SU603462A1 - Profile-bending mill - Google Patents

Description

one

The invention relates to the processing of metals by pressure, in particular to the profile bending of sheet metal, and can be used for the manufacture of contoured profiles from sheet blanks with non-parallel edges having a longitudinal axis of symmetry.

A multi-roll profiling mill for bending metal profiles made of metal tape is known, containing a base on which stands are housed with a roller bending tool connected with an electric drive by means of working spindles and an input guide table with vertical guide rollers i. products with different widths.

Also known is a bending mill for bending from metal tape shaped profiles, comprising a base on which stands are housed with a roller bending tool kinematically connected with

electrically driven by working spindles, an input Guide table with vertical guide rollers and intermediate tables mounted between the stands and having vertical guide rollers 2j.

The disadvantage of a profiled mill is the impossibility of profiling sheet blanks with non-parallel axial edges.

To enable the profiling of sheet blanks with non-parallel ossimetric edges, the roll forming mill is equipped with mechanisms for self-centering vertical guide rollers, interconnecting pairwise vertical guide rollers forming the roller sections, and mounted on the entrance table and on. one intermediate table, located between the first and second cell ..

Claims (2)

In addition, each mechanism for self-centering is made in the form of two sliders, associated with respective rollers, interconnected by springs, mounted on sliders of the rails and the central shaft, connected by engagement with the slats. FIG. Figure 1 shows schematically the assembled section bending mill, the operational view (in two projections); FIG. 2 shows a section A-A in FIG. 1 (in two projections). The proposed roll forming machine contains a base 1, on which a block of 2 stands is mounted, HNferauiHfi several nopopko pairs of wiring 3, kinematically connected with the electric drive 4j, the input guide table 5, composed of vertical roller-type self-centering sections 6, Between which, horizontal-jib (supporting) sections 7, 8 are installed, table 5, under sections 0 and 7, has mounted a sliding mechanism 8 with a self-erecting device on the edge of the workpiece with a single strap. In the mill, between the first and second pair of work rolls 3 3, the table 9 is intermediate, equipped with self-centering sections 6, and between the next pairs of work rolls, tables are placed between the two. 10 with vertical rollers adjusted and fixed to the width of the workpiece defined for this position; For the last pair of work rolls 3, a table 11 is mounted with output strips 12, Roller self-center of the IRU section 6 consists of a housing 13, in the walls of which there are fixed guide pins 14 passing through holes in the sliders 15, on which axles 16 with vertical rollers 17 are mounted , In the lower part of the sliders 15, there are fixed IS rails which engage with gear 19 mounted on the axis 2O in the plate of the housing 13 ° In the plane of the guide skallers 14 the sliders 15 are strutted to the center by tension springs 21 Utah 22. On the bottom plate of the housing 13 there is a movable stop 23, which limits the movement of the sliders 15 to the center. The operation of the roll forming bending mill is as follows. Preset set on. table 5. When turning on the electromotive drive 4, the torque is transmitted along the kinematic chain. to the work rolls 3, the rollers 17 of the self-centering sections 6 are pre-orienting the workpiece along the axis of symmetry due to the springs 21. which draw the sliders 15 to the center, and the stops 2 3 maintain the distance between the axes 16 in each section 6, respectively, equal to the size, several smaller in size - the workpiece in this cross section. In order to finally orient the axis of the workpiece, the sliding mechanism 8 is actuated, which pushes the workpiece between the rollers of sections 6 and 7 and finally orients the axis of the workpiece, then serves the workpiece to the first pair of rotating work rolls that capture it Vapkov surfaces and the material to be profiled, and transferred to the next pair of forming rolls, etc., until the required profile is obtained. Horizontal section rollers 7. Before the transverse bending of the workpiece when pushing it with the gate 8. Since the first pair of work rolls is cylindrical j and does not produce shapes of MO formation, the self-centering sections 6 are re-installed, which can not be used at subsequent positions of the mill. Claims of the invention: A roll forming machine for the manufacture of profiles from sheet blanks, comprising a base on which cages are placed, with a roller bending tool, nematically connected to an electric drive by means of working shafts, an input guide table with vertical guide rollers and intermediate tables installed between the cells with vertical guide rollers, characterized by the fact that, in order to ensure the possibility of profiling sheet blanks with non-parallel isymmetric edges, it is equipped with mechanisms for self-centering vertical guide rollers, connecting between, in pairs, vertical guide rollers, forming roller sections, and mounted on the entrance table and Ya one intermediate table, placed between the first and second stands. 2. Device A subclause 1, characterized in that each mechanism for self-centering is made in the form of two sliders, connected with respective rollers, interconnected by springs, mounted on slide rails and central gears Associated engagement with the racks. Sources of information taken into account in the examination; 1. USSR author's certificate number 91423, cl. On 21 D 7/08. 04.04.49. 2. Davshov VI and Maksakov MP. Production of curved thin-walled profiles, M., 1959, p. 29, FIG. 24 .. one / X / l "Ttri