Stand of channeling mill
FIELD: technological processes.
SUBSTANCE: stand for the crimped strips contains upper and lower rollers established one over another with a clearance, creating the caliber of the set configuration enclosed by conic flanges of the lower roller. Circular grooves are located on the lower roller; a body of the upper roller is executed with a rubberised surface. Thus execute an inter-roller clearance depending on depth of the grooves and width of a formed strip. Internal edges of flanges of the lower roller are inclined to a horizontal under a certain corner of 83°...85°.
EFFECT: assortment expansion of channeling mill and decrease of cost.
4 cl, 1 ex, 1 dwg
The invention relates to equipment for processing of metals by pressure and can be used on mills, profile, corrugated strip.
Such roll forming mills are characterized by the presence of a large number of workers stands (up to 30), containing usually two horizontal roll forming the caliber of a given configuration. The design of the stands forming mills for forming corrugated strips are described, for example, in the book Istoricheskogo and other Production of roll-formed sections (equipment and technology). M.: metallurgy, 1982, p.98-102.
As the corrugated strip are formed with corrugations facing up (to prevent injury to their peaks when driving the roller mill), the upper roller of existing stands is performed with circular grooves corresponding form (their number depends on the number of corrugations being formed in the cage), and the lower circular projections of the same shape.
Known working cage roll forming mill for forming corrugated strips, comprising upper and lower rollers, each of which is made of molding, Katusha and auxiliary elements forming rolls barrel, the diameter of the auxiliary elements less than the diameter Katusha items by a certain amount (see A.S. USSR №1381810, CL 21D 5/06 from 30.04.86). However, this crate napagod what if the production of the joined into one corrugated sheets with different directions (longitudinal and transverse) corrugations.
The closest analogue to the declared object is the cage roll forming mill, described in U.S. Pat. Of the Russian Federation No. 2056191, CL 21D 5/06, publ. in BI No. 8, 1996
This crate contains a set with a given gap of the upper and lower rollers forming the caliber of a given configuration, and is characterized by the fact that this caliber is closed by the flanges of the lower roll, which is made with conical form, is inclined to the horizontal at an angle of 78...81°. Known crate is also unacceptable for a production to be joined into one corrugated sheets with multi-directional corrugations.
The technical task of the present invention are broadening the range of roll forming mill, producing a corrugated sheet sections, and reduced manufacturing costs.
To address this problem, the cage roll forming mill for education panel-tapes of the two corrugated strips is characterized by the fact that it contains are installed one above the other with a gap "H" of the upper and lower rollers forming the caliber of a given configuration, a closed conical flanges of the bottom roller, lower roller is made with a circular grooves under the longitudinal corrugations of the lower band and upper barrel roll in contact with the tops of the transverse corrugations of the upper strip, made with a rubberized surface, thus the value mivakulova C is Zora stand equal to: H=(h+S), where h is the depth of the grooves, S - thickness of the cast strip; the inner faces of the flanges of the lower roll is inclined to the horizontal at an angle of 83...85°, the value of h=(10...40)S, and the number of grooves on the lower roll is 3...9.
The essence of the proposed technical solution is that the lower roll cage is made with circular grooves, and the upper roller with a smooth cylindrical rubberized barrel. This mijalkovic a gap of a few more double the depth of the grooves. This allows you to set the gauge, formed by the rollers, superimposed on each corrugated strip with the corrugations of the same height, but the opposite direction. The presence of conical flanges on the lower felling prevents transverse displacement of the fringes, and the selected value of the inclination of the inner faces of the flanges of the lower roll, firstly, facilitates accurate alignment of the two bands and, secondly, enables begun in the previous stands pogibko side edges of the lower strip to form a locking connection strips.
The selected value mivakulova gap involves passing through the caliber of bands only with the corrugations of the same height. The need to gammirovanie barrel upper roll due to the fact that this barrel is in contact with the top of the transverse corrugations (i.e. the contact area is very small), and it requires effort clutch is not with roller which provides a high coefficient of friction pair "rubber steel"
This makes it possible education panel, cassette, composed of two corrugated sheets.
The drawing schematically illustrates the proposed roll forming mill.
The crate contains the upper 1 and lower 2 rolls installed with a gap H=2(h+S). Barrel upper roll is made with a rubberized surface 3, and its length L corresponds to the distance L' between the bases of the conical flanges 4 of the lower roll or somewhat less. Conical face 5 of ribs inclined to the axis XX of this roll angle α=83...85°.
On the horizontal section of the lower roll is made 3...9 circular grooves 6 in the arcuate section. This roller is in contact with the lower strip 7 containing the longitudinal corrugations, and the upper roll - top strip having a closed cross corrugations 8. The side edges 9 of the setting in calibre the lower band (they are shown by the dotted line) bending the flanges 4 at a specified angle.
The height of all of the corrugations is the same and is: h=(10...40)S.
Crate works as follows.
The lower corrugated strip in all the stands at the same level, comes in caliber with simultaneous pogibli side edges at an angle α. The upper band after shaping in the previous four-roll stand transverse corrugated is using a special Pereybere roller device is lowered to the level of the lower band and the caliber is superimposed on it - is the education panel of the cassette.
If necessary, the value mivakulova gap is adjusted by moving the upper roll pressure screws of known construction (with decreasing gap increases grip the top of the roll with the band).
Experimental verification of the claimed cage carried on roll forming mill 0,5...2,5×300...1500 OJSC "Magnitogorsk iron and steel works".
To this end, the camp was established stand of the proposed design, the parameters of which were determined by the parameters of manufactured panels cassettes. The thickness of the formed strips S=0,7...2.0 mm, and the value of h joined in the stands of the corrugated strips were: h1=10·07=7 mm, h2=10·2=20 mm, h3=40·0,7=28 mm and h4=40·2=80 mm Quantity being formed of longitudinal corrugations semicircular shape was equal to 3, 6 and 9. Tried lower rollers with tapered flanges and angle α=80...88°.
The diameters of both of the rolls were the same - 350 mm; the thickness of the rubber layer on the upper barrel of the roll - 20 mm
When the above parameters rolls and α=83...85° any problems using the stand did not arise, and up to 98.5% panels tapes having a width of 1000 mm Art. 10 KP meet the necessary criteria. When α=80...82° observed mutual lateral displacement shared bands with the deterioration of the castle of their connection. P and α =86...88° had difficulty entering the lower band at the caliber that caused the stop of the mill with the need for manual transverse offset of that strip.
Crate selected as the closest analogue in the experiments were not used because of its obvious unsuitability for connecting two corrugated strips. Thus, experimental validation confirmed the acceptability found technical solutions to achieve this goal and its advantage over the known object.
According to feasibility studies conducted in the Central laboratory of JSC "MMK", the use of the claimed invention will expand the range forming mills producing corrugated sheet profiles and to reduce production costs (compared with separate forming two bands and then connecting them into a coherent whole) not less than 1.5 times.
The cage roll forming mill has the form shown in figure 1, and is designed for strips with a thickness of 0.7 to 2.0 mm and a width of 500...1200 mm of steel with din≤450 MPa.
The diameter of both rolls - 350 mm, barrel length upper roll L=1000 mm, the thickness of the rubber layer 20 mm.
The lower roll is made 6 of circular arc grooves with h=40 mm Size mivakulova gap H=2h+S=2 (40+0,7...2,0)=81,4...84,0 mm
The size of the interior angle is the conical faces of the flanges of the lower roll to a horizontal α =84°.
1. The cage roll forming mill for education panel-tapes of the two corrugated strips, characterized in that it contains are installed one above the other with a gap "H" of the upper and lower rollers forming the caliber of a given configuration, a closed conical flanges of the bottom roller, lower roller is made with a circular grooves under the longitudinal corrugations of the lower band and upper barrel roll in contact with the tops of the transverse corrugations of the upper strip is made with a rubberized surface, thus the value mivakulova gap stands equal to H=(h+S), where h is the depth of the grooves, S - thickness of the cast strip.
2. The crate according to claim 1, characterized in that the inner faces of the flanges of the lower roll is inclined to the horizontal at an angle of α=83...85°.
3. The crate according to claim 1, characterized by the fact that the value h=(10...40)S.
4. The crate according to claim 1, characterized in that the number of grooves under the longitudinal corrugations of the lower band on the lower roll is 3...9.
FIELD: technological processes.
SUBSTANCE: open profile with ribbed, crimped or other surface is formed in automatic line profile-bending mill of a coiled stripe without preceding heating. Final forming of closed profile is performed in seam-pressing gauge. Edge for welding is prepared, overlapping welding is performed with overlap melting without additive materials. The stripe is moved guiding shaft connected to electric profile-bending mill engine, with continuous control of welded junction quality and data transfer to computer.
EFFECT: improved quality of welded junction.
3 cl, 2 dwg
FIELD: technological processes.
SUBSTANCE: closed crimps are formed in sequence on a stripe blank in rolls in two cuts. Two lengthwise trapezoid crimps are made in the first cut. These crimps are parallel and symmetrical to the longitudinal profile axis, and are repeated in periods. The second cut forms traverse hemispherical crimps. Height of lengthwise and traverse crimps is equal. Traverse crimp crosses two opposite lengthwise crimps at half of their length. Traverse crimp ends are formed by sloping facets of lengthwise crimps, directed towards the longitudinal profile axis.
EFFECT: improved profile bearing capacity.
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
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: 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