi-chain cross conveyer whose upper branches are arranged in intervals between said supports normally to axis of roller table. Supports arranged on frame at side of sheet entry to sheet stacker are made with possibility of their additional lifting relative to frame by value exceeding distance from working plane of supports at lower position of lifting table till working plane of multi-chain cross conveyer.

EFFECT: enlarged manufacturing possibilities.

3 cl, 4 dwg

FIELD: transport.

SUBSTANCE: invention relates to rolling, particularly, to method and device of stacking corrugated sheets. Proposed method consists in sheet feed to limiter and sheet fall in accumulator zone. Sheet is fed into accumulator zone from horizontal position at preset angle α° to horizon equal to angle α of beams turn in the plane parallel to rolling axis to height H=L·sinaα, where L is sheet length. Lifting to height H is performed in 0.2…0.5 s. Note here that magnitude α°=(0.015…0.160)·P·V, where P is sheet weight, kg, V is sheet speed, m/s, while magnitude α° is in inverse proportion with sheet length. Proposed device comprises accumulator, moving limiter and parallel beams fitted on horizontal guides to support cantilever rollers with turn drive, and centering rules. Said beams may move along said guides. Note that beams are mounted on two rotary supports to turn in planes parallel to rolling axis through angle α=1…10°. The number of turning rollers of sheet with length of Lmax makes, for one support, n=0.9 Lmax/1, where 1 is the distance between adjacent turning rollers along direction of motion, and 1=const.

EFFECT: preventing crumbling of sheet front edges in stacking.

2 dwg

FIELD: transport.

SUBSTANCE: invention relates to rolling, particularly, to method and device of stacking corrugated sheets. Proposed method consists in sheet feed to limiter and sheet fall in accumulator zone. Sheet is fed into accumulator zone from horizontal position at preset angle α° to horizon equal to angle α of beams turn in the plane parallel to rolling axis to height H=L·sinaα, where L is sheet length. Lifting to height H is performed in 0.2…0.5 s. Note here that magnitude α°=(0.015…0.160)·P·V, where P is sheet weight, kg, V is sheet speed, m/s, while magnitude α° is in inverse proportion with sheet length. Proposed device comprises accumulator, moving limiter and parallel beams fitted on horizontal guides to support cantilever rollers with turn drive, and centering rules. Said beams may move along said guides. Note that beams are mounted on two rotary supports to turn in planes parallel to rolling axis through angle α=1…10°. The number of turning rollers of sheet with length of Lmax makes, for one support, n=0.9 Lmax/1, where 1 is the distance between adjacent turning rollers along direction of motion, and 1=const.

EFFECT: preventing crumbling of sheet front edges in stacking.

2 dwg

Up!