RU2240195C1 - Line for making latticed shape - Google Patents

Abstract

FIELD: realization of inner, outer, heat insulation and spackling works in building while using perforated shapes.

SUBSTANCE: line includes arranged according to manufacturing process order: blank uncoiler; multi-stand shape-bending mill and shearing apparatus. Working stands of multi-stand shape bending mill are mounted in framework and they have common drive unit, lower stationary housings, upper movable housings in which drive shafts with working disc type tools are mounted. First working stand includes discs for forming in blank lengthwise central groove. Discs of second working stand are cutting discs and they are designed for forming notches. Discs of third working stand are in the form of cylinders with straight-line generatrix. Discs of next stands are toothed ones and they are designed for stretching out notches. Number of working stands of mill for stretching notches is equal to that of pairs of notch rows symmetrical relative to lengthwise symmetry axis of blank. Discs of working stands for stretching out notches are designed for forming cross section of latticed shape. Shearing apparatus of line may operate without interruption of motion of ready shape.

EFFECT: enlarged manufacturing possibilities, enhanced efficiency.

5 cl, 30 dwg

Description

The invention relates to the processing of metals by pressure, namely, automatic lines for the production of profiles.

Known lines and devices for them are described in the following sources of information:

“Production and application of bent sections of rolled products” / Handbook edited by I.S. Trishevsky. M .: Metallurgy, 1975, p.203-216;

“Production of bent profiles (Equipment and technology)” / edited by I.S. Trishevsky. M .: Metallurgy, 1982, p. 209;

“Equipment for the production of cold-formed sections of rolled metal abroad” (CINTIAM) - M.: Metallurgy, 1964.

The analogues of the line are known: SU 617121, SU 1586827, SU 1409385, SU 1098622, SU 1660811 from 07/07/91, SU 1791060 from 01/30/93, SU 1581427 from 07/30/90, SU 1098622, FR 2697765 from 05/13/1994.

A device for the manufacture of expanded metal mesh from sheet material containing a plate with a matrix installed on it, made in the form of a prism with a cutting edge, a material supply device and a punch, the device matrix is provided with guides and a clamp, and the punch is made in the form of a drive roller installed on rolling bearings, with prismatic protrusions located on its surface in a checkerboard pattern. In the drive roller, the prismatic protrusions on the roller are made on removable plate-rows mounted in the grooves of the roller, and the matrix is installed in the plate with the possibility of adjusting its position in the direction of the material supply axis (RU 2021062 from 15.10.94).

A known line for the manufacture of mesh fabric (GB 2200069 from 07/14/1988), including a matrix and punches, which are knives, forming a notch in the workpiece.

Known automatic lines for producing a perforated profile include those located in the technological sequence: roll unwinders, loop compensators, dies, roll forming mills, cut-off devices.

The closest analogue is the “Line for the manufacture of expanded metal mesh” RU 2117543, B 21 D 31/02, 47/02. The line consists of a slotting machine with an all-wheel drive slotting device with a block of knives for cutting-drawing a workpiece from a tape or strip, a drive mechanism and adjusting the position of the knife packs of the upper and lower shafts relative to each other in a cutting machine of a machine for stretching the mesh from a workpiece obtained on a cutting machine with a stretching device.

The disadvantages of this analogue include the impossibility of manufacturing mesh profiles.

The problem solved by the present invention is to create a line that allows you to produce mesh profiles on it, while automating the process of manufacturing the profile and its high quality with high line productivity and reducing the cost of the profile should be ensured, and the technological capabilities of the line should be expanded due to expanding the range of products.

The technical result is ensured by the fact that the location of the line aggregates and working tools of the stands of the roll forming mill is performed in the proposed technological sequence, which provides full automation of the process of manufacturing the profile, eliminates the occurrence of random defects in the geometry of the cross section, which in turn ensures high quality of the product.

Exclusion from the line of a press machine, punches for perforation, wastelessness, reduction of metal consumption for a product, unification of working stands of a roll forming mill can reduce the cost of the product and expand the technological capabilities of the line.

Smooth continuous operation of a roll forming mill common to all stands, an electromechanical drive and a continuous cutting device ensure the continuity and smoothness of the entire line, increasing productivity.

The proposed line design allows to expand the product range (for puttying) by adding one unified working stand for aligning the hoods of the mesh.

Due to the unified design of the working stands of a multi-stand roll forming mill having a common drive, the lower stationary housings and the upper movable housings, in which the drive shafts are equipped with working tools in the form of disks, changing the working tools with the stands of the roll forming mill allows you to make a different configuration of the cross section of the mesh profile ( e.g. corner, beacon).

The characteristic of the manufactured product is the angular profile. The angular mesh profile has two shelves oriented at an angle from 70 to 90 ° to each other; on each of them along the profile length, slots are formed, symmetrical with respect to the longitudinal axis of the profile, the rows of which are staggered with each row shifted by half a step. After drawing, the notches form a mesh ribbed surface with diamond-shaped cells. A transition section is formed at the junction of the shelves, having in section two parallel walls, conjugated by a cylindrical surface facing the outside of the profile and having a radius of about 1.9 mm. The distance between the walls is about 5 mm. In the area from 30 to 50% of the total length of the shelf, the profile surface is solid, and further to the edge of the shelf - mesh.

The characteristic of the manufactured product is the lighthouse profile. The lighthouse mesh profile has two shelves deployed in the horizontal plane, on each of them along the profile length slots are formed that are symmetrical about the longitudinal axis of the profile, the rows of which are staggered with each row shifted by half a step. After drawing, the notches form a mesh ribbed surface with diamond-shaped cells. A transition section is formed at the junction of the shelves, having in section two parallel walls, conjugated by a cylindrical surface facing the outside of the profile and having a radius of about 3.5 mm, the distance between the walls is about 7.5 mm. In the area from 10 to 15% of the shelf length, the profile surface is solid, and further to the edge of the shelf - mesh.

Corner and beacon profiles can be made of steel billets - galvanized tape, stainless steel tape, aluminum alloys, while the width of the tape is equal to the length of the shelf.

The invention is illustrated by drawings, which depict:

figure 1 - General view of the line;

figure 2 - unwinder roll cantilever type;

figure 3 is a view a in figure 2;

figure 4 - orienting device with a node counter feed tape;

figure 5 is a section aa in figure 4;

figure 6 - multi-roll forming mill;

Fig.7 is a view of B in Fig.6;

on Fig - view C in Fig.6;

figure 9 - working stand roll forming mill;

figure 10 is a section bb in figure 9;

figure 11 is a view of the workpiece in plan after applying cuts with cutting discs in the second stand of the roll forming mill;

on Fig - section DD in Fig.11;

on Fig - design of a cutting disk for applying notches;

on Fig - section CC in Fig;

on Fig - installation of the upper and lower packages with cutting discs on the shafts of the working stand;

in Fig.16 is a diagram of the placement of the upper and lower gear disks when extracting the cuts of one row of the workpiece;

on Fig - cross section of the workpiece at the exit of the first stand with the manufacture of a longitudinal gutter roll forming tool;

on Fig is a cross section of the workpiece with notches after the third stand roll forming mill;

on Fig.19-23 is a cross section of the workpiece when moving it along the stands of the roll forming mill from third to nineteenth in the manufacture of the angular profile;

in Fig.24 is a cross section of the profile of the angular mesh at the exit of the roll forming mill;

on Fig is a General view of the profile of the angular mesh;

Fig.26 is a cutting device;

in Fig.27 is a view of E in Fig.26;

on Fig is a fragment of a perspective view when drawing the upper and lower toothed discs of one row of notches of the workpiece;

on Fig is a side view of the lighthouse mesh profile;

on Fig is a view of the lighthouse profile in plan.

The line for manufacturing a mesh profile comprises: a console type unwinder 1, an orienting device with a tape feed counter unit 2, a multi-roll profile bending mill 3, a control panel 4, a cutting device 5, a receiving table 6, a hydraulic station 7, an electric drive 26.

The unwinder of the cantilever type 1 contains radially movable segments 11 of the drum 12 mounted on the shaft 13 in the bearing supports 14. The drum is designed to install a roll with a workpiece and fix it by pressing the axial displacement stops 16 to the stand 15, and the unwinder shaft has a tape brake 17.

An orienting device with a tape feed counter assembly 2 comprises two guide rollers 18 mounted on an arm; two orienting rollers 19, one before the tape enters the meter assembly, the other at the outlet, and the rollers are mounted in brackets with the ability to adjust both vertically and horizontally, depending on the level of tape feed. Said orienting device also comprises a lower roller mounted on the shaft 20 in the stationary bearing housings, and an upper roller on the shaft 21, the bearing housings of which can be vertically adjusted by the spring-loaded stops 22, i.e., adjust the clamping of the tape between the rollers. To fix a certain length of the workpiece, the orienting device on the upper shaft has an electric length counter that measures the movement of the tape 23.

The multi-stand roll forming mill 3 contains working stands 24, each of which performs a certain technological operation according to the transition scheme along the stands to form a cross section of the profile. The working stands have a unified design and are mounted on a common bed 25. There is an electromechanical drive 26 common to all stands, the rotation of which through the gearbox, clutch, gear transmission is transmitted to the gears with which all drive shafts of the working stands of the roll forming mill are equipped (Fig. 7, 8). The design of the working stands is unified, all parts are interchangeable. To adjust the technological dimensions, the working stand 24 has lower stationary housings 28 and upper movable 29, drive shafts 30 and 31 are installed in the housings on rolling bearings, which are equipped with working tools in the form of disks that perform sequential operations to form a mesh profile. In this case, in the first working stand, the tool forms a longitudinal central groove 32.

The second working stand has a working tool of cutting discs 33 - lower on the lower shaft, upper on the upper shaft. Disks with a thickness of 34 have recesses 35 with cutting edges 36, recesses are located around the circumference of the cutting disk with a step equal to the length of the recesses 37. The cutting part is the entire outer surface of the disk, and the recess provides a jumper between the recesses.

The disks are spaced from each other on the shafts by the thickness of the spacer rings 38.

In the third working stand, an “ironing” working tool is installed in the form of cylindrical disks, and a straight line forms the cylindrical surface of the disk.

From the fourth to the eighth stand on the upper and lower shafts of the stands, identical gear disks 40 are installed pairwise symmetrically with respect to the central axis of symmetry for drawing the notches. The placement of the disks on the shafts of the stands corresponds to the scheme of technological hobbies drawing of the notches with the successive displacement of the disks in each subsequent stand one step between the notches from the edges to the center, ensuring the formation of a continuous strip 46.

Changing the cross section of the workpiece during the drawing of the notches and the formation of paired notches 41, 42, 43, 44, 45 provide a working tool (toothed disks) stands from the fourth to the eighth (Fig.17-23).

Ninth to twelfth working stands comprise working roll forming disks, with the help of which the cross section of the angular mesh profile is formed (Fig. 24).

In the case of assigning a profile for puttying, an additional working stand is installed in the roll forming mill with a working tool in the form of cylindrical straight disks (rollers) to smooth the outer surface of the profile.

The automatic line contains a cutting device 5, on the housing 47 of which cylindrical guides 48 are fixed, along which the finished profile emerging from the roll forming mill moves (pushes) the carriage 50 on the rollers 49 from the initial position (extreme) in which it is located under the action of the load 53 on the cable 52 attached to the carriage, for a stroke equal to the length of the profile, to the pieces of it with knives 55 and 54.

The line has a storage table 6, a hydroelectric station 7, an electric drive 26 with a clutch and gear transmission in the stands.

The line works as follows.

The operating parameters of the profile, the mode of operation of the line are introduced into the software device.

The roll of tape is fed by a crane beam and mounted on the movable segments 11 of the drum 12 on the shaft 13, then the roll is fixed in the working position by pressing the axial displacement 16 by the limiters 16 to the posts 15.

The end of the tape is manually inserted between the guide rollers 18 of the orienting device 2, then, through the orientating roller 19, the tape is brought out between the lower roller 20 and the upper roller 21 through the orienting roller 19 to the profile bending mill to the cutting device 6. Then, using the control panel 4, the line is switched on in automatic mode work.

A preform in the form of a tape is moved from a roll mounted on an uncoiler of a cantilever type 1 to an orienting device with a counter unit for feeding a tape 2, a tape brake 17 is installed on the shaft of the uncoiler to absorb the flywheel moments when unwinding the coil.

From the orienting device, the workpiece is fed to the roll forming mill 3, where the electric drive 26 through the gear 27 to the rollers of the working stands makes further movement of the tape along the stands according to the transition scheme.

In the first stand, the working tool performs on the workpiece a longitudinal groove 32 with the initial parameters, which remain unchanged until stand 9.

In the second working stand, cutting discs 33 having a thickness indicated by 34, with cutting edges 37 (FIGS. 13, 14), intermittent cuts are applied to the workpiece with the number of rows of cuts equal to the number of disc pairs (upper and lower).

The step between the recesses on the disk determines the length of the notches 37. The distance between the disks determines the distance between the rows of notches 38 (11). The distance between the notches in the row determines the width of the jumpers equal to the width of the recesses 35.

In the second stand, a continuous strip of metal 46 is left on the workpiece on either side of the longitudinal groove.

In the third working stand, the working tool in the form of smooth disks “smooths” the notches for subsequent high-quality drawing.

In the fourth, fifth, sixth, seventh and eighth stands, working tools in the form of gear discs 40 produce a pair of notches with a row offset in each subsequent stand from the edge to the center of the workpiece 41, 42, 43, 44, 45, completing the formation of mesh diamonds to the calculated value of 61.

In this case, the number of working stands of the mill along the extraction of the cuts corresponds to the number of pairs of rows of cuts symmetrical with respect to the longitudinal axis of symmetry of the workpiece.

From the ninth to the twelfth stand, the working disks form the cross section of the profile to the specified design parameters of the angular parameters.

Thus, the profile has two equal shelves 63, oriented at an angle equal to from 70 to 90 ° to each other; on each shelf a continuous strip 46 is made, equal to from 30 to 50% of the shelf length, the remaining surface of the shelf is mesh with diamond-shaped cells 27 mm long and 10 mm wide. The rows of cells are offset by half a step. At the junction of the shelves, a transition section is formed, having two parallel walls 62 in cross section, between them a distance of 5 mm, a height of 1 mm, conjugated by a cylindrical surface facing the outside of the profile and having a radius of 1.9 mm.

On the automatic line intended for the release of the beacon mesh profile, make the readjustment of working tools by stands of the roll forming mill and perform the profile (Fig.29, 30) having two shelves deployed in a horizontal plane, on each shelf a continuous strip 46 is made, equal to from 10 to 15% of the shelf length, the rest of the shelf surface is mesh with diamond-shaped cells 27 mm long and 10 mm wide. The rows of cells are offset by half a step. A transition section is formed at the junction of the shelves, having in section two parallel walls with a distance between them of 7.5 mm, paired with a cylindrical surface with a radius of 3.5 mm.

The length of the profile is set based on the need to obtain a profile of a certain length.

Profiles can be made of steel or aluminum strip with a thickness of 0.4-0.6 mm.

A roll mill delivers a workpiece to a cutting device 5, which operates in a continuous “flying” cut option, that is, in the process of cutting a measured length, upon receipt of a command for a segment of a given length, for example 3 m, the hydraulic cylinder 51 located inside the carriage 50 drives the upper 55 and lower 54 knives, while the carriage 50 under the action of a moving profile (the profile pushes the carriage) moves along cylindrical guides 48 mounted on the housing 47.

After sections of the profile, the carriage 50, connected through the block with the cable 52, returns under the action of the load 53 to its original position, and since the profile continues to arrive, the operation is repeated. The return speed is regulated by the mass of the cargo.

The finished profile is served on the receiving table 6 for transfer to the packaging. The continuous cutting device does not reduce the productivity of the automatic line, as it does not interrupt the output of the finished profile from the roll forming mill.

Claims (6)

1. A line for manufacturing a mesh profile, comprising pre-unwinder workpieces, a multi-roll roll forming mill and a cutting device, characterized in that the working stands of the multi-roll roll forming mill are made with a common drive and have lower fixed bodies and upper movable bodies in which the shafts are installed with working tools in the form of disks, while the first working stand contains disks for forming on the workpiece a longitudinal central groove, disks the second working stand is made cutting and designed for the formation of notches, the disks of the third working stand are made in the form of cylinders with a generatrix in a straight line, the disks of the subsequent stands are serrated and designed to draw the notches, and the disks of the working stands located behind the working stands by drawing the notches, designed to form a cross section of the mesh profile, while the line cut-off device is configured to work without stopping the movement of the molded profile. 2. The line according to claim 1, characterized in that the cutting discs of the second stand are made with recesses that are located around the circumference of the cutting disc with a step equal to the length of the notches, while there are spacer rings between the disks providing a distance between the disks equal to the distance between adjacent rows of cutouts. 3. The line according to claim 1 or 2, characterized in that in the case of manufacturing a profile for puttying, an additional working stand is installed in the roll forming mill with a working tool in the form of a cylindrical disk with a generatrix in the form of a straight line to smooth the outer surface of the profile. 4. The line according to any one of claims 1 to 3, characterized in that each working stand for extracting the notches contains two pairs of gear disks symmetrically located relative to the central longitudinal axis of symmetry of the workpiece, and in each subsequent stand the pairs of disks on the shafts are offset from the edge to the center by the size of the step between the rows of cuts, and the number of working stands of the mill along the draw of the cuts corresponds to the number of pairs of rows of cuts symmetrical with respect to the longitudinal axis of symmetry of the workpiece. 5. The line according to claim 1, characterized in that it has an orienting device with a counter assembly, comprising two guide rollers and two orienting rollers, one of which is located before the tape enters the counter assembly, the other at the exit, and the rollers are mounted in brackets with the ability to adjust both vertically and horizontally. 6. The line according to claim 1, characterized in that the cutting device comprises a carriage, inside which a hydraulic cylinder and knives are placed, the carriage being movable by pushing it with a finished moving profile along horizontal guides in the direction of movement of the profile at the same speed, and in the opposite direction - under the influence of the force of gravity of the load attached to the carriage by a cable and regulating the speed of its return to its original position by its mass.

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