SU1282933A1 - Section-bending unit - Google Patents

Abstract

Isobstat1: does not refer to the processing of metals by pressure, in particular, to equipment for the manufacture of nanofiles in rolls of a special shape. The aim of the invention is to improve the quality of the profiles and the expansion of the variety of curved profiles. The rollformer unit contains a roll-up washer, a correct machine, scissors for trimming the end sections of the rolls. butt welding machine, cross cut incision knife but thickness, gauge of measured length, group of shaped stands, sectioning device, 1 profiles in length and control unit. A device for dividing profiles by length consists of rollers mounted one above the other, kinematically connected with the forming cells. The upper roller is placed in two swivel cages rigidly connected by a cross-bar. The sleeves rotate around a longitudinal axis parallel to the longitudinal axis of the upper roll and lying in the axial plane of the rolls. The control unit includes a stepper motor. e, 1ectrically connected with the measuring gauge d, 1i and kinematically - with one of the swiveling clips. The short output of the upper roll does not create an uncalibrated profile section along the length 2. h. the item of f-ly, 4 ill. F (L

Description

Yu

00 HS

OO with

The invention relates to the processing of metals by pressure, in particular to equipment for the manufacture of profiles in rolls of special shape.

The aim of the invention is to improve the quality of profiles and the expansion of the range of bent profiles.

FIG. Figure 1 shows the layout of the equipment for the roll forming unit; in fig. 2 is a device for calibrating and dividing profiles by length, section, view; in fig. 3 shows section A-A in FIG. 2; in fig. 4 shows a section BB in FIG. 2

The roll forming unit contains a spreader of 1 rolls, a straightening machine 2, scissors 3 trimming of the end sections of the roll, a butt welding machine 4, a scissors 5 of the transverse notch of the strip along the thickness, otherwise, sensor 6 of the dimensional length of the strip, a group of forming stands 7 and 8 , a device 9 for dividing profiles by length, a control unit 10 with comparators, a time relay and command devices for controlling the operation of scissors and a device for dividing by length.

The profile length separation device consists of beds 11 and 12, in which upper bed pillows 13 are installed, connected with pressure screws 14 and 15 mounted in covers 16 and 17 beds, bed pillows 18 and 19 of the lower roll 20 connected with support screws 21, elastic elements 22 and 23, associated with the lower roll cushions and installed in the cavity 24 and 25 beds, housings 26 and 27 of swivel holders, traverse plates 28 and 29 rigidly connected to each other, with covers 30-33 which are installed pressure screws 34-37 of the upper roll 38 and the additional top its roll 39. Elastic elements 40 and 41 are installed under the pushing screws, indicated in the cavity 42 and 43 of the pillows 44 and 45 of the upper and additional upper rolls. A bearing 46 of the shaft 47 of the intermediate I1 gearing 48 is engaged in the housing 26 of the rotary holder and meshes with the gears 49 and 50, which sit on the shafts 51 and 52 of the upper and additional upper rolls. The device for dividing the profiles along the length has a gear stand 53 connected with the gear stands of the forming stands of the aggregate and transmitting rotation through the spindle device 54 to the intermediate gear shaft and through the elastic coupling 55 to the shaft 56 of the lower roll. The rotary holder housing 27 is connected by a spindle 57 through a gearbox 58 to a stepper motor 59 connected via a control unit 10 to a sensor 6 of a dimensional length.

To simplify the setup of the unit, the device 9 for dividing the finished profiles is installed with the possibility of moving relative to the last stand 8 of the profile

side-mounted unit in the direction of movement of the profiles.

Profile bending unit operates as follows.

From the uncoiler 1, the workpiece 60 is fed to the correct machine 2, after trimming on the scissors 3 the rear end of the previous roll and the front subsequent one, these ends are welded on the butt-welding machine 4. After passing the measured length of the profile relative to the scissors 5, the cross section an incision of the workpiece and the sensor 6 starts counting the new measured length of the moving strip 60 from the place of the notch until

5 making the next notch from the condition of equality of the distance between the notches of the dimensional (required) length of the finished profiles 61. Sensor 6, and the moving roller, delivers the generated path signal to the block 10 in the capacitance of the voltage and when passing a path equal to the measured length, the total filed signal according to a given program-, me, the comparator of the unit Uchk / zet command is a new inclusion of scissors 5, and so on.

5 After the total signal from the 6-gauge sensor through the block 10 gives the command to turn on the scissors 5, it is through the time relay b. The iO control cabinet will give a signal to turn on the stepper motor 59 of the separation device

0 ready profiles. By setting the time relay of the control unit 10 and by moving the device 9, unit 0, stand 8, the notch is located at the time the profiles are divided approximately midway between stand 8 and troystvon 9. Work

 This device, controlled by the block W, is implemented as follows. All three rollers 39, 38 and 20 are kinematically connected with the rollers of the forming stands 7 and 8 and rotate continuously; 1 |) and the operation of the profile-making unit from the gear stand 53. In the separation device, the gauge through which the profile passes is formed by the bottom 20 and top 38 rollers having the appropriate configuration for calibrating the profile. In this case, the shaft 56 of the lower roll receives a collision through an elastic coupling 55 directly from the gear stand 53, which may be individually driven or driven from the shaft of the group drive of the mill. Upper swath 38

g is driven through shaft 51, gear 49, idler gear 48, and an additional upper roll 39 through shaft 52, gear 50 and idler 48 from the gear stand through spindle 54.

The profile is calibrated in

5 caliber rolls 38 and 20, having corresponding fbrmu, providing elastic compression of the metal in thickness and an increase in the bending angles of the elements.

It is also possible to partially calibrate the profile by longitudinal stretching due to a few large linear velocities of the separating device rolls compared to the linear velocities of the forming stands of the mill corresponding to the selection of gears or roll diameters. Adjusting, adjusting and setting the position of the gauge in the vertical plane can be done by vertical shifting of bed pillows 18 and 19 of the lower roll with screws 21 in the beds 11 and 12, movement of the housings 26 and 27 of the swivel clips with screws 34 and 36 of the covers 30 and 32, as well as movement pillows 44 of the upper roll in casing housings with screws 35 and 37 of covers 31 and 33. At the time of profile calibration, the lower and upper rollers are dololpite. The first upper roll 39 rotates through shaft 52, gear 50 and intermediate 11; taster1; 48 pt ( worn out cage, nahg) in the upper dix, diamet1) cial |; mouth; in | Oolozno.m top stick. )) Delg: P; 1rofp. : and but the length is necessary; p., places (1 upper roll 38, enter into coax | p; 1; e with lower bottom-full upper roll 39 in the period | 1 of the place of the cut: -, from the axial plane of the rolls nosle. June of the forming stand 8 before entering the separating device 9. This is ensured by the PCB, the holders of the total signal from the 6-dimensional dagchipcha d; the buses with the time relay in., The ocean 10 at the power plant.

Si) ia.l. to control ujar ofsbiM electrnodoh 59 to..will be dealt with T akim with the calculation so that d {} g: mnenie n upper roll 39 entered into conjugation from the bottom; roll 20 at the moment of engine; —1.1.ch — a cut from the axial n; the brightness of the last forming cement 8 mill; 5 -; (, about BXO / UI in device 9 gauge) azle. n) (}; | -i; i: i: ii but in length. Block 10, g:, :( and inclusive ;; tn; tag motor 59, which is | | through through; |) e; .u1chtor 58 and nshindel 57 turns cog p-mustaches 26 and -27 rotary oooibi, with three traversing 28 and 29, iiri one turn, G. e. by 360 °. With an atom at the moment of yivia of the rotation of the clips by 180 °, I lie; H hc H0 (;;; iv -, - its own: -; wrapped — 1O1; RH j.ono; iHHTe; ib .-: i5iJi roll, b; S (from 15e gct: configuration of the signal, forms the instantaneous; to the lower roll, the gap in to () or (;; m is set and the other compression is dunjun, gpO (|) or thicker. The other one is secured secure grip

11 |) () 1pI.1I 1P W: And 1

KTiMii; viOMCir about go ka.lnbrs ;.

at 7TOT the moment L i.ei OCH: 1р (; фи,; 1И i oceisbiNiii ii; irK K () (forms у, о; tsey K-iei pOHCTBi: ft axo ;;;,;

 ADDITIONAL Baj

once1) be them; MP and ICSC) is happening piJBOK I sit) the length in the area between

Pit and rolls last

i) drive (titelmo1 0 mouthA lOMCiiTOM rotating

masses of rolls and housings of the turn clips due to the different speeds of the nrofi5

0 0 o

5 5

five

l and the linear velocity of the rolls in the caliber of the separation device. At the moment of application of the longitudinal force, there is a notch at this site, where the profile will be divided over the length.

The magnitude of the longitudinal force created by the flywheel of the rollers with rolls is generally determined by the relationship:

(I)

p ll jii

Wav in

where m is the weight of the body of the rotary holder bodies with bearings and cross-arms, which are turned by the stepper motor, as well as the upper and additional rolls; B is the distance from the axis of novorot of the holders of the holders to the connector of the caliber of the lower and additional rolls; DU is the increment of the linear velocity given to the separated finished profile and defined by the formula

AV -Vi, (2)

where V a is the total linear velocity of the outer surface along the generators of the additional roll, folding out of the circumferential speed of rotation of the roll around its axis and from turning the housings of the swivel holders with a stepper motor; Vj is the linear velocity profile in the forming cells of the stack. The separation of the noble in length will occur in the event that ec; iH will satisfy the condition:

(e.

(3)

5 5

0

0

five

i.e. if the tension O is stretched by the longitudinal force P created in the nanofile, at the place of the notch in the residual uncut area F of the cross section will be greater than the strength of the material, 1a profile.

At the same time, the layer of the residual uncut but not the hollow metal section is determined by the formula: (8-Л5). (four)

where B is n irina blanks;

S - thickness of filing: L S --- g. 1ubina notch on toln1, ine.

For nrsdotvertsii. hard impact on the lower roll in at. The generation of the longitudinal force by an additional roller from the ground moment of the masses rotated by the engine and the increase in the dynamic effect of the separating force. The lower roll is fed forward a little but the course of movement of the profile by placing the 18 and 19 in the bed of the 24 and 25 beds II and 12 with the compression of the elastic elements 22 and 23, returning the pillow; in the initial position after the revolving of the cases of the rotary holders on the angle of the hospital is 18 (In other words, after the

additional top roll from the mating with the bottom roll.

The protection of the gear stand 53 and its drive when it is grouped from the shaft of the forming stands of the mill under impulse application of longitudinal force with a swing moment is carried out by an elastic coupling 55 absorbing the shock load.

After turning the stepper motor to the angle specified by the program, it stops, the clamps rotate 360 °, the upper roller will mate with the lower roller, and the additional roller will also take up its original position until the next activation of the stepper motor.

A short-time exit of the upper roll from the mating with the lower one does not create an uncalibrated section on the profile in length, since when a longitudinal separation force is applied, the profile section that went out of the last forming stand from the moment the upper roll leaves the lower one to the matching one is calibrated by stretching. with the last additional top roll.

The proposed construction of the profile-forming unit is efficient, its use provides for an increase in the quality of the bent profiles, expansion of the range and an increase in productivity compared to the basic object.

So, on the basis of measurements during the development of a corrugated profile 1185 X 12 XX 3 mm from steel 09Г2 at the mill 1-4X 400-1500 with a single process of profiling with cutting to the measured lengths of the workpiece before molding and experimental data on the division into dimensional lengths of the finished profile with modeling of the continuous process of profiling, which was carried out on the proposed m profile-bending m unit, it was found that at the specified bending unit the length of terminal defects was 280-300 mm, they were absent on the proposed one, the cut accuracy and the length in the first case component la + (40-60) mm, the new design of roll forming unit does not exceed + (18-20) mm.

The magnitude of the longitudinal deflection was 0.15-0.2% of the length of the profiles on the specified unit; when changing the stretching, as on the proposed unit, its value did not exceed 0.05-0.07% of the length, This waviness of the side shelves decreased from 12-15 mm to 3-4 mm per 1 m length. The width difference in length from ± 8 mm decreased to ± (1.5-2.5) mm.

In addition, the introduction of the proposed roll forming unit will allow the assortment to be expanded by mastering the production of profiles, which must be divided by length into measured lengths in a finished molded form. These are profiles of the type of thin-walled closed welded, corrugated and others with closed welded flanges, corrugated with a bending angle of 90 ° or more, with flanging in different directions, with corrugations in both directions, thin-walled with a large height of corrugations, corrugated from high strength and stainless steels. In addition, the application of the proposed roll forming unit will provide an increase in productivity due to cutting finished profiles on the go at speed

C profiling (150-180 m / min).

Claims (3)

1.Profigibochny unit containing a coil unwinder, a device for 0 transverse incision of the strip in thickness, a gauge of length, a roll forming mill with forming stands and a device for dividing the finished profiles along the notch installed behind the last forming stand, characterized in that, in order to improve the quality of the bent profiles by providing calibration end sections and reducing the longitudinal deflection, as well as the expansion of the range of curved profiles, the device for dividing 0 or finished profiles is made in the form of a cage with one roll gauge installed in the beds one above the other Ams, kinematically connected with the rolls of the forming stands, rotary collars in which the upper roll is placed, with a cross-beam, rigidly interconnected mentioned clips mounted rotatably around an axis parallel to the longitudinal axis of the upper roll and lying in the axial planes of the rolls, and a stepper Q electric motor, electrically connected with a sensor of measured length and kinematically connected with one of the rotary arms. 2. The unit according to claim 1, characterized in that the device for dividing the finished profiles is provided with an additional top 5 gage roll mounted in rotary holders symmetrically to the upper roll relative to the axis of rotation of the clips and kinematically connected with it. 3. The unit on the PP. 1 and 2, characterized in that in the device for dividing the finished profiles, the upper rolls are displaced in the cages in a direction radial relative to the axis of rotation, and the lower roll is displaced in the direction of the profile axis and spring-loaded to the frame. 0 j 45 ev 67SS - jj - If - g / I W J4- 30 50 52 33 28 /, // / / / / / D lr 55 five" k 48 3 sr 55 -J / rv 35 5tf -rJ -jJ 75, W, yes 5 Xja // I 2 22. one 32 7 J6 r r .77 .7 th five 7 18 J Ll / Mlb .. Cpl /. No , 77 3, "7 51 56 rf l / ;. -W th-- --J7 -g 5-6