RU2810218C2 - Automatic line for cutting rolled steel flat tape into measuring strips - Google Patents

Abstract

FIELD: press-forging technological equipment.

SUBSTANCE: line for automatic longitudinal-transverse cutting of rolled steel flat tape into measuring strips contains a loading device, an unwinder, an edge bender, a base device, a straightening device, disk shears, a receiving table, guillotine shears, a looper, a straightening machine, a receiving device, an electric device, a hydraulic device, pneumatic device. The metal roll is installed on the trolley of the loading device and with the help of it the roll is put on the unwinder drum, by rotating which the strip along the edge bender table is inserted into the rollers of the base device and then into the correct device. The sheet of metal is fed into disc shears, where the metal is cut into strips. The strips are fed into guillotine shears. The cut strips are fed into the looper carriage. The strips are extended from the carriage to a distance of 300 mm. The looper roller is lowered onto the cut strips and a loop is created in the looper using disc scissors. The strips are captured by the feed rollers of the straightening machine, the strips are straightened and fed along the length onto the roller conveyor of the receiving device. The strips are cut to length and fed along the roller table until it stops, then they are dumped into the receiving device using pushers.

EFFECT: ensuring replacement of labour-intensive technological operations on guillotine shears with an automatic mode with high-precision longitudinal and transverse cutting of steel coil tape into strips.

1 cl, 1 dwg

Description

The present invention relates to forging and pressing special technological equipment for high-precision (±0.3÷0.5 mm) longitudinal and transverse cutting of steel coil tape with a width of 300÷500 mm and a thickness of 3.0÷10.0 mm and can be used in procurement sites, workshops of all industries of the Russian Federation. The automatic longitudinal-transverse cutting line is designed for longitudinal cutting of rolled metal into strips, followed by cutting the strip lengthwise into strips up to 6000 mm long and belongs to metal cutting equipment.

The technical result of the invention is the replacement of labor-intensive technological operations on guillotine shears with an automatic mode with high-precision longitudinal and transverse cutting of steel coil tape into strips.

A known unit for longitudinal dissolving of rolled sheets (slitting line), containing a roll unwinder, a straightening machine, centering rollers, pulling rollers, disc shears and a winding device. (Anisimov V.I. et al. Expansion of the range of rolled metal products - a reserve of savings / Anisimov V.I., Antipanov V.G., Shvartsman Z.M. - Chelyabinsk: South - Ural. book publishing house, 1980. - pp. 30-31.)

Longitudinal cutting of a rolled sheet (tape) is combined with trimming the side edges, which go into the edge shredding shears for shredding. The disadvantages of this technical solution are the low yield (the mass of crushed edges is 1...4% of the roll mass) and the impossibility of obtaining blanks less than 4 mm wide. (GOST 503-81. Cold-rolled strip made of low-carbon steel. Technical conditions.)

A known unit for transverse cutting of strips of 2.5x2350 mm according to the book by A.A. Korolev “Rolling mills and equipment of rolling shops”, M., “Metallurgy”, 1981, p. 203, figure (a), UDC 621.771, including an unwinder, pulling rollers, edge trimming shears, a loop pit, a straightening machine, cross-cut shears, transfer conveyors, between which there is an oiling machine containing at least two roller supports mounted at the input and output of the sheet and a device for applying an oil coating , and sheet storage. The disadvantages of this technical solution are the application of an oil layer to the surface of moving sheets using a felt roller, which leads to excessive oiling of the sheets and contamination of the sheet surface with wear products of the said felt roller in direct contact with it. Metal particles, loose burrs from the edges, dust and other contaminants located on the surface of the sheets stick and accumulate on the surface of the rollers and are transferred to other sheets, contaminating and damaging their surface. When the front end enters and the rear end exits, intense wear occurs on the felt rollers in their contact area, due to the presence of burrs at the mentioned ends. The roller sections in contact with the side edges of the sheets, which have burrs, are also subject to intense wear. This contributes to uneven wear of the felt rollers, both in diameter and length, which in turn contributes to uneven oiling along the length and width of the sheet and frequent replacement of felt rollers. Excessive oiling of sheets entails increased oil consumption, and also contributes to the disruption of the shape of sheet packs during their transportation, both by lifting devices and by transport. The reason for the loss of shape is the insufficient adhesion forces between the individual sheets due to an excess layer of lubricant between them. As a result, the sheets move relative to each other under the influence of inertial forces or vibration, which leads to their deformation, packaging failure, pack scattering, rejection of some sheets and complaints about the delivered products. In addition, when preparing sheets for further processing, for example, for stamping, the consumer is forced to remove the excess layer of lubricant, which leads to additional costs.

Known line for cross cutting of rolled material (RU Patent No. 2075361 C1 19970320, IPC B21D 45/00 (2006.01). Application 5021277/02, 1992.01.09; Publ. 1997.03.20. Bulletin No. __.), equipped with a vehicle 1 roll unwinding device 2, sheet straightening machine for tape 3, flying shears 4, sheet straightening machine 5 for cut sheets, sheet stacker 6 and control system 7. Vehicle 1 in the area after cutting contains sections 8, 9, 10 with non-driven rollers 11, between which inductors of linear asynchronous motors are placed 12, 13, 14. Rollers 11 are arranged in a checkerboard pattern /Fig. 2/. Sections 8, 9, 10 are respectively equipped with sheet presence sensors 15, 16, 17 and speed sensors 18, 19, 20, installed to interact with the moving sheet 21. The speed sensor can be made, for example, in the form of an angular displacement transducer of the photoelectric type VT 178, kinematically connected to one of the non-drive rollers 11. The described design can be used for the entire vehicle 1 in the area after cutting, incl. sheet stacker 6.Disadvantagesof this technical solution are the inability to cut the original roll of flat tape with a width of 300-500 mm and a thickness of 3.0÷10.0 mm into strips 20÷120 mm wide with a width accuracy of ±0.3÷0.5 mm with further cutting of the strips at measured lengths.

Close to the stated technical solution is a line for transverse and longitudinal cutting (Patent SU No. 1606268_A1_19901115, IPC 7 B23D 25/00 (2006.01). Application 4403697, 1988.04.05; Publ. 11/15/90. Bulletin No. 42.), containing a roll storage 1, an unwinder 3, a roller straightening machine 4, pulling rollers 5 and 8, looper 6 with wiring 7, guillotine shears 9, driving wiring table 10 with photosensor 11, side guide rollers 12, disc shears 13, edge shredding shears 14, conveyors 15, 17 and 19, separating rollers 16, winder 18 with a drive, oiling machine 20, sheet stacker 21. Constructing a conveyor for transferring sheets to the sheet stacker in the form of separate sections, each of which can be rotated around an axis, ensures quick changeover from one type of cutting to another. The invention relates to devices for metal forming and can be used in the mechanical engineering and metallurgical industries. The goal is to increase productivity and expand technological capabilities. The line includes a roll storage unit 1, an unwinder 3, a roller straightening machine 4, pulling rollers 5 and 8, a looper 6 with wiring 7, guillotine shears 9, a drive wiring table 10 with a photo sensor 11, side guide rollers 12, disc shears 13, edge shredding shears 14 , conveyors 15, 17 and 19, separating rollers 16, winder 18 with a drive, oiling machine 20, sheet stacker 21. Making the conveyor for transferring sheets to the sheet stacker in the form of separate sections, each of which is designed to rotate around an axis, ensures quick changeover with one type of cutting to another. 1 salary f-ly, 2 ill.Disadvantagesof this technical solution are the inability to cut the original roll of flat tape with a width of 300-500 mm and a thickness of 3.0÷10.0 mm into strips 20÷120 mm wide with a width accuracy of ±0.3÷0.5 mm with further cutting of the strips at measured lengths.

The inventive line contains: 1. Loading device, 2. Unwinder, 3. Edge bender, 4. Base device, 5. Straightening device, 6. Disc shears, 7. Receiving table, 8. Guillotine shears, 9. Loop former, 10. Straightening machine , 11. Receiving device, 12. Electric device, 13. Hydraulic device, 14. Pneumatic device. (see Figure 1).

The operation of the line as a whole is ensured by the joint work of its components. Using a lifting mechanism, the metal roll is installed on the trolley of the loading device 1 and with the help of it the roll is put on the unwinder drum 2. Rotating the unwinder drum 2, the strip is inserted along the table of the edge bender 3 into the rollers of the base device 4 and then into the straightening device 5. Then the sheet of metal is fed by the feed rollers fed into disc shears 6, where the metal is dissolved into strips. Next, the cut strips are fed to the receiving table 7, where the ends of the strips are straightened. From the receiving table 7, the strips are fed into guillotine shears 8, where, if necessary, the defective ends of the strips are cut off. Then the cut strips are fed through the base device 4 and the separating roller into the looper carriage 9, where they are laid out in two separating shafts between separating disks. 9 strips extend from the carriage by ~300mm. The strips are clamped by the feed rollers of the carriage from hydraulic cylinders and manually by the straightening rollers of the looper carriage. By turning on the “Carriage-forward” button, the disk shears 6 cut the metal into strips, and the looper carriage 9 moves forward to the high-precision leveling machine 10. Lower the looper roller 9 onto the cut strips and, using the disk shears 6, create a loop in the looper 9. Grab the strips feed rolls of the straightening machine 10. Then raise the feed rolls and the upper straightening rolls of the looper carriage 9. Feed the strips into the straightening machine 10, straighten the strips and feed them along the length onto the roller conveyor of the receiving device 11. Cut the strips along the length and feed them along the roller conveyor all the way, then use the pushers to dump them into the receiving device 11.

The tasks to be solved by the claimed invention are:

1. Development of new products, replacement of labor-intensive manual processes, increasing the productivity of finished high-precision products and expanding production;

2. Processing of the original roll material:

Material _______________________________________________ tape gk TU 14-106-502-96

Temporary tensile strength, MPa _____________________________________ up to 490

Thickness, mm _________________________________________________________________3.0…10.0

Belt width, mm _____________________________________________________ 300…500

Outer diameter of rolls, mm __________________________________________ 650…1600

Inner diameter of rolls, mm ________________________________________ 500…800

Roll weight, kg _________________________________________________________________ up to 500

3. Production of a range of cut strips (mm) depending on the thickness of the metal:

3mm - 20,25,30,35,40,45,50,55,60,65,70,80,90,100,120;

4mm - 20,25,30,35,40,45,50,55,60,70,80,90,100,120;

5mm - 25,30,35,40,45,50,55,60,70,80,90,100,120;

6mm - 30,35,40,45,50,55,60,70,80,90,100,120;

7mm - 40,45,50,55,60,70,80,90,100,120;

8mm - 40,45,50,55,60,70,80,90,100,120;

9mm - 60,70,75,80,100,120;

10mm - 60,70,75,80,100,120.

Accuracy of the resulting workpiece in width, mm:

for 3.0<S≤5.0 ____________________________________________________________ ±0.3

for 6.0<S≤10.0 _______________________________________________________________ ±0.5

Length of finished products, mm _____________________________________________________ up to 15000

4. Line specifications:

Line operating mode _____________________________________________ automatic

Roll loading mode _____________________________________________ semi-automatic

Tape loading mode ________________________________________ semi-automatic

Tape separator replacement mode __________________________________________ manual

Mode for setting knives and tape separators ___________________________________ manual

Unwinder drum diameter, mm_________________________________ 500/600/750

Maximum cutting speed, m/min _____________________________________________________30

Approximate metal cutting modes:

Tape thickness
S, mm Source width
roll max, mm Strip width min, mm Number of strips
max, pcs. 3.0 500 20 15 4.0 500 20 12 5.0 500 thirty 10 6.0 500 thirty 10 8.0 300 40 6 10.0 300 60 5

Technical utilization coefficient Kt.i. ________________________________ 0.85

Line dimensions, approximately, mm

- length _________________________________________________________________ 30000

- width _________________________________________________________________ 8000

- height __________________________________________________________________ 3000

Line weight, approximately, t. _____________________________________________ 30

Installed power, approximately, kW_________________________________ 200

Type of current _________________________________________________________________ variable

Voltage, V __________________________________________________________ 380/220

Line composition and design requirements.

The line should include:

1. The device is bootable.

The loading device is a mobile cart with a lifting prism, which is moved along the rail track manually using handrails.

The base of the trolley is made in the form of a welded structure, on which 4 wheels are installed in bearing units, which serve to move the trolley. The lifting prism moves up the four columns using a hydraulic cylinder. The prism is lifted manually using a hand pump attached to the base of the trolley.

To prevent the strip from tipping over, removable stops are provided on the prism. They can be rearranged in the prism depending on the width of the strip.

In the initial position, the trolley is moved away from the unwinder and is located in an area convenient for loading a metal roll onto it.

The load capacity of the trolley is no more than 5 tons.

The lifting height of the prism is up to 200mm.

To load the roll onto the unwinder drum, the operator, using a hand pump, pumping up pressure in the hydraulic cylinder, lifts the prism with the roll installed on it until the axes of the roll and drum are aligned. Next, the operator manually, using handrails, moves the loading cart along the longitudinal axis and “puts” the roll on the unwinder drum. Then a command from the control station opens the drum until the roll is securely fixed. Lowers the trolley prism and moves the trolley into the roll loading area.

The loading trolley must be recessed relative to the floor level.

2. Unwinder.

An unwinder is a device for installing and unwinding rolls of metal tape. It consists of a vertical welded frame with a plate on which a drum is mounted on bearing supports with radially movable segments for fixing the roll on the drum. The movement of the segments (compression - expansion) is carried out by a hydraulic cylinder.

The unwinder has a filling drive. The rotation of the unwinder drum is carried out by a gear motor.

The roll of tape is placed on the drum using a loading device, after which the drum segments are moved apart until the roll is tightly seated on the drum using a hydraulic drive.

The unwinder provides for correction of the unwinder drum with the metal roll relative to the line axis and a pressure roller to prevent the roll from fluffing.

Installation of rolls with different internal diameters is possible by installing additional linings on the unwinder drum. The drum is equipped with replaceable pads for installing rolls with an internal diameter of 500, 600, 750 mm.

3. Edge bender.

The edge bender is used for the convenience of threading the beginning of the metal strip into the correct installation.

The edge bender consists of a body, a lower rotary table, a retractable table, and an upper rotary traverse.

The rotary table and traverse are installed in cantilevers on axes in the edge bender body; they rotate using hydraulic cylinders.

The retractable table is installed in linear guides on the rotary table, the movement drive is a hydraulic cylinder.

4. Base device.

The basing device is designed to orient the supply of metal strip.

The basing device consists of a bracket on which basing rollers are installed.

The locating rollers are adjusted depending on the width of the metal strip.

Eliminates displacement and scattering of strips after the guillotine. The position of the rollers is adjusted manually by the operator when installing the roll (individually and synchronously).

5. The device is correct.

The straightening machine is designed to correct the rolled curvature of the supplied metal.

A straightening machine consists of a base on which drive shafts are installed in rows in bearing units. Gears are installed on the correct shafts; rotation from one wheel to another is transmitted through idler gears.

Above this row of rollers, pressure shafts are mounted in movable bearing housings.

The first drive shaft. Drive from a geared motor through an overrunning clutch. From it, rotation is transmitted to the lower row of shafts. The vertical movement of the upper feed shaft is carried out by a hydraulic cylinder.

The remaining straightening shafts are moved vertically through a screw pair from the worm gearboxes. Drive - manual.

6. Disc scissors.

Disc shears consist of a knife block, drive and frame.

The knife block consists of the following components: bed; housings; rotary (diverter) housing; knife shafts; synchronizer shaft; gear stand; cardan shafts.

The bed is a welded structure made of thick sheet metal, annealed, with machining of the base surfaces. It is the basic unit of disc shears.

The body is a welded structure made of thick sheet metal with subsequent mechanical processing. The housing contains eccentric cups in which knife shafts are mounted in tapered bearings.

Rotary (retractable) housing - an assembly unit similar to a fixed housing, only instead of knife shafts, a conical mandrel is installed in the bearings to support the knife shafts. The rotary (retractable) housing can move, opening access to the knife shafts for tool selection.

Knife shafts are made of 40X steel with heat treatment of working surfaces. When set, the knives are fixed on the shaft with two spline nuts.

The synchronizer shaft is a prefabricated structure used to bring together and spread the knife shafts through toothed gears and a worm pair.

A gear cage is a welded housing, inside of which a gear drive is installed. From the gearbox, rotation is transmitted to the blade shafts using cardan shafts.

The drive is a prefabricated structure installed on a separate frame. Consists of a gearbox, overrunning clutch and electric motor

The frame is a welded structure made of channel and thick sheet metal.

Resharpening of disc knives is carried out according to the diameter of the knife. The maximum permissible amount of regrinding of circular knives is 50 mm per diameter.

Disc knives are made of steel with 4Х5МФ1С (H13) hardening to a hardness of 56…58 HRC, knife diameter ~500 mm.

6.a. An additional basing device in front of the knife stand with a belt position control sensor and a separate deviation visualization screen with an accuracy of at least 0.5 mm.

7. Reception table.

The hydraulic wire table is designed to receive cut strips from disc shears. It has lower and upper tables driven by hydraulic cylinders. As well as rollers at the exit from the device. The clearance between the rollers is adjusted when changing the thickness of the metal to prevent overlap of the cut strips. Adjustment is made manually by turning the screws once before cutting a certain thickness.

8. Guillotine shears.

The cutting device is designed for cutting the deformed section of cut tapes when loading a new roll. The drive is hydraulic. Designed for cutting the entire range of metal thicknesses (3.0…10.0 mm). The cutting is carried out from the operator's console. No manual operations.

9. Looper.

Loop former - designed to create a compensation loop.

Type: prefabricated welded structure.

Drive for raising and lowering the table: hydraulic from a hydraulic cylinder.

The loop control is carried out visually.

Looper carriage.

Has five correct rollers and two feed rollers. Designed for clamping and straightening cut strips and their semi-automatic movement through the loop pit to the dividing shaft and the precision leveling machine. Controlled by the operator from the remote control. Movement is carried out along a welded base from a hydraulic motor along a gear rack. No manual operations.

The vertical movement of the upper feed shaft is carried out by a hydraulic cylinder.

The vertical movement of the upper straightening shafts is through a screw pair from the worm gearboxes. Drive - manual.

10. The machine is correct (high precision).

The correct machine includes:

The bed is a stable and functional welded structure. The following are installed on it: transmission, straightening unit, receiving rolls and guides.

Leveling unit - equipped with 11 leveling rolls. The straightening rolls are mounted on rolling bearings, hardened and ground. To avoid shaft deflection, support rollers are installed. The traverse position is adjusted from gear motors with servo drives through screw worm mechanisms.

Take-up rolls - a pair of driven take-up rolls are located at the machine inlet. Raising and lowering of the roller is carried out by hydraulic cylinders.

Drive - The straightening rolls and take-up rolls of the straightening machine are driven via heavy-duty cardan shafts that require virtually no maintenance. From the distribution box, all straightening rolls are driven synchronously. The machine is driven by a gear motor with a servo drive.

11. Receiving device.

The receiving device is designed to receive cut strips in bulk.

12. Electrical device.

The electrical device includes a control system and electrical equipment for the automatic line, which ensure operation of the line in accordance with a given cyclogram in the required mode: adjustment and automatic.

Electrical device composition:

- control cabinet with converters;

- main control panel with control panel;

- 2 auxiliary control panels;

- AC electric motors;

- electromagnets of hydraulic distributors;

- contactless switches;

- angular displacement sensors;

- communications.

General requirements for electrical equipment of the line according to GOST R IEC 60204-1-99.

The main control panel is designed to ensure the operation of the line in operating (automatic) and adjustment modes, and to enter the necessary operating parameters into the line controller.

The line is controlled in operating (automatic) mode through the main control panel, and in equipment setup mode (when filling a metal strip) - through auxiliary control panels.

The main control panel should be located in the pit area. Control of the operation of line nodes and selection of the line operation mode are provided from the main control panel using a universal operator panel.

Auxiliary control panels are installed in close proximity to the unwinder, the correct machine for ease of maintenance and visual control of operation.

Emergency stop of the line is provided both on the main and auxiliary control panels by pressing the “Emergency stop” buttons.

To ground the electrical equipment of the line, the Buyer must connect a grounding loop to the line.

13. Hydraulic device.

The hydraulic device includes control and regulating hydraulic equipment, which ensures the operation of the line in accordance with a given cyclogram in the required mode.

Composition of the hydraulic device:

1. Device for supplying working fluid to power the hydraulic system of the line.

2. Hydraulic control units for the working bodies of the following line units:

- unwinder;

- edge bender;

- the car is correct;

- looper;

- cross cutting scissors;

- the car is correct

Hydraulic cylinders and hydraulic motors are used as executive hydraulic motors.

3. The maximum pressure provided by the hydraulic station is 15 MPa.

14. Pneumatic device.

The pneumatic device includes control and regulating equipment.

Line installation procedure.

All line equipment is installed on a specially prepared foundation. The foundation is prepared by the Buyer (a construction task is issued, which serves as the basis for the development of a construction project).

The line equipment is installed on the foundation. The bolts are installed in pre-prepared pits and filled with concrete after the line is installed.

Electrical wiring and installation of cables is carried out in special junction boxes, ducts and metal hoses.

Installation of hydraulic lines is carried out after final alignment and fastening of the equipment to the frame and foundation bolts.

The working fluid supply device is installed next to the oil-conducting lines of the hydraulic system and is connected to it with flexible hoses. They are then securely fastened.

Reliability requirements.

The warranty period from the moment of signing the certificate of completion is 12 months with a 2-shift (shift duration - 8 hours) operating mode.

The average service life before major overhaul is at least 10,000 hours.

Service life 8 years.

Warranty service is carried out subject to compliance with the operating rules of the line (correct setting of knife gaps, knife overlaps; work only with sharpened knives; cutting metal specified in the technical specifications; cutting uncontaminated metal, etc.).

Requirements for manufacturability and metrological support for development, production and operation.

Control at the manufacturing stage and during operation should be carried out with a universal measuring instrument.

Safety requirements.

The design of the line must ensure compliance with the requirements of GOST ISO/TO 12100-1-2001; GOST ISO/TO 12100-2-2002.

Safety precautions when using the line:

PROHIBITED:

- work with removed fences and blockages;

- work on faulty equipment;

- work with the doors of electrical equipment cabinets open;

- make adjustments while the line is operating;

- change the roll when the drive is on;

- leave a working line unattended;

- clean, lubricate, tighten fasteners, wipe down equipment during line operation;

- remove the casing from the chain drive in emergency situations and during line operation;

- remove protective walls on the line components during operation.

Install the roll and thread the tape using gloves.

Allow persons to work who have undergone safety training and have the necessary qualifications.

Observe all general safety regulations for those working under POT R M-006-97.

Emergency shutdown of the line is carried out using the red “STOP” buttons located along the line and on the central control panel.

Report any malfunctions noticed to the foreman and do not begin work without his permission.

Attention: The line must be installed in a separate area or separated by a fence.

Fences and protective devices (if necessary with interlocks) in accordance with GOST R 51342-99 are installed by the Supplier.

Aesthetic and ergonomic requirements.

Must provide: ease of maintenance, visibility, control in accordance with GOST 12.2.033-88.

The line is painted in the following colors:

RAL 5002 blue - mounting frames and technical parts installed above

main body of the line;

RAL 5015 blue - main body of the line;

RAL 2009 orange - moving and dangerous parts of mechanisms, casings, line guard rails;

RAL 7032 gray - housings of consoles, electrical cabinets and electrical boxes;

RAL 9005 black - hydraulic parts.

Storage and operating conditions.

Climatic design of the line equipment in accordance with GOST 15150-89 UHL placement category - 4.

The line requires constant maintenance by 2 operators and 2 auxiliary workers.

Maintenance according to the line operating manual.

Claims (1)

Automatic longitudinal-transverse cutting line for rolled steel flat tape into measuring strips, containing a loading device, an unwinder, an edge bender, a base device, a straightening device, disk shears, a receiving table, guillotine shears, a looper, a straightening machine, a receiving device, an electric device, a hydraulic device , the device is pneumatic, while the roll of metal, using a lifting mechanism, is installed on the trolley of the loading device and with the help of it the roll is put on the unwinder drum, by rotating which the strip along the edge bender table is inserted into the rollers of the basing device and then into the straightening device, the sheet of metal is fed into the feed rollers disc shears, where the metal is cut into strips; the cut strips are fed to the receiving table for straightening the ends of the strips; from the receiving table, the strips are fed into guillotine shears, where, if necessary, the defective ends of the strips are cut off; the cut strips are fed through a base device and a separating roller into the looper carriage, where they are laid out in two separating shafts between separating disks, while the strips are extended from the carriage to a distance of 300 mm; the strips are clamped by the feed rollers of the carriage from hydraulic cylinders and manually by the straightening rolls of the looper carriage, while the metal is cut into strips by disk shears, and the looper carriage is advanced forward to the high-precision straightening machine; the looper roller is lowered onto the cut strips and a loop is created in the looper using disc scissors; then the strips are captured by the feed rollers of the straightening machine; the feed rollers and the upper leveling rollers of the looper carriage are raised; the strips are fed into the machine correctly, the strips are straightened and fed in length to the roller conveyor of the receiving device; The strips were cut to length and fed along the roller table until it stops, then they were dumped into the receiving device using pushers.