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.
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.
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.
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
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.
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.
SUBSTANCE: stand includes mounted in chocks upper and lower calibrated rolls. Said chocks are arranged in housings having horizontal traverse bars, four guiding struts with diameter d and compression springs. Guiding struts pass through vertical openings of chocks. Compression springs are arranged in struts between upper chocks and horizontal traverse bars of housing. Guiding struts are provided with barrel like portion arranged symmetrically relative to horizontal axis of upper roll and having circular generatrix. Radius R of said generatrix is determined by expression R = 0.5(L + D) where L -distance between centers of chock cross sections along horizontal line. Maximum diameter D of barrel like portion of struts is determined by expression Length of barrel like portion is equal to 1.2 d.
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
FIELD: plastic working of metals, possibly manufacture of corrugated sections.
SUBSTANCE: section bending mill includes upper and lower guides convergent along shaping direction and arranged in parallel relative to flanges of produced corrugated section; vertically closed traction chains with shaping bodies in the form of bodies of revolution. Shaping bodies are mounted on upper guides and they are non-driven ones in the form of row of rollers. Hinges of vertically closed traction chains are used as driven shaping members: said hinges are in the form of cylinder -rollers that may engage for forming corrugations with row of rollers of non-driven shaping members and may perform rolling motion along shaping direction on driving branches of said chains in lower guides. Said lower guides have friction paths.
EFFECT: simplified design of section sending mill.
FIELD: plastic working of metals, possibly manufacture of commercial bent shapes.
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
FIELD: rolled stock production.
SUBSTANCE: shape bending mill used, mainly for producing tinned corrugated sheets includes successively mounted first guiding stand with cylindrical rolls, shaping duo-stands and pairs of vertical centering rollers. Shaping stands are assembled to units (each unit includes 3 - 5 stands) and mounted on common foundation plate of unit. Vertical centering rollers and additional one or two pulling devices are alternatively arranged between said units. Only first guiding stand is fully driven one. All even and last shaping stands have driven lower and idle upper rolls; odd stands have two idle rolls.
EFFECT: lowered production costs, enhanced quality of shapes.
3 cl, 1 dwg, 1 ex
FIELD: rolled stock production, namely equipment of shape bending mills, mainly for making tinned corrugated sheets.
SUBSTANCE: drive unit of shape bending mill with first guiding stand and pulling roller devices includes motor, reduction gear, sprockets, forcing and tensioning gear wheels, roller chain embracing sprockets along S-shaped curve and sine curve. Torque of motor is transmitted only to lower shaping rolls of even stands and of last stand of mill and also to both rolls of guiding stand and to horizontal rollers of pulling devices through sprockets mounted on their axles. Chain embraces sprockets of rolls of guiding stand and of rollers of pulling devices along S-shaped curve and it embraces sprockets of drive rolls and sprockets that are not joined with shaping rolls along sine curve. Axles of sprockets that are not joined with shaping rolls may be arranged higher than axles of lower drive rolls by value determined according to relation given in claims of invention.
EFFECT: lowered cost of shape bending mill, reduced power consumption for profiling, enhanced quality of ready shapes.
2 cl, 1 dwg, 1 ex
FIELD: plastic working of metals.
SUBSTANCE: method comprises steps of deforming sheet blank by drawing it through closed working gage of draw plate; using linear electric motor at making shapes. In order to draw blank through closed working gage of draw plate at smoothly deforming it, pulling effort uniformly distributed along the whole length of deformation zone is provided. Said pulling effort is created due to interaction of traveling magnetic field induced in winding of stator of linear electric motor with eddy currents induced in blank for moving blank according to traveling magnetic field. Apparatus for making shapes of sheet blank includes draw plate with closed working gage. Apparatus for making shapes of electrically conducting material includes linear electric motor supporting draw plate with closed working gage; the last is fixed to said motor. It is possible to use as linear electric motor single-side linear electric motor, double-side linear electric motor or cylindrical linear electric motor.
EFFECT: enlarged manufacturing possibilities, enhanced quality of shapes.
5 cl, 6 dwg
FIELD: plastic metal working.
SUBSTANCE: apparatus for corrugating sheet material includes shaping members rigidly mounted on shafts. Shafts are rotated in opposite directions by means of their drive units. On one shaft shaping members are arranged normally relative to axis of shaft; on other shaft shaping members are arranged symmetrically relative to said normally arranged member and in pairs at mutual inclination angle α in range 15° < α < 90°.
EFFECT: possibility for making constructional members of panels with noise absorption properties.
FIELD: plastic working of metals.
SUBSTANCE: stand includes housing, shaping aggregate. The last is in the form of two rigidly and mutually joined jaws in which two horizontal shafts-inserts are mounted. On said shafts-inserts shaping rollers joined with drive mechanism are rigidly mounted one over another with possibility of changing inter-axial distance. Shaping aggregate is in the form of stand module whose jaws consist of dismounted frameworks. Horizontal shafts-inserts with shaping rollers are mounted in movable carriages with possibility of their vertical motion. Shaping rollers are mounted in bearing assemblies of movable carriages and they are joined by key joint with said horizontal shafts-inserts. In order to provide possibility for changing inter-axial distance, horizontal shafts-inserts with shaping rollers are mounted in movable carriages whose vertical motion is timed with use of kinematic circuit and adjusted by means of two lead screws. Each of said screw has thread portions with mutually opposite direction of thread. Stand module is arranged on platform mounted in foundation with possibility of inclination in vertical plane by angle up to 30є due to its motion in annular grooves of foundation by means of worm pair. The last includes segment rigidly joined with platform; worm engaged with said segment.
EFFECT: enlarged manufacturing possibilities and increased module quantity of construction.
3 cl, 4 dwg
FIELD: plastic working of metals, possibly manufacture of shapes.
SUBSTANCE: machine includes mounted according to manufacturing process: stand for preliminarily shaping and drive profiling stands with shafts mounted by cantilever fashion. Free ends of shafts are closed by means of stirrup and paired rollers mounted in shafts and having closed profiling gap with basing on vertical and horizontal mounting surfaces of rollers. Each working shaft has basic bead. In each lower shaft two sleeves of designed size are mounted. Lower roller is mounted between said sleeves. Each stirrup is jointly mounted in housing with possibility of motion, fixation in horizontal plane and rotation by 180º and it is provided with two slides holding shafts and allowing to move them and fix in vertical plane. Each pair of rollers has in each stand basic plane supported by sleeve; dimension of sleeve is determined according to given mathematical relation.
EFFECT: elimination of tuning profiling axis at readjustment of machine.
FIELD: plastic working of metals.
SUBSTANCE: apparatus includes shaping members mounted with possibility of plastic deforming of sheet material placed between them; drive unit of shaping members and drive unit for feeding sheet material to working zone. Shaping members are in the form of pair of rolls arranged in parallel; each roll has on diametrically opposite sides of its surface extended along rotation axis stepped slopes with end surfaces turned to the same peripheral direction. Drive unit of shaping members is in the form of synchronized rotation drive designed for rotating rolls in opposite directions and it is combined with drive unit for feeding sheet material. Working and end surfaces of both rolls may be in the form of mutually adjacent annular protrusions and annular recesses embracing rotation axis of rolls. Annular protrusions of one roll are arranged between annular protrusions of other roll.
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.
SUBSTANCE: roll includes arbor with diameter d having flange, shaping members with predetermined rolling diameter D and unit for securing them to arbor. Said unit is arranged at side of mill drive and it includes cylinder-cone locking ring mounted on arbor and three stops equally spaced one form other and secured to arbor by means of bolts. Stops have upper and lower cylindrical surfaces whose diameters are equal respectively (0.7- 0.8)D and d. Lateral surfaces of stops are parallel to roll axis; their end surfaces are normal relative to roll axis. Generatrices of inner cylindrical surfaces of stops turned to shaping members are inclined by angle α = 68 -70° to roll axis and they engage with cone surface of locking ring whose generatrix is inclined by angle α to roll axis.
EFFECT: enhanced quality of bent shapes due to their improved geometry, lowered costs of production process.
2 dwg, 1 ex
FIELD: rolled stock production, possibly manufacture of cold drawn shapes of sheet materials, namely coated corrugated sheets.
SUBSTANCE: apparatus includes pair of horizontal drawing rollers that are spaced one from other by preset adjustable gap. Barrels of horizontal rollers are made of fit on axle rubber rings mutually spaced by maximum vertical gap equal to maximum height of corrugations. At both sides of rollers two pairs of vertical rollers are mounted with possibility of changing distance between rollers of each pair. Distance along rolling axis between vertical rollers and axial vertical plane of horizontal rollers is selected according to given relation.
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.
SUBSTANCE: drive unit includes motor, reduction gear, power and tension gear wheels, pairs of upper and lower supports where sprockets embraced along curve by means of Gall's chain are mounted on shafts. Said supports are arranged by two mutually parallel rows; axes of all pairs of supports of mutually opposite rows are in different vertical planes. All sprockets are arranged in one vertical plane between rows of supports.
EFFECT: lowered cost of drive unit and reduced expenses for its operation.
3 cl, 2 dwg, 1 ex