RU179191U1 - LAYING FOR PROFILING MILL - Google Patents

Abstract

The stand of the roll forming mill is designed to produce a bent profile from a coated sheet stock. The stand of the roll forming mill contains a bed with two parallel vertical posts, between which working shafts are mounted in the bearing units, with a drive to the lower shaft. The forming rollers are fixed on the working shafts and form a profiling gap. In the vertical racks between the bearing assemblies are liners, the size of which is determined by a given profiling gap between the forming rollers in accordance with the thickness of the workpiece. The technical result of the proposed stand roll forming mill is to improve the quality of the obtained bent profiles with a coating.

Description

The invention relates to the field of metal forming, in particular to the manufacture of profiles from a strip blank or coated tape in the rollers of a roll forming mill.

Known inventions No. 1796310 C. B21D 5/06, publ. 02/23/1993 and No. 2028847 class. B21D 5/06, publ. 02/20/1995, in which stands of roll forming mills are formed by forming rollers with closed profiling gaps. Forming rollers are located on horizontal working shafts connected to the drive. To change the center distance and the profiling clearance, horizontal working shafts with forming rollers are installed in movable carriages, the vertical movement of which is regulated by two lead screws.

Disadvantages of analogues: the difficulty of providing a given size with a closed profiling gap between the forming rollers.

The closest technical solution is the invention No. 2190490 cells. B21D 5/06, publ. 04/19/2000, which contains a profile stand with mounted on horizontal working shafts forming rollers with a closed profile gap. The horizontal working shafts are based on the vertical and horizontal mounting surfaces of the forming rollers, which greatly simplifies the provision of the specified size of the profiling gap.

The disadvantages of the prototype is the presence of contact on the horizontal surfaces of the rollers that serve as installation bases, and this, due to the difference in the linear velocity of the surfaces of the rollers, leads to profile slippage during shaping, which creates defects on the surface of the resulting coated profiles.

The technical result that can be obtained by implementing the proposed technical solution is to improve the quality of the obtained bent profiles with a coating due to the exclusion of slippage of the profile during shaping.

This technical result is achieved by the fact that in the stand of the roll forming mill for manufacturing profiles of coated sheet material containing a bed with two parallel vertical posts between which working shafts are installed in the bearing units, with a drive to the lower shaft, forming rollers mounted on the working shafts and forming a profiling clearance, in the vertical struts between the bearing assemblies are liners, the dimensions of which are determined by a given clearance between the forming rollers.

In FIG. 1 shows a cross section of the proposed stand roll forming mill.

The stand of the roll forming mill comprises a frame 1 on which vertical posts 2 are fixed. In each vertical column 2 in the longitudinal grooves are two bearing assemblies 3, in which the lower 4 and upper 5 horizontal working shafts are located. The lower working shaft 4 is connected to the drive of the stand (not shown in Fig. 1). On the working shafts 4 and 5, the lower 6 and upper 7 forming rollers are installed, forming a profiling gap 8. The spindles 9 are located in each vertical strut 2 for adjusting and fixing the bearing assemblies 3 in the longitudinal grooves of the struts 2. Between the bearing assemblies 3 are installed inserts 10, the size of which is determined by a given profile muzazorom 8 between the forming rollers 6 and 7.

The sequence of the manufacturing process of the bent profile in the proposed stand of the roll forming mill is that the preliminary adjustment is made on the vertical surfaces of the forming rollers 6 and 7 and the liners 10 between the bearing assemblies 3 with the selected setting fixed by the spindle screws 9.

In the manufacture of the profile, the movement to the upper forming roller 7 is transmitted through the workpiece in the profiling gap 8 from the rotation of the lower forming roller 6, the working shaft 4 of which is driven. Thus, slipping of the workpiece in the profiling gap 8 between the forming rollers 6 and 7 is excluded, there is no longitudinal effect on the surface of the workpiece, which improves the quality of the profiles made of strips or tapes with coatings.

In the Ulyanovsk NIAT JSC in Ulyanovsk, a GPS bending mill was manufactured, in the stands of which the proposed technical solution was realized, while in the process of manufacturing a steel cladding profile of the Blockhouse type with Printech coating and a decorative cladding profile made of stainless steel with a protective film layer ( certificate AISI430 Strips 0.70 × 116 430 (08X17) Parma + pl, TU RMO-001/05), no defects on the surface of the profile were found.

Claims (1)

A cage of a roll forming mill for manufacturing profiles of coated sheet material, comprising a bed with two parallel vertical posts, between which working shafts are mounted in the bearing units, driven by a lower shaft, forming rollers fixed to the working shafts and forming a profiling gap, characterized in that that in the uprights between the bearing assemblies are liners, the dimensions of which are determined by a given profiling clearance between the forming rollers.

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