Profile-bending machine drive

FIELD: technological processes; engines and pumps.

SUBSTANCE: drive includes an engine, reduction gear, roll rotation sprockets skirted by roller chain, power train and idler sprocket, with power train positioned at the inlet side of machine. Four rolls of each mill lie in the same diametric plane and form two strips simultaneously. To rotate the rolls the chain grips opposite left or right sides of vertically adjoining sprockets of one mill in sequence, and passes from lower sprocket of the previous mill to upper sprocket of the next mill along the rolling course.

EFFECT: reduced production cost due to simpler and cheaper machine drive.

3 cl, 1 dwg, 1 ex

 

The invention relates to mechanical equipment rolling mills and can be used in roll forming mills, for example, for the production of corrugated sheets.

The drive of such mills is largely similar to the drive section mill hot rolling and, as a rule, is a group, i.e., the rotation of the work rolls all stands using one motor with adjustable speed. Features drive existing forming mills is described, for example, in the book edited by Istoricheskogo "Production of roll-formed sections (equipment and technology)", M.: metallurgy, 1982, s-149. In recent years, an increasing distribution has a chain drive forming mills, characterized by relatively low energy consumption and simple design that reduces capital and operating costs when profiling.

Known drive roll forming mill with circuit envelope sprocket rotation of the rolls on the S-curve, the drive cage arranged in two parallel rows, and the support of stars between them, which makes possible the independent profiling of two bands (see U.S. Pat. Of the Russian Federation No. 2256522, CL B21D 5/06, publ. in BI No. 20, 2005). However, this drive is unsuitable for a mill stand which has four working roll and formed into two PR is the profile.

Analogous to the claimed object is a drive roll forming mill in U.S. Pat. Of the Russian Federation No. 2244604, CL B21D 5/06, B21B 35/00, publ. in BI No. 2, 2003

This drive includes a motor, gear, sprocket rotation of the rolls, surrounded by a chain of Halle an der Saale, drive and idler gears, and the drive wheel is located on the inlet side of the mill, and is characterized by the fact that the torque is transmitted only from the lower rolls and even the last of the stands, as well as both of the rolls first (specify) stand, bend around the sprocket chain on S-shaped and sinusoidal curves.

This drive is also unacceptable for a mill stand which is formed into two profile with four rolls.

An object of the invention is the reduction of production costs by simplifying and cheapening drive mill, forming two bands simultaneously.

To address this problem, the drive roll forming mill for the production of corrugated sheets simultaneously from two lanes, drive cages which contain located in a common diametrical plane of the four drive roll with stars of rotation, includes motor, gear, idler gear and located on the inlet side of the mill power gear, a chain of Halle an der Saale, consistently envelope opposite left and right sides adjacent vertically stars in the stop of one cage and turning with the lower sprocket previous during the drive rolling mill stand on the top sprocket subsequent drive cage; the drive is designed for mill having 16-20 drive cages; the drive is designed for mill, interstand distance which is 1,5...2,0 maximum diameter of the rolls.

The essence of the proposed solution lies in the choice of this scheme coverage chain sprocket rolls, which drives all of the rolls of the mill, as well as in the determination of the optimal number of trains and minimum interstand distance, which reduces the required length of chain gall and reduces the cost of the drive.

The inventive drive profile bending machine is schematically shown in the drawing (arrow - a direction moldable strip).

The actuator includes a motor 1, gear 2, power 3 and stretch 4 gears and sprockets 5 drive roll mill 6 mill covered endless roller chain (gall) 7.

This circuit 7 sequentially covers the top 8, two medium 9 and the bottom 10 each asterisk stands and stretches through gears 4 (short arrows show the direction of rotation of the sprocket wheels and the movement of the chain). In each stand, the chain comprises successively, from top to bottom, right or left toothed sectors (shaded) sprockets 8, 9 and 10, which provides the required direction of rotation of all four rolls and movements of the two strips a and B in the same direction).

It is currently owned by agenie power wheel on the inlet side of the mill gives a steady chain tension, preventing unwanted "jerks" rotating stars. The recommended number of drive cages (16 to 20), and the value of the interstand distance l=(1,5...2,0) D (here D is the maximum value of the diameter of the main roll) minimizes the length of the chain and provides high-quality molding corrugated strips with the desired number of corrugations on their width.

Chain drive easy to use, but requires periodic lubrication of the teeth of the sprockets and wheels. For continuous operation of the circuit is its gradual extension that causes excessive "slack" chain with possible jumping of teeth; in this case, the required chain tension is achieved by the corresponding movement of the tensioning wheel.

Experimental validation of the proposed actuator carried out on one of the forming mills Magnitogorsk, producing corrugated sheet sections.

To this end, the location of the circuit corresponds to the circuit in the drawing (it is only possible for simultaneous profiling of two bands with all the drive rollers of the mill). In the experiments varied the number of actuating the forming mill (18 to 23), and the value of the interstand distance (in the range from 1.3 L to 2.5 D).

The best results (minimal production costs at the required quality corrugated sheets) obtained i.e. monitoring) reference and proposed technical solutions. In other embodiments, actuator performance deteriorated. Thus, when the number of trains N<16 achieved the required geometry worksheets with multiple corrugations, and when N>20 chain length hampered the operation of the drive that led to unplanned downtime of the mill (and the increase in production costs). To poor maintenance of the mill led l<1,5D, and when l>2D - increased the length of the actuator and the circuit with these negative effects. The value of D in the experiments was in the range of 350 to 400 mm; used single-row roller chain with step t=20 mm and a breaking load of 3.8 cu (GOST 5528); the drive power is 120 kW, maximum speed profiling - 70 m/min

Known actuator, taken as the closest analogue, not tested due to deliberate it is unacceptable for the simultaneous profiling of the two bands. Thus, the experiments confirmed the acceptability of the proposed technical solution to achieve this goal and its advantage over the known object.

According to feasibility studies conducted in the Central laboratory of OJSC "Magnitogorsk iron and steel works, the use of the invention in the manufacture of corrugated sheets will reduce costs (compared to existing roll forming mills with the same output) is almost 5 times.

Specific example

Roll forming mill for the production of corrugated sheets of thickness 0.5...2.5 mm and a width of 0.5...2.5 m has 17 mill drive, shown on the drawing.

The diameter of the work rolls D=380 mm, the value of l=1,75·D=1,75·380=665 mm

The drive power is 120 kW. Chain - roller single row with t=20 mm; Umax=60 m/min

1. The drive roll forming mill for the production of corrugated sheets simultaneously from two lanes, drive cages which contain located in a common diametrical plane of the four drive roll with asterisks rotation, including motor, gear, idler gear and located on the inlet side of the mill power gear, a chain of Halle an der Saale, consistently envelope opposite, left or right side vertical sprocket rotation of one of the crates and turning with the lower sprocket previous during the drive rolling mill stand on the top sprocket subsequent drive cage.

2. The actuator according to claim 1, intended for mill having 16-20 drive cages.

3. The actuator according to claim 1 or 2, designed for mill, interstand distance which is 1,5...2,0 maximum diameter of the rolls.



 

Same patents:

FIELD: technological processes.

SUBSTANCE: beforehand mushroom-shaped flutes are formed with semicircular tops and inter-flute sections and intermediate flutes are formed with vertical lateral facets on the front end of strip with length that is equal to inter-cage distance of profile-bending machine in the cage, the top roller of which has separating flanges. Rollers are distanced after forming of mushroom-shaped flutes for free passage of corrugated strip, mushroom-shaped flutes are formed in cages of profile-bending machine and intermediate flutes with vertical lateral facets are finally formed in the last cage of profile-bending machine by means of free setting with smooth rollers.

EFFECT: quality is improved; technological resources of the process are expanded and production costs are reduced.

1 ex

FIELD: technological processes.

SUBSTANCE: invention is related to equipment for metal forming, in particular, to machines for production of cold bent corrugated sheet profiles, mainly for production of steel panel-cassettes from corrugated strips. Profile-bending machine contains decoiler, dressing machine, molding machine with working cages and aligning rollers and drive, flying shears and collecting roller table. Machine is equipped with additional decoiler and dressing machine. In duo cages of molding machine above the top roller concave supporting roller is installed. Behind duo cages coaxially aligning rollers are installed, 4-roller cage, device of double bending, three-four duo cages. Number of machine duo cages that are installed in front of 4-roller cage is equal to 12...20. Drive of machine is of chain type.

EFFECT: invention provides expansion of assortment of specified bent profiles and reduction of expenses during their production.

3 cl, 1 ex, 2 dwg

Profiled sheet // 2324562

FIELD: construction.

SUBSTANCE: profiled sheet is obtained on a profile bending figure and has corrugations, located in a longitudinal direction. One or both walls of one or more, or all corrugations are in the form of wave-like lines. Besides that, the sheet has transverse steps, which are periodically and repeatedly located on the length of the sheet.

EFFECT: increased anti-avalanche capacity of profiled sheets and broadening of their arsenal.

11 dwg

FIELD: production methods.

SUBSTANCE: on the stretch of the metal it is profiled the lengthwise gofers simultaneously on the all breadth with plate areas between them and side shells with the following multipass riveting. On the final pass on the plate areas and side shells it is profiled with periodical step the transverse goffer with giving to the flank the final shape.

EFFECT: it is exceeded the range of flanks.

2 cl, 2 dwg

FIELD: plastic working of materials, namely tools for making thin-web sections such as bands of ledges.

SUBSTANCE: rolls include working roll grooved pass, shaping rolls, centering guiding beads of lower roll with distance between its inner end surfaces equal to width of section at inlet of rolls, cone members accompanying preliminary shaping of section until its inlet to working grooved pass. Cone surfaces trapping guided section are formed on guiding beads in front of its inner end surfaces. On cone members accompanying preliminary shaping of section before it penetrates closed working roll grooved pass there are inner end surfaces. Distance between cone surfaces and end surfaces is equal to width of section shaped in closed roll grooved pass. Method comprises steps of trapping introduced section, centering it along inner guides of roll ends, preliminary shaping of section along cone surfaces of rolls by free bending until section penetrates working roll grooved pass. Inlet section is trapped before centering it by means of cone surfaces of guiding beads and after preliminary shaping of it by free bending in cone members of rolls section is specially pulled in by means of upper rolls to working roll grooved pass at restricting section by width during manufacturing transition.

EFFECT: improved accuracy of shaping process.

4 cl, 3 dwg

FIELD: plastic working of metals, namely shaping metallic sheets for lining walls and ceilings.

SUBSTANCE: section includes lengthwise periodic trapezoidal cross- section corrugations arranged by two rows along width of section and mutually spaced by flat inter-corrugation portions of predetermined size and closed semicircular cross corrugations. Each corrugation passes through mean parts of two lengthwise corrugations normally relative to their axes. Height of all corrugations is the same; width of cross corrugation consists of 0.75 - 0.80 of width of lengthwise corrugation.

EFFECT: lowered metal consumption for making sections.

1 dwg, 1 ex

FIELD: plastic working of metals, possibly production of bent sections.

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EFFECT: improved quality of bent sections.

2 dwg, 1 ex

FIELD: plastic working of metals, possibly manufacture of facing panels.

SUBSTANCE: method for making corrugated sections comprises steps of increasing number of corrugations in second and several next transitions due to simultaneously shaping at each side of ready section cross corrugations with periodical pitch and one lengthwise corrugation; using shaping mill having roll grooved pass in its stands in the form of two pairs of upper and lower shaping rollers, two pairs of upper and lower lateral calibrating rollers and one pair of central calibrating rollers, upper and lower, arranged between shaping rollers. Roll grooved passes of second and next stands include also two additional upper and lower central calibrating rollers, two upper and lower lateral calibrating rollers and one pair of spacing sleeves. Upper central calibrating rollers have two built-in shaping punches; lower central calibrating has respective grooves; additional lower central calibrating rollers have grooves for cross corrugation shaped in roll pass of previous stand. Spacing sleeves of respective stands are mounted between additional central calibrating rollers, Upper rolls are driven ones; lower rolls are joined with drive unit through driving pinions arranged by cantilever fashion. Runners of coil uncoilers have outer diameter corresponding to outer diameter of calibrating rollers of roll grooved passes of working stands.

EFFECT: enhanced efficiency of method, improved design of mill.

5 cl, 6 dwg

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EFFECT: simplified design of section sending mill.

3 dwg

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SUBSTANCE: roller table is arranged behind last stand of mill and it includes rollers; group type drive unit; deflecting member in the form of rectangular plate of predetermined height spaced by predetermined distance from last stand depending upon length of shape and mounted with possibility of rotation. Drive rollers are cylindrical ones and they are mounted by cantilever fashion in horizontal supporting sections.

EFFECT: simplified reduced-cost operation of roller table.

2 cl, 1 ex, 1 dwg

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FIELD: rolled stock production.

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EFFECT: lowered production costs, enhanced quality of shapes.

3 cl, 1 dwg, 1 ex

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EFFECT: lowered cost of shape bending mill, reduced power consumption for profiling, enhanced quality of ready shapes.

2 cl, 1 dwg, 1 ex

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EFFECT: enlarged manufacturing possibilities, enhanced quality of shapes.

5 cl, 6 dwg

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2 dwg

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EFFECT: enlarged manufacturing possibilities and increased module quantity of construction.

3 cl, 4 dwg

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EFFECT: elimination of tuning profiling axis at readjustment of machine.

3 dwg

FIELD: plastic working of metals.

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EFFECT: enhanced operational efficiency, simplified design of apparatus.

2 cl, 8 dwg, 2 ex

FIELD: rolled stock production, possibly manufacture of cold bent rolled shapes.

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EFFECT: enhanced quality of bent shapes due to their improved geometry, lowered costs of production process.

2 dwg, 1 ex

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EFFECT: enhanced quality of coating, lowered costs for making shapes.

3 cl, 1 dwg, 1 ex

FIELD: rolled stock production, possibly development of shape bending mills.

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EFFECT: lowered cost of drive unit and reduced expenses for its operation.

3 cl, 2 dwg, 1 ex

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