Apparatus for shaping stepped protrusions on sheet material

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

 

The invention relates to the processing of metals by pressure, in particular to a device for corrugating sheet materials used as roofing and cladding for roofs and walls, the manufacture of various building structures and components.

A device for corrugating belt material containing a counter and a reciprocating movable on the frame in the guide holders with built in them forming and locking elements located on both sides of the moldable material (ABT. mon. The USSR № 474377, B 21 D 13/06, 1975).

It is also known device for producing zigzag corrugation containing fixing and forming elements arranged respectively in the retainer and forming nodes, the operating surfaces of which are made in the form of a linear corrugation and are located on both sides of the workpiece (RF patent No. 2100120, 6 B 21 D 13/00, 6 B 21 D 13/02, publ. 1997). Fixing and forming working surfaces are displaced relative to each other in the plane of the workpiece in the direction perpendicular to the feed direction of the workpiece by an amount equal to the half pitch line of the corrugations. Forming working surfaces of the retainer and forming elements inclined to the horizontal plane by an angle corresponding to the angle at the vertex of the sawtooth lines. Fixing and forming elements of the knot is to be accomplished by the possibility of mutual reciprocation in a vertical plane. Forming a node has the ability to plane-parallel movement relative to the latch node in the vertical plane parallel to the feed direction of the workpiece. In the manufacture of zigzag corrugation as blanks using corrugated material. Forming zigzag corrugation lead bending. Forming a node makes a plane-parallel movement relative to the latch node in the vertical plane parallel to the feed direction of the workpiece.

Both devices have low productivity due to long cycle molding step ledges. In addition, the device is structurally complex because they consist of a large number of nodes and components.

Closest to the proposed device is adopted for the prototype, the known device for forming the stepped protrusions on the sheet material described in the international application (PCT WO No. 98/24568, 21 D 13/08, publ. 1998). The device includes forming units installed with strain placed between them a sheet material, the actuator forming elements and the drive of the feed of sheet material. Forming elements mounted on opposite sides of the supply line being formed of sheet material, is connected to drive reciprocating movement to raft the CSO contact with each other through the sheet material and are drawn to each other working surfaces of stepped form. Supply of sheet material in the forming zone of the stepped protrusions is carried out cyclically with feeding rollers installed before the forming zone. Move sheet material for forming a subsequent step of the ledge after molding the previous step ledge and drain forming elements being formed from sheet material in its original position.

The drawback of the prototype is a low performance due to the long duration of the operating cycle of the molding step ledges. In addition, the device prototype is structurally complex due to the presence of the drive reciprocating movement of the forming elements and drive rotation of the rollers, the feeding moldable material in the forming zone.

The objective of the invention is to improve the performance of the device while its constructive simplification.

The problem is solved in that the device for forming the stepped protrusions on the sheet material containing the forming elements that are installed with the possibility of plastic deformation is placed between a sheet material, the actuator forming elements and the drive of the feed of sheet material in the forming zone, the forming elements made in the form of a pair of parallel spaced rolls. On amitrole opposite sides of the forming surface of each of the rolls made extended along the axis of rotation of stepped ledges, end surfaces, facing in the same circumferential direction. The actuator forming elements in the form of synchronous drive of the rolls in opposite directions and aligned with the drive of the feed of sheet material.

Forming and front surfaces of both rolls can be made smooth or adjacent to other sites annular projections and annular depressions covering the axis of rotation of the rolls. Annular projections of one roll are located between the annular projections of the second roll.

Forming elements made in the form of a pair of parallel spaced rollers connected with the drive of a synchronous rotation in opposite directions, provide the possibility of forming a stepped ledges during continuous movement of the sheet material and forming elements, which improves the device performance. When this molding step of the protrusions can be made easier and faster because it does not require cyclic feed of sheet material and a cyclical reciprocating movement of the forming elements.

Stepped ledges of both rolls, pointing their end surfaces in the same circumferential direction, are arranged so that during rotation of the rolls with the same angular velocity in opposite directions can plastically, deformer is the substance introduced between the rolls of sheet material to form therein a stepped ledges.

The placement of stepped terraces on diametrically opposite sides of the forming surface of the rolls is achieved the possibility of formation of two-stage lugs one revolution of the rolls.

Implementation of the actuator forming elements in the form of a synchronous drive of the rolls in opposite directions and combining it with the drive of the feed of sheet material in the forming zone, provided constructive simplification of the device.

Form and forming end surfaces of both rollers with annular projections and annular troughs, at the location of the annular projections of one roll between the annular projections of the second roll, allows you to mould stepped ledges on the shaped sheet material, the cross sectional profile of which corresponds to the profiles of both rolls. Circular protrusions and depressions may have a wavy form or shape of a trapezoid, triangle, and polyline and other.

Examples of embodiment of the invention shown in the drawing, in which figure 1 shows the device in the first example of embodiment, side view; figure 2 is a front view; figure 3 is a top view; figure 4 is a device in the second example of embodiment, side view; figure 5 is the same, front view; 6, same, top view; 7 - smooth sheet material with molded stepped on it what istupati; Fig - shaped sheet material formed therein a stepped ledges.

In the first example (figure 1, 2, 3) design the device for forming the stepped protrusions 1 on a flat sheet material 2 includes forming elements made in the form of a pair of parallel spaced upper 3 and lower 4 rolls, kinematically connected to the actuator 5 via the gear 6. On diametrically opposite sides of the flat forming surface 7 of the upper 3 and lower 4 rolls made extended along the rotation axes 8, 9 of stepped ledges 10 with flat end surfaces 11. End surface 11 of the upper shaft 3 facing in the same circumferential direction about the rotation axis 8 and the same direction with the circumferential direction of the end surfaces 11 of the lower shaft 4 relative to the axis of rotation 9. In the second example (Fig. 4, 5, 6) design the device for forming the stepped protrusions 12 on the shaped sheet material 13 includes forming elements made in the form of a pair of parallel spaced upper 14 and lower 15 rolls, kinematically connected to the actuator 5 via the gear transmission 6. On diametrically opposite sides of the wavy forming surface 16 of the upper 14 and lower 15 rolls made extended along the axes of the rotations is Iya 17, 18 of stepped ledges 19 with a wavy end surfaces 20. End surface 20 of the upper roll 14 facing in the same circumferential direction about the rotation axis 17 and the same direction with the circumferential direction of the end surfaces 20 of the lower roller 15 relative to the axis of rotation 18. For directions smooth material 2 to the rolls 3, 4 and profiled material 13 to the rolls 14, 15 has a roller 21.

The device operates as follows.

For forming the stepped protrusions 1 on a flat sheet material 2 is placed on the roller conveyor 21 and is directed to the gap between the upper 3 and lower 4 rolls. When the actuator 5 of the upper 3 and lower 4 rolls are rotated through gears 6 and rotate synchronously with the same angular velocity in opposite directions. Forming surface 7 of the upper 3 and lower 4 rolls capture moldable sheet material 2 and put it through the gap between the rollers 3, 4. During rotation of the rolls 3, 4 of stepped ledges 10 converge in the area between the axes 8 and 9 of the rolls 3, 4 and their end surfaces 11 plastically deform the sheet material 2 and molded it stepped ledges 1 with smooth end surface. For one revolution of the rolls 3, 4 on the sheet material 2 are formed two stepped ledge 1. In the molding process step is Astapov 1 and in the intervals between their rotating molding rolls 3, 4 continuously stretch the sheet material 2 through the gap between the rollers 3, 4.

For forming the stepped protrusions 12 on the shaped sheet material 13 of his stack on the conveyor 21 and is directed to the gap between the upper 14 and lower 15 rolls. When the actuator 5 of the top 14 and bottom 15 rolls are rotated through gears 6 and rotate synchronously with the same angular velocity in opposite directions. Wavy forming surface 16 of the upper 14 and lower 15 rolls seize shaped profiled sheet material 13 and passing it through the gap between the upper 14 and lower 15 rolls. During rotation of the rolls 14 and 15 is stepped ledges 19 converge in the area between the axes 17 and 18 of the rolls 14 and 15 and their wavy end surfaces 20 plastically deform the shaped sheet material 13 and molded it stepped protrusions 12 with wavy frontal surface. For one revolution of the rolls 14 and 15 on the shaped sheet material 13 are formed two stepped ledge 12. In the process of forming the stepped protrusions 12 and in the intervals between their rotating molding rolls 14 and 15 continuously stretch the sheet material 13 through the gap between rollers 14 and 15.

1. The device for forming the stepped protrusions on the sheet material containing the forming ele the coefficients, installed with the possibility of plastic deformation is placed between a sheet material, the actuator forming elements and the drive of the feed of sheet material in the forming zone, wherein the forming elements made in the form of a pair of parallel spaced rolls, on diametrically opposite sides of the forming surfaces each of which has extended along the axis of rotation of stepped ledges with end surfaces facing in the same circumferential direction, the actuator forming elements in the form of synchronous drive of the rolls in opposite directions and aligned with the drive of the feed of sheet material.

2. The device according to claim 1, characterized in that the forming side and end surfaces of both rolls are made in the form adjacent to each other sites annular projections and annular depressions covering the axis of rotation of the rolls, and the annular projections of one roll are located between the annular projections of the second roll.



 

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