SU1138284A1 - Automatic machine for assembling and welding centrifugal fan - Google Patents

Abstract

. A machine for assembling and welding centrifugal fan shields containing base-mounted live rolls for feeding the plating sheet, a correct feed mechanism for the plating sheet, equipped with a driving drum and welding heads for welding internal welds, welding heads for welding external welds and a manipulator , made in the form of a pivotally mounted on the base of a fork with plates attached to the ends of its teeth with attachments for the side walls and flanges of the casing, installed with the possibility of longitudinal res Still, in order to expand technological capabilities and improve iU ::: -: -: ts, l: Tf: - BKB.; Yr5G p. performance by providing automatic lateral orientation. walls to: ears and sidewall and flange loading during assembly and welding of enclosures with two-sided and one-sided air inlet and output flange, the machine is equipped with multi-position magazines for side slider and flanges mounted on a base symmetrically relative to the longitudinal axis of the roller table mounted on an axis of the conveyor table lifting table with clamps for the output flange ,. the driving drum of the correcting-feeding mechanism is implemented in the form of two coaxial rollers (L equipped with interchangeable nozzles and installed with the possibility of independent and synchronous rotation and serial connection with the corresponding peak for each of the peak mechanism for loading and the face plate of the manipulator, at the same time, faceplates are made with air nozzles and equipped with electric bikes and are mounted at the ends of the fork with air that can be tilted, they are coaxially mounted to one another and connected to the end of the drive drum rollers.

Description

The invention relates to welding, in particular, to devices for assembling and welding articles with a curvilinear generatrix, in particular casings of centrifugal fans with one-sided and two-sided air inlet.

A device for assembling and welding the shells of centrifugal fans is known, comprising a roll-up mounted on the base for feeding sheet plating, a correct feed mechanism for the plating sheet, equipped with a driving drum and welding heads for welding internal welds, welding heads for welding external welds and a manipulator, made in the form of a fork hinged on the base with 1 gpanshiba fixed on its ends with clamps for side walls of the casing and flanges of the casing installed with the possibility of longitudinal res Still Cl

However, the known device provides only assembly and welding of the case with a two-way air inlet, orientation, joining and supplying to the welding area of the case elements is done manually.

The aim of the invention is to expand the technological capabilities and increase productivity by ensuring the automatic orientation of the side walls of the casings and the loading of the side walls and flanges during the assembly and welding of the casings with two-sided and one-sided air inlet and the discharge flange.

The goal is achieved by the fact that the automatic machine for assembling and welding the shells of centrifugal fans, containing mounted on the base of the live rolls for feeding the sheet piping, the correct feeding mechanism for the covering sheet, equipped with a drive drum and welding heads for welding internal welds, welding heads for welding of external seams and a manipulator, made in the form of a hinged mounted on the base of the fork with face plates fixed to the ends of its teeth with clamps for side walls and flanges of the casing installed with the possibility of longitudinal movement, equipped with multi-position magazines mounted on a base symmetrically relative to the longitudinal axis of the roller table to the side walls and flanges with a mechanism for loading the manipulators faceplate and a lifting table mounted on the axis of the roller table with clamps for the output flange; coaxial rollers equipped with interchangeable nozzles and installed with the possibility of independent and synchronous rotation and sequential connection sootvetstvukschimi with each of them a mechanism for loading and chucking the manipulator, wherein the interchangeable faceplate vsholneny and electro-snablseny and mounted on the ends of the fork with vozmozh11ostyu nayuyuna, fitting them coaxially with one another compounds of the drive drum ends clips.

Fig. 1 shows a device for assembling and welding, a general view; in fig. 2 - the same, top view; FIG. 3 is a section A-A in FIG. one; on fil. 4-device: when welding lisga-plating with side walls; in fig. 5 - also for the welding of the output flange; fig 6 is the same, top view; in fig. 7 is a section bB in FIG. 6 in FIG. 8 — node t in FIG. 7; FIG. 9 shows the node t I in FIG. 2; in fig. 10 is a section bb of FIG. 3; FIG. P is a view of FIG. ten; in fig. 12 - unit 1M on (| KNG, 1; in Fig. 13 - a section dD in Fig. 3; in Fig. 14 - the same, when welding sheet plating with side walls; in Fig. 15 - section eE on Fig. 5; Fig. 16 shows the assembly IV in Fig. I; Fig. 17 shows the pneumatic diagram of the device; Fig. 18 produces a casing with a double air inlet; Fig. 19 shows the same, with one-sided air intake; in Fig. 20 node V in Fig, 19.

Device: assembly and welding of centrifugal fan shields with single-sided and double-sided air intake contains mounted on base 1 roller table 2 for feeding sheathing sheet 3, scissors for measuring cutting sheathing sheet (not shown), sheet supply mechanism 4 - coverings 3 and manipulator 5.

Symmetrically with respect to the longitudinal axis of the roller table, positioning stores 6 are installed for side walls 7 -and 8 and flanges 9 with mechanism 10 for loading, and

the axis of the roller table mounted table 11 for the output flange 12.

The correct-feeding mechanism 4 comprises a driving drum 13 mounted on the base, a double-shouldered lever 14, pivotally mounted on the base with rotational drive 15 executed in the form of a power cylinder, guide rollers 16 with drives for the outer surface of the side walls 7 and 8, mounted on one on its shoulder rollers I7 for rolling sheet-covering 3, mounted on the second arm of the lever pressure rollers 18 and carriage 19 with guided rollers 20 for the inner surface of the side walls 7. and 8, as well as mounted on .ezhke two welding heads for welding of the joints. The double-shouldered lever 14 is provided with a window 2I for inserting the sheathing sheet 3. On the base, two welding heads are mounted for welding external seams (not shown). The manipulator 5 is made in the form of a pivotally mounted on the base of a fork 22 with a drive 23 of its inclination, made in the form of a power cylinder. The tooth of the fork is made in the form of a bracket 24 rigidly fixed on its shelf and a lever 25 pivotally mounted on this bracket with a drive 26 (power cylinder).

At the ends of the forks, the faceplates 27 are mounted, installed with the possibility of longitudinal movement by the power cylinders 28, the inclination of the leads 26, and their installation coaxially with each other. The plates 27 are made removable and can be made in the form of crosses 29 when the side wall 7 is mounted on them with a flange 9 and in the form of plates 30 when mounted on the side wall 8 without a flange (when welding the casing with one-sided entry).

The crosses 29 are provided with clamps 31 for the side walls and flanges, with their actuators 32. Both faceplates are equipped with electric brakes 33, drums 34 mounted on the hubs of the faceplates, and the plates 30 are equipped with electromagnets 35 and a centering pin 36.

The drive drum 13 of the mechanism 4 is designed in the form of two oooss rollers 37, equipped with interchangeable nozzles 38, used in the assembly: the side wall 8 without flange and friction disks 39.

Table 11 is mounted for lifting by a power cylinder 40 with cams 41, and is equipped with clamps for an output flange 12, made in the form of clamping levers 42, connected to the cylinder 40.

Multi-station magazines 6 are made in the form of batch accumulators for flanges 9 and side walls 7 and 8 and are connected to conveyor carriages (not shown).

The loading mechanism is made in the form of a head 43 mounted on a shaft with an electromagnetic clamp for casing elements, a four-position Maltese mechanism 44 connected by means of a shaft 45 to a coupling 46 with the front end of a driving drum 13, a copier 47 and a copy roller 48 with a 49 drive. movement.

Dp of rotation of faceplate 27 when they are horizontal on shaft 45, coupling 50 is mounted with gear 51 driven by actuator 52, and gear 54 and chain transmission 55 are mounted on shaft 53.

The movement of the coupling 46 is made by the actuator 56 by means of the lever 57.

The device is provided with an accumulator 58 for output flanges 12 interacting with scissors (not shown) when cutting the skin-sheet 3.

To automate the operation of the device, it is equipped with a switch sensor 59 mounted on the fork of the manipulator 5, to turn on the electric brakes 33, mounted on the base of the switch 60 to control the power cylinders 28, the switch 61 to stop the plating sheet 3 mounted on the head 42 of the mechanism 10 for loading, by the switch 62, on the shaft 41 by the switch 63, and on the chuck 27 by the switch 64.

On the basis of the set stop 65 dp switch 63.

The pneumatic circuit of the device includes pneumatic throttles 66, a reducing valve 67, and electropneumatic distributors 68-73.

The device works as follows.

In the initial position for welding the casing with a two-sided entrance, batch drives, magazines 6 with side walls 7 and 8 are installed between the heads 42 of the mechanism 10 for loading. The end of the lining sheet 3 is laid on the live rolls 2 and a window in the lever 14 is inserted between the drum 13 and the raised drive 15 and the pressure rollers 18 .. The fork 22 is raised, the faceplates 27 are divorced by cylinders 28 and are braked, the clamps 31 are off. To install the side walls 7 and B while simultaneously rolling the skin 3, they turn on the drive 26 and lower the faceplates 27 to a horizontal position. In this case, the shafts 45 by means of the coupling 46 are connected to the ends of the drum 13 by turning on the drive 56 with the lever 57. Turn on the drive (not shown); rotating the drum 13 and the drive 15, clamping the rollers 18 to the drum and rolling the sheet-plating. At the same time, the side walls 7 and 8 and the flanges 9 are placed on the faceplates 27 by the mechanism 10. The side walls on the accumulators are pre-oriented to ensure that they are mounted on the sleeves 27 in the appropriate position relative to the fork. When the side walls are mounted on the faceplates, their microscopes interact with the switch sensor 59, which includes electric brakes 33 for fixing the side walls on the faceplates in an oriented position and deactivating the rotation of the drum 13. When the surface of the side walls is pressed on the switch 64, they are clamped by the clamps 31 or electromagnets 35. During the installation of the side walls and flanges on the faceplates, the skin sheet will roll over to a certain length. Then, the actuator 26 is turned on and the faceplates 27 with the side walls are placed in a vertical position, while the shafts 45 are disconnected from the drum 13, the taper-45 tans the welding heads to the point W, and the rollers 16 are separated by the actuator. torus 5 all the way into the switch 60, which includes the power shchinda 50 and provides clamping of the faceplates to the ends of the drum 13. When the brakes of the drum 34, turn on the welding heads and the rotation of the drum 13 and weld 55 ring welds, weld the flanges 9 to side walls 7 and 8. Welding Cored oil girth welds is carried out at

rollers 20. In this case, rolling the horizontal position of the faceplate by rotating them by means of the shaft 53 and pinching gear 54. When welding the outer circumferential seams, the sheeting is being rolled simultaneously. When welding enclosures with one-sided air inlet or different flanges, the side walls are welded sequentially. To do this, lift the rollers 18 and the unlocked rollers 37 of the drum 13 and rotate the faceplates with pa3jra4HbiMH speeds. After welding, the side walls are oriented in the agreed position for welding them to the sheeting. Since the welding of flanges 9ic with side walls is done in one or. for two (with successive welding of flanges of different diameters) faceplate turnover, it ends at the same point from which it began, i.e. in the position of the side walls relative to the plug 22, when welding them with plate molding, where they are again fixed by electromotor brakes 33 with the drum stopped, 13 interacting the side walls with the sensor switch 59. After welding the annular welds, the faceplate 27 is retracted by cylinders 28 from the drum 1.3 and coordinated the position of the side walls raise the cylinder 28 to the point O (Fig. 4). The welding heads are then lowered to points I. Turning on the drum 13, they finish rolling the skin sheet, when cutting it to size with scissors, from the accumulator 58 is placed on / the output flange 12. It is transported with the skin sheet all the way to the carriage 19, orients at the same time, and then at the exit of the end of the skin sheet, it is laid on the table 11 while awaiting welding. The end of the lining sheet after the laying of the flange 12 interacts with the switch 61 and is okhlanavlyaetsya in the position of the beginning of its welding with the side walls. Lifted to the point 62 faceplates with side walls are reduced to the width of the welding with sheet-covering by cylinders 28 and lowered by drive, 23 onto the sheet-covering at points I. Then bring rollers 16 to the ends of the side walls, ensuring their directional movement together with the sheet The sheathing with a variable radius is effected, for example, by controlling the mechanism 4 according to the program, both during the installation of the side walls and during and after the welding of ring seams. Thereafter, the side walls are welded to the sheathing both by moving the welding heads and by rotating the side walls that are moved with the sheeting speed by the sheeting when the welding heads are stationary. Sheet-lining 3 is moving in the opposite direction. Before welding the bell of the housing with a flange 12, the rollers 16 are retracted to the sides and when the drums 34 are braked, while simultaneously lifting the rollers 18 and the fork 22, the two shoulders I4 from the inner cavity of the housing The rollers 18 and the carriage 19 are retracted to the upper position and the fork 22 is lifted with the casing to the vertical position. Since the unbalanced part of the casing is facing downward when lifting, the casing rotates relative to the plug 22 and interacts with the sensors 59, which fix it in position, as described above, to weld the sidewalls with the sheet. In such a position, the cover is lowered for docking with the flange 12. In this case, the edges of the cover socket are pressed to the inner sides of the flange; 12 with the help of levers 42.

Placement of welding heads is welded with horizontal longitudinal and external transverse 1H1 seams. A 2HI cross seam can be welded in two ways. In the first method, kozhuz; with the electric brakes on, they are raised to a vertical position and welded by welding head or semi-automatic machine lifted to point K. In the second method, the casing, after welding the longitudinal and transverse 1H1 seams, is pressed by the cylinder 28 to the drum 13 and rotates it with the marching speed (as in the positioner) when the centers of the disarmed crosses are in position O (Fig. 9). At the same time, the rectangular section of the casing, being in its upper position being unbalanced, when tapping the plug 22 and interacting with an electric brake 33, is set to the O position (fig 5), where the 2H1 seam is welded up and the point L of the welding hollow is attached

plate 30, electromagnets 35 which hold the wall 8). After the wall is laid on the faceplate, the switch 62 turns on the drive 49 for moving the roller 48 to its initial position. When welding the casing with one-sided entry, the plate 30 can be rotated by the nozzle 38 mounted on the rollers 37 of the drum 13 — only for orienting the wall 8, since there is no welding of a circumferential weld on it. The installation of the wall 8 on the plate 30 is made from only one accumulator.

Specified orientation (alignment of the contours of the walls in position for welding with the sheet-covering) is performed in cases of violation of such an agreement, for example, when walls are turned on the cross or plate when they are installed and fed from the accumulators, where they can also be insufficiently oriented position, as well as after the same time, they are lowered, brake the drums 34, turn off the clamp 31 (or de-energize the electromagnet 35 of the plate 30), separate the faceplates with cylinders 28 and lower the levers 25 forks 22 horizontally e position for the next welding cycle. The interlocked operations are performed automatically and using the software of the operator's console (not shown). In the loading mechanism of the side walls 7 and 8 and the flanges 9, the head 42 rotates in the direction that fcOTOpoe corresponds to the direction of movement of the sheetfinding during rolling, since the drum 13 is interlocked with this mechanism during rolling. To avoid re-capturing the walls and flanges during the second revolution of the head 42 and with the flange already installed, the switch 62, which the wall 7 and 8 gripped by the electromagnetic clamp 43 presses, activates the drive 49 for moving the roller 48 interacting with the cam 47, therefore the head 42 when stopping above the accumulator flanges 9 does not lower to grip it and continues turning to the position of laying the wall on the faceplate 27. The switch 63, which interacts with the stop 65 when the head 42 is above the faceplate 27, switches off the electromagnetic the grip 43 and the wall are laid on the spider 29 (or 9 flanges 9 of different diameters when the walls 7 rotate at different welding speeds. Precise orientation is performed before welding the walls with sheet-plating by separate rotation of the rollers 37 drum 13 with raised rollers 18. The rectangular protrusion of each wall during rotation interacts with the sensor switch 59, which turns off the rotation of the rollers 37 when the walls are in a consistent position. Corrected orientation of the walls is also performed when they are horizontal after inserting the plates on the crosses with the mechanisms 44 off. In this case, the rotation of the shaft 45 is transmitted to the shaft 53 and, through the pin gear 55, to the disarmed crosses (plate) (Fig. 1) . In the same position, in cases of technological necessity, the flanges 9 are welded to the side walls 7 with internal circumferential seams, welding heads installed above them. On the proposed device, it is possible to weld other products other than the covers, the cross section of which has, for example, a outlet-concave contour or cam filter, etc. (tanks, fuel tanks, chemical engineering products, etc.). 3 А X - l-fH; i M84 For retooling the device for welding casings of various versions, the plug 22 is completed with removable cross-pieces 29 and plates 30 in the required combination. For example, to weld the casing with one-sided entry of the right rotation of the impeller, the crosspiece and the plate are reinstalled. To change the device to other sizes of cases, the drum 13, double-arm lever 14 with rollers 18 and 20, trolley gauge 19, fork 22 and roller table 2 are adjustable in width, as well as are equipped with interchangeable crosses, plates and nozzles. Equipping the device for assembly and welding. casing of centrifugal fans with a mechanism for loading faceplates with flanges and side walls, drum execution in the form of coaxial rollers installed with the possibility of independent and synchronous rotation, tilting faceplates and sequential connection with the drive drum allows to automate orientation, loading, assembly and welding when using one drive, and the implementation of the faceplates is replaceable and the equipment of the drive drum rollers with replaceable nozzles ensures the welding of covers with two Oron and a one-way air inlet. 7 4 f

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Claims (1)

. An automatic machine for assembling and welding casings of centrifugal fans, comprising a roller table mounted on the base for supplying the cladding sheet, a correct feeding mechanism for the cladding sheet, equipped with a drive drum and welding heads for welding internal seams, welding heads for welding external seams and a manipulator made in the form of a pivotally mounted on the base of the fork with faceplates fixed to the ends of its teeth with clamps for the side walls and flanges of the casing, mounted with the possibility of longitudinal movement, about characterized in that, in order to expand technological capabilities and increase productivity by providing automatic orientation of the tank walls of the housings and loading the side walls and flanges when assembling and welding the housings with two-sided and one-way air inlet and outlet flange, the machine is equipped with symmetrical mounted relative to the longitudinal axis rolling table with many positional shops for side walls and flanges with a mechanism for loading faceplates ^: manipulators and roller tables mounted along the axis and a lifting table with clamps for the output flange. the drive drum of the correct feeding mechanism is made in the form of two coaxial rollers equipped with interchangeable nozzles and installed with the possibility of independent and synchronous rotation and serial connection with the loading mechanism and the faceplate of the manipulator corresponding to each of them, while the faceplates are interchangeable and equipped with electric brakes and mounted on the ends of the forks with the possibility of tilting, installing them coaxially with one another and connecting with the tori of the rollers of the drive drum.