Shear butt welder

Abstract

The invention relates to a shear butt welder, which is characterized in that the shear butt welder comprises flat rolls, a pinch centering device, a stroke stopper, a base, a shear device, a welding device, fixing bolts and a waste collecting frame, the flat rolls are mounted on a front beam and a back beam of the base, a front sliding seat and a back sliding seat are mounted behind the flat rolls on the front beam and the back beam of the base, the pinch centering device, the shear device and the welding device are sequentially mounted in the front sliding seat and the back sliding seat and slide along the sliding seats respectively, the pinch centering device and the flat rolls are fixed to ends of the front beam and the back beam of the base through the fixing bolts and are arranged behind the welding device, and the stroke stopper is mounted on the lateral face of the base and behind the sliding pinch centering device. The shear butt welder is reasonable in design and compact in structure, shearing and welding quality of strip steel can be ensured, production efficiency is remarkably improved, and the shear butt welder not only has the function of feeding among working procedures, but also can recycle sheared waste heads in a centralized manner, and further has the advantages of small occupied space, reduction of labor intensity and cost, operational safety, convenience in use and the like.

Description

technical field [0001] The invention belongs to the production line equipment of straight seam welded pipe, in particular, it is a kind of shear butt welding which integrates the centering, shearing, welding process of the head and tail of the front and rear rolls of the medium and wide band, and the transportation between each process. machine. Background technique [0002] At present, the straight seam welded pipe production equipment used to roll medium and wide steel strips for straight seam welded steel pipes, the head and tail shearing of the front and rear coils in the strip steel preparation section are completed by shears, and the head The welding of the tail and tail is completed by the welding machine, that is to say, the centering clamping process, shearing process, and welding process of the head and tail of the steel strip before and after the coil are all completed independently; it has the following disadvantages and Disadvantages: [0003] 1. The productio...

AI Technical Summary

Problems solved by technology

[0009] The object of the present invention is achieved by adopting the following technical scheme: the shear butt welding machine is characterized in that its structure mainly consists of flat rollers, pinch centering devices, stroke stops, bases, shearing devices, welding device, fixing bolts and waste collection frame, the base is composed of front and rear beams, on one end of the front and rear beams of the base, a flat roller driven by a strip pinch machine is installed to pinch the strip steel, and the top surface of the base following the flat roller The front and rear sliding seats are installed symmetrically on the front and rear beams, and the pinch centering device, shearing device, and welding device sliding along the sliding seats are installed in the front and rear sliding seats in sequence, followed by the sliding welding device. On the front and rear beam ends of the base, the pinch centering device and the flat roller on the base are fixed by fixing bolts; a stroke stopper is installed on the side of the base behind the sliding pinch centering device, The foundation between the centering device and the sliding shearing device is provided with a waste collection frame; each of the pinch centering devices is composed of a centering hydraulic cylinder, a frame, a screw motor reducer, a lead screw, a lead screw seat, screw nut, centering roller seat assembly, guide block and guide block driving device, the machine base driven by the centering hydraulic cylinder is respectively installed in the front and rear sliding seats, and the front and rear machine The two outer ends in the center of the top surface of the seat are symmetrically installed with two screw seats, and the screw with left and right thread segments driven by the screw motor reducer is installed in the two screw seats. The threaded section is screwed to connect two wire nuts that move synchronously, and two pairs of centering roller seat assemblies that move synchronously are symmetrically installed on the outside of each thread nut; the two machine bases that are in contact with the two pairs of centering roller seat assemblies There are two guide blocks symmetrically arranged in the plane, and a guide block driving device is installed on the bottom surface of the sliding seat, and the two guide blocks are driven to slide in the guide groove through the guide block driving device, so as to realize the forward and backward movement of the two centering roller seat assemblies; The shearing device respectively drives two shearing mechanisms through two shearing moving cylinders symmetrically installed on both sides of the base. , adjustment clearance screw and nut, clamping beam, clamping hydraulic cylinder, support roller, support hydraulic cylinder, shearing base, fixed shearing blade and dynamic shearing blade, the fixed shearing blade is connected to the shearing base, and the dynamic shearing The blade is installed on the dynamic shear base, and the dynamic shear base is connected to the shearing beam through the sliding chute and the screw. The adjustment clearance screw and nut can push the dynamic shear base to move along the direction of the sliding chute to realize the adjustment of the dynamic shear. The gap between the cutting edge and the fixed cutting edge; the two shearing hydraulic cylinders symmetrically mounted on the moving shear seat synchronously push the moving shear seat to move down to cut the strip steel; it improves the cantilever shear driven by the single cylinder in the prior art. Disadvantages of uneven force on the blade; two clamping hydraulic cylinders are installed symmetrically on the bottom surfaces of both sides of the center line of the shearing base, and the clamping beam is driven up and down synchronously by the two clamping hydraulic cylinders; A. Two support hydraulic cylinders are symmetrically installed at both ends of the bottom surface of the shearing base outside the clamping hydraulic cylinder, and the support rollers are driven to move up and down by the two support hydraulic cylinders, so as to avoid the wear of the fixed shear blade when the strip steel after shearing is moved. The described welding device is to install two welding components symmetrically in the base, each of which is driven by a welding hydraulic cylinder, and each of the described welding components is driven by a head and tail clamping beam, a welding torch and an adjustment device , B clamping hydraulic cylinder, swing seat, swing cylinder, welding beam and welder base, the material head and tail clamping beam and B clamping hydraulic cylinder are fixed on the swing seat, and the material on the swing seat is driven by the swing cylinder The head material tail clamping beam and the B clamping hydraulic cylinder swing together, and after the head and tail welding of the strip steel is completed, the swing seat is dropped to prevent the strip steel from wearing and tearing the welding platform; the A clamping hydraulic cylinder and the B clamping hydraulic cylinder The material head clamping beam and the material tail clamping beam can be respectively driven to clamp the material head and tail of the strip steel; the welding torch driving and adjusting device can move along the direction of the welding beam for welding

Images