JP2017202524A - Forming unit for profiling machine line - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a forming unit for a profiling machine line.SOLUTION: A forming unit for a profiling machine line comprises: a plurality of lower rollers 11, 12, 13 shaped with outer surfaces that include a lower curve P1 on at least one main transversal section plane; a plurality of upper rollers 21, 22, 23, 24, 25 shaped with outer surfaces that include, on the transversal section plane, an upper curve P2 substantially parallel to the lower curve P1.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a forming unit and a shape processing machine line for realizing a shape processing element.

  The profiler line substantially enables the production of longitudinally welded tubes. The tube is obtained by gradually bending the steel strip around the longitudinal axis until the longitudinal edges of the steel strip abut each other. A tube is obtained by welding the longitudinal edges together. The tube is cut into set length segments according to a known process. The entire production is carried out on a continuous line.

  The profiler line comprises a series of forming units arranged substantially sequentially, each unit comprising at least two profile processing rollers. These forming units are arranged to gradually bend the steel strip around the longitudinal axis until the unit has a tubular shape of the steel strip. The steel sheet is bent by passing the steel strip itself between the rollers of the various forming units. The roller gradually deforms the steel strip by contact. The steel strip is gradually deformed as the forming unit slides continuously through the forming unit.

  The profile machine line generally comprises at least one initial forming section, along which the original steel strip of the tube is gradually deformed from a flat configuration to a U-shaped bend. . This deformation is obtained by a pair of rollers (formed by a roller having a concave outer surface and a roller having a convex outer surface) associated with each forming unit. The radii of curvature of the two rollers are substantially equal. The roller typically has a horizontal axis of rotation.

  The radius of curvature of the roller gradually decreases from the start point to the end point of the forming section so as to gradually decrease the radius of curvature of the steel strip. The roller in the final zone of the molding section has a large difference between its central diameter and its end diameter. In particular, the end portion of the concave roller and the central portion of the convex roller have a considerably large diameter, resulting in a large and bulky overall shape and high cost.

  The object of the present invention is to provide a forming unit for a profiler line which makes it possible to alleviate the above-mentioned drawbacks.

  An advantage of the forming unit according to the invention is that the roller diameter can be considerably reduced, further reducing the weight and dimensions of the roller.

  Another advantage of the molding unit according to the invention is that the unit can be integrated into an existing line.

  Another object of the present invention is to provide a profile machine line that is particularly advantageous over currently available lines.

  Further features and advantages of the present invention will become more apparent from the following detailed description of embodiments of the invention, illustrated by the non-limiting examples of the accompanying drawings.

It is the schematic of the profile processing machine line which concerns on this invention. 1 schematically shows the bending of a profiled working element (P) starting from a flat shape of an initial steel strip. It is a front view of the shaping | molding unit (10) which concerns on this invention. Fig. 3 shows the molding unit of Fig. 2 in a different operating configuration. It is a front view of the guide means (5) based on this invention.

  The profile machine line schematically shown in FIG. 1 guides the starting steel strip forward along a generally horizontal forward direction (Y). As will be appreciated by those skilled in the art, the starting steel strip is gradually bent along its longitudinal axis in an upward curve to take a tubular shape and the two longitudinal edges (E1, E2) are aligned and welded together. . In the following description, the starting steel strip is shown for convenience as the “profiled element” that begins when the deformation starts by bending upwards about its longitudinal axis. In the final profile processing element (P), the longitudinal edges (E1, E2) of the starting steel strip are on top of the profile processing element (P) when welded together.

  The gradual curvature of the steel strip around its longitudinal axis lifts the longitudinal edges (E1, E2) and causes the longitudinal edges to cross each other in the upper part of the profiled working element (P) as shown schematically in FIG. It is preferable that it is generated in the upward direction by arranging them side by side. This simplifies the welding operation and subsequent removal of the weld bead (which occurs substantially above the profile processing element (P) itself in the processing line). This is done by lowering the longitudinal edges (E1, E2) and placing the longitudinal edges side by side in the lower part of the profile processing element (P) so that the steel strip is progressively lowered in the downward direction around the longitudinal axis. Does not exclude the possibility of bending.

  The profile machine line comprises a plurality of working units (10, 2a, 2b, 2c, 3a, 3b, 3c, ...), each of which has its longitudinal axis on the profile machining element (P). With two or more rollers shaped and arranged to produce a specific curvature around. The working principle of the various working units and the manner in which the unit produces the overall curvature of the profile processing element (P) are well known to those skilled in the art.

  The profile processing machine line includes a plurality of molding units (10) aligned along the first longitudinal direction (Y1). The forming unit (10) causes an initial deformation of the steel strip by means of two or more shaped rollers, changing the steel strip from a flat configuration to a curved configuration (substantially concave U-shaped configuration upward).

  After the forming section (1), a plurality of finishing units (2a, 2b, 2c,...) Aligned along a second longitudinal direction (Y2) substantially coplanar with respect to the longitudinal direction (Y1). ) Followed by finishing section (2). The finishing unit subsequently deforms the steel strip by means of a plurality of shape rollers to process the steel strip into a tubular configuration with side edges parallel and close to each other.

  The finishing section is followed by a guiding section (3) comprising a plurality of guiding units (3a, 3b, 3c, ...) aligned with each other. The guiding unit guides the steel strip, now closed in a tubular form, to welding means (4) arranged to carry out the welding of the longitudinal edge of the steel strip. The guide unit (3a, 3b, 3c,...) Includes a plurality of shape rollers.

  In general, the starting steel strip is advanced along the advancing direction (Y) and added by working units (10, 2a, 2b, 2c, 3a, 3b, 3c,...) Along various sections. The effect of the effect is to change its shape from substantially flat to tubular.

  The at least one forming unit (10) shown in FIGS. 2 and 3 comprises a plurality of lower shaped rollers (11, 12, 13) having an outer surface comprising a lower curve (P1) at least in the transverse plane (S). In particular, the outer surface of the lower rollers (11, 12, 13) includes a continuous lower curve (P1). That is, the lower curve (P1) without interruption is included.

  As shown in FIG. 2, the transverse plane is a plane on which the rotation axis of the lower roller (11, 12, 13) is present. The lower curve (P1) preferably has an upward concave surface. As can be readily seen, obtaining the lower curve (P1) by reducing the maximum diameter required to obtain the desired curvature by arranging a plurality of lower rollers (11, 12, 13). To be able to. In fact, in currently available forming units using a single lower roller, the lower curve (P1) can only be obtained by constructing a roller with a clearly larger maximum diameter in the end zone. In the molding unit according to the invention, the lower rollers (11, 12, 13) can be realized with more conservative dimensions.

  In a possible embodiment, the lower rollers (11, 12, 13) comprise a central roller (11) that exhibits a concave outer surface. In other words, except for the rotating pin that does not contact the steel strip to be deformed, the central roller (11) has a minimum outer diameter in the central zone and a maximum outer diameter in the end zone. The central roller (11) can be motorized.

  The lower roller can comprise one or more side rollers (12, 13), each having a concave outer surface. In the illustrated embodiment, the concave outer surface of the side rollers (12, 13) is connected to the outer surface of the central roller (11) in a transverse plane so as to form a substantially continuous lower curve (P1). .

  The side rollers (12, 13) have a rotation axis that is inclined with respect to the rotation axis of the central roller (11). In the illustrated embodiment, the axis of rotation of the side rollers (12, 13) branches in a direction away from the central roller (11).

  At least one forming unit (10) comprises a plurality of upper rollers (21, 22, 23, 24, 25) shaped with an outer surface including an upper curve (P2) in the transverse plane. The upper curve (P2) is preferably parallel to the lower curve (P1). That is, the upper rollers (21, 22, 23, 24, 25) are tangent to a curve that matches the lower curve (P1). As shown in FIG. 2, the transverse plane is a plane on which the rotation axis of the upper roller (21, 22, 23, 24, 25) exists. The upper curve (P2) preferably has an upward concave surface. As will become readily apparent, by placing a plurality of upper rollers (21, 22, 23, 24, 25) the maximum diameter required to obtain the desired curve is reduced and the upper curve (P2) is reduced. Can be obtained. In fact, in currently available forming units using a single upper roller, the upper curve (P2) can only be obtained by constructing a roller with a clearly larger maximum diameter in the central zone. In the molding unit according to the invention, the upper rollers (21, 22, 23, 24, 25) can be realized with more conservative dimensions.

  In the illustrated embodiment, the upper roller comprises a central roller (21) that exhibits a convex outer surface. In other words, the central roller (21) has a barrel-shaped configuration with the largest diameter in the central zone. The upper roller can further comprise one or more side rollers (22, 23, 24, 25) that exhibit a convex outer surface. The outer surfaces of the upper rollers (21, 22, 23, 24, 25) are substantially tangent to the upper curve (P2) in the transverse plane.

  In the illustrated embodiment, the molding unit (10) comprises a plurality of lower rollers (11, 12, 13) and a plurality of upper rollers (21, 22, 23, 24, 25). The rotation axis of the roller is on the same transverse plane. The upper curve and the lower curve (P2, P1) are both on the transverse plane. The upper curve and the lower curve (P2, P1) are substantially parallel to each other.

  The steel strip that is machined and bent around its longitudinal axis passes in contact with the lower roller and the lower roller and has a curvature substantially parallel to the upper and lower curves (P2, P1). Become.

  Preferably, but not necessarily, the upper rollers (21, 22, 23, 24, 25) are coupled to the upper support (20), which is movable along the vertical direction. Thereby, for example, the distance between the upper roller and the lower roller can be adjusted in relation to the thickness of the steel strip to be processed. This further allows the pressure applied by the roller to the steel strip to be processed to be adjusted.

  The upper support (20) has a curved shape with an upwardly concave surface as a whole. The support (20) further includes a seating part for rotatably accommodating the upper rollers (21, 22, 23, 24, 25).

  The upper support (20) can be coupled to a cross member (26) that is slidable vertically along the support structure (9). Means known to those skilled in the art can be arranged to direct the movement of the upper support (20). In the illustrated embodiment, the support structure comprises two cubes (91, 92).

  The lower rollers (11, 12, 13) can be coupled to the right solid (91, 92). The central roller (11) can be connected in a solid form at its end by a shaft or a rotating pin. The side rollers (12, 13) are each coupled to their respective solid bodies.

  The lower rollers (11, 12, 13) can be coupled to the lower support (14). The lower support (14) comprises two parts (14), each of which is rotatably coupled to the end of the rotation axis of the central roller (11).

  Each support part (14) further rotatably supports one of the side rollers (12, 13). In particular, each support portion (14) supports a pair of shelf members (14a), and the ends of the rotation shafts of the respective side rollers are coupled to the shelf members.

  The two opposing parts of the lower support (14) are each preferably a three-dimensional (91), preferably slidable vertically, in order to be able to adjust the position of the lower rollers (11, 12, 13). , 92). Means known to those skilled in the art can be arranged to direct the vertical movement of the lower support (14).

  The profiler line can comprise at least one work unit (10, 2a, 2b, 2c, 3a, 3b, 3c, ...), the position of which is vertical independently of the other work units Adjustable in direction. By adjusting the vertical position of at least one work unit, the set curvature of the profile machining element (P) can be set. For example, by lowering the position of one work unit relative to subsequent work units, the curvature of the upward concave surface can be set for the profile processing element (P), followed by the curvature of the downward concave surface. . In the downward concave section, the upper zone of the profile working element (P) is pulled. In particular, the zones of the longitudinal edges (E1, E2) have a stretched configuration with substantially no corrugation or very little corrugation.

  In a possible embodiment, the profiler line comprises an intermediate section comprising one or more work units. The intermediate section is rotatable about a horizontal axis (X) relative to a first preceding section comprising one or more work units. A rotating means (not shown) can be arranged to produce this rotation. The line further comprises a third section comprising one or more work units. The third section follows the intermediate section and its position is adjustable in the vertical plane. Thereby, the intermediate section can be rotated around the horizontal axis (X) and the profile is machined along the third section following the intermediate section with a substantially horizontal inclination which is anyway smaller than the inclination in the intermediate section of the line. Since the element (P) can be returned, the profile processing element (P) can be inclined upward. In this way, when passing from the middle section of the line to the third section, the profile processing element (P) undergoes a bending operation (the concave surface is upward). The entire zone of the edges (E1, E2) of the profiled elements (P) that are welded together is pulled into an elongated configuration with substantially no or very slight undulations. This facilitates the welding of the longitudinal edges and the structurally solid weld bead. The intermediate section may comprise a base that secures one or more work units. The base can be hingedly connected to the preceding work unit around a horizontal axis (X).

  For example, the finishing section (2) can be rotatable about a horizontal axis (X) with respect to the forming section (1). Thereby, the inclination of the second longitudinal direction (Y2) with respect to the first longitudinal direction (Y1) can be adjusted.

  As described above, the finishing section (2) can be inclined upward (several degrees). When entering the guiding section (3) following the finishing section (2), the profiled element (P) that is already tubular is bent and its concave surface is facing downward. Thus, the entire zone of the welded edges (E1, E2) of the profile working element is pulled into an elongated configuration with substantially no or very slight undulations. This facilitates the welding of the longitudinal edges and the structurally solid weld bead.

  In a possible embodiment, at least one of the finishing units (2a, 2b, 2c, ...) is rotatable about a horizontal axis (X) with respect to the forming section (1). In the illustrated embodiment, the finishing section (2) comprises a base (B2) to which the finishing units (2a, 2b, 2c, ...) are constrained, the base (B2) being the end of the forming section (1). The hinge is connected to the horizontal axis (X). For example, the base (B2) can be hingedly connected to the base part of the nearest molding unit (10). Alternatively, the molding section (1) includes a base (B1), to which the molding unit (10) is coupled. When viewed in the forward direction of the profile processing element (P), the front end of the second base (B2) can be hingedly connected to the rear end of the first base (B1). Actuator means known to those skilled in the art can be used for rotation of the finishing section (2) about the horizontal axis (X).

  The profile machine line can be provided with guide units (3a, 3b, 3c,...) That are vertically movable independently of one another. In other words, the vertical position of each guide unit can be adjusted regardless of the vertical position of the other guide units. Thereby, the set curvature in the vertical longitudinal plane can be given to the passing shape processing element (p). For example, in the same manner as already described for the finishing group (2), a predetermined curvature (its concave surface is downward) can be given to the profile processing element (P). Thus, the entire zone of the edges of the profiled elements (P) that are welded together is pulled into an elongated configuration that is substantially uncorrugated or has very little corrugation. This greatly facilitates the realization of longitudinal edge welding and structurally solid weld beads. The guide units (3a, 3b, 3c,...) That are vertically movable independently of one another are arranged in the finishing section (2), which can be rotated around a horizontal axis (X) with respect to the forming section (1). Can exist with or without presence. For example, when there is an upwardly inclined finishing section (2), the vertical position of the guide units (3a, 3b, 3c,...) Is bent downward by bending the profile processing element (P) downward. Can be adjusted to form a continuous curve with a concave surface. This pulls the edge of the profile processing element (P) constantly, giving an elongated straight configuration.

  The profile processing machine line can comprise, for example, guide means (5) arranged between the forming section (1) and the finishing section (2). The guiding means is configured to push the edges (E1, E2) of the profiled processing element (P) being processed towards each other.

  The guide means (5) shown schematically in FIG. 4 comprises a pair of shoes (51, 52) fixed against each other and positioned to contact two opposing zones of the article (P). It is preferable to provide. For example, the shoes (51, 52) are positioned so as to be in contact with the zone proximate to the edges (E1, E2) of the profile processing element (P) to be processed.

  In a possible embodiment, the shoes (51, 52) are coupled to a foot or support structure and are arranged at a set height (preferably an adjustable height). The shoes (52, 52) extend along a longitudinal direction generally parallel to the forward direction (Y). In a cross-sectional plane that is perpendicular and perpendicular to the forward direction (Y), the shoes (51, 52) are preferably inclined to converge towards each other.

  The shoes (51, 52) can be located, for example, in the middle line section between two work units. The edges (E1, E2) of the profile processing elements (P) passing there begin to tilt and approach each other. This facilitates the passage from the preceding work unit to the work unit arranged after the shoes (51, 52).

  For example, the shoes (51, 52) can be positioned between the forming section and the finishing section. The shoes (51, 52) are preferably coupled to respective supports (51a, 52a) that are movable horizontally and vertically, as schematically shown in FIG.

Claims (16)

A molding unit for a profile processing line, wherein at least one main section plane has a plurality of lower rollers (11, 12, 13) having an outer surface including a lower curve (P1), and the main section A plurality of upper rollers (21, 22, 23, 24, 24) having an outer surface including an upper curve (P2) substantially parallel to the lower curve (P1) in a plane. Characterized by the
Molding unit.   The molding unit according to claim 1, wherein the lower roller (11, 12, 13) indicates a rotation axis lying on the main cross-sectional plane.   The forming unit according to claim 1, wherein at least one of the upper rollers (21, 22, 23, 24, 25) exhibits a rotational axis lying on the main cross-sectional plane.   The forming unit according to claim 1, wherein the upper roller (21, 22, 23, 24, 25) is coupled to a support (20) movable in a vertical direction.   The forming unit according to claim 1, wherein the lower rollers (11, 12, 13) comprise a central roller (11) exhibiting a concave outer surface.   The lower roller comprises one or more side rollers (12, 13), each of which comprises a concave outer surface that matches the outer surface of the central roller (11) in the main cross-sectional plane. 5. The molding unit according to 5.   6. Molding unit according to claim 5, wherein the central roller (11) is motorized.   Molding unit according to claim 1, wherein the upper roller comprises a central roller (21) showing a convex outer surface.   9. A forming unit according to claim 8, comprising one or more side rollers (22, 23, 24, 25) exhibiting a convex outer surface. A profile machine line for realizing a profile machining element comprising a plurality of work units (10, 2a, 2b, 2c, 3a, 3b, 3c, ...), each of the work units comprising: Comprising two or more rollers having a shape and arrangement to form a specific curvature around its longitudinal axis in the profile processing element (P);
The line comprises at least one working unit (10, 2a, 2b, 2c, 3a, 3b, 3c, ...), the position of the working unit being vertically adjustable independently of the other working units A profile processing machine line for realizing profile processing elements.   An intermediate section rotatable around a horizontal axis (X) with respect to the first preceding section, and a third section following the intermediate section, the position of the third section being adjustable in a vertical plane A shape processing machine line for realizing the shape processing element according to claim 10, comprising a third section. A molding section (1) comprising a plurality of molding units (10) according to any one of claims 1 to 11 aligned along a first longitudinal direction (Y1),
A finishing section (2) following the forming section (1), comprising a plurality of finishing units (2a, 2b, 2c) aligned along a second longitudinal direction (Y2);
A plurality of guide units (3a, 3b, 3c,...) Aligned with each other and welding means (4) prepared to perform welding parallel to the longitudinal direction (Y). A guide section (3) following the finishing section (2);
With
Around the horizontal axis (X) with respect to the forming section (1) such that the finishing section (2) adjusts the inclination of the second longitudinal direction (Y2) relative to the first longitudinal direction (Y1). Characterized by being rotatable,
Profile processing machine line to realize section.   The finishing section (2) includes a base (B) to which the finishing units (2a, 2b, 2c,...) Are constrained, and the base (B) is at the end of the molding section (1). The profile processing machine line according to claim 12, wherein the profile processing machine line is connected in a hinged manner to the horizontal axis (X).   13. Profiler line according to claim 12, wherein the guide units (3a, 3b, 3c, ...) are vertically movable independently of one another.   13. Profiler line according to claim 12, comprising guide means (5) configured to push the edges (E1, E2) of the profile (P) towards each other.   16. Profiler line according to claim 15, wherein the guide means (5) comprises a pair of opposing shoes (51, 52) positioned to contact two zones of the article (P).

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