RU2755138C1 - Installation for profiling metal tape - Google Patents

Abstract

FIELD: metalware production.

SUBSTANCE: invention relates to the processing of metals by pressure, in particular to the profiling of a metal tape. The equipment for profiling metal tape contains a housing, a roll holder, a plate with guides, in which several pairs of profiling rollers with the possibility of movement are installed, and a pair of supporting rollers. The housing is made in the form of a frame horizontally mounted on supports, with a plate fixed on it with rectilinear guides made in a horizontal plane, and two pairs of profiling rollers located in them with the possibility of moving relative to the plate. One pair of supporting rollers and two pairs of profiling rollers are fixed to the plate. In addition, eccentric bushings are introduced into the fastenings of the mentioned rollers, providing the necessary distance between the axes.

EFFECT: technological capabilities are expanded, productivity is increased, the quality of manufactured products is improved and the installation dimensions are reduced.

1 cl, 9 dwg

Description

The invention relates to the processing of metals by pressure and can be used in the conditions of serial and small-scale production.

There is a known line (RU 2290274, Demyanov B.K. et al., IPC B21D 5/06, 2006) for the manufacture of parts from a metal strip by bending, including a drive and an unwinding device installed on a bed in the course of the technological process, a correct assembly, a feed mechanism tapes for cutting, scissors and a tape bending device with a bending mechanism.

The disadvantages of the known installation include the fact that it does not allow the production of spiral parts with the ability to change the diameter of the spiral and the depth of the profile.

It is also known, a device (RU 2148454, Kolganov IM and other IPC B21D 7/00, B21D 5/06, 1999) for the manufacture of profiles, containing installed on the bed in the technological sequence forming stands and placed between them a pulling stand, including roller pairs with a profiled closed gap between the rollers and a drive in the form of gears located in the same vertical plane mounted on the roller shafts, the drive gears of the upper and lower shafts of all stands are made with a different number of teeth, with the possibility of meshing with each other and are connected by parasitic gears in a single kinematic chain.

The disadvantages of the known installation include the fact that it does not allow the production of spiral parts with the ability to change the diameter of the spiral and the depth of the profile.

The closest installation for the profiling of the tape is the installation (RU 2279941, Avdeev V.V. et al. B21D 11/06, 2004), which includes interconnected roll and body in the form of a vertically oriented welded plate with arcuate and rectilinear guides. Several pairs of profiling and winding rollers and one pair of supporting rollers are installed in the body.

The disadvantages of the known installation include the fact that it has large overall dimensions. Also, profiling takes place first, and only then the bending of the finished profile. Also, there is no way to adjust the distance between the axes of the rollers.

The objective of the present invention is to expand technological capabilities, increase productivity, improve the quality of manufactured products and reduce the size of the installation.

The technical result achieved by the invention consists in the fact that due to the calibration of the eccentrics and the simultaneous process of profiling and bending of the forming profile, an increase in the quality of the manufactured products is achieved. The range of sizes of manufactured products has been expanded. The reverse stretching process ensures profile stability and reduces the likelihood of profile defects.

The essence of the proposed installation for profiling a metal strip, containing a body, a roll, a plate with guides in which several pairs of rollers are installed with the ability to move, a pair of supporting rollers is that the body is made in the form of a frame horizontally mounted on supports and a plate fixed on it with rectilinear guides made in a horizontal plane, located in them by two pairs of profiling rollers with the ability to move relative to the plate, one pair of supporting rollers and two pairs of profiling rollers are fixedly fixed on the plate, eccentric bushings are additionally introduced into the roller mounts providing the required distance between the axes.

The invention is illustrated in nine drawings: a top view of the unit (Fig. 1), a bottom view of the unit (Fig. 2), a pair of supporting rollers (Fig. 3), a pair of profiling rollers (Fig. 4), a pair of profiling rollers (Fig. 5 ), a pair of profiling rollers (Fig. 6), a pair of profiling rollers (Fig. 7), an eccentric bushing (Fig. 8), an eccentric bushing (Fig. 9).

The installation for profiling the tape (Fig. 1) contains a welded body 1 in the form of a frame, mounted horizontally on supports 2, plate 3 with rectilinear guides 27 made in the horizontal plane of the plate is attached to the body.

A roll box 4 with a metal strip (not shown) is attached to the body 1.

On the plate 3 are installed (Fig. 2) a pair of supporting rollers 5, a pair of shaping rollers 6, a pair of shaping rollers 7, fixed motionlessly relative to the plate 3. A pair of shaping rollers 8, a pair of shaping rollers 9 move along the rectilinear guides 27 along the plate 3.

A pair of supporting rollers 5 are installed on the axle 10 and axle 11, a pair of profiling rollers 6 are installed on an axle 12 and an axle 13, a pair of profiling rollers 7 are installed on an axle 14 and an axle 15, a pair of profiling rollers 8 are installed on an axle 16 and an axle 17, a pair of profiling rollers 9 are installed on axle 18 and axle 19. To transfer torque between the links of the system on axle 10, axle 11, axle 12, axle 13, axle 14, axle 15, axle 16, axle 17, axle 18, axle 19, gear wheels are installed 20, sprockets 21 are installed on axle 10, axle 12, axle 14, axle 16, axle 18. In pairs of profiling rollers, the moment is transmitted by gear wheels 20, between the pairs the moment is transmitted by means of a chain drive 22, a chain drive 23, a chain drive 24 and sprockets 21. The torque is supplied to the axis 15 from the drive 25.

The unit also contains a control panel 26.

The installation works as follows.

Before work, the position of the pairs of profiling rollers 8, profiling rollers 9 is corrected by moving them relative to plate 3 along rectilinear guides 27 to obtain a spiral turn of the required radius.

A tape with a thickness of 0.1-0.4 mm and a width of 5-100 mm is installed in the roll 4, the drive 25 is switched on from the control panel 26, the torque is supplied to the axle 15, the sprocket 21 mounted on the axle 15 transmits the torque through the chain transmission 23 to a pair of shaping rollers 9, a chain drive 24 for a pair of shaping rollers 8. Torque between axle 10 and axle 11, between axle 12 and axle 13, between axle 14 and axle 15, axle 16 and axle 17, axle 18 and axle 19 is transmitted by toothed wheels 20. Sprocket 21 mounted on axle 14 transmits torque through chain transmission 22 to a pair of support rollers 5 and a pair of profiling rollers 6. The tape is fed into a pair of support rollers 5, which provide tape feed and preliminary straightening (Fig. 3). In a pair of profiling rollers 6, the tape is profiled into a dome-shaped profile (Fig. 4), in a pair of profiling rollers 7, the profile begins to stretch in the opposite direction (Fig. 5), in a pair of profiling rollers 8 (Fig. 6) and a pair of profiling rollers 9, the tape is profiled into the finished profile by reversible drawing (Fig. 7) and obtains a given radius of the finished spiral.

To regulate the force of the rollers pressed against each other and to create belt tension, eccentric bushings are provided on all pairs of rollers (Fig. 8, Fig. 9).

The installation works in continuous mode. When a sufficient number of turns are formed, the tape is taken from under the installation, cut and welded at the place of the cut to obtain rings from the resulting profiled tapes.

Example. The planned multifactorial experimental studies have been carried out to establish rational geometrical dimensions of profiling rollers when profiling a pilot batch of a metal strip with a thickness of S = 0.1 ... 0.4 mm, an outer diameter in the range of D = 50 ... 1500 mm from stainless steel.

Preliminary studies have established that the main defects are that the tape bends in a wave-like manner, or the tape leaves the intended trajectory of movement.

As a result of processing the results of multifactorial experiments, a rational sequence of profiling tool contours, shown in Fig. 3, fig. 4, figs. 5, figs. 6, figs. 7.

As a result of using the proposed installation, the technical possibility of using the profiling operation for a thin metal strip has expanded.

A comparative analysis of the obtained values of defects with defects corresponding to profiling with a conventional tool showed that during the profiling of the tape, the magnitude of wave formation decreased by 1.7 times, the departure from the intended trajectory - by 1.5 times.

The invention allows to increase the productivity of the installation in the production of edging for flat flange gaskets by winding a continuous spiral of a given profile and quick readjustment of the installation to obtain a spiral from a profiled tape of various diameters, improve the quality of the profiled tape, and also reduce the size of the installation, reduce the number of rejects, increase the stability of the profile when profiling.

Claims (1)

Installation for profiling a metal strip, containing a body, a roll, a plate with guides, in which several pairs of profiling rollers are installed, and a pair of supporting rollers, characterized in that the body is made in the form of a frame horizontally mounted on supports, with said plate with guides, made rectilinear in the horizontal plane, and located in them by two pairs of profiling rollers with the ability to move relative to the plate, moreover, the said pair of supporting rollers and two pairs of profiling rollers are fixed on the plate, and eccentric bushings are additionally introduced into the mountings of the said rollers, providing the required distance between their axes.

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