CS264068B1 - Mobile positioner especially for arc welding of vessel's casing and faces - Google Patents

Abstract

a mobile positioner, especially for arc welding of casing and vessel ends it is stored by taxiway wheels (3) on the rails (4) and is equipped oro positioning on rails (4). It consists of a frame (1) and a swing part (2). On frame (1) They are rotatably mounted at least four lower support rollers (7) and least * two top support rollers (8), with frame (1) four forks are pivoted (11) provided with a leading surface (12), swinging the part (2) is firmly connected to the two segments (6) which are placed on the bottom pulleys (7) and top supporting pulleys (8) on each segment (6) are two locking projections (13) are fastened, the swinging part (2) is connected to at least two single-acting force cylinders (9) suspended swinging on the frame (s) on which they are at least two spring units (16). The spring units (16) are on the frame (1) is swinging and consists of a bar, plates, jackets and springs, with the yoke stick fitted with an outer collar at the end and a the comb is provided with an inner collar.

Description

The object of the invention is a mobile positioner, in particular for the arc welding of the jacket and the ends of the container with an automatic working process.

For welding large steel vessels made of thin stainless steel (up to a sheet thickness of 3 mm), welding clamps consisting of a supporting frame on which o

clamps are fastened for clamping the individual parts of the container.

Containers are generally rectangular in plan view and consist of two pentagonal container faces with bent edges and a container shell. The container shell is formed by two sidewalls and a prismatic bottom, the parts being welded together before the container shell is welded to both container faces. When clamping a portion of the container, the weld edges of the container must be matched at the same time, since the thin stainless steel sheet flexes when pressing the container part and, after being removed from the press tool, the container parts do not have exactly the desired shape. Due to the small sheet thickness, the individual parts of the container must be precisely assembled before welding in order to obtain quality welds. The weld seams are formed from the outside of the vessel and the weld roots are shaped by solid copper washers, which also prevent the weld pool from flowing. The copper washers are bolted to the welding frame support frame. The container is placed upside down during welding on known devices. The most commonly used technology is manual welding with a non-melting electrode, an additional wire and argon fusion bath protection. When using a container in the food industry, any cracks in the welds on the inside of the container are unacceptable as they could cause bacterial contamination of the container contents. Therefore, the roots of the welds are ground, which is a time-consuming operation that substantially worsens the labor productivity. T® is also aggravated by the lengthy clamping process of the container, which often fails to achieve the optimum weld gap width and, as a result, the demands on the weld root to be ground further increase.

These drawbacks are largely eliminated by the mobile positioner, in particular for the arc welding of the casing and the ends of the container, according to the invention, supported by rails on rails, equipped with a rail positioning device consisting of a frame and a pivoting part. that at least four lower support rollers and at least two upper support rollers are rotatably mounted on the frame, with four forks provided with a leading surface pivotally connected, the rocker part being fixedly connected to two segments which are supported on the lower support rollers. The roller part is connected to at least two single-acting power cylinders suspended by the swinging frame, while at least two spring units are mounted on the frame.

O

It is a further object of the invention that each spring unit is supported on the frame by a pendulum and consists of a rod, a plate, a shell and a spring, the rod being provided with an outer collar at its end and the housing provided with an inner collar.

An essential advantage of the mobile positioner, especially for arc welding of the shell and container faces, is the simple, robust and functionally precise design of the rocker part swinging mechanism, which is capable of reliably transmitting considerable forces>

acting on the swinging part of the positioner while clamping the weld edges of the container. , •

A further significant advantage is the small number of power leads, which facilitates the construction of the movable power carrier, which may preferably be placed beneath the floor, and the power leads from the movable power carrier may be guided to the underside of the positioner frame through a narrow slot in the floor. positioners. The power supply can consist of one compressed air hose and a single-stranded cable with 3 264 058 as all pneumatic distributors can be placed on the positioner frame. Optionally, the third lead may be a single-core cable that secures the connection of the welding positioner to one pole of the power sources.

Another advantage is the possibility of remote manual or automatic control from the control unit.

A bobbin, especially for arc welding of the quiver and the face of a container according to the invention, is schematically shown in the accompanying drawings, in which Fig. 1 is a side view in a direction perpendicular to the rocking direction when the rocker portion of the positioner is in position of FIG. <'js view in direction "S ^M which is indicated in FIG. 1", = Fig. 3 J® section along line a-Λ · obr® indicated at 1 and FIG.' vV ívětSeném scale axial section of the spring unit.

The mobile semiconductor, in particular for the arc welding of the gastropod 8 according to the invention, is essentially a flow,

Sc wound 1 are rotatably supported by at least four lower abutment rollers 7 * <tvjs upper supporting kl »HKY R" RE-rm χ JR ^n, j pivotally connected to the four forks 11 provided with camming surfaces 12, each fork 11 is actuated by the power cylinder 10 The rocker part 2 is rigidly connected to two segments 6 which are supported on the lower support plates 2 β of the upper support rollers 8 and two locking lugs 13 are fastened to each segment 8 and the rocker part g is connected to at least two single-acting force rollers g. suspended pivotally on the frame R '· X X frame are disposed at least two spring unit 16. the spring unit 1e finished bars weighing 2 2Σ, ^Ti «s2y 1? / housing 18 and spring 20. the rod 17 is provided to ^ j dnon outer end The collar 27, and at the other end typically have an eye for engaging the swing part 2. The rod 17 extends through the aperture. within the housing 18 and the opening in the plate 19. The housing 16 is pivotally mounted on the RI: P .žu 2 ° ^{F: 30 '^} C-EPU 24 · ® formed thereon inside nákn.čok 29 c a as the rest Ruzsa plate V '. When the rocker part 6 is in the middle position, all of the spring elements 16 of the inner ring 23 and the outer ring 7.7 are in contact. » _R * * & · W ttí> Λ € ·· <-it t« »'»' -f t 1 V i® </ í '>A.' W

In «w .ý t,« A 'y νΛ

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264 C6Q

This arrangement ensures that even with a small deflection of the rocker part 2 from the central position, the additional compressed spring 20 exerts sufficient force to overcome the passive resistances and return the rocker part 1 to the initial position. The frame 1 has four traveling wheels, driven mostly by an electric motor (not shown), consisting of two rails. As a rule, the rails 4 are supported on the floor 5. The container shell 24 is partially welded to the container faces 25 before being placed on the pivot part. Therefore, the rocker part 6 is generally provided with two fixed end stops 14 and one. a sliding front stop 15, which stops allow axial vessels on the positioner. The pivot part 6 is generally provided with four copper strips 26, which are located under the welds of the vessel ends 5 with the vessel shell 24 and provide the formation of the weld root.

As a rule, four inclined runners 22 are mounted on the frame 4 and four vertical rollers (not shown) on the floor 5 are shown on the floor 5, thereby ensuring a precise lateral positioning of the positioner on the rails 4 in the working position of the extensor.

As a rule, a locating carriage stop 23 is placed on the frame 7 and, when locked, engages with a locating carriage device (not shown) on the rails _c .

Wednesday functional surfaces £ segments are preferably located at the intersection, two of ^the plane tangent to the above copper strips 26th

β

M _of labile positioner, in particular for arc welding sheath and container ends according to the invention operates so that, after imposition Semiwelded container swinging part £ here, which is in its middle position, there is axial been appointed container pendulums £ sliding the front width is 15 The opposite container face 25 is supported on fixed end stops 14. The positioner then moves along the rails 6 into the working space of a welding device (not shown), whereby the positioner is precisely locked using, for example, a travel stop 23 and four guide rails 22. the two forks 11, located relative to the oscillation axis, on the same side of the positioner, are lifted by extending the piston rods of the respective ball cylinders 10 while simultaneously injecting compressed air under the piston.

264 068 opposite the positioner than the raised fork 11. The positioner begins to tilt. The locking lugs 13 first slide on the running surfaces 12 of the forks 11 and push the forks 11 somewhat downwards. Potoia get over cutout fork 11, the fork 11 is again lifted and sliding slots forks 11, no aretečni projections _T 13 occurs zaaretovéni swinging part 2 in an inclined position, where the two copper strips 26 in a horizontal position, so that the weld edges of the shell 24 The container and the two container faces 25 above the horizontal copper strips 26 may be welded. However, before welding, the weld edges press against the copper strips 26 (not shown) to press the weld edges, which must ensure the alignment of the weld edges, remove them. Thus, the apparatus (not shown) for pressing the weld edges has a considerable force which is transmitted to the streamline. The two horizontal welds can be welded simultaneously with two automatic arc welding machines (not shown). Upon completion of these welds, after lifting the weld edge pressing device (not shown), the two raised forks 21 were first lowered to the lower position. 6, which had a rod 17 extended and a compressed spring 20.

This is followed by tilting the positioner to the opposite side, pressing the weld edges, welding and returning the rocker part to its central position in a similar manner. Then, the positioner lock on the rails 4 is released and the positioner with the welded vessel can be moved out of the working space of the welding machine (not shown) along the tubes 4. Then the welded tank is removed from the swinging part 2 subsequent to the release of the sliding of the front stop 21 ^»m for Ti Company positioners cycle is finished and can be stored there '2j + new shell container platoon * 25 vessels, cheating function polohovadla.podle invention is typically incorporated and it is automatic.

Claims (2)

Mobile positioner, in particular for the arc welding of the shell and the ends of a container, operable by means of rail rollers, equipped with a position locking device on rails consisting of a frame and a swinging part, characterized in that at least four lower support rollers (7) with at least two upper support rollers (8), with the frame (1) being pivotally connected four forks (11) supported by the running surface (12), the pivoting part (2) is firmly connected to two segments (6) which are mounted on the lower thrust rollers (7) and the upper thrust rollers (8), on each segment (6) are fixed two locking projections (13), the rocker part (2) is connected to at least two single-acting force rollers (9) hinged on the frame (1), while at least two spring units (16) are mounted on the frame (1). 2. A positioning device according to claim 1, characterized in that each spring unit (16) is pivotally mounted on the frame (1) and consists of a rod (17), a plate (19Λ), a housing (18) and a spring (20), the rod (17) is provided with an outer collar (27) at the end and the housing (18) is provided with an inner collar (28);